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Surge ArrestersCatalog DataCA235029EN
Effective February 2016Supersedes I235-35 August 2014
COOPER POWERSERIES
GeneralEaton recognizes the advantages of polymer-housed arresters with reduced size and weight and enhanced safety in this generation of Cooper Power™ series UltraSIL® polymer-housed VariSTAR® surge arresters.
The UltraSIL polymer-housed VariSTAR surge arrester incorporates the industry recognized superior polymeric material – silicone rubber.
Using Metal Oxide Varistors (MOVs) having excellent electrical properties, these arresters provide superior overvoltage protection for MV distribution systems. Manufacturing our own MOV disks allows strict quality control over the manufacturing process from start to finish.
After production, every MOV disk must pass a series of electrical tests designed to ensure the highest individual disk quality. These MOV disks have proven their reliability and protective abilities through years of in-service use.
UltraSIL polymer-housed VariSTAR surge arresters are available in 5 kA and 10 kA Class 1 IEC 60099-4 designs.
ConstructionThe MOV disks are combined with aluminum end electrodes and are encapsulated in a high-strength composite wrap insulating material on our fully automated assembly line using strict quality control processes that eliminate manufacturing variances. The composite collar is cured to the MOV disk stack to form a solid insulation MOV disk module system that is inserted and bonded to the industry leading track resistant UltraSIL silicone rubber housing. This exclusive patented manufacturing process forms a secondary moisture seal under the primary silicone rubber housing seal, which makes the arrester impervious to moisture and capable of withstanding extreme electrical, environmental and cantilever load conditions. The composite wrapped UltraSIL polymer-housed VariSTAR surge arrester design represents a quantum leap in polymer arrester technology.
UltraSIL polymer-housed VariSTAR surge arresters 5 kA and 10 kA Class 1 IEC 60099-4 for MV systems to 36 kV
Features and detailed description
Figure 1. Cutaway illustration of an UltraSIL polymer-housed VariSTAR surge arrester.
STAINLESS STEEL12 mm LINE TERMINAL3/8" (Optional)
ALUMINUM GROUND ELECTRODE
OPTIONAL GROUND LEAD DISCONNECTOR
NAMEPLATE INFORMATION
STAINLESS STEEL TOP CAP
ALUMINUM LINE ELECTRODE
UltraSIL SILICONE RUBBER HOUSING
METAL OXIDE VARISTAR (MOV) DISKS
BONDED SOLID INTERFACE
FIBERGLASS REINFORCED EPOXY COMPOSITE
OPTIONAL INSULATING
GLASS-FILLED THERMOSET
POLYESTER HANGER
STAINLESS STEEL 12 mm GROUND TERMINAL3/8" (Optional)
kV RATING LABEL (VISIBLE FROM GROUND)
Arrester Type UNS UHS
System Application Voltages 3-36 kV 3-36 kV
Rated Arrester Voltages, Ur 3-36 kV 3-36 kV
Power System Frequency 50-60 Hz 50-60 Hz
Applicable Design and Test Standard IEC 60099-4 IEC 60099-4
Nominal Discharge Current 5 kA 10 kA
Line Discharge Class – 1
High Current Withstand 65 kA 100 kA
Pressure Relief Class 20 kA (rms Sym.)(B)
20 kA (rms Sym.)(B)
Maximum Energy, 2000 μs Square Wave (Repeatable 1 min)
1.83 kJ/kV Uc 2.85 kJ/kV Uc
High Current, Short Duration Energy Handling (65 kA) 3.17 kJ/kV Uc (100 kA) 3.9 kJ/kV Uc
2
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
FeaturesThe UltraSIL silicone rubber housing has undergone a wide range of design tests to determine the optimum shed configuration. In addition, long term environmental testing has verified the lifetime superiority of UltraSIL silicone rubber when compared to other polymeric insulating materials.
Independent laboratory tests have verified the superiority of silicone rubber in terms of hydrophobicity, resistance to UV and surface tracking performance in contaminated environments, chemical inertness, temperature stability and other key insulating properties.
UltraSIL silicone rubber will not support biological growth (algae and mildew) and is non-flammable.
A ground lead disconnector is optionally available for use on systems having 20 A or more of available fault current. The disconnector will sense and disconnect the ground terminal in the unlikely event of arrester failure, preventing a permanent system short circuit. A disconnector that has operated gives a visual indication of internal arrester damage and the need for arrester replacement. See Figure 2 for the disconnector operating characteristics.
Customers looking to improve system reliability by minimizing wildlife related outages now have multiple options. In addition to the standard wildlife protector, featuring two self-adjusting "valve" style openings (see Figure 11 for a dimensional diagram) Eaton also offers the more robust line terminal wildlife guard. The line terminal wildlife guard is easily retrofitted to existing arrester installations and provides increased electrical insulation for the high voltage terminal of the arrester. The flexible design of the line terminal wildlife guard allows insertion of the lead wire through the bottom of the integral molded flanges. The access holes molded above the flanges will allow conductor sizes ranging from 0 to 0.50" in diameter (OD). The line terminal wildlife guard geometry allows water to shed away from the surface area of the wildlife guard while minimizing ice buildup and maintaining flexibility through extreme operating temperatures. Refer to Figure 12 for a dimensional diagram.
For complete wildlife resistance, the ground terminal wildlife guard can easily be installed alongside the line terminal wildlife guard or standard wildlife protector. The ground terminal wildlife guard is a compact and economical guard that ensures wildlife is unable to come in contact with energized objects while on a grounded surface. See Figure 13 for a dimensional diagram.
OperationThe operation of the UltraSIL polymer-housed VariSTAR surge arrester is typical of gapless metal oxide arresters. During steady state conditions, line-to-ground voltage is continuously across the arrester terminals. When overvoltages occur, the surge arrester immediately limits the overvoltage to the required protective level by conducting only the necessary level of surge current to earth. Upon passage of the overvoltage condition, the surge arrester returns to its initial condition once again, conducting only minimal leakage current.
Design testingThe housing material, internal components and hardware work as a system and stand up to years of exposure to environmental extremes. To assure a superior level of performance, the components and the assembled arrester units have been subjected to a testing program that accurately simulates years of exposure to field conditions. Tests include:• IEC 60099-4 Testing – Full certification to performance
requirements by an independent laboratory has been completed. See CP0606, IEC UHS 10 kA Arrester Certified Test Report, and CP0504 IEC UNS 5 kA Arrester Certified Test Reports for details. Additional reference documents are listed on page 17.
Routine testsA complete automated production test program ensures a quality product. Each metal oxide varistor receives a series of electrical tests. Quality is further demonstrated by tests performed to destruction on samples from every lot of varistors.
Listed are the varistor tests performed in accordance with IEC 60099-4:• Physical Inspection• Discharge Voltage • V1mA/cm2
• Leakage Current at 80% of V1mA/cm2 Voltage• High Current, Short Duration Withstand • Thermal Stability • Aging
Each fully assembled UltraSIL polymer-housed VariSTAR surge arrester must pass the following routine tests:• Physical Inspection• Reference Voltage Test
UNS Iref = 3 mA UHS Iref = 4 mA
• Partial Discharge Test @ 1.05 x Uc ≤ 10 pc
General application recommendationsThe rating of an arrester is the maximum power frequency line-to-ground voltage at which the arrester is designed to pass the IEC operating duty test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration.
Gapless surge arresters must be selected with sufficient steady-state self impedance to withstand the application of line-to-earth power frequency voltages under all system conditions of operation.
3
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Continuous voltageA preliminary selection that is based on selecting an arrester having a “Continuous Operating Voltage”, or Uc, that equals or exceeds the normal system maximum line-to-earth operating voltage is made. Reference IEC 60099-5.
Power-frequency overvoltages
The second application criterion to be met is a condition established by the effectiveness of system grounding. During a single line-to-earth fault, under maximum system voltage conditions, the arrester selected should have a “Rating” (Ur) that will not be exceeded by the voltages on the unfaulted phases at the point of arrester application. One must pay particular attention to systems having low coefficients of grounding, ungrounded systems and systems that are resonant grounded or that may become ungrounded under abnormal conditions of operation. This second voltage consideration may be modified for various system conditions as long as the application does not violate the selected arrester’s “Temporary Overvoltage Capability (TOV)” (see Figure 3).
Temporary system conditions resulting in sinusoidal power-frequency voltages that exceed arrester “Continuous Operating Voltage, (Uc)” or even “Arrester Rating, (Ur)” can be allowed. Consider the permissible magnitude and duration of these overvoltages (including the full time of system back-up protection), with appropriate allowances for any recent arrester discharge energies.
The voltage withstand capability application on ungrounded systems is 1.035 per unit of COV (Uc) for 24 hours. Systems which permit earth faults to remain undetected or operate with one phase earthed for periods in excess of 24 hours will require the use of an arrester having a Uc (continuous capability) equal to the system maximum phase-to-phase voltage.
Under some special system conditions, such as transformer energization using certain types of connections and ferroresonance, higher voltages can be experienced by the arrester.
Consult with your Eaton representative to have your individual system application needs reviewed.
Performance test characteristicsUltraSIL polymer-housed VariSTAR surge arresters meet the following design tests as described by IEC 60099-4:• Operating Duty Test:
UNS–twenty (20) current surges of 5 kA, 8/20 µs waveshape followed by two (2) high current surges of 65 kA crest (4/10 µs).
UHS–twenty (20) current surges of 10 kA, 8/20 µs waveshape fol-lowed by two (2) high current surges of 100 kA crest (4/10 µs).
• Long Duration Current Impulse Withstand Test:
UNS–eighteen (18) current surges of 75 A, 1000 µs duration.
UHS–eighteen (18) current surges of the energy associated with the line parameters for IEC Class 1 performance (approximately 250 A, 2000 µs).
Following each of these tests, the arresters remain thermally stable as verified by:• Continually decreasing leakage current values during a thirty
minute power monitoring period when energized at Uc.• No evidence of physical or electrical deterioration.• The In (5 kA or 10 kA) discharge voltage measured after each
test changed less than 5% from the initial values.
Full IEC 60099-4 certification has been completed and independently verified.
Pressure relief (fault current withstand tests)These tests demonstrate the ability to withstand fault currents for specific durations.
All UltraSIL polymer-housed VariSTAR surge arresters have been tested in accordance with the requirements listed in IEC 60099-4 and are non-fragmenting to the levels shown in Table 2.
Table 1. Commonly Applied Voltage Ratings (Ur)
System Voltage(kV rms)
Arrester Rating — Ur(kV rms)
Nominal Maximum
Four-Wire StarMulti-GroundedNeutral
Three-Wire StarSolidly GroundedNeutral at Source
Delta, Ungrounded,& Resonant Impedance Grounded Star
3.3 3.7 3 6 6
6.6 7.3 6 9 9
10.0 11.5 9 12 12-15
11.0 12.0 9-10 12 12-15
16.4 18.0 15 – 18-21
22.0 24.0 18-21 24 24-27
33.0 36.3 27-30 36 36-36
Table 2. Pressure Relief Tests
Arrester Type
IEC Pressure ReliefClass
Fault CurrentAmplitude(kA rms) Sym.
Minimum Fault Current Duration(Seconds)
UNS/UHS B 0.820
0.50.2
Figure 2. UNS and UHS disconnector operating characteristic.
10.0
1.0
0.1
0.0110 100 1000 10000
ARRESTER FAULT CURRENT (A rms)
IGN
ITIO
N T
IME
(S
EC
ON
DS
)
4
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Temporary overvoltage (TOV) capability (power frequency withstand voltage versus time characteristic)The ability to withstand system power frequency overvoltage conditions is shown in Figure 3. The graph shows for a given voltage magnitude (on a per unit of Uc basis), the time an arrester can survive a temporary power frequency overvoltage condition and recover without thermal runaway.
Protective characteristicsUltraSIL polymer-housed VariSTAR surge arresters provide excellent overvoltage protection for electrical equipment throughout the MV distribution system.
The protective characteristics of the surge arrester family are shown in Tables 3 and 4.
Figure 3. Temporary Overvoltage Capability (followed by Uc), 60° C ambient, UNS and UHS. The 24 hour TOV without prior duty is 1.173 per unit of Uc. The 24 hour TOV with prior duty is 1.035 per unit of Uc.
Table 3. Protective Characteristics – UNS, In = 5 kA IEC 60099-4
UrArresterRating(kV rms)
UcCOV(kV rms)
Steep CurrentResidualVoltage(kV Crest)
Lightning Impulse Residual Voltage(kV Crest)8/20 µs Current Wave
1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA
3 2.55 10.9 9.0 9.7 10.4 11.4 13.0 15.1
6 5.1 21.8 17.9 19.4 20.8 22.7 26.0 30.2
9 7.65 31.4 25.8 28.0 30.0 32.8 37.4 43.5
10 8.4 32.7 26.9 29.1 31.2 34.1 38.9 45.3
12 10.2 41.1 33.8 36.5 39.2 42.9 48.9 56.9
15 12.7 51.3 42.2 45.7 49.0 53.6 61.1 71.1
18 15.3 61.6 50.6 54.8 58.8 64.3 73.4 85.3
21 17.0 65.4 53.7 58.2 62.4 68.2 77.9 90.6
24 19.5 76.3 62.7 67.8 72.8 79.6 90.8 106.0
27 22.0 86.3 71.0 76.8 82.4 90.1 103.0 120.0
30 24.4 96.2 79.1 85.6 91.8 100.0 115.0 133.0
33 27.0 107.0 87.8 95.6 102.0 112.0 127.0 148.0
36 29.0 115.0 94.7 103.0 110.0 120.0 137.0 160.0
Vo
ltag
e (p
er u
nit
CO
V)
UltraSIL Class 1 - 10kAVariSTAR Arrester
1.518
1.436
1.359
1.286
1.217
1.151
1.089
1.748
1.650
1.558
1.471
1.389
1.311
1.238
1.000
1.100
1.200
1.300
1.400
1.500
1.600
1.700
1.800
0.01 0.1 1 10 100 1000 10000
Time (sec)
Volta
ge (p
er u
nit C
OV)
Prior DutyNo Prior Duty
Time (sec)
5
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Table 5. Housing Insulation Withstand Voltages, Ur 3-36 kV, UNS and UHS, In = 5 & 10 kA Class 1
ArresterMounting
Configuration
ArresterHousingDesignation (Digits 6 & 7)
Leakage Distance
(mm)Strike(mm)
1.2/50µsImpulse
(kV Crest)
1 min. Dry(kV rms)
1 min.Wet(kV rms)
1.2/50µsImpulse
(kV Crest)
1 min. Dry(kV rms)
1 min.Wet(kV rms)
1.2/50µsImpulse
(kV Crest)
1 min. Dry
(kV rms)
1 min.Wet(kV rms)
1.2/50µsImpulse
(kV Crest )
1 min. Dry(kV rms)
1 min.Wet(kV rms)
1.2/50µsImpulse
(kV Crest)
1 min. Dry(kV rms)
1 min.Wet
(kV rms)
03 183 79 Dry 47 23 92 50 36 70 44 22 85 53 29 70 42 23
04 256 106 (kV rms)
56 34 105 55 38 79 52 33 99 56 37 82 51 33
05 330 133 104 64 43 117 63 51 89 55 42 109 60 49 90 62 45
06 404 159 117 78 55 126 86 57 93 61 48 119 80 58 97 72 55
07 477 186 129 87 66 137 96 68 98 62 51 122 81 60 107 81 66
08 551 213 140 96 77 148 106 79 104 65 55 126 82 65 118 89 78
09 625 239 – – – 159 116 90 – – – 130 83 70 129 98 89
10 698 266 – – – 171 126 100 – – – 136 86 75 140 106 99
11 772 293 – – – 183 135 111 – – – 142 90 80 152 114 109
12 846 320 – – – 195 144 121 – – – 149 94 86 164 122 119
13 919 346 – – – 207 153 131 – – – 158 99 92 177 130 128
14 993 373 – – – 220 161 140 – – – 167 105 98 190 138 137
15 1067 400 – – – 233 170 150 – – – 177 112 105 204 146 146
16 1140 426 – – – 246 178 159 – – – 187 120 112 218 154 154
17 1214 453 – – – 259 185 168 – – – 199 128 120 233 161 162
18 1288 480 – – – – – – – – – – – – 248 169 169
19 1361 506 – – – – – – – – – – – – 264 178 176
20 1435 533 – – – – – – – – – – – – 280 184 183
21 1509 560 – – – – – – – – – – – – 296 191 189
Insulation withstand characteristics
105 mm 127 mm105 mm 127 mm
Table 4. Protective Characteristics – UHS, In = 10 kA, Class 1 IEC 60099-4
Ur Arrester Rating(kV rms)
UcMCOV(kV rms)
Steep Current Residual Voltage (kV, peak)
Lightning Impulse Residual Voltage (kV crest) 8/20 μs Current Wave 30/60 Switching Surge
1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA 125 A 500 A
3 2.55 10.8 8.2 8.7 9.1 9.9 10.9 12.3 7.1 7.6
6 5.1 21.5 16.3 17.4 18.2 19.8 21.9 24.7 14.1 15.1
9 7.65 32.4 24.6 26.1 27.3 29.8 33.0 37.1 21.3 22.7
10 8.4 34.4 26.0 27.7 29.0 31.6 34.9 39.4 22.6 24.1
12 10.2 43.2 32.7 34.8 36.4 39.7 43.9 49.5 28.3 30.3
15 12.7 52.2 39.6 42.1 44.0 48.0 53.1 59.8 34.3 36.6
18 15.3 64.8 49.1 52.3 54.7 59.6 65.9 74.2 42.6 45.5
21 17 68.8 52.1 55.4 58.0 63.2 69.9 78.7 45.1 48.2
24 19.5 79.5 60.2 64.1 67.0 73.1 80.8 91.1 52.2 55.8
27 22 92.4 70.0 74.5 77.9 84.9 93.9 106 60.6 64.8
30 24.4 100.5 76.1 81.0 84.7 92.4 102 115 66.0 70.5
33 27 114.2 86.5 92.1 96.3 105 116 131 75.0 80.1
36 29 120.8 91.5 97.3 102 111 123 138 79.3 84.7
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Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Figure 4. UltraSIL polymer-housed VariSTAR surge arrester–with optional insulated mounting bracket, and disconnector.
Figure 5. UltraSIL polymer-housed VariSTAR surge arrester without disconnector, for base or cable riser mounting (arrester may be horizontal or vertical with either end at line potential).
Figure 6. UltraSIL polymer-housed VariSTAR surge arrester as in Figure 4 with NEMA® crossarm hanger, see Figure 8.
Figure 7. UltraSIL polymer-housed VariSTAR surge arrester–with optional disconnector mounting bracket (no disconnector).
Dimensions and clearancesOutline drawings for common options are shown. Dimensions (shown in mm) for these arrangements are listed in Table 6.
A
B
30
IN = 5 kA, O = 83 mmIN = 10 kA, O = 89 mm
DIAMETER (All Figures):
14
23
30
MOUNTING HOLE FOR 1/2" or 12 mm O HARDWARE
A
B
43
102-127
0-102
65
30 14
30
23
C
28
30
RATED CANTILEVERSTRENGTH IS5 kA = 450 Nm10 kA = 450 Nm
MAXIMUM PULLSTRENGTH (Tension)IS 5,000 N.
H
B
14
30
28
MOUNTING HOLE FOR 1/2" or 12 mm O HARDWARE
SPACING BETWEENSHEDS IS 27 mm (All Ratings)
Table 5a. Insulation Withstand Characteristics of Optional Insulated Mounting Bracket
Insulated MountingBracket
Bracket Mounting Length Center-to-Center(mm)
Leakage Distance(mm)
Strike(mm)
Power FrequencyVoltage Withstand(60 sec, Wet, kV)
1.2/50µs Impulse(kV Crest)
Standard ForUr = 3 – 10 kV 105 150 71 36 70
Standard ForUr = 12 – 36 kV 127 226 99 48 80
7
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Table 6. Dimensional Data - UNS and UHS
Ur
Housing Designation (Digits 6 & 7Table 9)
Dimensions - Figures 4-7 page 7 (mm)
A B C H
3-10
03 162 105 146 140
04 190 105 174 168
05 218 105 202 196
06 246 105 230 224
07 272 105 255 249
08 300 105 283 277
12-36
06 246 127 230 224
07 272 127 255 249
08 300 127 283 277
09 325 127 308 302
10 353 127 336 330
11 381 127 364 358
12 406 127 390 384
13 434 127 418 412
14 462 127 446 440
15 488 127 471 465
16 – – 499 –
17 – – 527 –
18 – – 555 –
19 – – 583 –
20 – – 611 –
21 – – 639 –
Table 7. Minimum Recommended Clearances
Ur Arrester Rating (kV rms)
Clearances*Minimum Recommended(mm)
UNSIn = 5 kA
UHSIn = 10 kA
Phase-to-Ground
Phase-to-Phase
Phase-to-Ground
Phase-to-Phase
3 70 95 76 108
6 95 127 102 140
9 127 165 133 178
10 127 165 133 178
12 146 184 152 197
15 165 210 171 222
18 229 273 235 286
21 229 273 235 286
24 267 324 273 337
27 267 324 273 337
30 267 324 273 337
33 318 400 324 413
36 318 400 324 413
* All clearances are measured between centerlines of arresters or from centerline to earth.
Table 8. Catalog Numbers – VariSTAR Distribution-Class Surge Arresters
Arrester Rating
With Isolator and Insulated Hanger (Figure 3)
With Isolator, Insulated Hanger and NEMA Cross-Arm Bracket (Figure 4)
With Insulated Hanger Without Isolator (Figure 6)
3 U*S0303AFDV1AA1 U*S0303AFDV1BA1 U*S0303AFAV1AA16 U*S0604AFDV1AA1 U*S0604AFDV1BA1 U*S0604AFAV1AA19 U*S0905AFDV1AA1 U*S0905AFDV1BA1 U*S0905AFAV1AA110 U*S1005AFDV1AA1 U*S1005AFDV1BA1 U*S1005AFAV1AA112 U*S1206AFDV1AA1 U*S1206AFDV1BA1 U*S1206AFAV1AA115 U*S1507AFDV1AA1 U*S1507AFDV1BA1 U*S1507AFAV1AA118 U*S1808AFDV1AA1 U*S1808AFDV1BA1 U*S1808AFAV1AA121 U*S2109AFDV1AA1 U*S2109AFDV1BA1 U*S2109AFAV1AA124 U*S2410AFDV1AA1 U*S2410AFDV1BA1 U*S2410AFAV1AA127 U*S2711AFDV1AA1 U*S2711AFDV1BA1 U*S2711AFAV1AA130 U*S3012AFDV1AA1 U*S3012AFDV1BA1 U*S3012AFAV1AA133 U*S3313AFDV1AA1 U*S3313AFDV1BA1 U*S3313AFAV1AA136 U*S3614AFDV1AA1 U*S3614AFDV1BA1 U*S3614AFAV1AA1* Digit 2 Option: N = Normal-Duty, H = Heavy-Duty
ote:N All catalog numbers listed above include a universal wildlife protector.
8
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Catalog Number Digits:
6 & 7 = Housing Options Per Arrester Rating – Select from Table below.Ù = Standard Housing O = Housing Options
Table 9. UltraQUIK™ Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge Arresters
1 2 3 4 5 6 7
U S
Digits 6 & 7 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Total Leakage Distance (mm)
183 256 330 404 477 551 625 698 772 846 919 993 1067 1140 1214 1288 1361 1435 1509
Arrester Rating (kV rms)
3 Ù O
6 Ù O O
9 Ù O O O
10 Ù O O O
12 Ù O O O O
15 Ù O O O O O
18 Ù O O O O O O
21 Ù O O O O O
24 Ù O O O O O O
27 Ù O O O O O O O
30 Ù O O O O O O O O
33 Ù O O O O O O O O
36 Ù O O O O O O O
Notes:1. Protected leakage distance is approximately 45% of total leakage distance (mm).
2. Total leakage distance shown includes 40 mm of the insulated base/mounting bracket.
8 9 1110 1312 1514
1 = UltraSIL Polymer-Housed VariSTAR Surge Arrester U
2 = Arrester Class: N = In = 5 kA H = In = 10 kA, Class 1
3 = Arrester Type: S = VariSTAR
4 & 5 = Arrester Rating Ur (Uc): 03 = 3 kV (2.55 kV) 15 = 15 kV (12.7 kV) 27 = 27 kV (22.0 kV)
06 = 6 kV (5.1 kV) 18 = 18 kV (15.3 kV) 30 = 30 kV (24.4 kV)
09 = 9 kV (7.65 kV) 21 = 21 kV (17.0 kV) 33 = 33 kV (27.0 kV)
10 = 10 kV (8.4 kV) 24 = 24 kV (19.5 kV) 36 = 36 kV (29.0 kV)
12 = 12 kV (10.2 kV)
9
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
8 = Line Stud and Lead Options:
• 12 mm Line Terminal Options – all threaded studs are 12 mm x 30 mm long (except options L and M), stainless steel. A = without line lead B = with 300 mm long, 5 mm diameter E = with 450 mm long, 5 mm diameter H = with 750 mm long, 5 mm diameter insulated lead wire insulated lead wire insulated lead wire
C = with 300 mm long, 5 mm diameter F = with 450 mm long, 5 mm diameter J = with 750 mm long, 5 mm diameter insulated lead wire having insulated lead wire having insulated lead wire having (1) ring terminal (1) ring terminal (1) ring terminal
D = with 300 mm long, 5 mm diameter G = with 450 mm long, 5 mm diameter K = with 750 mm long, 5 mm diameter insulated lead wire having insulated lead wire having insulated lead wire having (2) ring terminals (2) ring terminals (2) ring terminals
L = with 45 mm long stud, without M = with 65 mm long stud, without insulated lead wire (will not allow insulated lead wire (will not allow use of universal wildlife protector) use of universal wildlife protector) • 3/8" Line Terminal Options – all threaded studs are 3/8" x 1-3/16" long, stainless steel.
0 = without line lead
1 = with 12" #6 AWG insulated lead wire 4 = with 18" #6 AWG insulated lead wire 7 = with 30" #6 AWG insulated lead wire
2 = with 12" #6 AWG insulated lead 5 = with 18" #6 AWG insulated lead 8 = with 30" #6 AWG insulated lead wire having (1) ring terminal wire having (1) ring terminal wire having (1) ring terminal
3 = with 12" #6 AWG insulated lead 6 = with 18" #6 AWG insulated lead 9 = with 30" #6 AWG insulated lead wire having (2) ring terminals wire having (2) ring terminals wire having (2) ring terminals
9 = Line Terminal Accessories
All line terminal accessory hardware is stainless steel (12 mm or 3/8" Ø, as required for digit 8)
Notes:
1. Wire clamps F, R, and U will accommodate #10 solid to 2/0 AWG or to 4 mm solid diameter wire. Wire clamp V will accommodate 6 mm solid or up to 14 mm diameter stranded conductor.
2. Maximum allowable torque on line terminal is 27 Nm.
3. The universal wildlife protector may only be used with 30 mm or 1-3/16” length stud.
C = No Hardware F= Nut, Wire Clamp & Universal L = 2 each: Nuts, Flat Washers & R = Nut & Wire Clamp Wildlife Protector Lock Washers (Requires “L” or “M” in Digit 8)
4545/65 mm
S = Nut, Lock Washer & T = Nut, Lock Washer (Also for U = Nut & 2 Wire Clamps V = Wire clamp, Nut, & Flat Washer Universal Wildlife Protector leads with ring terminals, see (Also for leads with ring Digit 8) terminals, see Digit 8)
Table 9. UltraQUIK™ Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge Arresters (continued)
1 2 3 4 5 6 7
U S 8 9 1110 1312 1514
10
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
10 = Ground Terminal Options
12 mm ground terminal options
With ground lead disconnector and stainless steel stud length of
D = 12 mm Ø x 25 mm (Requires “1” in digit 12)
Without ground lead disconnector, stainless steel stud length of A = 12 mm Ø x 30 mm B = 12 mm Ø x 45 mm C = 12 mm Ø x 65 mm
3/8" ground terminal options
With ground lead disconnector and stainless steel stud length of
1 = 3/8" Ø x 1" (Requires "1" in digit 12)
Without ground lead disconnector, stainless steel stud length of
0 = 3/8" Ø x 1-3/16"
11 = Ground Terminal HardwareAll ground terminal accessory hardware is stainless steel (12 mm or 3/8" Ø, as required for digit 10)
Note: Maximum allowable torque on ground terminal is 27 Nm.
12 = Bracket Configurations
13 = Mounting Options
B = No Hardware V = Wire Clamp and Nut W = Washer, (Shown with optional discon- (Shown with optional Lock Washer, and Nut nector and Insulated mounting disconnector and bracket) Insulated mounting bracket)
0 = Base Mounted Arrester 1 = Insulated Mounting Bracket 2 = Conductive Mounting Bracket 3 = Conductive Mounting Bracket (Required with optional For 3/8" Hardware For 12 mm Hardware disconnector) (Requires “0” in Digit 10 and (Requires “A”, “B” or “C” in (Available only if Digits 6 & 7 are “W” in Digit 11 ) Digit 10 and “W” in Digit 11) Housing Options 15 or less*) See Figure 10 for dimensional See Figure 11 for dimensional * For more information contact information. information. your Eaton representative.
A = Without a B = NEMA® Crossarm Hanger Mounting Bracket (Mounting Hardware Included) (Requires "1", "2" or "3" in Digit 12) See Figure 8 for dimensional information.
Table 9. UltraQUIK™ Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge Arresters (continued)
1 2 3 4 5 6 7
U S 8 9 1110 1312 1514
11
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
14 = Nameplate Information, See Figures 13 and 14
Nameplate information is per IEC 60099-4. Auxiliary nameplates are available in the following languages:
A = English B = Español – Mexico C = Españ ol – Americas D = Português – Americas E = Españ́ol – Europa F = Português – Europa G = Polski H = Français I = Norsk J = Suomeksi K = Greek L = Italiano M = Russian
15 = Packaging.
1 = Individual carton. Each arrester with accessories is shipped in an individual cardboard carton. Individual cartons are packed within a heavy duty quadwall carton having a skid bottom and suitable for double stacking within an ocean shipping container.
2 = Individual carton. Each arrester is shipped in an individual cardboard carton. Individual cartons are stacked on a pallet and shrink wrapped, suitable for shipment within NAFTA. Quantities per pallet may be adjusted to meet shipping requirements.
Table 9. UltraQUIK™ Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge Arresters (continued)
1 2 3 4 5 6 7
U S 8 9 1110 1312 1514
12 & 13 = Double Digit Mounting Options with Ground Terminal Wildlife Guard
E8 = Ground Terminal Wildlife Guard, Insulated Hanger(Shown with optional isolator), NEMA® cross-arm bracket (Arrester Mounting Hardware Included)Refer to Figures 8 and 13 for dimensional information
12
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Accessories for the UltraSIL polymer-housed VariSTAR surge arrester
Figure 8. NEMA® crossarm hanger can be specified with a "B" in digit 13 (all dimensions are as required to be in inches, per NEMA®).
ZEROTo
4.00
4.12 To
5.15
6.75
2.56
4.50
.344
1.25
.438SQUARE
.438 SQUAREHOLE
.5001.50
3/8" HARDWARE
1/2" HARDWARE
Figure 9. Conductive base mounting for use with 3/8” hardware. Can be specified with a "2" in digit 12. (Requires “0”, "A", "B", or "C" in digit 10, “W” in digit 11.)
114
11 SQUARE
11 SQUAREHOLE
13
13
8
170
9
114
(2) 13 mm O
13
8
32
32
170
13
GALVANIZED STEEL(All dimensions in mm)
Figure 10. Conductive base mounting for use with 12 mm hardware. Can be specified with a "3" in digit 12. (Requires "0", “A”, “B” or “C” in digit 10, “W” in digit 11.)
114
11 SQUARE
11 SQUAREHOLE
13
13
8
170
9
114
(2) 13 mm O
13
8
32
32
170
13
GALVANIZED STEEL(All dimensions in mm)
13
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Figure 11. Universal wildlife protector for line terminal (catalog number AV346X1C) adds 5 mm to arrester height above line terminal stud. To be used only with 3/8" or 12 mm Ø line hardware of standard length, 1-3/16" and 30 mm respectively.
20
64
26
56
SLOTSMAY BECUT HERE
UNIVERSALVALVE
OPENING
UNIVERSALVALVE
OPENINGUNIVERSALVALVEOPENING
SIDE VIEW TOP VIEW
152°
(All dimensions in mm)
87
80
Figure 13. Optional ground terminal wildlife guard (catalog number AV731X1C). (All dimensions in mm.) Left shows attachment of ground terminal wildlife guard, right images shows ground terminal wildlife guard completely installed.
42
96
50
53
12 ø199
75
Figure 12. Optional line terminal wildlife guard (catalog number AV698X1C). (All dimensions in mm.)
14
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Figure 15. In = 5 kA, UNS Auxiliary Nameplates.
Figure 14. In = 5 kA, UNS Nameplate – stamped in stainless steel top cap.
UNS
RATING (Ur) ___ kV
MMYY
5 kA
MCOV (Uc) ___ kV
Assembled in Mexico
UltraSIL® VariSTAR®DIST. ARRESTER
APARTARRAYOS VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA IEC 60099-4
Ur = kVUc = kVAdP = 20 kA sim
Ur = kVUc = kVAdP = 20 kA sim
Ur = kVUc = kVSp = 20 kA sim
PARARRAYOS VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA IEC 60099-4
(ESPANOL - MEXICO)˜
VARISTAR® SURGE ARRESTERULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 P.R. = 20 kA sym
(ENGLISH)
(ESPANOL - AMERICAS)˜
PARA-RAIOS VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA IEC 60099-4
(PORTUGUEˆS - AMERICAS)
´´
PARARRAYOS VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA CEI 60099-4
Ur = kVUc = kVAdP = 20 kA sim
LdeS = 20 kA sim
Pr = 20 kA sym
DESC. DE SOBRET. VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA IEC 60099-4
(ESPANOL - EUROPA)˜
(PORTUGUEˆS - EUROPA)
OGRANICZNIK PRZEPIEC VARISTAR®
ULTRASIL™ TYP UNS-ZNOIN = 5 kA IEC 60099-4
(POLSKI)
Ur = kVUc = kVLdP = 20 kA sym
PARAFOUDRE VARISTAR®
MODELE ULTRASIL™ UNS-ZNOIN = 5 kA CEI 60099-4
(FRANÇAIS)
APARTARRAYOS VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASE 1 IEC 60099-4
Ur = kVUc = kVAdP = 20 kA sim
Ur = kVUc = kVAdP = 20 kA sim
Ur = kVUc = kVSp = 20 kA sim
PARARRAYOS VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASE 1 IEC 60099-4
(ESPANOL - MEXICO)˜
ULTRASIL™ TYPE UHS-ZNO
IN = 10 kA CLASS 1 IEC 60099-4 P.R. = 20 kA sym
(ENGLISH)
(ESPANOL - AMERICAS)˜
PARA-RAIOS VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4
(PORTUGUEˆS - AMERICAS)
´´
PARARRAYOS VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASE 1 CEI 60099-4
Ur = kVUc = kVAdP = 20 kA sim
LdeS = 20 kA sim
Pr = 20 kA sym
DESC. DE SOBRET. VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4
(ESPANOL - EUROPA)˜
(PORTUGUEˆS - EUROPA)
OGRANICZNIK PRZEPIEC VARISTAR®
ULTRASIL™ TYP UHS-ZNOIN = 10 kA KLASA 1 IEC 60099-4
(POLSKI )
Ur = kVUc = kVLdP = 20 kA sym
PARAFOUDRE VARISTAR®
MODELE ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4
(FRANÇAIS)
VARISTAR® SURGE ARRESTER
VARISTAR® OVERSPENNINGSAVLEDERULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(NORSK)
´´
RTV = 20 kA sym
VARISTAR® YLIJÄNNITESUOJAULTRASIL™ TYYPPI UNS-ZNOIN = 5 kA IEC 60099-4
(SUOMEKSI) A¥E•IKEPAYNO M.T. VARISTAR®
ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 600
(GREEK)
´P.R. = 20 kA sym
SCARICATORE M.T. VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA CEI 60099-4
(ITALIANO)
A¥E•IKEPAYNO M.T. VARISTAR®
ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(RUSSIAN)
´
VARISTAR® OVERSPENNINGSAVLEDERULTRASIL™ TYPE UHS-ZNOIN =10 kA KLASSE 1 IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(NORSK)
´´
RTV = 20 kA sym
VARISTAR® YLIJÄNNITESUOJAULTRASIL™ TYYPPI UHS-ZNOIN = 10 kA LUOKKA 1 IEC 60099-4
(SUOMEKSI)
A¥E•IKEPAYNO M.T. VARISTAR®
ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(GREEK)
´P.R. = 20 kA sym
SCARICATORE M.T. VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4
(ITALIANO)
A¥E•IKEPAYNO M.T. VARISTAR®
ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(RUSSIAN)
´
ALEXIKEPAYNO M.T. VARISTAR®
TYPOS ULTRASIL™ UHS - ZNOIN = 10 kA IEC 60099-4 EKT PIES = 20 kA Sy m
ALEXIKEPAYNO M.T. VARISTAR®
TYPOS ULTRASIL™ UNS - ZNOIN =5 kA KLASH 1 IEC 60099-4 EKT PIES = 20 kA Sym
15
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Figure 16. In = 10 kA, Class 1, UHS Nameplate–stamped in stainless steel top cap.
UHS
RATING (Ur) ___ kV
MMYY
10 kA
MCOV (Uc) ___ kV
Assembled in Mexico
UltraSIL® VariSTAR®DIST. ARRESTER
Figure 17. In = 10 kA, Class 1, UHS Auxiliary Nameplates.
APARTARRAYOS VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA IEC 60099-4
Ur = kVUc = kVAdP = 20 kA sim
Ur = kVUc = kVAdP = 20 kA sim
Ur = kVUc = kVSp = 20 kA sim
PARARRAYOS VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA IEC 60099-4
(ESPANOL - MEXICO)˜
VARISTAR® SURGE ARRESTERULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 P.R. = 20 kA sym
(ENGLISH)
(ESPANOL - AMERICAS)˜
PARA-RAIOS VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA IEC 60099-4
(PORTUGUEˆS - AMERICAS)
´´
PARARRAYOS VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA CEI 60099-4
Ur = kVUc = kVAdP = 20 kA sim
LdeS = 20 kA sim
Pr = 20 kA sym
DESC. DE SOBRET. VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA IEC 60099-4
(ESPANOL - EUROPA)˜
(PORTUGUEˆS - EUROPA)
OGRANICZNIK PRZEPIEC VARISTAR®
ULTRASIL™ TYP UNS-ZNOIN = 5 kA IEC 60099-4
(POLSKI)
Ur = kVUc = kVLdP = 20 kA sym
PARAFOUDRE VARISTAR®
MODELE ULTRASIL™ UNS-ZNOIN = 5 kA CEI 60099-4
(FRANÇAIS)
APARTARRAYOS VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASE 1 IEC 60099-4
Ur = kVUc = kVAdP = 20 kA sim
Ur = kVUc = kVAdP = 20 kA sim
Ur = kVUc = kVSp = 20 kA sim
PARARRAYOS VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASE 1 IEC 60099-4
(ESPANOL - MEXICO)˜
ULTRASIL™ TYPE UHS-ZNO
IN = 10 kA CLASS 1 IEC 60099-4 P.R. = 20 kA sym
(ENGLISH)
(ESPANOL - AMERICAS)˜
PARA-RAIOS VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4
(PORTUGUEˆS - AMERICAS)
´´
PARARRAYOS VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASE 1 CEI 60099-4
Ur = kVUc = kVAdP = 20 kA sim
LdeS = 20 kA sim
Pr = 20 kA sym
DESC. DE SOBRET. VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4
(ESPANOL - EUROPA)˜
(PORTUGUEˆS - EUROPA)
OGRANICZNIK PRZEPIEC VARISTAR®
ULTRASIL™ TYP UHS-ZNOIN = 10 kA KLASA 1 IEC 60099-4
(POLSKI )
Ur = kVUc = kVLdP = 20 kA sym
PARAFOUDRE VARISTAR®
MODELE ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4
(FRANÇAIS)
VARISTAR® SURGE ARRESTER
VARISTAR® OVERSPENNINGSAVLEDERULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(NORSK)
´´
RTV = 20 kA sym
VARISTAR® YLIJÄNNITESUOJAULTRASIL™ TYYPPI UNS-ZNOIN = 5 kA IEC 60099-4
(SUOMEKSI) A¥E•IKEPAYNO M.T. VARISTAR®
ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 600
(GREEK)
´P.R. = 20 kA sym
SCARICATORE M.T. VARISTAR®
TIPO ULTRASIL™ UNS-ZNOIN = 5 kA CEI 60099-4
(ITALIANO)
A¥E•IKEPAYNO M.T. VARISTAR®
ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(RUSSIAN)
´
VARISTAR® OVERSPENNINGSAVLEDERULTRASIL™ TYPE UHS-ZNOIN =10 kA KLASSE 1 IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(NORSK)
´´
RTV = 20 kA sym
VARISTAR® YLIJÄNNITESUOJAULTRASIL™ TYYPPI UHS-ZNOIN = 10 kA LUOKKA 1 IEC 60099-4
(SUOMEKSI)
A¥E•IKEPAYNO M.T. VARISTAR®
ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(GREEK)
´P.R. = 20 kA sym
SCARICATORE M.T. VARISTAR®
TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4
(ITALIANO)
A¥E•IKEPAYNO M.T. VARISTAR®
ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym
(RUSSIAN)
´
ALEXIKEPAYNO M.T. VARISTAR®
TYPOS ULTRASIL™ UHS - ZNOIN = 10 kA IEC 60099-4 EKT PIES = 20 kA Sy m
ALEXIKEPAYNO M.T. VARISTAR®
TYPOS ULTRASIL™ UNS - ZNOIN =5 kA KLASH 1 IEC 60099-4 EKT PIES = 20 kA Sym
16
Catalog Data CA235029ENEffective February 2016
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Eaton has set the standard for design, manufacturing and delivery of polymeric distribution-class arresters with its Cooper Power™ series UltraSIL™ polymer-housed arrester family. UltraSIL polymer-housed surge arresters incorporate the industry recognized superior polymer housing material – silicone rubber.
Eaton's Cooper Power series VariSTAR™ distribution-class surge arresters are part of the UltraSIL polymer-housed surge arrester product line. VariSTAR surge arresters are available in Normal-Duty, Heavy-Duty and Riser Pole classifications and provide superior overvoltage protection for any electric distribution system.
ConstructionThe patented construction of UltraSIL polymer-housed arresters begins with Metal Oxide Varistors (MOVs) manufactured at our Olean, NY facility. Manufacturing our own MOVs allows for strict quality control over all aspects of disk production. Every MOV must pass a series of physical and electrical tests designed to ensure that only disks meeting strict quality standards are used in UltraSIL arresters. Eaton's MOV disk design has proven its reliability and protective ability through many years of field service.
The MOV disks are combined with aluminum end electrodes and are encapsulated in a high-strength composite wrap insulating material on our fully automated assembly line using strict quality control processes that eliminate manufacturing variances. The composite collar is cured to the MOV disk stack to form a solid insulation MOV disk module system that is inserted and bonded to the industry leading track resistant UltraSIL silicone rubber housing.
Eaton's exclusive patented manufacturing process forms a secondary moisture seal under the primary silicone rubber housing seal, which makes the arrester impervious to moisture and capable of withstanding extreme electrical, environmental and cantilever load conditions. The composite wrapped UltraSIL polymer-housed arrester design represents a quantum leap in polymer arrester technology.
Following assembly, each arrester is subjected to a battery of electrical tests to assure the highest quality and in-service field performance.
UltraSIL™ polymer-housed VariSTAR™ IEEE®surge arresters; normal-duty (5 kA), heavy-duty, and riser pole (10 kA) for MV systems to 36 kV
General
Surge ArrestersCatalog Data CA235005EN
Effective May 2015 Supersedes March 2015
COOPER POWERSERIES
FeaturesUltraSIL silicone rubber polymer-housing has undergone a wide range of design tests to determine the optimum shed configuration. In addition, long term environmental testing has verified the lifetime superiority of silicone rubber when compared to other polymeric insulating materials.
Independent laboratory tests have verified the superiority of silicone rubber in terms of non-wetting surfaces, resistance to UV degradation and surface tracking, performance in contaminated environments, chemical inertness, temperature stability and other important insulating properties. UltraSIL silicone rubber polymer-housing will not support biological growth (algae and mildew), is non-flammable and will not support combustion.
An optional insulated mounting base is available to allow connecting to a wide variety of brackets. The insulated base, made of glass filled polyester, has been designed to provide needed mechanical strength for installation and severe loading conditions.
A ground lead isolator is also available. The isolator removes the ground terminal from the arrester in the unlikely event of arrester failure, thus preventing a permanent system fault. An isolator that has operated gives visual indication of internal damage to the arrester and the need for arrester replacement. See Figure 2 for the isolator operating characteristics.
The optional universal wildlife protector has two self-adjusting "valve" style openings which vary from 0 to 0.75" in diameter, thus allowing for a large variety of conductor/insulation sizes while providing optimum wildlife protection. (See page 11, Figure 8 for a dimensional diagram.)
Customers looking to improve system reliability by minimizing wildlife related outages now have multiple options. In addition to the universal wildlife protector featuring two self-adjusting "valve" style openings, Eaton also offers the more robust line terminal wildlife guard. The line terminal wildlife guard is easily retrofitted to existing arresters installations and provides increased electrical insulation for the high-voltage terminal of the arrester. The flexible design of the
line terminal wildlife guard allows insertion of the lead wire through the bottom of the integral molded flanges. The access holes molded above the flanges will allow conductor sizes ranging from 0 to 0.50” in diameter (OD). The line terminal wildlife guard geometry allows water to shed away from the surface area of the animal guard while minimizing ice build up and maintaining flexibility through extreme operating temperatures. (Refer to page 11, Figure 9 for a dimensional diagram.)
For complete wildlife resistance, the ground terminal wildlife guard can easily be installed alongside the line terminal wildlife guard or universal wildlife protector. The ground terminal wildlife guard is a compact and economical guard that ensures wildlife is unable to come in contact with energized objects while on a grounded surface.(Refer to page 11, Figure 10 for a dimensional diagram.)
OperationThe operation of VariSTAR arresters is typical of gapless metal oxide arresters. During steady state conditions, line-to-ground voltage is applied continuously across the arrester terminals. When surges occur, VariSTAR arresters immediately limits the overvoltage to the required protective level by conducting the surge current to ground. Upon passage of the surge, the arrester returns to its initial state, conducting minimal leakage current.
The protective characteristics of VariSTAR arresters provide excellent overvoltage protection for distribution system equipment. (See page 6 for protective characteristics.)
Design testingThe housing material, internals and hardware work together as a system and must stand up to years of exposure to environmental extremes.
To assure a superior level of performance, both the components and the assembled arrester units have been subjected to a program of testing that accurately simulates years of exposure to actual field conditions. Testing includes:• IEEE Std C62.11-2005™ standard Testing – Full certification to
the performance requirements by an independent laboratory. A certified test report is available under Bulletin Number 95062. Additional reference documents are listed on page 14.
Production testsA complete production test program ensures a quality product. Each metal oxide varistor receives a series of electrical tests. Quality is demonstrated by a series of destructive tests performed on every batch of varistors. Listed are the tests performed on the varistors:• 100% Physical Inspection• 100% Discharge Voltage test• 100% V1mA/cm2
• 100% Leakage Current at 80% of V1mA/cm2 Voltage (Watts Loss)• Batch High-current, Short-duration test• Batch Thermal Stability test• Batch Aging test
Each fully assembled VariSTAR arrester must pass the following production tests:• 100% Physical Inspection• 100% Leakage Current test • 100% Partial Discharge Inception Voltage test
Figure 1. Cutaway illustration of VariSTAR distribution-class arrester.
ALUMINUMLINE ELECTRODE
METAL OXIDEVARISTAR (MOV)DISKS
ALUMINUMGROUND
ELECTRODE
NAMEPLATEINFORMATION
STAINLESS STEELTOP CAP
LINE TERMINAL3/8 INCH STAINLESS STUD
UltraSIL SILICONERUBBER HOUSING
BONDED SOLIDINTERFACE
FIBERGLASS REINFORCEDEPOXY COMPOSITE
OPTIONALINSULATED HANGER
OPTIONALISOLATOR GROUND
LEAD DISCONNECTORkV RATING LABEL(Visible from ground)
GROUND TERMINAL3/8 INCH STAINLESS STUD
2
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
General application recommendationsThe rating of an arrester is the maximum power frequency line-to-ground voltage at which the arrester is designed to pass an operating duty-cycle test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration as outlined in the IEEE Std C62.22™ standard application guide.
Under fault conditions and other system anomalies, higher voltages can be experienced by the arrester. To ensure that the arrester ratings will not be exceeded, Eaton application engineers are available to make recommendations. The following information is normally required:
1. System maximum operating voltage.
2. System grounding conditions.
A. For four-wire circuits, grounding conditions depend upon whether the system is multi-grounded, whether it has a neutral impedance and whether common primary and secondary neutrals are used.
B. For three-wire circuits, grounding conditions depend upon whether the system is solidly grounded at the source, grounded through neutral impedance at the source transformers or ungrounded.
Consult your Eaton representative to have your individual system application needs reviewed.
Performance test characteristicsVariSTAR distribution-class arresters withstand the following design tests as described by IEEE Std C62.11-2005™ standard:• Duty Cycle:
Normal-Duty: 22 current surges of 5 kA crest, 8/20 µs waveshape.Heavy-Duty and Riser Pole: 20 current surges of 10 kA crest, 8/20 µs waveshape followed by 2 current surges of 40 kA crest, 8/20 µs waveshape.
• High-current, Short-duration Discharge: Normal-Duty: 2 current surges of 65 kA crest, 4/10 µs waveshape.Heavy-Duty and Riser Pole: 2 current surges of 100 kA crest, 4/10 µs waveshape.
• Low-Current, Long-Duration Discharge: Normal-Duty: 20 current surges of 75 A crest 2000 µs duration rectangular wave. Heavy-Duty and Riser Pole: 20 current surges of 250 A crest 2000 µs duration rectangular wave.
Following each of these tests, the arresters remain thermally stable as verified by:• Continually decreasing power values during a thirty minute power
monitoring period.• No evidence of physical or electrical deterioration.• The 5 kA (normal-duty) or 10 kA (heavy-duty and riser pole) discharge
voltages measured after each test changed less then 10% from the initial values.
In addition, full IEEE Std C62.11-2005™ standard certification has been completed and verified.
Fault current withstand testsFault current withstand tests demonstrate the ability to withstand fault currents for specific durations without expelling any internal components. All VariSTAR arrester designs have been tested in accordance with the requirements listed in IEEE Std C62.11-2005™ standard, and are non-fragmenting to the levels shown in Table 2.
Table 1. Commonly Applied Voltage Ratings of VariSTAR Arresters
System Voltage (kV rms)
Recommended Arrester Rating per IEEE Std C62.22™ standard (kV rms)
Nominal Maximum
Four-Wire Wye Multi-Grounded Neutral
Three-Wire Wye Solidly Grounded Neutral
Delta and Ungrounded Wye
2.4 2.54 — — 3
4.16Y/2.4 4.4Y/2.54 3 6 6
4.16 4.4 — — 6
4.8 5.08 — — 6
6.9 7.26 — — 9
8.32Y/4.8 8.8Y/5.08 6 9 —
12.0Y/6.93 12.7Y/7.33 9 12 —
12.47Y/7.2 13.2Y/7.62 9 15 —
13.2Y/7.62 13.97Y/8.07 10 15 —
13.8Y/7.97 14.52Y/8.38 10 15 ––
13.8 14.52 — — 18
20.78Y/12.0 22Y/12.7 15 21 —
22.86Y/13.2 24.2Y/13.87 18 24 —
23 24.34 — — 30
24.94Y/14.4 26.4Y/15.24 18 27 —
27.6Y/15.93 29.3Y/16.89 21 30 —
34.5Y/19.92 36.5Y/21.08 27 36 —
46Y/26.6 48.3Y/28 36 — —
Table 2. Fault Current Withstand Tests
Fault Current Amplitude (kA rms)
Fault Current Duration (cycles)
0.6 60
20 12
10.0
1.0
0.1
0.0110 100 1000 10000
ARRESTER FAULT CURRENT (A rms)
IGN
ITIO
N T
IME
(SE
CO
ND
S)
Figure 2. Isolator operating characteristic.
3
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Figure 3. VariSTAR arrester with isolator and insulated hanger.
A
B
DIAMETER:HEAVY DUTY = 3.5"NORMAL DUTY = 3.4”RISER POLE = 3.6”
MOUNTING HOLE FOR 1/2" HARDWARE
0.56"
1.75"
Figure 6. VariSTAR arrester with insulated hanger without isolator.
C
B
MOUNTING HOLE FOR 1/2" HARDWARE
Figure 4. VariSTAR arrester with isolator, insulated hanger and NEMA® cross-arm bracket.
A
0.56"
2.56"
1.7"
4.12"-5.15"
B
0"-4"
1.75"
Dimensions and clearancesOutline drawings for several common design options are shown in Figures 3-6. Dimensions for these designs are listed in Table 3.
Figure 5. VariSTAR arrester with isolator, insulated hanger and transformer mounting bracket.
GROUND STRAP
LINE TERMINAL
D
A
B
1.75"
Table 3. Insulation Withstand Characteristics of Optional Insulated Mounting Bracket
Insulated Mounting Bracket
Bracket Mounting Length Center-to-Center (in)
Leakage Distance(in)
Strike (in)
Power Frequency Voltage Withstand (60 sec, Wet, kV)
1.2/50 μs Impulse (kV Crest)
Standard For Rating 3-10 kV 4.1 5.9 2.8 36 70
Standard For Rating 12-36 kV 5 8.9 3.9 48 80
4
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Table 5. Housing Insulation Withstand Voltages of VariSTAR Arresters
Insulation characteristicsThe insulation characteristics of VariSTAR arrester family are shown in Table 5.
Table 4. Dimensional Data – VariSTAR Arresters
Arrester Rating (kV rms)
Standard HousingCode (Digits 6 & 7Table 10)
DimensionsFigures 3-6, page 4 (Inches)
Minimum Recommended Clearances* (in.)
Heavy-Duty Normal-Duty
A+ B C+ DPhase-to-Ground
Phase-to-Phase
Phase-to-Ground
Phase-to-Phase
3 3 6.9 4.1 5.5 8.7 3 4.25 2.75 3.75
6 4 7.9 4.1 6.5 8.7 4 5.5 3.75 5
9 5 9.0 4.1 7.6 8.7 5.25 7 5 6.5
10 5 9.0 4.1 7.6 8.7 5.25 7 5 6.5
12 6 10.0 5 8.6 8.7 6 7.75 5.75 7.25
15 7 11.1 5 9.7 8.7 6.75 8.75 6.5 8.25
18 8 12.2 5 10.8 8.7 9.25 11.25 9 10.75
21 9 13.2 5 11.8 8.7 9.25 11.25 9 10.75
24 10 14.3 5 12.9 8.7 10.75 13.25 10.5 12.75
27 11 15.3 5 13.9 14.3 10.75 13.25 10.5 12.75
30 12 16.4 5 15 14.3 10.75 13.25 10.5 12.75
33 13 17.5 5 16.1 14.3 12.75 16.25 12.5 15.75
36 14 18.5 5 17.1 14.3 12.75 16.25 12.5 15.75
ArresterMounting
Configuration
ArresterHousingCodeDigits (6 & 7)
Creep Distance (in.)
Strike(in.)
4.1" 5.0" 4.1" 5.0"
1.2/50 µs Impulse(kV crest)
1 Min. Dry(kV rms)
10 sec.Wet(kV rms)
1.2/50 µs Impulse(kV crest)
1 Min. Dry(kV rms)
10 sec.Wet(kV rms)
1.2/50 µs Impulse(kV crest)
1 Min. Dry(kV rms)
10 sec.Wet(kV rms)
1.2/50 µs Impulse(kV crest)
1 Min. Dry(kV rms)
10 sec.Wet(kV rms)
1.2/50 µs Impulse(kV crest)
1 Min. Dry(kV rms)
10 sec.Wet(kV rms)
3 7.2 3.1 78 47 24 92 50 37 70 44 24 85 53 30 70 42 24
4 10.1 4.2 91 56 36 105 55 39 79 52 34 99 56 39 82 51 33
5 13 5.2 104 64 45 117 63 52 89 55 44 109 60 52 90 62 46
6 15.9 6.3 117 78 57 126 86 59 93 61 58 119 80 59 97 72 56
7 18.8 7.3 129 87 68 137 96 71 98 62 59 122 81 63 107 81 69
8 21.7 8.4 140 96 79 148 106 83 104 65 61 126 82 67 118 89 81
9 24.6 9.4 152 105 89 159 116 94 110 68 63 130 83 72 129 98 93
10 27.5 10.5 164 114 100 171 126 105 117 72 67 136 86 78 140 106 105
11 30.4 11.5 176 123 110 183 135 116 125 77 71 142 90 83 152 114 116
12 33.3 12.6 189 131 120 195 144 127 133 82 75 149 94 89 164 122 126
13 36.2 13.6 201 139 130 207 153 137 142 88 81 158 99 96 177 130 136
14 39.1 14.7 215 148 140 220 161 147 152 94 87 167 105 102 190 138 145
15 42 15.8 228 155 150 233 170 157 162 101 93 177 112 109 204 146 153
16 44.9 16.8 242 183 158 246 178 167 173 109 101 187 120 117 218 154 162
17 47.8 17.8 255 171 169 259 185 176 185 117 109 199 128 125 233 161 169
* All clearances are measured from center line of arrester per IEEE Std C62.22™ standard.
+ With optional Wildlife Protector add 0.2 inches.
5
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Protective characteristicsVariSTAR distribution-class arresters provide excellent overvoltage protection for electrical equipment throughout distribution systems. The protective characteristics of the VariSTAR arrester family are shown in Tables 6, 7, and 8.
Table 6. Protective Characteristics – VariSTAR Normal-Duty (UNS) Arrester
Arrester Rating (kV rms)
MCOV (kV rms)
Equivalent Front-of-wave Protective Level* (kV crest)
Maximum Discharge Voltage (kV crest) 8/20 µs Current Wave
1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA
3 2.55 11 9 9.7 10.4 11.4 13 15.16 5.1 22 18.0 19.4 20.8 22.7 26 30.29 7.65 31.7 26.0 28 30 32.8 37.4 43.510 8.4 33 27.0 29.1 31.2 34.1 38.9 45.312 10.2 41.5 33.9 36.6 39.2 42.9 48.9 56.915 12.7 51.8 42.4 45.7 49 53.6 61.1 71.118 15.3 62.2 50.9 54.9 58.8 64.3 73.4 85.321 17 66 54.0 58.2 62.4 68.2 77.9 90.624 19.5 77 63.0 67.9 72.8 79.6 90.8 10627 22 87.2 71.4 76.9 82.4 90.1 103 12030 24.4 97.1 79.5 85.7 91.8 100 115 13333 27 108 87.8 95.1 102 112 127 14836 29 116 95.3 103 110 120 137 160* Based on 5 kA current impulse that results in a discharge voltage cresting in 0.5 µs.
Table 7. Protective Characteristics – VariSTAR Heavy-Duty (UHS) Arrester
Arrester Rating (kV rms)
MCOV (kV rms)
Equivalent Front-of-wave Protective Level* (kV crest)
Maximum Discharge Voltage (kV crest) 8/20 µs Current Wave
1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA
3 2.55 11 8.2 8.7 9.1 9.9 10.9 12.36 5.1 21.9 16.3 17.4 18.2 19.8 21.9 24.79 7.65 33 24.6 26.1 27.3 29.8 33 37.110 8.4 35 26 27.7 29 31.6 34.9 39.412 10.2 43.9 32.7 34.8 36.4 39.7 43.9 49.515 12.7 53.1 39.6 42.1 44 48 53.1 59.818 15.3 66 49.1 52.3 54.7 59.6 65.9 74.221 17 70 52.1 55.4 58 63.2 69.9 78.724 19.5 80.9 60.2 64.1 67 73.1 80.8 91.127 22 94 70 74.5 77.9 84.9 93.9 10630 24.4 102 76.1 81 84.7 92.4 102 11533 27 116 86.5 92.1 96.3 105 116 13136 29 123 91.5 97.3 102 111 123 138* Based on 10 kA current impulse that results in a discharge voltage cresting in 0.5 µs.
Table 8. Protective Characteristics – VariSTAR Riser Pole (URS) Arrester
Arrester Rating (kV rms)
MCOV (kV rms)
Equivalent Front-of-wave Protective Level* (kV crest)
Maximum Discharge Voltage (kV crest) 8/20 µs Current Wave
1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA
3 2.55 10.3 7.7 8.2 8.6 9.4 10.3 11.76 5.1 20.7 15.5 16.4 17.2 18.7 20.7 23.39 7.65 29.8 22.3 23.7 24.7 27 29.8 33.610 8.4 31 23.2 24.6 25.7 28.1 31 3512 10.2 39.1 29.2 31.1 32.4 35.4 39.1 44.115 12.7 48.7 36.4 38.7 40.4 44.1 48.8 54.918 15.3 58.4 43.7 46.4 48.5 52.9 58.5 65.921 17 62 46.4 49.3 51.5 56.2 62.1 7024 19.5 72.3 54.1 57.5 60 65.5 72.4 81.627 22 81.4 60.9 64.7 67.6 73.8 81.6 91.930 24.4 91 68.1 72.4 75.6 82.5 91.2 10333 27 100 75 79.7 83.3 90.9 100 11336 29 108 80.6 85.6 89.4 97.6 108 122* Based on 10 kA current impulse that results in a discharge voltage cresting in 0.5 µs.
6
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Figure 7. Temporary overvoltage curve. No prior duty – 60° C ambient.
1.67
1.60
1.51
1.43
1.35
1.20
1.241.31
1.39
1.47
1.561.65
1.75
1.69
1.27
1.100
1.200
1.300
1.400
1.500
1.600
1.700
1.800
0.01 0.1 1 10 100 1000 10000
Time Duration in Seconds
Volta
ge p
er u
nit M
CO
V
RISER POLE (URS)
NORMAL DUTY (UNS) AND HEAVY DUTY (UHS)
Temporary overvoltage (TOV) capabilityThe ability to withstand 60 Hz overvoltage conditions [Temporary Overvoltage (TOV)] is shown in Figure 7 for all VariSTAR distribution-class arresters. The graph shows for a given voltage magnitude (on a Per Unit of MCOV basis), the time an arrester can survive a TOV condition without going into thermal runaway.
Ordering informationVariSTAR distribution-class arresters, an Eaton's Cooper Power series product, are supplied in a variety of customer defined options. The catalog system employed lets the number define the features of the arrester. Table 9 shows the catalog numbers for several of the most common arrester styles. Table 10 shows what each alpha-numeric character in the catalog number represents and lists several of the available options defined by these characters. A wide variety of option combinations are available, allowing users to customize the arrester to their specific needs. For further options contact your Eaton sales engineer.
Table 9. Catalog Numbers – VariSTAR Distribution-Class Surge Arresters
Arrester Rating
With Isolator and Insulated Hanger (Figure 3)
With Isolator, Insulated Hanger and NEMA Cross-Arm Bracket (Figure 4)
With Insulated Hanger Without Isolator (Figure 6)
With Isolator, Insulated Hanger and Transformer Mounting Bracket (Figure 5)
3 U*S03030A1A1A1A U*S03030A1A1B1A U*S03030A0A1A1A U*S03030A1C1C1C
6 U*S06040A1A1A1A U*S06040A1A1B1A U*S06040A0A1A1A U*S06040A1C1C1C
9 U*S09050A1A1A1A U*S09050A1A1B1A U*S09050A0A1A1A U*S09050A1C1C1C
10 U*S10050A1A1A1A U*S10050A1A1B1A U*S10050A0A1A1A U*S10050A1C1C1C
12 U*S12060A1A1A1A U*S12060A1A1B1A U*S12060A0A1A1A U*S12060A1C1C1C
15 U*S15070A1A1A1A U*S15070A1A1B1A U*S15070A0A1A1A U*S15070A1C1C1C
18 U*S18080A1A1A1A U*S18080A1A1B1A U*S18080A0A1A1A U*S18080A1C1C1C
21 U*S21090A1A1A1A U*S21090A1A1B1A U*S21090A0A1A1A U*S21090A1C1C1C
24 U*S24100A1A1A1A U*S24100A1A1B1A U*S24100A0A1A1A U*S24100A1C1C1C
27 U*S27110A1A1A1A U*S27110A1A1B1A U*S27110A0A1A1A U*S27110A1C1C1A
30 U*S30120A1A1A1A U*S30120A1A1B1A U*S30120A0A1A1A U*S30120A1C1C1A
33 U*S33130A1A1A1A U*S33130A1A1B1A U*S33130A0A1A1A U*S33130A1C1C1A
36 U*S36140A1A1A1A U*S36140A1A1B1A U*S36140A0A1A1A U*S36140A1C1C1A
* Digit 2 Option: N = Normal-Duty, H = Heavy-Duty, R = Riser Pole.
ote:N All catalog numbers listed above include a universal wildlife protector.
7
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
8 = Line Terminal Wire: 0 = No Line Terminal Wire
1 = 12", #6 AWG Insulated Wire, Stripped 1.25" both ends
4 = 18", #6 AWG Insulated Wire, Stripped 1.25" both ends
7 = 30", #6 AWG Insulated Wire,Stripped 1.25" both ends
2 = 12", #6 AWG Insulated Wire, 1 ring terminal /1 end stripped 1.25"
5 = 18", #6 AWG Insulated Wire, 1 ring terminal /1 end stripped 1.25"
8 = 30", #6 AWG Insulated Wire, 1 ring terminal /1 end stripped 1.25"
3 = 12", #6 AWG Insulated Wire, 2 ring terminals
6 = 18", #6 AWG Insulated Wire,2 ring terminals
9 = 30", #6 AWG Insulated Wire, 2 ring terminals
Table 10. VariSTAR Distribution-Class Arrester UltraQUIK™ Catalog Numbering System
Catalog Number Digits
1 = UltraSIL Polymer-Housed Arrester, U
2 = Arrester Class: N = Normal-Duty H = Heavy-Duty R = Riser Pole
3 = Arrester Type: S = VariSTAR
4 & 5 = Arrester Rating (MCOV): 03 = 3 kV (2.55 kV) 06 = 6 kV (5.1 kV)09 = 9 kV (7.65 kV) 10 = 10 kV (8.4 kV)
12 = 12 kV (10.2 kV) 15 = 15 kV (12.7 kV)18 = 18 kV (15.3 kV)
21 = 21 kV (17.0 kV)24 = 24 kV (19.5 kV)27 = 27 kV (22.0 kV)
30 = 30 kV (24.4 kV)33 = 33 kV (27.0 kV)36 = 36 kV (29.0 kV)
9 = Line Terminal Options
A = Silicon Bronze Nut, Stainless Steel Wire Clamp and Universal Wildlife Protector
B = Silicon Bronze Nut and Stainless Steel Wire Clamp
C = No Hardware D = Silicon Bronze Nut, Lock Washer, Flat Washer and Universal Wildlife Protector (For leads with ring terminals)
X = Silicon Bronze Nut, Stainless Steel Wire Clamp and Line Terminal Wildlife Guard. Reference Figure 8 for dimensional information.
Digits 6 & 7 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17
Leakage Distance
(in.)Arrester Rating (kV rms) 7.2 10.1 13.0 15.9 18.8 21.7 24.6 27.5 30.4 33.3 36.2 39.1 42.0 44.9 47.8
3 « O6 « O O9 « O O O10 « O O O12 « O O O O15 « O O O O18 « O O O O21 « O O O O24 « O O O O27 « O O O O30 « O O O O33 « O O O O36 « O O O
6 & 7 = Housing Code per Arrester Rating (Select from Table below):« = Standard Creepage Housing O = Optional Creepage Housings
1
U2 3
S4 5 6 7 8 9 10 11 12 13 14
115
8
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
10 = Isolator, with 3/8" stainless steel grounding stud
0 = No Isolator 2 = Red Isolator 4 = Blue Isolator 6 = Orange Isolator
1 = Black Isolator (Standard) 3 = Yellow Isolator 5 = White Isolator
11 = Ground Terminal Options
A = Wire Clamp with Silicon Bronze Nut (Shown with optional Isolator and Insulated Hanger)
B = No Hardware (Shown with optional Isolator and Insulated Hanger)
C = Copper Transformer Grounding Strap with Stainless Steel Lock Washer & Silicone Bronze Nut (Shown with optional Isolator and Insulated Hanger)
D = Stainless Steel Washer, Lock Washer, Silicone Bronze Nut
13 = Mounting Bracket Options
A = Without an Additional Mounting Bracket
B = NEMA Cross-Arm Bracket (Arrester Mounting Hardware Included) (Requires “1” or “2” in Digit 12) Refer to Figure 11 for dimensional information
C = Transformer Bracket(Arrester Mounting Hardware Included)(Requires “1” or “2” in Digit 12)(Reference Figures 12 & 13 for bracket dimensions by rating)
D = Option C Plus Transformer Mounting Hardware(2 each — 1/2", 13-UNC x 3/4" Bolts, Flat Washers, and Lock Washers)(Requires “1” or “2” in Digit 12)(Reference Figures 12 & 13 for bracket dimensions by rating)
12 = Base Configuration Options
0 = Insulated Base(Base Mounted Arrester)(Requires "0" in Digit 10)
1 = Insulated Hanger (Required with optional isolator)(Available only if Digits 6 & 7 are Housing Options 15 or less*)* For more information, contact your Eaton representative.
2 = Insulated Base With Conductive Mounting Strap(Requires "0" in Digit 10 and “D” in Digit 11)
Table 10. VariSTAR Distribution-Class Arrester UltraQUIK™ Catalog Numbering System (continued)
1
U2 3
S4 5 6 7 8 9 10 11 12 13 14
115
9
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
14 = Nameplate Information: 1 = IEEE Std C62.11-2005™ standard Required Data
15 = Packaging: A = Individual Carton (Assembled Terminal Hardware). Each arrester is shipped in an individual high strength cardboard carton. The top and bottom terminal hardware is assembled to the arrester. Any optional brackets or hardware are provided unassembled.
C = Bulk Packed (Assembled Terminal Hardware). Pallet sized bulk cardboard packaging for transformer mounting bracket options (Digits 13 = C or D only). Each arrester is shipped fully assembled including transformer mounting bracket. Available for 3-24 kV arresters only. Full pallet quantities only: 3-10 kV = 90, 12-18 kV = 72, 21-24 kV = 40.
3 = International, Individual Carton (Assembled Terminal Hardware). Each arrester with accessories is shipped in an individual cardboard carton. The top and bottom terminal hardware is assembled to the arrester. Individual cartons are packed within a heavy duty quadwall carton having a skid bottom and suitable for double stacking within an ocean shipping container.
Table 10. VariSTAR Distribution-Class Arrester UltraQUIK™ Catalog Numbering System (continued)
1
U2 3
S4 5 6 7 8 9 10 11 12 13 14
115
12 & 13 = Double Digit Mounting Options with Ground Terminal Wildlife Guard
E8 = Ground Terminal Wildlife Guard, Insulated Hanger(Shown with optional isolator), NEMA® cross-arm bracket (Arrester Mounting Hardware Included)Refer to Figures 10 and 11 for dimensional information
E9 = Ground Terminal Wildlife Guard, Insulated Hanger (Shown with optional isolator), transformer bracket. Reference Figures 11 - 13 for dimensions including brackets by rating.
10
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Figure 8. Universal wildlife protector (catalog number AV346X1C). (All dimensions in inches).
The universal wildlife protector has two self-adjusting "valve" style openings which vary from 0 to 0.75" in diameter, thus allowing for a large variety of conductor/insulation sizes while providing optimum wildlife protection.
Available accessories for the VariSTAR arrester
0.80"
2.50"
1.03"
2.22"
VALVEOPENING
VALVEOPENING
VALVEOPENING
SIDE VIEW TOP VIEW
152
Figure 9. Line terminal wildlife guard (catalog number AV698X1C). (All dimensions in inches.)
Figure 10. Ground terminal wildlife guard (catalog number AV731X1C). (All dimensions in inches.) Left shows attachment of ground terminal wildlife guard, right images shows ground terminal wildlife guard completely installed.
11
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Figure 11. NEMA® cross-arm bracket (catalog number AM35A1). Can be specified with a "B" in digit 13. (All dimensions in inches.)
Figure 12. Standard transformer mounting bracket for 3-24 kV arrester (part number AM36A2). Can be specified with a “C” in Digit 13. (All dimensions in inches.)
2.38"
.25"
.75"
1"
8.70"
5.70"
1.63"
2.25"
50
2.5"
2.25"
1.25"
Figure 13. Standard transformer mounting bracket for 27-36 kV arrester (part number AH46A2). Can be specified with a “C” in Digit 13. (All dimensions in inches.)
3.00”.75”
45°
14.25”
12.55”
2.13”
2.13”
2.13”
2.13”
.56”
3.40”
2.50”
3.38”
1.86”
1.50”
Figure 14. Optional transformer mounting bracket (catalog number AM36A3). Can be specified with an “N” in Digit 13. (All dimensions in inches.)
2.38"
1"
12.25"
7"
1.63"
2.5"
40
0.5"
.56 x 2.25"MTG. SLOTS(2 REQ'D)
1.25"
ZEROTo
4.00
4.12 To
5.15
6.75
2.56
4.50
.344
1.25
.438SQUARE
.438 SQUAREHOLE
.5001.50
3/8" HARDWARE
1/2" HARDWARE
12
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
Figure 15. Optional transformer mounting bracket (catalog number AM36A1). Can be specified with an “S” in Digit 13. (All dimensions in inches.)
2.38"
1"
11"
7"
1.63"
2.5"
40
0.5"
.56 x 2.25"MTG. SLOTS(2 REQ'D)
1.5"
114
11 SQUARE
11 SQUAREHOLE
13
13
8
170
9
114
(2) 13 mm O
13
8
32
32
170
13
Figure 16. Conductive base mounting for use with 3/8" hardware. Can be specified with a "2" in digit 12. (Requires "0" in digit 10, "D" in digit 11). (All dimensions in inches.)
13
Catalog Data CA235005ENEffective May 2015
UltraSIL polymer-housed VariSTAR surge arresters
www.eaton.com/cooperpowerseries
GeneralEaton set the standard for design, manufacturing and delivery of polymeric distribution arresters with its Cooper Power™ series UltraSIL™ polymer-housed arrester family. The UltraSIL polymer-housed Evolution™ surge arrester from Eaton's Cooper Power series product-line incorporates the industry recognized superior polymer-housing material – silicone rubber.
The Evolution surge arrester uses specially formulated and highly durable Metal Oxide Varistors (MOVs) in combination with a proprietary insulating ceramic ring assembly. The mating of these two proven technologies allows Eaton to offer a distribution class arrester with riser-pole protective characteristics and infinite TOV capability. The Evolution surge arrester offers significant improvements in protective characteristics and 60 Hz temporary over voltage (TOV) capability for all common over-head and riser-pole applications.
ConstructionThe patented construction of the Evolution surge arrester comprises the arrester module assembly encapsulated in a high-strength composite matrix insulating material. The components of the arrester module assembly consist of Metal Oxide Varistors (MOVs) in series with a proprietary insulating ceramic ring assembly. The insulating ceramic ring assembly withstands system voltage during steady state conditions and reduces electrical stress across the MOV disks.
The components of the arrester module assembly are encapsulated on our fully automated assembly line using strict quality control processes. The composite matrix is cured to the arrester module assembly to form a solid insulation system, which is then inserted and bonded to the industry leading track resistant UltraSIL polymer-housing material.
The composite-bonded module assembly provides a secondary moisture seal underneath the primary seal of the UltraSIL polymer-housing material. The combinations of these technologies allow the Evolution surge arrester to be impervious to moisture and capable of withstanding extreme electrical, environmental and cantilever load conditions. The composite wrapped module assembly used in the Evolution surge arrester represents a quantum leap in polymer arrester technology.
Following assembly, each arrester is subjected to a battery of electrical tests to assure the highest quality and in-service field performance.
UltraSIL™ Polymer-Housed Evolution™ (10 kA) IEEE® Surge Arresters for MV Systems to 36 kV
Surge ArresterCatalog Data CA235018EN
Effective May 2017 Supersedes January 2017
COOPER POWERSERIES
FeaturesThe Evolution surge arrester exceeds protective levels offered by standard metal oxide varistor arresters and helps compensate for two variables related to installation practices and equipment protection:
Excessive Lead Length
Aged Equipment Insulation
UltraSIL polymer-housing material has undergone a wide range of design tests to determine the optimum shed configuration. In addition, long term environmental testing has verified the lifetime superiority of silicone rubber when compared to other polymeric insulating materials.
Independent laboratory tests have verified the superiority of polymer-housing material in terms of non-wetting surfaces, resistance to UV degradation and surface tracking, performance in contaminated
environments, chemical inertness, temperature stability and other important insulating properties. UltraSIL polymer-housing material will not support biological growth (algae and mildew), is non-flammable and will not support combustion.
An optional insulated mounting hanger is available to allow connecting to a wide variety of brackets. The insulated hanger, made of glass-filled polyester, has been designed to provide needed mechanical strength for installation and severe loading conditions.
A ground lead isolator is also available. The isolator removes the ground terminal from the arrester in the unlikely event of arrester failure, thus preventing a permanent system fault. An isolator that has operated gives visual indication of internal damage to the arrester and the need for arrester replacement. See Figure 2 for the isolator operating characteristics.
An optional universal wildlife protector has two self-adjusting "valve" style openings which vary from 0 to 0.75" in diameter, thus allowing for a large variety of conductor/insulation sizes while providing optimum wildlife protection. (See page 12, Figure 8 for a dimensional diagram.)
Customers looking to improve system reliability by minimizing wildlife related outages now have multiple options. In addition to the universal wildlife protector, Eaton's Cooper Power series also offers the more robust line terminal wildlife guard. The line terminal wildlife guard is easily retrofitted to existing arrester installations and provides increased electrical insulation for the high voltage terminal of the arrester. The flexible design of the line terminal wildlife guard allows insertion of the lead wire through the bottom of the integral molded flanges. The access holes molded above the flanges will allow conductor sizes ranging from 0 to 0.50" in diameter (OD). The line terminal wildlife guard's geometry allows water to shed away from the surface area of the animal guard while minimizing ice buildup and maintaining flexibility through extreme operating temperatures. See Figure 9 for a dimensional diagram.
For complete wildlife resistance, the ground terminal wildlife guard can easily be installed alongside the line terminal wildlife guard or universal wildlife protector. The ground terminal wildlife guard is a compact and economical guard that ensures wildlife is unable to come in contact with energized objects while on a
grounded surface. See Figure 10 for a dimensional diagram.
OperationThe operation of Evolution surge arresters differs from conventional metal oxide arresters. During steady-state conditions, the insulating ceramic ring assembly withstands system voltage while reducing electrical stress on the MOV disks. When surges occur, the insulating ceramic ring assembly sparks over, leaving only the MOV disks in the circuit. The result is much lower discharge voltages as compared to standard heavy duty and riser pole metal oxide arresters. The added insulating ceramic ring assembly extends TOV capability for levels up to 1.78 P/U forever. Improving the Evolution surge arrester's resistance to overvoltage conditions reduces system maintenance related to arresters and helps improve system reliability.
Figure 1. Cutaway illustration of the Evolution Distribution Surge Arrester.
STAINLESS STEEL TOPCAP
NAMEPLATEINFORMATION
ALUMINUM LINE ELECTRODE
INSULATING CERAMIC RING ASSEMBLY
BONDED SOLID INTERFACE
UltraSIL POLYMER-HOUSING MATERIAL
METAL OXIDE VARISTOR
FIBERGLASS REINFORCED EPOXY COMPOSITE
OPTIONAL INSULATING HANGER
LINE TERMINAL3/8 INCH STAINLESS STEEL STUD
ALUMINUM GROUND ELECTRODE
OPTIONAL GROUND LEAD DISCONNECT KV RATING
LABEL(Visible from ground)
GROUND TERMINAL3/8 INCH STAINLESS STEEL STUD
INSULATING CERAMIC RING ASSEMBLY
METAL OXIDE VARISTOR
2
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
Design testingThe housing material, internals and hardware work together as a system and must stand up to years of exposure to environmental extremes. To assure a superior level of performance, both the components and assembled arrester units have been subjected to a program of testing that accurately simulates years of exposure to actual field conditions. Testing includes:
IEEE Std C62.11™ standard testing – Full certification to performance requirements by an independent laboratory. Reference CP0804, UltraSIL Polymer-Housed Evolution Surge Arrester Certified Test Report for details. Additional reference documents are listed on page 14.
To demonstrate the resistance of a composite wrapped module to moisture ingress Eaton performed the Water Immersion Test on the Evolution surge arrester without the polymer-housing material. This test was completed in accordance with IEEE Std C62.11™-2005 standard, Section 8.22, and IEC 60099-4, Ed 2 2004. The arrester sample passed the test by demonstrating less than 5% change in residual voltage, less than 20% change in power loss, less than 10pC of internal partial discharge with no signs of physical damage. A test report is available upon request.
Production testsA complete production test program ensures a quality product. Each metal oxide varistor receives a series of electrical tests. Quality is demonstrated by a series of destructive tests performed on every batch of varistors. Listed are the production tests performed on the varistors:• 100% Physical Inspection• 100% Discharge Voltage test• 100% V1mA/cm2
• 100% Leakage Current at 80% of V1mA/cm2 Voltage• Batch High-current, Short-duration test• Batch Thermal Stability test• Batch Aging test
Each fully assembled arrester must pass the following production tests:• 100% Physical Inspection• 100% Partial Discharge Inception Voltage test• 100% 60 Hz Sparkover Level test
Table 1. Commonly Applied Voltage Ratings of Evolution Surge Arresters
System Voltage(kV rms)
Recommended Arrester Rating per IEEE Std C62.22™ standard(kV rms)
Nominal Maximum
Four-Wire Wye Multi-Grounded Neutral
Three-Wire Wye Solidly Grounded Neutral Delta and Ungrounded Wye
Standard MOV Arrester URT
Standard MOV Arrester *URT
Standard MOV Arrester *URT
2.4 2.54 — — — — 3 3
4.16Y/2.4 4.4Y/2.54 3 3 6 3 6 3
4.16 4.4 — — — — 6 3
4.8 5.08 — — — — 6 6
6.9 7.26 — — — — 9 6
8.32Y/4.8 8.8Y/5.08 6 6 9 6 — —
12.0Y/6.93 12.7Y/7.33 9 9 12 9/10 — —
12.47Y/7.2 13.2Y/7.62 9 9 15 9/10 — —
13.2Y/7.62 13.97Y/8.07 10 10 15 10 — —
13.8Y/7.97 14.52Y/8.38 10 10 15 10 –– —
13.8 14.52 — — — — 18 10
20.78Y/12.0 22Y/12.7 15 15 21 15 — —
22.86Y/13.2 24.2Y/13.87 18 18 24 18 — —
23 24.34 — — — — 30 18
24.94Y/14.4 26.4Y/15.24 18 18 27 18 — —
27.6Y/15.93 29.3Y/16.89 21 21 30 21 — —
34.5Y/19.92 36.5Y/21.08 27 27 36 27 — 27
46Y/26.6 48.3Y/28 36 36 — — — —* Recommended arrester ratings for the Evolution arrester for 3-Wire Solidly Grounded Neutral, Delta and Ungrounded Wye circuits are based upon 5% regulation error.
3
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
General application recommendationsThe rating of an arrester is the maximum power frequency line-to-ground voltage at which the arrester is designed to pass an operating duty-cycle test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration as outlined in the IEEE Std C62.22™ standard application guide.
Under fault conditions and other system anomalies, higher voltages can be experienced by the arrester. To ensure that the arrester ratings will not be exceeded, Eaton application engineers are available to make recommendations. The following information is normally required:
1. System maximum operating voltage.
2. System grounding conditions.
A. For four-wire circuits, grounding conditions depend upon whether the system is multi-grounded, whether it has a neutral impedance and whether common primary and secondary neutrals are used.
B. For three-wire circuits, grounding conditions depend upon whether the system is solidly grounded at the source, grounded through neutral impedance at the source transformers or ungrounded.
Consult your Eaton representative to have your individual system application needs studied.
Performance test characteristicsEvolution distribution class surge arresters withstand the following design tests as described by IEEE Std C62.11™ standard:• Duty Cycle:
22 current surges of 10 kA crest, 8/20 µs waveshape.• High-Current, Short-Duration Discharge:
2 current surges of 100 kA crest, 4/10 µs waveshape.• Low-Current, Long-Duration Discharge:
20 current surges of 250 A crest 2000 µs duration rectangular wave.
Following each of these tests, the arresters remain thermally stable as verified by:• Continually decreasing power values during a thirty minute power
monitoring period.• No evidence of physical or electrical deterioration.• The 10 kA discharge voltages measured after each test changed
less then 10% from the initial values.
In addition, full IEEE Std C62.11™ standard certification has been completed and verified.
Fault current withstand testsFault current withstand tests demonstrate the ability to withstand fault currents for specific durations without expelling any internal components. All Evolution distribution class surge arrester designs have been tested in accordance with the requirements listed in IEEE Std C62.11™ standard, and are non-fragmenting to the levels shown in Table 2.
Table 2. Fault Current Withstand Tests
Fault Current Amplitude(kA rms)
Fault Current Duration(cycles)
0.6 60
20.0 12
10.0
1.0
0.1
0.0110 100 1000 10000
ARRESTER FAULT CURRENT (A rms)
IGN
ITIO
N T
IME
(SE
CO
ND
S)
Figure 2. Isolator operating characteristic.
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Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
Dimensions and clearancesOutline drawings for several common design options are shown in Figures 3-6. Dimensions for these designs are listed in Table 3.
Figure 3. Evolution surge arrester with isolator and insulated hanger.
A
B
DIAMETER= 3.45”
MOUNTING HOLE FOR 1/2" HARDWARE
0.56"
1.75"
Figure 4. Evolution surge arrester with isolator, insulated hanger and NEMA® cross-arm bracket.
A
0.56"
2.56"
1.7"
4.12"-5.15"
B
0"-4"
1.75"
Table 3. Insulation Withstand Characteristics of Optional Insulated Mounting Bracket
Insulated Mounting Bracket
Bracket Mounting Length Center-to-Center (in)
Leakage Distance(in)
Strike (in)
Power Frequency Voltage Withstand (60 sec, Wet, kV)
1.2/50 μs Impulse (kV Crest)
Standard For Rating 3-10 kV 4.1 5.9 2.8 36 70
Standard For Rating 12-36 kV 5 8.9 3.9 48 80
5
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
Figure 5. Evolution surge arrester with isolator, insulated hanger and transformer mounting bracket.
GROUND STRAP
LINE TERMINAL
D
A
B
Figure 6. Evolution surge arrester without isolator including insulated hanger and NEMA® cross-arm bracket.
C
B
MOUNTING HOLE FOR 1/2" HARDWARE
* All clearances are measured from center line of arrester per IEEE Std C62.22™ standard.
+ With optional Wildlife Protector add 0.2 inches.
Table 4. Dimensional Data – Evolution Surge Arresters
ArresterRating(kV rms)
StandardHousingCode(Digits 6 & 7, Table 8)
DimensionsFigures 3-6(Inches)
Minimum Recommended Clearances* (in.)
Heavy Duty
A+ B C+ DPhase-to-Ground
Phase-to-Phase
3 04 7.9 4.1 6.5 8.7 3.00 4.256 05 9.0 4.1 7.6 8.7 4.00 5.509 05 9.0 4.1 7.6 8.7 5.25 7.0010 05 9.0 4.1 7.6 8.7 5.25 7.0012 07 11.1 5.0 9.7 8.7 6.00 7.7515 07 11.1 5.0 9.7 8.7 6.75 8.7518 08 12.2 5.0 10.8 8.7 9.25 11.2521 09 13.2 5.0 11.8 8.7 9.25 11.2524 10 14.3 5.0 12.9 8.7 10.75 13.2527 11 15.3 5.0 13.9 14.3 10.75 13.2530 12 16.4 5.0 15.0 14.3 10.75 13.2533 13 17.5 5.0 16.1 14.3 12.75 16.2536 14 18.5 5.0 17.1 14.3 12.75 16.25
1.75"
6
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
Insulation characteristicsThe insulation characteristics of the Evolution surge arrester family are shown in Table 5.
Protective characteristicsEvolution distribution class surge arresters provide excellent overvoltage protection for electrical equipment throughout distribution systems. The protective characteristics of the Evolution surge arrester are shown in Table 6.
Table 5. Housing Insulation Withstand Voltages of Evolution Surge ArrestersArrester
Mounting Configuration
ArresterHousingCode (Digits 6 & 7)
Creep Distance
(in.)Strike(in.)
1.2/50 µsImpulse(kV crest)
1 min. Dry(kV rms)
10 sec.Wet(kV rms)
1.2/50 µsImpulse(kV crest)
1 min. Dry(kV rms)
10 sec.Wet(kV rms)
1.2/50 µsImpulse(kV crest)
1 min. Dry(kV rms)
10 sec.Wet(kV rms)
1.2/50 µsImpulse(kV crest)
1 min. Dry(kV rms)
10 sec.Wet(kV rms)
1.2/50 µsImpulse(kV crest)
1 min. Dry(kV rms)
10 sec.Wet(kV rms)
04 10.1 4.2 91 56 36 105 55 39 79 52 34 99 56 39 82 51 3305 13.0 5.2 104 64 45 117 63 52 89 55 44 109 60 52 90 62 4606 15.9 6.3 117 78 57 126 86 59 93 61 58 119 80 59 97 72 5607 18.8 7.3 129 87 68 137 96 71 98 62 59 122 81 63 107 81 6908 21.7 8.4 140 96 79 148 106 83 104 65 61 126 82 67 118 89 8109 24.6 9.4 152 105 89 159 116 94 110 68 63 130 83 72 129 98 9310 27.5 10.5 164 114 100 171 126 105 117 72 67 136 86 78 140 106 10511 30.4 11.5 176 123 110 183 135 116 125 77 71 142 90 83 152 114 11612 33.3 12.6 189 131 120 195 144 127 133 82 75 149 94 89 164 122 12613 36.2 13.6 201 139 130 207 153 137 142 88 81 158 99 96 177 130 13614 39.1 14.7 215 148 140 220 161 147 152 94 87 167 105 102 190 138 14515 42.0 15.8 228 155 150 233 170 157 162 101 93 177 112 109 204 146 15316 44.9 16.8 242 183 158 246 178 167 173 109 101 187 120 117 218 154 16217 47.8 17.8 255 171 169 259 185 176 185 117 109 199 128 125 233 161 169
4.1" 5.0"4.1" 5.0"
* The Front-of-Wave Protective Level is the larger of the Front-of-Wave Sparkover Voltage (FOW) or Equivalent Front-of-Wave Discharge Voltage (EFOW) per IEEE Std. C62.11-2005 standard. The Front-of-Wave Sparkover Level is based on a voltage waveform having a rate of rise of 100 kV/µs for each 12 kV of arrester duty cycle rating. The EFOW is a discharge voltage resulting from a 10 kA current impulse cresting in 0.5µs. The Front-of-Wave Protective Level for the Evolution arrester is the FOW Sparkover Level.
** The 3rd Party test report CP1012 is available on www.eaton.com/cooperpowerseries website and includes test data for standard production 10 kV, 18 kV & 27 kV arresters.
Table 6. Protective Characteristics – Evolution Surge Arrester Heavy Duty (URT)
Arrester Rating (kV rms)
MCOV (kV rms)
Minimum 60 Hz Sparkover (kV crest/ √2)
Front-of-wave Protective Level* (kV crest)
3rd Party Front-of-Wave Protective Level** (kV crest)
Maximum Discharge Voltage (kV crest)8/20 µs Current Wave
Switching Surge kV Crest)
1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA 500 A3 2.55 4.54 20.0 — 8.1 8.7 9.3 10.2 11.6 13.5 7.66 5.10 9.08 23.0 — 16.1 17.4 18.6 20.3 23.3 27.0 15.29 7.65 13.6 32.4 — 18.9 20.3 21.8 23.8 27.3 31.6 17.810 8.40 15.0 32.4 24.3 20.1 21.6 23.2 25.4 29.0 33.7 19.012 10.2 18.2 52.4 — 25.2 27.2 29.1 31.8 36.4 42.2 23.815 12.7 22.6 55.4 — 30.5 32.8 35.2 38.5 44.0 51.1 28.818 15.3 27.2 64.8 51.1 37.8 40.8 43.7 47.8 54.6 63.4 35.721 17.0 30.3 64.8 — 40.1 43.2 46.3 50.6 57.9 67.2 37.824 19.5 34.7 87.8 — 46.4 50.0 53.6 58.6 67.0 78 43.827 22.0 39.2 97.2 66.9 53.9 58.0 62.2 68.0 78 90 50.830 24.4 43.4 117.2 — 58.6 63.2 67.7 74 85 98 55.333 27.0 48.1 120.2 — 66.6 71.7 77 84 96 112 62.836 29.0 51.6 129.6 — 70.4 76 81 89 102 118 66.4
7
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
Ordering informationEvolution surge arresters can be ordered in a variety of customer defined options. Table 7 below lists standard part numbers for our most common design options (see illustrations on pages 5-6, Figures 3-6). For other design options, use Table 8 to customize the arrester to specific needs. For further options contact your Eaton sales engineer.
Temporary overvoltage (TOV) capabilityThe ability to withstand 60 Hz overvoltage conditions [Temporary Overvoltage (TOV)] is shown in Figure 7 for all Evolution distribution-class surge arresters. The graph shows for a given voltage magnitude (on a Per Unit of MCOV basis) the time an arrester can survive a TOV condition without going into thermal runaway.
UltraSIL Housed EVOLUTION Arrester TOV Curve Per ANSI C62.11
1.7801.7801.7801.7801.7801.7801.7801.780
1.000
1.100
1.200
1.300
1.400
1.500
1.600
1.700
1.800
1.900
2.000
0.01 0.1 1 10 100 1000 10000 100000
Time Duration in Seconds
Volta
ge (p
er u
nit o
f MCO
V)
Table 7. Catalog Numbers-Evolution Distribution Class Surge Arresters
ArresterRating(kV rms)
With Isolator andInsulated Hanger(Figure 3)
With Isolator,Insulated Hangerand NEMACross-Arm Bracket(Figure 4)
With Isolator,Insulated Hangerand TransformerMounting Bracket(Figure 5)
With Insulating Hanger Without Isolator (Figure 6)
3 URT03040A1A1A1A URT03040A1A1B1A URT03040A1C1C1C URT03040A0A1A1A
6 URT06050A1A1A1A URT06050A1A1B1A URT06050A1C1C1C URT06050A0A1A1A
9 URT09050A1A1A1A URT09050A1A1B1A URT09050A1C1C1C URT09050A0A1A1A
10 URT10050A1A1A1A URT10050A1A1B1A URT10050A1C1C1C URT10050A0A1A1A
12 URT12070A1A1A1A URT12070A1A1B1A URT12070A1C1C1C URT12070A0A1A1A
15 URT15070A1A1A1A URT15070A1A1B1A URT15070A1C1C1C URT15070A0A1A1A
18 URT18080A1A1A1A URT18080A1A1B1A URT18080A1C1C1C URT18080A0A1A1A
21 URT21090A1A1A1A URT21090A1A1B1A URT21090A1C1C1C URT21090A0A1A1A
24 URT24100A1A1A1A URT24100A1A1B1A URT24100A1C1C1C URT24100A0A1A1A
27 URT27110A1A1A1A URT27110A1A1B1A URT27110A1C1C1C URT27110A0A1A1A
30 URT30120A1A1A1A URT30120A1A1B1A URT30120A1C1C1C URT30120A0A1A1A
33 URT33130A1A1A1A URT33130A1A1B1A URT33130A1C1C1C URT33130A0A1A1A
36 URT36140A1A1A1A URT36140A1A1B1A URT36140A1C1C1C URT36140A0A1A1A
ote:N Digits 2 & 3 Options "RT" replaces Normal-Duty, Heavy-Duty & Riser-Pole.
ote:N All catalog numbers listed above include a universal wildlife protector; catalog number AV346X1.
Figure 7. Temporary overvoltage curve. No prior duty – 60° C ambient.
8
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
Table 8. UltraSIL Polymer-Housed Evolution Distribution-Class Surge Arrester UltraQUIK Catalog Numbering System
A = Silicon Bronze Nut, Stainless Steel Wire Clamp & Universal Wildlife Protector. Reference Figure 8 for dimensional information.
B = Silicon Bronze Nut & Stainless Steel Wire Clamp
C = No Hardware
D = Silicon Bronze Nut, Lock Washer, Flat Washer & Universal Wildlife Protector (For leads with ring terminals) Reference Figure 7 for dimensional information.
K = Silicon Bronze Nut, Stainless Steel Wire Clamp
X = Silicon Bronze Nut, Stainless Steel Wire Clamp and line terminal wildlife guard. Reference Figure 9 for dimensional information.
Catalog Number Digits:
1 = UltraSIL Polymer-Housed Arrester: U 2 & 3 = Arrester Class: RT = Evolution 4 & 5 = Arrester Rating (MCOV): 03 = 3 kV (2.55 kV) 12 = 12 kV (10.2 kV) 21 = 21 kV (17.0 kV) 30 = 30 kV (24.4 kV) 06 = 6 kV (5.1 kV) 15 = 15 kV (12.7 kV) 24 = 24 kV (19.5 kV) 33 = 33 kV (27.0 kV) 09 = 9 kV (7.65 kV) 18 = 18 kV (15.3 kV) 27 = 27 kV (22.0 kV) 36 = 36 kV (29.0 kV) 10 = 10 kV (8.4 kV)
6 & 7 = Housing Code per Arrester Rating: Select from Table below. = Standard Creepage Housing O = Optional Creepage Housings
8 = Line Terminal Wire: 0 = No Line Terminal Wire 1 = 12", #6 AWG Insulated Wire, 4 = 18", #6 AWG Insulated Wire, 7 = 30", #6 AWG Insulated Wire, Stripped 1.25" both ends Stripped 1.25" both ends Stripped 1.25" both ends
2 = 12", #6 AWG Insulated Wire, 5 = 18", #6 AWG Insulated Wire, 8 = 30", #6 AWG Insulated Wire, 1 ring terminal /1 end stripped 1.25" 1 ring terminal /1 end stripped 1.25" 1 ring terminal /1 end stripped 1.25"
3 = 12", #6 AWG Insulated Wire, 6 = 18", #6 AWG Insulated Wire, 9 = 30", #6 AWG Insulated Wire, 2 ring terminals 2 ring terminals 2 ring terminals
9 = Line Terminal Options
Digits 6 & 7 04 05 06 07 08 09 10 11 12 13 14 15 16 17
Leakage Distance
(in.)
10.1 13.0 15.9 18.8 21.7 24.6 27.5 30.4 33.3 36.2 39.1 42.0 44.9 47.8
Arrester Rating (kV rms)
3
6 O
9 O O O
10 O O O
12 O O O
15 O O O O
18 O O O O
21 O O O O O
24 O O O O
27 O O O O
30 O O O O
33 O O O O
36 O O O
1 2 3 4 5 6 7
U R T 8 9 1110 1312 1514
9
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
10 = Isolator, with 3/8" stainless steel grounding stud 0 = No Isolator 2 = Red Isolator 4 = Blue Isolator 6 = Orange Isolator 1 = Black Isolator (Standard) 3 = Yellow Isolator 5 = White Isolator
11 = Ground Terminal Options
12 = Base Configuration Options
13 = Mounting Bracket Options
A = Stainless Steel Wire Clamp with Silicon Bronze Nut (Shown with optional Isolator and Insulated Hanger)
B = No Hardware (Shown with optional Isolator and Insulated Hanger)
C = Copper Transformer Grounding Strap with Stainless Steel Lock Washer & Silicon Bronze Nut (Shown with optional Isolator and Insulated Hanger)
D = Stainless Steel Washer, Lock Washer, Silicon Bronze Nut
0 = Insulated Base (Base Mounted Arrester) 1 = Insulated Hanger (Required with optional
isolator)(Available only if Digits 6 & 7 are Housing Options 15 or less*)* For more information, contact your Eaton representative.
2 = Insulated Base With Conductive Mounting Strap (Requires "D" in Digit 11)
A = Without an Additional Mounting Bracket
B = NEMA® Cross-Arm Bracket (Arrester Mounting Hardware Included) (Requires "1" or "2" in Digit 12)(Refer to Figure 11 for dimensional information.)
C = Transformer Bracket (Arrester Mounting Hardware Included) (Requires "1" or "2" in Digit 12)(Refer to Figures 12 and 13 for dimensions by rating.)
D = Option C plus Transformer Mounting Hardware (2 each – 1/2", 13-UNC x 3/4" Bolts, Flat Washers, and Lock Washers) (Requires "1" or "2" in Digit 12)(Refer to Figures 12 and 13 for dimensions by rating.)
Table 8. UltraSIL Polymer-Housed Evolution Distribution-Class Surge Arrester UltraQUIK Catalog Numbering System (continued)
1 2 3 4 5 6 7
U R T 8 9 1110 1312 1514
10
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
14 = Nameplate Information: 1 = IEEE Std C62.11™ standard Required Data
15 = Packaging: A = Individual Carton (Assembled Terminal Hardware). Each arrester is shipped in an individual high strength cardboard carton. The top and bottom terminal hardware is assembled to the arrester. Any optional brackets or hardware are provided unassembled.
C = Bulk Packed (Assembled Terminal Hardware). Pallet sized bulk cardboard packaging for transformer mounting bracket options (Digits 13 = C or D only). Each arrester is shipped fully assembled including transformer mounting bracket. Available for 3-24 kV arresters only. Full pallet quantities only: 3-10 kV = 90, 12-18 kV = 72, 21-24 kV = 40.
3 = International, Individual Carton (Assembled Terminal Hardware). Each arrester with accessories is shipped in an individual cardboard carton. The top and bottom terminal hardware is assembled to the arrester. Individual cartons are packed within a heavy duty quadwall carton having a skid bottom and suitable for double stacking within an ocean shipping container.
Table 8. UltraSIL Polymer-Housed Evolution Distribution-Class Surge Arrester UltraQUIK Catalog Numbering System (continued)
1 2 3 4 5 6 7
U R T 8 9 1110 1312 1514
12 & 13 = Double Digit Mounting Options with Ground Terminal Wildlife Guard
E8 = Ground Terminal Wildlife Guard, Insulated Hanger(Shown with optional isolator), NEMA® cross-arm bracket (Arrester Mounting Hardware Included)Refer to Figures 10 and 11 for dimensional information
E9 = Ground Terminal Wildlife Guard, Insulated Hanger (Shown with optional isolator), transformer bracket. Reference Figures 10, 12, and 13 for dimensional information.
11
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
Available accessories for the Evolution surge arrester
Figure 8. Universal wildlife protector (catalog number AV346X1C).
The optional universal wildlife protector has two self-adjusting "valve" style openings which vary from 0 to 0.75" in diameter, thus allowing for a large variety of conductor/insulation sizes while providing optimum wildlife protection.
0.80"
2.50"
1.03"
2.22"
VALVEOPENING
VALVEOPENING
VALVEOPENING
SIDE VIEW TOP VIEW
152
Figure 9. Line terminal wildlife guard (catalog number AV698X1C). (All dimensions in inches.)
7.82
2.938
2.08
1.951.65
ø .475
ø 3.78
Figure 10. Ground terminal wildlife guard (catalog number AV731X1C). (All dimensions in inches.) Left shows attachment of ground terminal wildlife guard, right images shows ground terminal wildlife guard completely installed.
12
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
Figure 11. NEMA® cross-arm bracket (catalog number AM35A1). Can be specified with a "B" in digit 13. (All dimensions in inches.)
2.38"
.25"
.75"
1"
8.70"
5.70"
1.63"
2.25"
50
2.5"
2.25"
1.25"
Figure 12. Standard transformer mounting bracket for 3-24 kV arrester (catalog number AM36A2). Can be specified with a “C” in Digit 13. (All dimensions in inches.)
Figure 13. Standard transformer mounting bracket for 27-36 kV arrester (catalog number AH46A2). Can be specified with a “C” in Digit 13. (All dimensions in inches.)
3.00”.75”
45°
14.25”
12.55”
2.13”
2.13”
2.13”
2.13”
.56”
3.40”
2.50”
3.38”
1.86”
1.50”ZERO
To4.00
4.12 To
5.15
6.75
2.56
4.50
.344
1.25
.438SQUARE
.438 SQUAREHOLE
.5001.50
3/8" HARDWARE
1/2" HARDWARE
2.38"
1"
12.25"
7"
1.63"
2.5"
40
0.5"
.56 x 2.25"MTG. SLOTS(2 REQ'D)
1.25"
Figure 14. Optional transformer mounting bracket (catalog number AM36A3). Can be specified with an “N” in Digit 13. (All dimensions in inches.)
13
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
Figure 15. Optional transformer mounting bracket (catalog number AM36A1). Can be specified with an “S” in Digit 13. (All dimensions in inches.)
2.38"
1"
11"
7"
1.63"
2.5"
40
0.5"
.56 x 2.25"MTG. SLOTS(2 REQ'D)
1.5"
114
11 SQUARE
11 SQUAREHOLE
13
13
8
170
9
114
(2) 13 mm O
13
8
32
32
170
13
Figure 16. Conductive base mounting for use with 3/8" hardware. Can be specified with a "2" in digit 12. (Requires "0" in digit 10, "D" in digit 11.) (All dimensions in inches.)
Additional information• MN235006EN, UltraSIL Housed Distribution-Class MOV Arrester
Installation Instructions• B235-08033, Taking Protection to the Extremes, The Evolution
Surge Arrester• B235-08022, Superior Protection for Arresters and Wildlife• CP0804, UltraSIL Polymer-Housed Evolution Surge Arrester
Certified Test Report• CP1012, UltraSIL Polymer-Housed Evolution Surge Arrester Design
Test
14
Catalog Data CA235018ENEffective May 2017
UltraSIL Polymer-Housed Evolution Surge Arresters
www.eaton.com/cooperpowerseries
GeneralEaton incorporates the latest in metal oxide varistor (MOV) technology in a porcelain design with its Cooper Power™ series VariSTAR™ Type AZL heavy-duty distribution-class MOV arrester in ratings of 3 through 36 kV. With this combination of technologies, Eaton can offer reliable and cost effective overhead protection of distribution systems.
ConstructionThe VariSTAR Type AZL arrester consists of highly nonlinear metal oxide varistors enclosed in a porcelain housing. The highly nonlinear nature of the MOV disks results in conduction of leakage current of milliamperes at nominal line-to-ground operating voltage. This small amount of leakage current (which is primarily capacitive current with a small component of resistive current) can be tolerated on a continuous basis.
The VariSTAR Type AZL design is available with or without an isolator and can be supplied with a variety of mounting brackets to satisfy a wide range of applications.
Operation The operation of the VariSTAR Type AZL is typical of gapless metal oxide arresters. During steady state conditions, nominal line-to-ground voltage is applied continuously across the arrester‘s terminals. When overvoltages occur, the VariSTAR Type AZL arrester limits the overvoltage to required protective levels by conducting the surge current. Upon passage of the overvoltage condition, the arrester returns to a highly nonlinear steady state, conducting minimal leakage current.
The superior protective characteristics of the VariSTAR Type AZL arrester provide excellent protection for distribution transformers with lower impulse withstand capabilities. Its superior reliability makes it an ideal choice for areas with high isokeraunic levels.
VariSTAR™ Type AZL heavy-duty distribution-class MOV arrester
CA235006EN-1
Surge ArrestersCatalog Data CA235006EN
Effective February 2015 Supersedes TD235007EN September 2014
COOPER POWERSERIES
Features and detailed description Production testsA complete production test program ensures a quality product. Each VariSTAR metal oxide varistor receives a series of electrical tests. Quality is further ensured by a series of destructive tests performed on every batch of varistors. Listed are the tests that are performed on the varistors:• 100% Physical Inspection• 100% Discharge Voltage Test• 100% V1mA/cm2
• 100% Leakage Current at 80% of V1mA/cm2 Voltage
• Batch High-current, Short-duration Test• Batch Thermal Stability Test• Batch Disk Aging Test
Each VariSTAR Type AZL arrester must pass the following production tests:• 100% Physical Inspection• 100% Vacuum over Fluid Seal Test• 100% Leakage Current Test• 100% RIV Test
StandardsThe VariSTAR Type AZL arrester complies with the latest revision of IEEE Std C62.11™-1987 standard “IEEE Standard for Metal Oxide Surge Arresters for AC Power Circuits”.
General application recommendationsThe rating of an arrester is the power frequency line-to-ground voltage at which the arrester is designed to pass an operating duty-cycle test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration.
Eaton's application engineers are available to make recommendations. The following information is normally required:
1. System maximum operating voltage.
2. System grounding conditions.
A. For four-wire circuits, grounding conditions depend upon whether the system is multi-grounded, whether it has a neutral impedance and whether common primary and secondary neutrals are used.
B. For three-wire circuits, grounding conditions depend upon whether the system is solidly grounded at the source, grounded through neutral impedance at the source transformers or ungrounded.
Figure 1. Cutaway illustration of VariSTAR AZL arrester.
INSULATING TERMINAL CAP
Polymer cap provides superior wildlife protection.
TOP ELECTRODE
Ensures low resistive contact to MOV disk column.
MOV DISKS
Highly nonlinear metal oxide varistors provide exceptional surge pro-tection.
HEAVY STEEL COIL SPRING
Maintains high pres-sure on disks for effective contact sur-faces; protects from mechanical shock.
COPPER STRAP
Provides a low resistance shunt for surge current discharge.
SOLDERLESS CONNECTORS
Accommodates No. 10 solid through No. 2/0 stranded line and ground leads.
ISOLATOR™ GROUND LEAD DISCONNECTOR
Provides positive isolation and visual identification if arrester becomes damaged internally.
IDENTIFICATION INFORMATION
Convenient reference for arrester type, MCOV, voltage rating and year and quarter of manufacture.
ALUMINUM SPACER
Provides additional length for extended creepage porcelain.
HIGH STRENGTH WET PROCESS GLAZED PORCELAIN
Withstands thermal and mechanical shocks; excellent washing character-istics; provides high creepage distance above and below the hanger bracket.
CA235006EN-2
Catalog Data CA235006ENEffective February 2015
VariSTAR Type AZL heavy-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries
Where unusual conditions exist (high ground resistance, high capacitive load, arc-welding equipment, etc.) the following supplementary information is necessary:
1. The unusual condition.
2. Type of construction, phase spacing, length of line, conductor size.
3. BIL of equipment and line insulation.
4. Phase-sequence components of impedances on the load side of the distribution substation.
The impedance of the transformer and the impedance and grounding of supply to the substation all affect the voltage during faults.
The Temporary Overvoltage (TOV) capability of the VariSTAR AZL arrester is shown in Figure 2.
Performance test characteristicsThe VariSTAR AZL arrester consistently withstands the following design tests as described by IEEE Std C62.11™-1987 standard:
Duty cycle20 current surges of 10 kA crest 8/20 µs waveshape followed by 2 current surges of 40 kA crest 8/20 µs waveshape.
High-current, short-duration discharge:2 current surges of 100 kA crest 4/10 µs waveshape.
Low-current, long-duration discharge:20 current surges of 250 A crest 2000 µs rectangle wave duration.
Following each of these tests, the arresters remain thermally stable as verified by:• Continually decreasing power values
during a thirty minute power monitoring period.
• No evidence of physical or electrical deterioration.
• The 10 kA (8/20 µs) discharge voltages measured after each test changed by less than 10% from the initial values.
Figure 2. Temporary overvoltage curve. No prior duty – 60° C ambient.
Table 1. Commonly Applied Voltage Ratings of the VariSTAR AZL Arrester
System Voltage(kV rms)
Recommended Arrester Rating(kV rms)
Nominal Maximum
Four-Wire WyeMulti-GroundedNeutral
Three-Wire WyeSolidly GroundedNeutral
Delta andUngroundedWye
2.4 2.54 – – 3
4.16Y/2.4 4.4Y/2.54 3 6 6
4.16 4.4 – – 6
4.8 5.08 – – 6
6.9 7.26 – – 9
8.32Y/4.8 8.8Y/5.08 6 9 –
12.0Y/6.93 12.7Y/7.33 9 12 –
12.47Y/7.2 13.2Y/7.62 9 15 –
13.2Y/7.62 13.97Y/8.07 10 15 –
13.8Y/7.97 14.52Y/8.38 10 15 –
13.8 14.52 – – 18
20.78Y/12.0 22Y/12.7 15 21 –
22.86Y/13.2 24.2Y/13.87 18 24 –
23 24.34 – – 30
24.94Y/14.4 26.4Y/15.24 18 27 –
27.6Y/15.93 29.3Y/16.89 21 30 –
34.5Y/19.92 36.5Y/21.08 27 36 –
46Y/26.6 48.3Y/28 36 – –
Time Duration in Seconds
10 100 100010.9
10000
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
Per Unit Arrester Rating
Per Unit MCOV
0.1
CA235006EN-3
Catalog Data CA235006ENEffective February 2015
VariSTAR Type AZL heavy-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries
Protective characteristicsThe protective characteristics of the VariSTAR AZL arresters are shown in Table 2.
Insulation characteristicsThe insulation characteristics of the VariSTAR AZL arresters are shown in Table 3.
Table 2. Protective Characteristics
ArresterRating(kV rms)
MCOV(kV rms)
Front-of-waveProtectiveLevel*(kV crest)
Maximum Discharge Voltage (kV crest)8/20 µs Current Wave
1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA
3 2.55 10.7 8.2 8.7 9.2 10.0 11.3 13.6
6 5.10 21.4 16.4 17.4 18.4 20.0 22.5 27.1
9 7.65 32.1 24.5 26.1 27.5 30.0 33.8 40.7
10 8.40 35.3 27.0 28.7 30.3 33.0 37.2 44.7
12 10.20 42.8 32.7 34.7 36.7 40.0 45.0 54.2
15 12.70 53.5 40.9 43.4 45.9 40.0 56.3 67.8
18 15.30 64.2 49.1 52.1 55.1 60.0 67.6 81.4
21 17.00 74.9 57.3 60.8 64.3 70.0 78.8 94.9
24 19.50 84.3 64.4 68.4 72.3 78.8 88.7 106.8
27 22.00 95.2 72.8 77.3 81.7 89.0 100.2 120.7
30 24.40 105.9 81.0 86.0 90.9 99.0 111.5 134.2
36 29.00 124.8 95.4 101.3 107.0 116.6 131.3 158.1
* Based on 10 kA current impulse that results in a discharge voltage cresting in 0.5µs.
Table 3. Insulation Characteristics
Arrester Rating (kV rms)
Creepage Strike Insulation Withstand Voltages
(in.) (cm) (in.) (cm)
1.2/50 μs Impulse (kV crest)
1 min. Dry (kV rms)
10 sec. Wet (kV rms)
3 2.8 7.1 2.0 5.1 45 15 13
6 6.6 16.8 4.5 11.4 60 21 20
9 10.4 26.4 7.0 17.8 75 27 24
10 10.4 26.4 7.0 17.8 75 27 24
12 13.2 33.5 8.9 22.6 95 35 30
15 13.2 33.5 8.9 22.6 95 35 30
18 17.9 45.5 12.0 30.5 125 42 36
21 17.9 45.5 12.0 30.5 125 42 36
24 21.7 55.1 14.4 36.6 150 70 60
27 21.7 55.1 14.4 36.6 150 70 60
30* 26.4 67.1 17.5 44.5 200 95 80
36* 26.4 67.1 17.5 44.5 200 95 80
* Not applicable to AZL19C Series.
CA235006EN-4
Catalog Data CA235006ENEffective February 2015
VariSTAR Type AZL heavy-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries
Dimensions and clearancesThe dimensions and clearances of the VariSTAR AZL arresters are shown in Figures 3, 4 and 5.
Figure 3. Dimensions for AZL1A, AZL1B, and AZL19B series.* All clearances are measured from centerline of arrester per IEEE Std C62.11™-1987 standard.
Arrester Rating (kV rms)
DimensionsMinimum Recommended Clearances*
A B C D E Phase-to-GroundPhase-to-Phase
(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)
3 9.19 23.3 5.20 13.2 6.04 15.3 10.77 27.4 4.12 10.5 3.4 8.6 5.2 13.26 11.67 29.6 5.20 13.2 8.52 21.6 13.25 33.7 4.12 10.5 4.5 11.4 6.5 16.59 14.77 37.5 5.82 14.8 11.00 27.9 15.73 40.0 4.12 10.5 5.6 14.2 8.0 20.310 14.77 37.5 5.82 14.8 11.00 27.9 15.73 40.0 4.12 10.5 5.6 14.2 8.0 20.312 17.25 43.8 6.44 16.4 12.86 32.7 17.59 44.7 4.12 10.5 6.4 16.3 8.7 22.115 17.25 43.8 6.44 16.4 12.86 32.7 17.59 44.7 4.12 10.5 7.1 18.0 9.7 24.618 20.97 53.3 7.06 17.9 15.96 40.5 20.69 52.6 4.12 10.5 9.6 24.4 12.2 31.021 20.97 53.3 7.06 17.9 15.96 40.5 20.69 52.6 4.12 10.5 9.6 24.4 12.2 31.024 24.07 61.1 7.68 19.5 18.44 46.8 23.17 58.9 4.12 10.5 11.1 28.2 14.2 36.127 24.07 61.1 7.68 19.5 21.22 53.9 32.20 81.8 4.38 11.1 11.1 28.2 14.2 36.130 27.79 70.6 8.3 21.1 24.32 61.8 35.30 89.7 4.38 11.1 11.1 28.2 14.2 36.136 27.79 70.6 8.30 21.1 24.32 61.8 35.30 89.7 4.38 11.1 13.1 33.3 17.2 43.7
Figure 4. Dimensions for AZL31B series.
ote:N Columns B, C, & D are calculated with the bracket located at the top of the bellyband region.
ote:N Mounting Lug Spacing for 3 through 24 kV is 2.5” (6.4 cm) and for 27 through 36 kV is 9.25” (23.5 cm).
*All clearances are measured from centerline of arrester per IEEE C62.11™-1987 standard..
Arrester Rating (kV rms)
Dimensions Minimum Recommended Clearances*
A B Phase-to-Ground Phase-to-Phase
(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)
3 9.19 23.3 5.20 13.2 3.4 8.6 5.2 13.26 11.67 29.6 5.20 13.2 4.4 11.2 6.5 16.59 14.77 37.5 5.82 14.8 5.6 14.2 8.0 20.310 14.77 37.5 5.82 14.8 5.6 14.2 8.0 20.312 17.25 43.8 6.44 16.4 6.4 16.3 8.7 22.115 17.25 43.8 6.44 16.4 7.1 18.0 9.7 24.618 20.97 53.3 7.06 17.9 9.6 24.4 12.2 31.021 20.97 53.3 7.06 17.9 9.6 24.4 12.2 31.024 24.07 61.1 7.68 19.5 11.1 28.2 14.2 36.127 24.07 61.1 7.68 19.5 11.1 28.2 14.2 36.130 27.79 70.6 8.30 21.1 11.1 28.2 14.2 36.136 27.79 70.6 8.30 21.1 13.1 33.3 17.2 43.7
2.75"REF.
TOP VIEW
A
B
1.69”
2.34”
2.56”
3.06” DIA.
0.20”
4.00”TO
5.00”
2.68”TO
4.00”
3.87”
A
0.20”
3.06”DIA.
C
D
B
ESIDE VIEW
IMPORTANTThe values shown in Figures 3, 4, and 5 are the minimum clearances recommended by Eaton. These clearances may be revised to meet local or system requirements for spacing or energized equipment. However, safe operating procedures must always be followed.
CA235006EN-5
Catalog Data CA235006ENEffective February 2015
VariSTAR Type AZL heavy-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries
ArresterRating(kV rms)
Minimum Recommended Clearances*
DimensionsEnclosure Application Outdoor Application
Phase-to-Ground Phase-to-Phase Phase-to-Ground Phase-to-Phase A B
(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)
3 2.25 5.7 4.05 10.3 2.50 6.4 4.30 10.9 8.38 21.3 4.39 11.2
6 3.05 7.7 5.10 13.0 3.55 9.0 5.60 14.2 10.86 27.6 4.39 11.2
9 3.80 9.7 6.10 15.5 4.55 11.6 6.85 17.4 13.96 35.5 50.1 12.7
10 4.05 10.3 6.35 16.1 4.80 12.2 7.10 18.0 13.96 35.5 5.01 12.7
12 4.55 11.6 6.85 12.4 5.75 14.6 8.05 20.5 16.44 41.8 5.63 14.3
15 5.30 13.5 7.85 19.9 6.75 17.2 9.30 23.6 16.44 41.8 5.63 14.3
18 6.15 15.6 8.70 22.1 7.85 20.0 10.40 26.4 20.16 51.2 6.25 15.9
21 7.05 17.9 9.60 24.4 9.25 23.5 11.80 30.0 20.16 51.2 6.25 15.9
24 7.85 19.9 10.90 27.7 9.85 25.0 12.90 32.8 23.26 59.1 6.87 17.4
27 8.75 22.2 11.80 30.0 11.45 29.1 14.50 36.8 23.26 59.1 6.87 17.4
Figure 5. Dimensions for AZL19C series.
* All clearances are measured from centerline of arrester and are based upon the protective characteristics of the arrester.
Ordering informationTo order a VariSTAR AZL arrester, determine the voltage rating for the intended application using Table 1.
Specify the appropriate catalog number from Table 4. Contact an Eaton representative for applications not listed.
Table 4. Ordering Information
Arrester Rating(kV rms)
Catalog Numbers: VariSTAR Type AZL Arrester
CrossarmBracket and 19.25" Line Lead
Without CrossarmBracket Crossarm Bracket
Transformer MountingBracket
Cubicle Mounted(Without Isolator)
3 AZL1A3R AZL19B3R AZL1B3R AZL31B3R AZL19C503R
6 AZL1A6R AZL19B6R AZL1B6R AZL31B6R AZL19C506R
9 AZL1A9R AZL19B9R AZL1B9R AZL31B9R AZL19C509R
10 AZL1A10R AZL19B10R AZL1B10R AZL31B10R AZL19C510R
12 AZL1A12R AZL19B12R AZL1B12R AZL31B12R AZL19C512R
15 AZL1A15R AZL19B15R AZL1B15R AZL31B15R AZL19C515R
18 AZL1A18R AZL19B18R AZL1B18R AZL31B18R AZL19C518R
21 AZL1A21R AZL19B21R AZL1B21R AZL31B21R AZL19C521R
24 AZL1A24R AZL19B24R AZL1B24R AZL31B24R AZL19C524R
27 AZL1A27R AZL19B27R AZL1B27R AZL31B27R AZL19C527R
30 AZL1A30R AZL19B30R AZL1B30R AZL31B30R
36 AZL1A36R AZL19B36R AZL1B36R AZL31B36R
A
B
2.34”
3.06” DIA.
0.20”
1.24”
3.87”
CA235006EN-6
Catalog Data CA235006ENEffective February 2015
VariSTAR Type AZL heavy-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries
VariSTAR™ AZS normal-duty distribution-class MOV arrester
GeneralEaton's Cooper Power™ series VariSTAR™ AZS normal-duty distribution-class MOV arrester in ratings of 3 through 36 kV, incorporates the latest in metal oxide varistor (MOV) technology in a porcelain design. With this combination of technologies, Eaton can offer reliable and cost effective overhead protection of distribution systems.
ConstructionThe VariSTAR AZS arrester consists of highly nonlinear metal oxide varistors enclosed in a porcelain housing. The highly nonlinear nature of the MOV disks results in conduction of leakage current of milliamperes at nominal line-to-ground operating voltage. This small amount of leakage current (which is primarily capacitive current with a small component of resistive current) can be tolerated on a continuous basis.
The VariSTAR AZS design is available with or without an isolator and can be supplied with a variety of mounting brackets to satisfy a wide range of applications.
OperationThe operation of the VariSTAR AZS arrester is typical of gapless metal oxide arresters. During steady state conditions, nominal line-to-ground voltage is applied continuously across the arrester‘s terminals. When overvoltages occur, the AZS arrester limits the overvoltage to required protective levels by conducting the surge current. Upon passage of the overvoltage condition, the arrester returns to a highly nonlinear steady state, conducting minimal leakage current.
The superior protective characteristics of the VariSTAR AZS arrester provide excellent protection for distribution transformers with lower impulse withstand capabilities. Its superior reliability makes it an ideal choice for areas with moderate isokeraunic levels.
Surge ArresterCatalog Data CA235017EN
Effective June 2015 Supersedes TD235008EN September 2014
COOPER POWERSERIES
Features and detailed description Production testsA complete production test program ensures a quality product. Each VariSTAR metal oxide varistor receives a series of electrical tests. Quality is further ensured by a series of destructive tests performed on every batch of varistors. Listed are the tests that are performed on the varistors:• 100% Physical Inspection• 100% Discharge Voltage Test• 100% V1mA/cm2
• 100% Leakage Current at 80% of V1mA/cm2 Voltage
• Batch High-current, Short-duration Test• Batch Thermal Stability Test• Batch Disk Aging Test
Each VariSTAR AZS arrester must pass the following production tests:• 100% Physical Inspection• 100% Vacuum over Fluid Seal Test• 100% Leakage Current Test
• 100% RIV Test
StandardsThe VariSTAR AZS arrester complies with the latest revision of IEEE C62.11™-1987 standard, “IEEE Standard for Metal Oxide Surge Arresters for AC Power Circuits”.
General application recommendationsThe rating of an arrester is the power frequency line-to-ground voltage at which the arrester is designed to pass an operating duty-cycle test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration.
Eaton application engineers are available to make recommendations. The following information is normally required:
1. System maximum operating voltage.
2. System grounding conditions.
A. For four-wire circuits, grounding conditions depend upon whether the system is multi-grounded, whether it has a neutral impedance and whether common primary and secondary neutrals are used.
B. For three-wire circuits, grounding conditions depend upon whether the system is solidly grounded at the source, grounded through neutral impedance at the source transformers or ungrounded.
Figure 1. Cutaway illustration of VariSTAR AZS arrester.
INSULATING TERMINAL CAP
Polymer cap provides superior wildlife protection.
TOP ELECTRODE
Ensures low resistive contact to MOV disk column.
MOV DISKS
Highly nonlinear metal oxide varistors provide exceptional surge protection.
HEAVY STEEL COIL SPRING
Maintains high pressure on disks for effective contact surfaces; protects from mechanical shock.
COPPER STRAP
Provides a low resistance shunt for surge current discharge.
SOLDERLESS CONNECTORS
Accommodates No. 10 solid through No. 2/0 stranded line and ground leads.
ISOLATOR™ GROUND LEAD DISCONNECTOR
Provides positive isolation and visual identification if arrester becomes damaged internally.
IDENTIFICATION INFORMATION
Convenient reference for arrester type, MCOV, voltage rating and year and quarter of manufacture.
ALUMINUM SPACER
Provides additional length for extended creepage porcelain.
HIGH STRENGTH WET PROCESS GLAZED PORCELAIN
Withstands thermal and mechanical shocks; excellent washing characteristics; provides high creepage distance above and below the hanger bracket.
2
Catalog Data CA235017ENEffective June 2015
VariSTAR AZS normal-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries
Where unusual conditions exist (high ground resistance, high capacitive load, arc-welding equipment, etc.) the following supplementary information is necessary:
1. The unusual condition.
2. Type of construction, phase spacing, length of line, conductor size.
3. BIL of equipment and line insulation.
4. Phase-sequence components of impedances on the load side of the distribution substation.
The impedance of the transformer and the impedance and grounding of supply to the substation all affect the voltage during faults.
Temporary overvoltage (Tov) capabilityThe Temporary Overvoltage (TOV) capability of the VariSTAR AZS arrester is shown in Figure 2.
Performance test characteristicsThe VariSTAR AZS arrester consistently withstands the following design tests as described by IEEE Std C62.11™-1987 standard:• Duty Cycle:
• 22 current surges of 5 kA crest 8/20 µs waveshape.
• High-current, Short-duration Discharge:
• 2 current surges of 65 kA crest 4/10 µs waveshape.
• Low-current, Long-duration Discharge:
• 20 current surges of 75 A crest 2000 µs rectangle wave duration.
Following each of these tests, the arresters remain thermally stable as verified by:• Continually decreasing power values during a thirty minute power
monitoring period.• No evidence of physical or electrical deterioration.• The 5 kA (8/20 µs) discharge voltages measured after each test
changed by less than 10% from the initial values.
Figure 2. Temporary overvoltage curve. No prior duty – 60° C ambient.
Time Duration in Seconds
10 100 10001
0.9
10000
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
Per Unit Arrester Rating
Per Unit MCOV
0.1
Table 1. Commonly Applied Voltage Ratings of the VariSTAR Type AZS Arrester
System Voltage(kV rms)
Recommended Arrester Rating(kV rms)
Nominal Maximum
Four-Wire WyeMulti-GroundedNeutral
Three-Wire WyeSolidly GroundedNeutral
Delta andUngroundedWye
2.4 2.54 – – 3
4.16Y/2.4 4.4Y/2.54 3 6 6
4.16 4.4 – – 6
4.8 5.08 – – 6
6.9 7.26 – – 9
8.32Y/4.8 8.8Y/5.08 6 9 –
12.0Y/6.93 12.7Y/7.33 9 12 –
12.47Y/7.2 13.2Y/7.62 9 15 –
13.2Y/7.62 13.97Y/8.07 10 15 –
13.8Y/7.97 14.52Y/8.38 10 15 –
13.8 14.52 – – 18
20.78Y/12.0 22Y/12.7 15 21 –
22.86Y/13.2 24.2Y/13.87 18 24 –
23 24.34 – – 30
24.94Y/14.4 26.4Y/15.24 18 27 –
27.6Y/15.93 29.3Y/16.89 21 30 –
34.5Y/19.92 36.5Y/21.08 27 36 –
46Y/26.6 48.3Y/28 36 – –
3
Catalog Data CA235017ENEffective June 2015
VariSTAR AZS normal-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries
Protective characteristicsThe protective characteristics of the VariSTAR AZS arresters are shown in Table 2.
Insulation characteristicsThe insulation characteristics of the VariSTAR AZS arresters are shown in Table 3.
Table 2. Protective Characteristics
Arrester Rating (kV rms) MCOV (kV rms)
Front-of-wave Protective Level* (kV crest)
Maximum Discharge voltage (kV crest)8/20 μs Current Wave
1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA
3 2.55 10.2 8.6 9.2 9.8 10.8 12.8 15.9
6 5.10 20.4 17.2 18.4 19.6 21.7 25.5 31.9
9 7.65 30.6 25.8 27.6 29.4 32.5 38.3 47.8
10 8.40 33.7 28.4 30.5 32.4 35.9 42.2 52.7
12 10.20 40.8 34.4 36.8 39.2 43.4 51.0 63.8
15 12.70 51.0 43.0 46.1 49.0 54.2 63.8 79.7
18 15.30 61.2 51.6 55.3 58.8 65.1 76.6 95.7
21 17.00 71.3 60.2 64.5 68.6 75.9 89.3 111.6
24 19.50 80.4 67.8 72.7 77.4 85.6 100.7 125.8
27 22.00 91.9 77.5 83.1 88.4 97.9 115.1 143.8
30 24.40 101.1 85.2 91.4 97.2 107.6 126.6 158.1
36 29.00 119.5 100.8 108.1 115.0 127.2 149.7 187.0
* Based on 5 kA current impulse that results in a discharge voltage cresting in 0.5µs.
Table 3. Insulation Characteristics
Arrester Rating (kV rms)
Characteristics for AZS100M, AZS101M, AND AZS103M series* Characteristics for basemount (AZS100C series)
Creepage Strike 1.2/50 us impulse (kV crest)
1 min Wet (kV rms)
10 sec Wet (kV rms)
Creepage Strike 1.2/50 us impulse (kV crest)
1 min Dry (kV rms)
10 sec Wet (kV rms)(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)
3 2.8 7.1 2.0 5.1 45 15 13 10.9 27.7 8.7 22.1 125 70 60
6 6.6 16.8 4.5 11.4 60 21 20 10.9 27.7 8.7 22.1 125 70 60
9 10.4 26.4 7.0 17.8 75 27 24 13.5 34.3 10.4 26.4 150 80 70
10 10.4 26.4 7.0 17.8 75 27 24 13.5 34.3 10.4 26.4 150 80 70
12 13.2 33.5 8.9 22.6 95 35 30 13.5 34.3 10.4 26.4 150 80 70
15 13.2 33.5 8.9 22.6 95 35 30 16.6 42.2 12.6 32.0 175 90 80
18 17.9 45.5 12.0 30.5 125 42 36 16.6 42.2 12.6 32.0 175 90 80
21 17.9 45.5 12.0 30.5 125 42 36 – – – – – – –
24 21.7 55.1 14.4 36.6 150 70 60 – – – – – – –
27 21.7 55.1 14.4 36.6 150 70 60 – – – – – – –
30** 26.4 67.1 17.5 44.5 200 95 80 – – – – – – –
36** 26.4 67.1 17.5 44.5 200 95 80 – – – – – – –
* Refer to pages 5 and 6.
** Not applicable to AZS103M Series.
4
Catalog Data CA235017ENEffective June 2015
VariSTAR AZS normal-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries
Dimensions and clearancesThe dimensions and clearances of the VariSTAR AZS arresters are shown in Figures 4, 5 and 6.
Arrester Rating (kV rms)
Dimensions Minimum Recommended Clearances*
A B Phase-to-Ground Phase-to-Phase
(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)
3 9.19 23.3 5.20 13.2 3.4 8.6 5.2 13.2
6 11.67 29.6 5.20 13.2 4.4 11.2 6.5 16.5
9 14.77 37.5 5.82 14.8 5.6 14.2 8.0 20.3
10 14.77 37.5 5.82 14.8 5.6 14.2 8.0 20.3
12 17.25 43.8 6.44 16.4 6.4 16.3 8.7 22.1
15 17.25 43.8 6.44 16.4 7.1 18.0 9.7 24.6
18 20.97 53.3 7.06 17.9 9.6 24.4 12.2 31.0
21 20.97 53.3 7.06 17.9 9.6 24.4 12.2 31.0
24 24.07 61.1 7.68 19.5 11.1 28.2 14.2 36.1
27 24.07 61.1 7.68 19.5 11.1 28.2 14.2 36.1
30 27.79 70.6 8.30 21.1 11.1 28.2 14.2 36.1
36 27.79 70.6 8.30 21.1 13.1 33.3 17.2 43.7
Figure 3. Dimensions for AZS100M and AZS101M series.* All clearances are measured from centerline of arrester per IEEE C62.11™-1987 standard.
Arrester Rating (kV rms)
Dimensions Minimum Recommended Clearances*
A B C D E Phase-to-Ground Phase-to-Phase
(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)
3 9.19 23.3 5.20 13.2 6.04 15.3 10.77 27.4 4.12 10.5 3.4 8.6 5.2 13.2
6 11.67 29.6 5.20 13.2 8.52 21.6 13.25 33.7 4.12 10.5 4.5 11.4 6.5 16.5
9 14.77 37.5 5.82 14.8 11.00 27.9 15.73 40.0 4.12 10.5 5.6 14.2 8.0 20.3
10 14.77 37.5 5.82 14.8 11.00 27.9 15.73 40.0 4.12 10.5 5.6 14.2 8.0 20.3
12 17.25 43.8 6.44 16.4 12.86 32.7 17.59 44.7 4.12 10.5 6.4 16.3 8.7 22.1
15 17.25 43.8 6.44 16.4 12.86 32.7 17.59 44.7 4.12 10.5 7.1 18.0 9.7 24.6
18 20.97 53.3 7.06 17.9 15.96 40.5 20.69 52.6 4.12 10.5 9.6 24.4 12.2 31.0
21 20.97 53.3 7.06 17.9 15.96 40.5 20.69 52.6 4.12 10.5 9.6 24.4 12.2 31.0
24 24.07 61.1 7.68 19.5 18.44 46.8 23.17 58.9 4.12 10.5 11.1 28.2 14.2 36.1
27 24.07 61.1 7.68 19.5 21.22 53.9 32.20 81.8 4.38 11.1 11.1 28.2 14.2 36.1
Figure 4. Dimensions for AZS103M series.
ote:N Columns B, C, & D are calculated with the bracket located at the top of the bellyband region
ote:N Mounting Lug Spacing for 3 through 24 kV is 2.5” (6.4 cm) and for 27 kV is 9.25” (23.5 cm).
* All clearances are measured from centerline of arrester per IEEE Std C62.11™-1987 standard.
A
B
1.69
2.34
2.56
3.06 DIA.
0.20
4.00to
5.00
2.68to
4.00
3.87
2.75"REF.
A
0.20
3.06DIA.
C
D
B
ESIDE VIEW
TOP VIEW
IMPORTANT The values shown in Figures 3, 4, and 5 are the minimum clearances recommended by Eaton. These clearances may be revised to meet local or system requirements for spacing or energized equipment. However, safe operating procedures must always be followed.
5
Catalog Data CA235017ENEffective June 2015
VariSTAR AZS normal-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries
Figure 5. Dimensions for AZS100C series.
* All clearances are measured from centerline of arrester per IEEE Std C62.11™-1987 standard.
Ordering informationTo order a VariSTAR AZS arrester, determine the voltage rating for the intended application using Table 1.
Specify the appropriate catalog number from Table 4. Contact your Eaton representative for applications not listed.
Table 4. Ordering Information
ArresterRating(kV rms)
Catalog Numbers: VariSTAR AZS Arrester
With NEMA®CrossarmBracket*
Without NEMA®CrossarmBracket*
Transformer MountingBracket*
Base Mounted(WithoutIsolator)
3 AZS101M003R AZS100M003R AZS103M003R AZS100C503
6 AZS101M006R AZS100M006R AZS103M006R AZS100C506
9 AZS101M009R AZS100M009R AZS103M009R AZS100C509
10 AZS101M010R AZS100M010R AZS103M010R AZS100C510
12 AZS101M012R AZS100M012R AZS103M012R AZS100C512
15 AZS101M015R AZS100M015R AZS103M015R AZS100C515
18 AZS101M018R AZS100M018R AZS103M018R AZS100C518
21 AZS101M021R AZS100M021R AZS103M021R –
24 AZS101M024R AZS100M024R AZS103M024R –
27 AZS101M027R AZS100M027R AZS103M027R –
30 AZS101M030R AZS100M030R – –
36 AZS101M036R AZS100M036R – –
* Protective terminal cap option available. To order option, change 0 after M in catalog number to 5. (Example: AZS101M503R)
ArresterRating(kV rms)
Minimum Recommended Clearances*
Dimension A
Enclosure Application Outdoor Application
Phase-to-Ground Phase-to-Phase Phase-to-Ground Phase-to-Phase
(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)
3 3.2 8.1 4.9 12.4 3.6 9.1 5.1 13.0 11.2 28.4
6 4.2 10.7 6.2 15.7 4.7 11.9 6.5 16.5 11.2 28.4
9 5.5 14.0 7.7 19.6 6.2 15.7 8.1 20.6 13.0 33.0
10 5.5 14.0 7.7 19.6 6.2 15.7 8.1 20.6 13.0 33.0
12 6.2 15.7 8.4 21.3 7.0 17.8 8.8 22.4 13.0 33.0
15 7.0 17.8 9.4 23.9 7.8 19.8 9.9 25.1 15.1 38.5
18 9.5 24.1 11.9 30.2 10.6 26.9 12.5 31.7 15.1 38.5
A
6
Catalog Data CA235017ENEffective June 2015
VariSTAR AZS normal-duty distribution-class MOV arrester
www.eaton.com/cooperpowerseries