manual del interruptor abb calor emag en vacio vm1
TRANSCRIPT
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VM1
Vacuum circuit-breaker
with magnetic actuator mechanism
Instruction manual BA 433/07 E
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Ihre Sicherheit hat Vorrang immer!Your safety first always!
Only install switchgear and/or switchboards in enclosed rooms suitable for
electrical equipment.
Ensure that installation, operation and maintenance are carried out by
specialist electricians only.
Comply in full with the legally recognized standards (DIN VDE / IEC), the
connection conditions of the local electrical utility and the applicable safetyat work regulations.
Observe the relevant information in the instruction manual for all actions
involving switchgear and switchboards.
Danger!
Pay special attention to the hazard notes in the instruction manual marked with
this warning symbol.
Make sure that under operation condition of the switchgear or switchboardthe specified data are not exceeded.
Keep the instruction manual accessible to all persons concerned with
installation, operation and maintenance.
The users personnel are to act responsibly in all matters affecting safety at
work and the correct handling of the switchgear.
If you have any further questions on this instruction manual, the members of ourfield organization will be pleased to provide the required information.
That's why our instruction manual begins with these recommendations:
WARNUNGAnerkannte Regeln der Technik und Betriebsanleitungen
beachten !
Gefhrliche Spannung
kann elektrischen Schock und Verbrennungen verursachen.
Vor Aufnahme von Arbeiten jeder Art dieses Gert unbedingt freischalten,
erden und kurzschlieen.
WARNINGAlways observe the instruction manual and follow the rules
of good engineering practice !
Hazardous voltage
can cause electrical shock and burns.
Disconnect power, then earth and short-circuit before proceeding
with any work on this equipment.
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Contents Page
1 Summary 5
1.1 General 5
1.2 Standards and specifications 5
1.2.1 Switchgear manufacture 5
1.2.2 Installation and operation 5
1.3 Operating conditions 5
1.3.1 Normal operating conditions 5
1.3.2 Special operating conditions 5
2 Technical data 6
2.1 Technical data
circuit-breaker 6
2.2 Technical data
control electronics 7
2.3 Technical dataAC/DC converter 8
2.4 Permissible number of switching
operations of the vacuum interrupters
in relation to breaking current 8
2.5 Dimensions 12
3 Structure and function 14
3.1 Structure of the breaker poles 14
3.2 Structure of the operating mechanism 14
3.2.1 Structure of the control module 14
3.2.2 Storage capacitor 14
3.2.3 Sensor system 14
3.2.4 Ready lamp 16
3.2.5 Mounting the VM1 on a withdrawable
assembly from another manufacturer 16
3.3 Function 16
3.3.1 Magnetic actuator 16
3.3.2 Circuit-breaker controller 16
3.3.3 Opening and closing procedure 17
Contents Page
3.3.4 Autoreclosing sequence 17
3.3.5 Quenching principle of the
vacuum interrupter 17
3.3.6 10 - pole plug-in terminal strip 17
4 Transport and storage 20
4.1 Condition on delivery 20
4.2 Packaging 20
4.3 Transport 20
4.4 Delivery 20
4.5 Intermediate storage 20
5 Installation 21
6 Commissioning / operation 21
6.1 Notes on safety at work 21
6.2 Preparatory work 21
6.3 Circuit-breaker operation 22
7 Maintenance 23
7.1 General 23
7.2 Inspection and functional testing 23
7.2.1 Switching device in general 23
7.2.2 Magnetic actuator operating mechanism 23
7.3 Maintenance 24
7.3.1 Switching device in general 24
7.3.2 Magnetic actuator operating mechanism 24
7.3.3 Breaker pole 24
7.4 Repair 25
7.4.1 Replacement of breaker parts
and accessories 25
7.4.2 Touching up surfaces 25
7.5 Spare parts and auxiliary materials 26
7.5.1 Spare parts 26
7.5.2 Auxiliary materials 27
8 Application of the X-ray regulations 27
We reserve all rights to this publication. Misuse, particularly including duplication and making available of this manual or extracts to third parties is prohibited. The information supplied is without liability. Subject to alteration.
ABB Calor Emag Mittelspannung GmbH, 2001
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1 Summary
1.1 General
(Figures 2/1 and 2/2)
The vacuum circuit-breakers of type VM1 are inten-
ded for indoor installation in air-insulated switch-
gear. Within the limits of their technical data, they
have a switching capacity which is sufficient to
withstand the loads occurring during the switchingon and off of equipment and switchgear com-
ponents under normal and fault conditions.
Vacuum circuit-breakers have particular advantages
for use in systems where the switching frequency in
the operating current range is high, and/or where a
certain number of short-circuit breaking operations
have to be reckoned with. Vacuum circuit-breakers
of type VM1 are prepared for autoreclosing opera-
tions and are notable for their especially high
operational reliability and extremely long service life
with complete freedom from maintenance.
The vacuum circuit-breakers of type VM1 in column
design can be supplied both as individual units for
stationary mounting and mounted on trucks.
1.2 Standards and specifications
1.2.1 Switchgear manufacture
The switchgear complies with the following speci-
fications in accordance with DIN VDE and the
relevant IEC publications:
VDE 0670, Part 1000 and IEC 60694
DIN VDE 0670, Part 104, and IEC 60056
DIN VDE 0847, Part 4, and IEC 61000-4.
1.2.2 Installation and operation
The relevant specifications are to be taken into
account during installation and operation,
particularly:
DIN VDE 0101, Power installations exceeding
AC 1 kV
DIN VDE 0100-410, Erection of power
installations up to 1000 V, protective measures VDE 0105, Operation of electrical installations
DIN VDE 0141, Earthing systems for special
power installations with rated voltages above 1 kV
Accident prevention regulations issued by the
appropriate professional bodies or comparable
organisations.
In Germany, these comprise the following safety
regulations:
Health and Safety at Work Standards BGV A1
and BGV A2
Safety guidelines for auxiliary and operatingmaterials
Order related details provided by ABB Calor
Emag.
1.3 Operating conditions
1.3.1 Normal operating conditions
Design to VDE 0670, part 1000, "Common
specifications for high-voltage switchgear and
controlgear standards and IEC publication 60694,
with the following limit values:
Ambient temperature:
Maximum + 40C
Maximum 24 hour average + 35C
Minimum (according to
minus 25 indoor class) 25C
Humidity
the average value of the relative
humidity, measured over a
period of 24 h, does not exceed 95%
the average value of the water
vapour pressure, over a period
of 24 h, does not exceed 2.2 kPa
the average value of the relative
humidity, over a period of
one month, does not exceed 90%
the average value of the water
vapour pressure, over a period
of one month, does not exceed 1.8 kPa
Maximum site altitude:
1000 m above sea level.
1.3.2 Special operating conditionsSpecial operating conditions are to be agreed on by
the manufacturer and user. The manufacturer must
be consulted in advance about each special
operating condition:
Site altitude over 1000 m:
Allow for the reduction in the dielectric
strength of the air.
Increased ambient temperature:
Current carrying capacity is reduced.
Provide additional ventilation for heatdissipation.
Climate:
Avoid the risk of corrosion or other damage,
e.g. to the operating mechanisms, in areas:
with high humidity and/or
with major rapid temperature fluctuations.
Implement preventive measures (e.g. electric
heaters) to preclude condensation pheno-
mena.
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Breaker Rated Rated Rated short- Short- Rated short- Rated short- Pole Weight2)
type voltage current circuit circuit circuit circuit centresbreaking breaking making durationcurrent current current
symm.1) asymm.1) (peak)1)
VM1... kV A kA kA kA s mm approx. kg
1206-16 12 630 16 17.4 40 3 150/210 90/951212-16 1250 150/210 90/95
1206-20 630 20 21.8 50 3 150/210 90/951212-20 1250 150/210 90/95
1206-25 630 25 27.3 63 3 150/210 90/951212-25 1250 150/210 90/951216-25 1600 210/275 135/140
1220-25 2000 210/275 135/1401225-25 2500 275 146
1206-31 630 31.5 34.3 80 3 150/210 97/1021212-31 1250 150/210 97/102
1216-31 1600 210/275 135/1401220-31 2000 210/275 135/140
1225-31 2500 275 146
1212-40 1250 40 43.6 100 3 210 1351216-40 1600 210/275 135/1421220-40 2000 210/275 135/1421225-40 2500 210/275 141/148
1706-16 17.5 630 16 17.4 40 3 150/210 90/951712-16 1250 150/210 90/95
1706-20 630 20 21.8 50 3 150/210 90/951712-20 1250 150/210 90/951716-20 1600 210/275 135/1401720-20 2000 210/275 135/1401725-20 2500 275 146
1706-25 630 25 27.3 63 3 150/210 90/951712-25 1250 150/210 90/951716-25 1600 210/275 135/1401720-25 2000 210/275 135/1401725-25 2500 275 146
1706-31 630 31.5 34.3 80 3 150/210 97/1021712-31 1250 150/210 97/1021716-31 1600 275 1421720-31 2000 275 1421725-31 2500 275 148
2406-16 24 630 16 17.4 40 3 210/275 100/1052412-16 1250 210/275 100/1052416-16 1600 275 1452420-16 2000 275 145
2406-20 630 20 21.8 50 3 210/275 100/1052412-20 1250 210/275 100/105
2416-20 1600 275 1452420-20 2000 275 145
2406-25 630 25 27.3 63 3 210/275 100/105
2412-25 1250 210/275 100/1052416-25 1600 275 145
2420-25 2000 275 1452425-25 2500 275 151
2 Technical data
2.1 Technical dataCircuit-breakers
1) At operating voltages lower than the rated voltage, the same values fundamentally apply
as for the rated voltage. Higher values on request.2) Individual unit without truck
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Guideline values for function times:
Closing time approx. 45...60 ms
Opening time approx. 35...45 ms
Arcing time (at 50 Hz) 15 ms
Break time 50 ms
Minimum command time on closing 20 ms
Minimum command time on opening 20 ms
Rated voltage kV 12 17.5 24
Rated frequency Hz 50/60 50/60 50/60
Rated lightning impulse withstand voltage kV 75 95 125
Rated power frequency withstand voltage kV 28 38 50
Rated of rise of transient recovery voltage kV/ s 0.34 0.42 0.47
Peak transient recovery voltage kV 20.6 30 41
Rated operating sequence O-3min-CO-3min-CO
Rated operating sequence for autoreclosing O-0.3s-CO-3min-CO
2.2 Technical data
Control electronics
a) Binary inputs
The following applies to all 5 input channels:
Electrical isolation from the electronics:
2.0 kV AC
Electrical isolation between the inputs:
2.0 kV AC
Input voltage: max. 260 V AC/DC
AC/DC operation (any polarity for DC)
Response range: 48 to 250 V AC/DC
Base load at input1): 300 k
Current consumption:
< 2 mA at 250 V AC/DC
Inputs protected from voltage surges.
b) Binary outputs
The following applies to all 5 output channels:
Electrical isolation from the electronics:
2.0 kV AC
Electrical isolation between the outputs:
2.0 kV AC
Switching voltage:
max. 400 V DC or 280 V AC
Switching current: max. 0.5 A AC/DC
On resistance: 2.1 (3.2 max.)
Off resistance: > 1000 M
Switch outputs: NOC, NCC and fleetingcontact
Duration of fleeting contact pulse: 40 ms
Output connections: varistors.
1) In general, with AC signals which are connected via long
lines, it should be checked whether the installed base load
of 300 k is sufficient (mutual capacitive coupling!) to
ensure a reliably low interference level. Otherwise, anappropriately dimensioned resistor or capacitor is to be
connected in parallel at the input terminals.
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2.3 Technical data
AC/DC converter
Input voltage ranges, optional:
Power pack A:
24 V 15% ...48 V +15%AC
24 V 15% ...60 V +15%DC
Power pack B:
110 V 15% ...240 V +10%AC/DC
Protection of power feed (must be ordered):
Power pack A:
ABB Stotz m.c.b.:
S 282 UC-K, 1,6 A
Power pack B:
ABB Stotz m.c.b.:
S 282 UC-K, 1,0 A
Power consumption on the input side during a
charging process: ca. 100 W
Power consumption in normal position: 4 W
2.4 Permissible number of switching operations of the vacuum interrupters in relation to breaking current
See figures 2/3 and 2/6.
Figure 2/2: Vacuum circuit-breaker, type VM1
for 12 kV and rated current 1250 A,
pole side.
Figure 2/1: Vacuum circuit-breaker, type VM1
for 12 kV and rated current 1250 A,
mechanism side.
Charging times of the capacitor (example for DC
voltage):
a) Initial charging on commissioning:
Power pack A: 8 50 s
Power pack B: 8 60 s
depending on the supply voltage.
In this time, the capacitor(s) is/are charged to
80 V, and an ON-OFF operating cycle isalready possible at 72 V (the Ready lamp
indicates readiness for switching).
b) Recharging after a switching operation to a
charge of 80 V:
Max. supply voltage:
Power pack A: < 2.5 s
Power pack B: < 2.5 s
Min. supply voltage:
Power pack A: < 3 sPower pack B: < 3 s.
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a) Breakers of type VM1:
12 kV, 630 A, 25 kA
12/17,5 kV, 1250 A, 25 kA 17,5 kV, 630 A, 20 kA
Breaking current la (kA)
0,05
5
0 ,1 0 ,2 0 ,3 0, 4 0 ,5 0 ,6 0, 8 1
678
10
2
3
4
5
678
102
2
3
4
5
678
103
2
3
4
5
678
4
2
3
45
678
105
2 3 4 5 6 7 8 1 09 20 30 40 50
10
Numberofoperatingcyclesn
Rated current:
1250 A
630 A
Breaking current la (kA)
0,05
5
0 ,1 0 ,2 0 ,3 0, 4 0 ,5 0 ,6 0 ,8 1
678
10
2
3
4
5
678
102
2
3
4
5
678
103
2
3
4
5
678
4
2
3
45
678
105
2 3 4 5 6 7 8 1 09 20 30 40 50
10
Numberofoperatingcyclesn
Rated current:
1250 A
630 A
Figure 2/3 B: Permissible number of vacuum interrupteroperating cycles n as a function of the breaking current Ia.
b) Breakers of type VM1, 12/17.5 kV, 630/1250 A, 31.5 kA
0,05
5
0, 1 0, 2 0 ,3 0, 4 0, 5 0 ,6 0 ,8 1
678
10
2
3
4
5
678
102
2
3
4
5
678
103
2
3
4
5
678
4
2
3
4
5
678
105
2 3 4 5 6 7 8 1 09 20 30 40 50
10
Breaking current la (kA)
Numberof
operatingcyclesn
Ratedcurrent:
630 A
1,5
a) Breakers of type VM1
12 kV, 630 A, 20 kA
17,5 kV, 630 A, 16 kA
Figure 2/3 A: Permissible number of vacuum interrupter operating cycles as a function of the breaking cuurent Ia.
0,05
5
0, 1 0, 2 0 ,3 0, 4 0, 5 0 ,6 0, 8 1
678
10
2
3
4
5
678
102
2
3
4
5
678
103
2
3
4
5
678
4
2
3
4
5
678
105
2 3 4 5 6 7 8 1 09 20 30 40 50
10
Breaking current la (kA)
Numberof
operatingcyclesn
Ratedcurrent:
630 A
1,5
b) Breakers of type VM1, 24 kV, 630 A, 16 kA
Permissible number of vacuum interrupter operating cycles
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Breaking current la (kA)
0,05
5
0,1 0,2 0,3 0,4 0,5 0,6 0,8 1
678
10
2
3
4
5
678
102
2
3
4
5
678
103
2
3
4
5
678
4
2
3
4
5
678
105
2 3 4 5 6 7 8 109 20 30 40 50
10
Numberofo
peratingcyclesn
Rated current:
1250 A
630 A
Figure 2/4: Vacuum circuit-breaker, type VM1, high-current for 12 kVand rated current 1600...2000 A, mechanism side.
Figure 2/5: Vacuum circuit-breaker, type VM1, high-current for 12 kVand rated current1600...2000 A, pole side.
c) Breakers of type VM1, 24 kV:
24 kV, 630 A, 20/25 kA
24 kV, 1250 A; 25 kA
Figure 2/3 B: Permissible number of vacuum interrupteroperating cycles n as a function of the breaking current Ia.
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Breaking current la (kA)
2500 A
1600 A
0,05
5
0,1 0,2 0,3 0,4 0,5 0,6 0,8 1
678
10
2
3
4
5
678
102
2
3
4
5
678
103
2
3
4
5
678
4
2
3
4
5
678
105
2 3 4 5 6 7 8 109 20 30 40 50
10
Numberofop
eratingcyclesn
Rated current:
2000 A
1600 A
2500 A
Breaking current la (kA)
0,05
5
0,1 0,2 0,3 0,4 0,5 0,6 0,8 1
678
10
2
3
4
5
678
102
2
3
4
5
678
103
2
3
4
5
678
4
2
3
4
5
678
105
2 3 4 5 6 7 8 109 20 30 40 50
10
Numberofop
eratingcyclesn
Rated current:
2000 A
1600 A
2500 A
Breaking current la (kA)
1600 A
0,05
5
0 ,1 0 ,2 0, 3 0 ,4 0 ,5 0 ,6 0 ,8 1
678
10
2
3
4
5
678
102
2
3
4
5
678
103
2
3
4
5
678
4
2
3
45
678
105
2 3 4 5 6 7 8 109 20 30 40 50
10
Numberofoperatingcyclesn
Rated current:
2000 A
2500 A
1250 A
Figure 2/6: Permissible number of vacuum interrupteroperating cycles n as a function of the breaking current Ia.
Breaking current la (kA)
2500 A
1600 A
0,05
5
0 ,1 0 ,2 0 ,3 0, 4 0 ,5 0 ,6 0 ,8 1
678
10
2
3
4
5
678
102
2
3
4
5
678
103
2
3
4
5
678
4
2
3
45
678
105
2 3 4 5 6 7 8 109 20 30 40 50
10
Numberofoperatingcyclesn
Rated current:
2000 A1600 A
2500 A
b) Breakers of type VM1, high-current, 12/17.5 kV, 1600 A, 31.5 kAa) Breakers of type VM1, high-current, 12/17.5 kV, 1600 A, 25 kA
c) Breakers of type VM1, high-current, 12 kV, 1250 A, 40 kA d) Breakers of type VM1, high-current, 24 kV, 1600 A, 25 kA
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Rated Rated Rated short-
voltage current circuit
breaking
current
kV A kA p a a1
c d f
12 630/ ... 31.5 150 450 395 400 450 160
1250 210 570 515 520 570 220
17.5 630/ ... 31.5 150 450 395 400 450 1601250 210 570 515 520 570 220
Figure 2/7: Dimensional drawing of circuit-breaker type VM1,
12 kV, 630 A and 1250 A, ... 31.5 kA
17.5 kV, 630 A and 1250 A, ... 31.5 kA.
Rated Rated Rated short-
voltage current circuit
breaking
current
kV A kA p a a1
c d f
24 630/ ... 25 210 570 515 520 570 220
1250 275 750 695 700 750 205
Figure 2/8: Dimensional drawing of circuit-breaker type VM1,
24 kV, 630 A and 1250 A, ... 25 kA.
K = Cable entry
T = Handling bores, both sides
A = View "A"
GA = Tested terminal zone
M = Minimum distance to DIN VDE 0101
A1 = Terminal for 630 A
A2 = Terminal for 1250 A
A4 = Terminal bar to DIN 46 433,
for 17.5 kV shrink sleeve fitted
= Earthing conductor terminal, use contact washer
K = Cable entryT = Handling bore, both sides
A = View "A"
GA = Tested terminal zone
M = Minimum distance to DIN VDE 0101
A1 = Terminal for 630 A
A2 = Terminal for 1250 A
A4 = Terminal bar to DIN 46 433,
for 24 kV shrink sleeve fitted
= Earthing conductor terminal, use contact washer
461
25 345
409
a1
a
35
c
433
M12
d
p p 95
205
217,
5
77
,5
M
M12
424
4444
24
60
368
48030
100
550
474,
5
KT
30
A""
40(50)
M M
200
200
M M
M12
24
A4
GA
f
AA1M12Insertion depth18 +2
A2M10Insertion depth15 +1
45
22
22
f
631
345
409
a1
a
c
433
M12
d
p p 95
310
282,
5
77,
5
M
M12
424
4444
24
60
368
48030
100
550
474,5
KT
30
40(50)
A
M M
200
200
M M
M12
24
A4
45
22
22
25
35
A""
GA
A1M12Insertiondepth 18+2
A2M10
Insertiondepth 15+1
A1
M12
Insertiondepth 18+2
A2
M10
Insertion
depth 15+1
2.5 Dimensions
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Rated Rated Rated
voltage current short-
circuit
breaking
current
kV A kA p a a1
c d f
24 ... 25001) ... 25 275 750 695 700 750 545
Rated Rated Rated
voltage current short-
circuit-
breaking
current
kV A kA p a a1
c d f g h
12 ... 2500 1) ... 40 210 610 555 560 600 405 320 20
275 750 695 700 750 545 345 25
17.5 ... 2500 1) ... 31.5 210 610 555 560 600 405 320 20
275 750 695 700 750 545 345 25
H = Emergency manual opening lever
K = Cable entry
T = Handling bores, both sides
A = View A
GA = Tested terminal zoneM = Minimum distance to DIN VDE 0101
A1 = Terminal for contact arm
A2 = Terminal for connecting bar
A4 = Terminal bar to DIN 46 433,
for 17.5 kV shrink sleeve fitted
= Earthing conductor terminal, use contact washer
Figure 2/9: Dimensional drawing of circuit-breaker type VM1,high-current.
12 kV, 2500 A , ... 40 kA
17.5 kV, 2500 A , ... 31.5 kA.
Figure 2/10: Dimensional drawing of circuit-breaker type VM1,high-current, 24 kV, ...2500 A, ... 25 kA.
H = Emergency manual opening lever
K = Cable entry
T = Handling bores, both sides
A = View A
GA = Tested terminal zone
M = Minimum distance to DIN VDE 0101
A1 = Terminal for contact arm
A2 = Terminal for connecting bar
A4 = Terminal bar to DIN 46 433,for 24 kV shrink sleeve fitted
= Earthing conductor terminal, use contact washer
616
599
h
424
200
M12
M M
f
24
M M
2
00
A4
80
A1
M10
15
12
12
20 2020
20
a1
a
35
c
433
M12
d
p p 95
310
237,5
77,5
M
M12
428
530
67030
100
550
400
3564
75
KT H
GA
A2M12
18
A""
+1
+2
1)
616
599
h
200
M12
M M
f
24
M M
2
00
A4
80
A1
M10
15
12
12
20 2020
20
a1
a
35
c
433
M12
d
p p 95
310
237,5
77,5
M12
530
67030
100
550
400
3564
75
KT H
GA
A2M12
18
A""
+1
+2
1)
e
200
M12
M M
24
A1
M10Insertion depth15
12
12
20 2020
20
24
A2M12Insertion depth18
+1
+2
385
200
M12
M M
24
12
A
12
20 2020
20
44
50
+1
+2
1)
661
642
424
M M
A4
KT H
200
M12 f
24
M M
200
80
A1M10Insertion depth15
1
2
A
12
20 2020
20
a1
a
35
c
433
25
M12
d
p p 95
310
282,5
77,5
M
M12
345
428
44
24
50
530
67030
100
550
400
3564
75
GA
A2M12Insertion depth18
A""
+1
+2
1)1)
1)
385
1)Breakers with rated currents 2500 A are fitted with a heat sink.
1)
Breakers with rated currents 2500 A are fitted with a heat sink.
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3 Structure and function
3.1 Structure of the breaker poles
(Figures 2/2, 2/5 and 3/2)
The poles in column design are mounted on the
bracket-shaped rear part of mechanism enclosure 1.
The live parts of the breaker poles are enclosed in
cast resin and protected from impacts and other
external influences.With the breaker closed, the current path leads
from the upper breaker terminal 25 to the fixed
contact 24.2 in the vacuum interrupter 24, then via
the moving contact 24.1 and the flexible connector
21 to the lower breaker terminal 22.
The switching motions are effected by means of
the insulated link rod 19 with internal contact force
springs 20.
3.2 Structure of the operating mechanism
(Figures 3/1 to 3/4)
The operating mechanism is of the magnetic type.
It fundamentally consists of the magnetic actuator
10, the control module 27 with sensor systems, the
storage capacitor(s) 26 and the linkages which
transmit the force to the breaker poles.
In addition, there are supplementary components
for emergency manual opening and the controls
located on the front of the enclosure.
The actuator 10 acts on the three breaker poles via
lever shaft 18. The storage capacitor 26 provides
the necessary actuating energy on demand.
The mechanical switch positions of the circuit-breaker are detected by two sensors 15 and 16
directly at lever shaft 18.
There are rating plates with the main data of the
switching device on front plate 1.1, and at the left
side in the mechanism enclosure.
The basic version of the magnetic actuator
mechanism is fitted with the following controls and
instruments:
ON push-button 3
OFF push-button 4
Emergency manual OFF 8
Mechanical position indicator 6
Mechanical operating cycle counter 5
Signal lamp for switching readiness 2 (READY
LED).
The following may also be installed:
Two/five-pole auxiliary switch for switch position
signal: -S3 and -S5.
3.2.1 Structure of the control module
(Figures 3/5 to 3/7)
The control module consists of 2 circuit boards:
1. AC/DC converter (upper board)
The AC/DC converter produces a voltage of
80 V from any supply voltage within the
input voltage range, with which the storage
capacitor(s) is/are charged. This is also used to
generate a voltage of 12 V to supply the breaker
controller.
The power supply sockets are located on this
board.
2. Breaker controller (lower board)
This consists of:
the logic module,
electronic optocouplers for input,
photo-MOS relays for output,
power electronics to control the actuator
coils,
sockets for control and signals.
The plug connector technology ensures safe
and trouble-free wiring.
3.2.2 Storage capacitor
(Figures 3/3 and 3/5)
The energy for operation of the circuit-breaker is
stored electrically in a capacitor. Circuit-breakers
for breaking currents of 31.5 kA and above are
fitted with two capacitors. The capacitors are rated
to provide the energy for an OFF-ON-OFF
operating cycle without recharging.
The energy stored by the capacitor is permanently
monitored. This is achieved by measuring the
capacitor voltage.
The "Ready" lamp indicates that supply voltage isapplied and the circuit-breaker is ready for the
impending switching operation (see also section
6.2).
The criterion for the "Ready" lamp to light up is the
energy in the storage capacitor(s) at the particular
time; otherwise and error signal is issued:
Case 1: Breaker in the OFF position.
The energy available is sufficient for an ON and
an OFF switching operation.
Case 2: Breaker in the ON position.
The energy available is sufficient for an OFF
switching operation.
The energy available is sufficient for an OFF
switching operation in the first 200 s after
failure of the supply power supply (see also
section 6.3).
3.2.3 Sensor system
(Figures 3/4 and 3/5)
The systematic use of sensors permits control of
the circuit-breaker without auxiliary switches.Two inductive proximity switches 15 and 16 are
used to detect the mechanical limit positions,
which also provide for self-monitoring of the
system.
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Figure 3/1: Circuit-breaker front with controls and annunciations.
1 Mechanism enclosure1.1 Front plate
1.2 Bore for handling, both sides
2 Ready indicator
3 ON push-button
4 OFF push-button
5 Mechanical operating cycle counter
6 Mechanical position indicator
7 Rating plate
8 Socket for emergency manual operation lever
Figure 3/2: Sectional view of a vacuum circuit-breaker type VM1,
schematic diagram.
1 Mechanism enclosure
1.1 Front plate, removable
9 Emergency manual opening mechanism
10 Magnetic actuator
11 OFF coil
12 Magnet armature
13 Permanent magnets
14 ON coil
15 Sensor -B0A for circuit-breaker OFF signal
16 Sensor -B0E for circuit-breaker ON signal
17 Travel adjuster
18 Lever shaft
19 Insulated link rod
20 Contact force spring
21 Flexible connector
22 Lower breaker terminal
23 Cast insulation
24 Vacuum interrupter
24.1 Moving contact
24.2 Fixed contact
25 Upper breaker terminal
7
6
5
1
1.1
1.2
2
3
4
8
22
21
20
19
17
16
14
12
11
9
1
25
24
23
13
1.1
10
15
18
24.1
24.2
Figure 3/3: View of the magnetic actuator mechanism with auxiliary
systems, high-current breaker, front plate removed.
5 Mechanical operating cycle counter6 Mechanical posit ion indicator
8 Socket for emergency manual operating lever
10 Actuator
26 Storage capacitor
27 Circuit-breaker control unit
6
15
16
Figure 3/4: Position indicator.
6 Mechanical position indicator
15 Sensor -B0A for circuit-breaker OFF signal16 Sensor -B0E for circuit-breaker ON signal
27
26
26
8
10
6
5
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3.2.4 Ready lamp
When the ready lamp lights up, it indicates that
the VM1 breaker is supplied with auxiliary power
(see also section 6.2),
the voltage at the storage capacitor is sufficient
for the next switching operation (see section
3.2.2),
the position sensors have detected a clear ON orOFF position (see also section 3.3.2), and
that the logic module is functioning correctly
(watchdog).
The ready lamp does not monitor the status of the
"closing lock-out" and "OFF U
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3.3.3 Opening and closing procedure
(Figures 3/1 to 3/3)
The opening and closing processes can be remote
controlled by applying a voltage to input Y3 (ON)
and Y2 (OFF) (see also sections 2.2a and 6.2). The
breaker can be operated locally by pressing push
buttons 3 and 4.
In the closing process, the armature motion acts
direct via lever shaft 18 on the moving contact 24.3until the contacts meet.
In the further motion sequence, the pretensioned
spring arrangement 20 is tensioned to 100% and
the necessary contact force thus applied. The
available overtravel is greater than the maximum
contact burn-off throughout the life of the vacuum
interrupter.
3.3.4 Autoreclosing sequence
The operating mechanism is fundamentally
prepared for autoreclosing, and with the short
recharging time of the storage capacitor (max. 3 s)
it is also suitable for multi-shot autoreclosing.
3.3.5 Quenching principle of the vacuum interrupter
Due to the extremely low static interrupter chamber
pressure of 10-4to 10-8mbar, only a relatively small
contact gap is required to achieve a high dielectric
strength. The vacuum arc is extinguished on one of
the first natural current zeros.
Due to the small contact gap and the high
conductivity of the metal vapour plasma, the arc
drop voltage, and additionally, due to the shortarcing time, the associated arc energy, are
extremely low, which has advantageous effects on
the life of the contacts and thus on that of the
vacuum interrupters.
3.3.6 10-pole plug-in terminal strip
A 10-pole terminal strip X1 at the top right of
the VM1 enclosure facilitates secondary side
connection of the circuit-breaker inputs.
The connection points are designed to be
suitable for screws.
Inputs Y4 and Y1 are connected to 80 V DC
via plug -X2 (closed circuit current inputs, see
also section 3.3.2).If these functions are to be used, the wiring on
these inputs is to be removed, including the
corresponding half of plug -X2.
Power supply:
Terminal strip Q0, terminals 47 and 50,
accessible via the fitted plug with screw
connections. The polarity is irrelevant.
Outputs S7/S11/S12/S41/S42:
Terminal strip Q0, terminals 1 to 14, accessible
via the fitted plug with screw connections.
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External circuit-breaker connection:
Inputs:
Y3 ON switching command (open circuit)
Y2 OFF switching command 1 (open circuit)
Y4 OFF switching command (closed circuit)
Y1 Closing lock-out (closed circuit)
Y9 OFF switching command 2 (open circuit)
G0 Voltage supply
Outputs:
S41 OFF signal (NOC)
S42 ON signal (NOC)
S7 Fleeting contact (time: 40 ms)
S11 Ready for operation (NOC)
S12 Failure message (NCC)
Figure 3/5: Block diagram of the magnetic actuator mechanism.
2 Ready indicator (LED)
3 ON push-button
4 OFF push-button
10 Actuator
15 Sensor for circuit-breaker OFF signal
16 Sensor for circuit-breaker ON signal
26 Storage capacitor
27 Circuit-breaker control unit
30 Converter for operation with AC or DC voltage
Q0 Circuit-breaker
/ A: 24 V...48 V AC/DC; 60 V DC
LOGIC
3
4
27
2
-Q0 15 10
16
26
30
-Y2
-Y1
-Y4
-Y9
-S42
-S7
-S11
-S12
-S41
-Y3
B: 110 V...240 V AC/DC=
= -G0
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Figure 3/7: Connection diagram for circuit-breaker.
I Circuit-breaker control unit ( lower board)I I AC/DC converter (upper board)
-Q0 Circuit-breaker
-X1 Terminal str ip
-X2 Plug (see the notes for auxiliary power
supply of shunt release -Y4 and -Y1 in
section 3.3.2 and 3.3.6)
Inputs:
Y3 ON switching command (open circuit)
Y2 OFF switching command 1 (open circuit)
Y4 OFF switching command (closed circuit)
Y1 Closing lock-out (closed circuit)
Y9 OFF switching command 2 (open circuit)
G0 Voltage supply
Outputs:
S41 OFF signal (NOC)
S42 ON signal (NOC)
S7 Fleeting contact
(time: 40 ms)
S11 Ready for operation (NOC)
S12 Failure message (NCC)
AC/DC converter (30)
(upper board)
Circuit-breaker control unit (27)(lower board)
Outputs: S41
S42S7
S11
S12
Connection for ON button (3)
OFF button (4) Signal lamp (2)
Input G0 for voltage supply
Connection for
actuator on and
off coils (10)
Connection
for storage
capacitor (26)
Figure 3/6: Circuit-breaker
control unit with
AC/DC converter.
Inputs for ON/OFF
position signal(sensors)
Inputs: Y3
Y2
Y4
Y1Y9
Fleeting contact
OFF command 2
OFF command 2
10
-Q0
OFFcoil
11
2
34
5
67
8
9
1011
12
1314
2
345
6
78
9
1011
12
1314
OFF signal
READY
-S41
-S42
-S7
-S11
-S12NOT READY
= failure
ON
OFF
READY
4748
49
50
47
4849
50
-Q0
ON
coil
+80V
+80V
46
45
44
43
46
45
44
43
0V
0V
+80V
+80V
42
41
40
39
42
41
40
39
+80V
0V
0V
+12V
51
52
53
54
5
1
5
2
5
3
5
4
+80V
+12V
38
37
36
35
38
37
36
35
-Q0
-Q01516
17
1819
20
2122
23
2425
2627
28
-Q029
30
3132
33
34
29
30
3132
33
34
-Y31516
17
1819
20
2122
23
2425
2627
28
+OFF
+ON
+12V+12V
0V
0V
ON signal
ON command
ON command
OFF command 1
OFF command 1
ON block
ON block
OFF U