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APPARATUS An isolated-phase bus duct TYPE IPB SERIAL No. FM991-SYD-0/A/B/C

REPORT OF PERFORMANCE TIC 2568-11

27 kV – 160 kA – 24000 A – 50 Hz (60 Hz)

CLIENT JIANGSU DAQO ENCLOSED BUSBAR SYSTEMS CO., LTD Yangzhong City, Jiangsu Province, China

MANUFACTURER JIANGSU DAQO ENCLOSED BUSBAR SYSTEMS CO., LTD Yangzhong City, Jiangsu Province, China

TESTED BY KEMA HIGH-POWER LABORATORY Podnikatelská 547, 190 11 Praha 9, Bĕchovice, Czech Republic

DATE(S) OF TESTS 20 May 2011

TEST SPECIFICATION

The tests have been carried out in accordance with the client's instructions. Test procedure and test parameters were based on IEEE Std C37.23 (2003) and IEC 62271-1 (2007).

This report applies only to the apparatus tested. The responsibility for conformity of any apparatus having the same designations with that tested rests with the Manufacturer. This report consists of 20 sheets in total. © Copyright: Only integral reproduction of this report is permitted without written permission from KEMA. Electronic copies in e.g. PDF-format or scanned version of this report may be available and have the status “for information only”. The sealed and bound version of the report is the only valid version.

KEMA Nederland B.V.

S.A.M. Verhoeven Director Testing, Inspections & Certification The Netherlands

Arnhem, 2 September 2011

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1 Certificate A Certificate contains a record of a series of type tests carried out strictly in accordance with a recognized standard. The equipment tested has fulfilled the requirements of this standard and the relevant ratings assigned by the manufacturer are endorsed by KEMA. The Certificate is applicable only to the equipment tested. KEMA is responsible for the validity and the contents of the Certificate. The responsibility for conformity of any apparatus having the same designation as the one tested rests with the manufacturer. The Certificate contains the essential drawings and a description of the equipment tested. Detailed rules are given in KEMA's Certification procedure.

2 Report of Performance A Report of Performance contains a record of one or more tests which have been carried out according to the client's instructions. These tests are not necessarily in accordance with a recognized standard. The test results do not verify ratings of the test object.

KEMA issues three types of Reports of Performance:

2.1 The tests have been carried out strictly in accordance with …. The apparatus has complied with the relevant requirements.

This sentence will appear on the front page of a Report of Performance if the tests have been performed in accordance with a recognized standard, but the series of tests does not completely fulfil the requirements for a Certificate of Compliance (for example, if the number of test duties is not a complete series of type tests). The Report contains verified drawings and a description of the equipment tested. Detailed rules are given in KEMA's Certification procedure. The condition of the test object after the tests is assessed and recorded in the Report.

2.2 The tests have been carried out in accordance with the client's instructions. Test procedure and test parameters were based on ....

This sentence will appear on the front page of a Report of Performance if the number of tests, the test procedure and the test parameters are based on a recognized standard and related to the ratings assigned by the manufacturer. If the apparatus does not pass the tests such behaviour will be mentioned on the front sheet. Verification of the drawings (if submitted) and assessment of the condition after the tests is only done on the client's request.

2.3 The tests have been carried out according to the client's instructions.

This sentence will appear on the front page of a Report of Performance if the tests, test procedure and/or test parameters are not in accordance with a recognized standard.

3 Standards When reference is made to a standard, and the date of issue is not stated, this applies to the latest issue, including amendments which have been officially published prior to the date of the tests.

4 Official and uncontrolled test documents The official test documents of KEMA High-Power Laboratory are issued in bound form. Uncontrolled copies may be provided as loose sheets or as a digital file for convenience of reproduction by the client. The copyright has to be respected at all times.

5 Accuracy of measurement In the table of test results the measured quantities are given in three digits. This method of presentation does not indicate an accuracy. The guaranteed uncertainty in the figures mentioned, taking into account the total measuring system, is less than 5%, unless mentioned otherwise.

TIC 2568-11 INFORMATION SHEET

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REPORT

Customer : JIANGSU DAQO ENCLOSED BUSBAR SYSTEMS CO., LTD : Mingzhu Square, Development Zone of Yangzhong City : Jiangsu Province, P.R. China Manufacturer : JIANGSU DAQO ENCLOSED BUSBAR SYSTEMS CO., LTD : Mingzhu Square, Development Zone of Yangzhong City : Jiangsu Province, P.R. China Date and place of tests : 20. 05. 2011, HPL Prague, Czech Republic Test object : Isolated-phase bus duct Type : IPB (drw. No. FM991-SYD-002)

REQUIREMENTS

Requirements as per: ANSI / IEEE C37.23:2003 cl. 6.2.3, cl. 6.2.4 and IEC 62271-1:2007 cl. 6.6

TEST PROGRAMME

1) Short-time withstand current and peak withstand current test TEST ENGINEER ZKU

Tested by Martin Vaniš PROJECT NUMBERS

Report of performance TIC 2568-11 and Test Report No. 11 - 093 SUMMARY AND CONCLUSION

The tests were based on the requirements of the standard as mentioned above under requirements.

KEMA Nederland B.V. ………………………. Robert Jech Head of HPL Zkratovna, Prague 9, Czech Republic Prague: 20. 05. 2011

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Zkušebnictví, a. s.Zkušebnictví, a. s.Zkušebnictví, a. s.Zkušebnictví, a. s.

Podnikatelská 547, 190 11 Praha 9, Běchovice, Czech Republic

T E S T R E P O R T No. 11111111 ---- 000093939393

Test object : Isolated-phase bus duct

Type : IPB (drw. No. FM991-SYD-002) Serial No. : FM991-SYD-0/A/B/C

Ratings

Rated voltage : 27 kV Rated current : 24 000 A Rated frequency : 50 Hz (60 Hz)

Manufacturer : JIANGSU DAQO ENCLOSED BUSBAR SYSTEMS CO., LTD Mingzhu Square, Development Zone of Yangzhong City Jiangsu Province, P.R. China Test performed : Short-time withstand current and peak withstand current test Customer : JIANGSU DAQO ENCLOSED BUSBAR SYSTEMS CO., LTD Mingzhu Square, Development Zone of Yangzhong City Jiangsu Province, P.R. China Date of test : 20. 05. 2011

THIS TEST REPORT IS CONFIDENTIAL AND SHALL NOT BE PASSED OVER OR TRANSFERRED TO ANY THIRD PARTY WITHOUT WRITTEN APPROVAL OF THE CUSTOMER.

WITHOUT THE WRITTEN APPROVAL OF THE TESTING LABORATORY ZKRATOVNA SHALL NOT BE REPRODUCED EXCEPT IN FULL. Copy No.: E Praha 9, Běchovice Tested by: Martin Vaniš Robert Jech Head of the Laboratory

Test Report No. : 11 - 093 Zkušebnictví, a.s.Zkušebnictví, a.s.Zkušebnictví, a.s.Zkušebnictví, a.s. Sheet : 3/16

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Description of the test object

An isolated-phase bus duct composed of three metal-enclosed conductors made from Al. The metal enclosures are conductively connected by flexible Al conductors between the phases at the beginning and at the end. The isolated-phase bus duct is terminated with “E” isolated-phase bus duct.

The test object was identified according to the drawing No. FM991-SYD-002. Ratings assigned by the manufacturer Type : IPB (drw. No. FM991-SYD-002) Serial No. : FM991-SYD-0/A/B/C Manufacturer : JIANGSU DAQO ENCLOSED BUSBAR SYSTEMS CO., LTD, P.R. China Year of manufacture : 2011 Rated voltage : 27 kV Rated current : 24 000 A Rated frequency : 50 Hz (60 Hz) Short-time withstand current : 160 kA Peak withstand current : 450 kA Duration of short-circuit : 2 s

Dimension of conductor : ∅900 x 15 mm Dimension of enclosure : ∅1450 x 12 mm Axial distance between phases : 2050 mm

Dimension of test object (high x width x length) : 1970 mm x 5550 mm x 8675 mm

Support insulator Type : Drw. No. NHTY-01 Manufacturer : --- Test specification

The tests were carried out according to the customer’s instructions. The test procedures, parameters and test assessment criteria are based on ANSI / IEEE C37.23:2003 cl. 6.2.3, cl. 6.2.4 and IEC 62271-1:2007 cl. 6.6. Test parameters Short-time withstand current : 160 kA Peak withstand current : 450 kA Duration of short-circuit : 2 s Summary The test was carried out as required by the test specification. The tested isolated-phase bus duct withstood the short-time withstand current and peak withstand current tests for the test parameters mentioned above. More details of the tests performed are given in the enclosed tables and oscillograms.


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Test conditions Working frequency f = 48,5 Hz ÷ 49,5 Hz

The short-time withstand current and peak withstand current test on an isolated-phase bus duct was carried out in a three-phase test circuit with a value of the supply no-load voltage of ca 600 V. The test was carried out as the separate tests firstly with the peak withstand current and afterwards with the short-time withstand current.

The input terminals of the test object were connected to the test circuit by means of two flexible Cu conductors in each phase. The test object was short-circuited at the end by means of “E” isolated-phase bus duct. The short-circuit point was earthed.

The temperature of the input terminals (phase L2) of the isolated-phase bus duct and temperature of the flexible Al conductors were measured by a digital thermometer immediately after the test.

The configuration of the test object is documented by the photograph in Fig. 1 and in the drawing No. FM991-SYD-002. The other photographs document the test object after the tests.

The test circuit, including measurement points, is illustrated in the diagram ROV320.

The tests were witnessed by

Sun Bing, JIANGSU DAQO ENCLOSED BUSBAR SYSTEMS CO., LTD, P.R. China Miroslav Paumer, Moody International, Czech Republic

Notice: The test results relate only to the tests given in this Test Report. No documents of administrative, business or other character can be substituted by this Test Report.


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List of symbols a) Used in the table of test results

Im - peak withstand current I1 - short-time withstand current at the beginning of the test (t ≅ 0,05 s) I2 - short-time withstand current at the end of the test (t ≅ 0,9 ti) Ie - equivalent r.m.s. value of short-time withstand current Ith - specified short-time withstand current for specified duration of short-circuit tth - specified duration of short-circuit ti - duration of short-circuit

T1 - temperature of the input terminals (phase L2) T2 - temperature of the flexible Al conductors

b) Used in the oscillograms

IR, IS, IT - current course, phases R, S, T UR, US, UT - voltage course, phase voltage on the supply side t - time

The Test Report contains: 16 sheets i.e.: 1 introductory sheet 1 title sheet 3 text sheets 3 table sheets 1 test circuit diagram 1 drawing 6 photograph sheets

2 oscillograms


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Table of test results: Short-time withstand current and peak withstand current test Test circuit diagram: ROV320 File denomination: zavo20ex

Condition before test: New test object

Test No.

Im (kA)

I1 (kA)

I2 (kA)

Ie (kA)

ti (ms)

Ie2.ti/Ith2.tth( - ) Observation

005 464 417 326

180 207 174

184 212 177

--- 330 --- Peak withstand current 450 kA

peak in phase R (L1) no effect, no fault

006 235 250 210

161 174 157

160 174 155

162 175 156

2030 1,04 1,21 0,95

Short-time withstand current 160 kA / 2 s

no effect, no fault Maximal reached temperatures:

T1 = 27°C, T2 = 26°C

Condition after the test: No visible damage, no deformation, no damage of the insulators

Meteorological conditions

Test No.

Date (dd.mm.yy)

Time (hh:mm)

Temperature (oC)

Relative humidity (%)

Atmospheric pressure (hPa)

005 20.5.2011 10:33 20,3 59 986

006 20.5.2011 11:14 21,9 51 986


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Test circuit parameters

File denomination zavo20ex

Test No. 005, 006

Test circuit diagram ROV320

Generator S // J

Rated (phase to phase) voltage (kV) 8

Phases connected R, S, T

Inductance per phase (mH) 0,072

Inductance of reactors per phase (mH) ---

Resistance of resistors per phase (Ω) ---

Supply transformer – Type ELIN

Connection D/d(p)

Transf. ratio 11,77

Inductance per phase (mH) 0,599

Total inductance per phase of supply circuit (mH) 0,671

Capacity in parallel (µF) ---

Resistance in series (Ω) ---

Neutral point of supply circuit insulated

Short-circuit point earthed

Load transformer – Type ---

Connection ---

Transf. ratio ---

Resistance of load resistors (Ω) ---

Inductance of load reactors (mH) ---

Capacity of load capacitors (µF) ---

Neutral point of load circuit ---

Power factor / impedance of supply circuit ( - / %) ---

Power factor / impedance of load circuit ( - / %) ---

Power factor of test circuit ( - ) < 0,1


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Measuring devices used Test circuit diagram: ROV320 File denomination: zavo20ex.005, 006

Measurand Measuring sensor / device Digital measuring system,

type DMS

Type Serial No. Transfer constant Input channel, serial No.

IR Rogowski coil

Integrative amplifier

DI-01 124-083 750 kA / 10 V 100-10100-5

IS Rogowski coil


DI-02 124-083 750 kA / 10 V 100-10100-12

IT Rogowski coil


DI-03 124-083 750 kA / 10 V 100-10100-13

UR Resistance voltage divider DR 001/88 3 kV / 150 V 100-10100-3

US Resistance voltage divider DR 002/88 3 kV / 150 V 100-10100-16

UT Resistance voltage divider DR 003/88 3 kV / 150 V 100-10100-28

Temperature measurement

Digital thermometer, type THERM 2211-1, serial No. 66322, manufactured by AHLBORN Meteorological conditions measurement Meteorological station, type Vantage Pro 2, serial No. 3788A-6312


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Drawing No. FM991-SYD-002


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Fig. 1 Test object before the test


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Fig. 2 Connection of the test object to the test circuit - detailed view of the input busbars


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Fig. 3 Test object after the test


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Fig. 4 Test object after the test - detailed view of the short-circuit point


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Fig. 5 Test object after the test - detailed view of internal insulator


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Fig. 6 Test object after the test - detailed view of internal insulator

Test Report No. : 11 - 093 Zkušebnictví, a.s.Zkušebnictví, a.s.Zkušebnictví, a.s.Zkušebnictví, a.s. Oscillogram sheet : 1/2

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Peak withstand current test - 464 kA

Test Report No. : 11 - 093 Zkušebnictví, a.s.Zkušebnictví, a.s.Zkušebnictví, a.s.Zkušebnictví, a.s. Oscillogram sheet : 2/2

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Short-time withstand current test – 164 kA / 2,03 s

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