TIC 1043-11

TYPE TEST CERTIFICATE OF DIELECTRIC AND TEMPERATURE RISE PERFORMANCE

OBJECT A three phase isolated phase bus

TYPE QLFM SERIAL No. EX 00991

Rated voltage 27 kV Rated frequency 60 Hz

Rated current 24 kA

MANUFACTURER Jiangsu Daqo Enclosed Busbar Systems Co., Ltd. Jiangsu, China

CLIENT Jiangsu Daqo Enclosed Busbar Systems Co., Ltd. Jiangsu, China

TESTED BY KEMA HIGH-VOLTAGE LABORATORY Arnhem, the Netherlands

DATE OF TESTS 29 June 2011 until 4 July 2011

The object, constructed in accordance with the description, drawings and photographs incorporated in this Certificate, has been subjected to the series of proving tests in accordance with

IEEE C37.23, clauses 6.2.1 and 6.2.2

This Type Test Certificate has been issued by KEMA following exclusively the STL Guides. The results are shown in the record of Proving Tests and the oscillograms attached hereto. The values obtained and the general performance are considered to comply with the above Standard and to justify the ratings assigned by the manufacturer as listed on page 3.

The Certificate applies only to the object tested. The responsibility for conformity of any object having the same designations with that tested rests with the Manufacturer. This Certificate consists of 30 pages in total. Copyright: Only integral reproduction of this Certificate is permitted without written

permission from KEMA. Electronic copies in e.g. PDF-format or scanned version of this Certificate may be available and have the status for information only.

The sealed and bound version of the Certificate is the only valid version.

KEMA Nederland B.V.

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

Arnhem, 5 September 2011

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TABLE OF CONTENTS

TABLE OF CONTENTS .......................................................................................................................... 2

1 Identification of the test object......................................................................................................3 1.1 Ratings assigned by the manufacturer ........................................................................................3 1.2 Description of the test object........................................................................................................3 1.3 List of drawings ............................................................................................................................4

2 General information......................................................................................................................5 2.1 The tests were witnessed by........................................................................................................5 2.2 The tests were carried out by.......................................................................................................5 2.3 Purpose of the test .......................................................................................................................5 2.4 Measurement uncertainty.............................................................................................................5 2.5 Applicable standards....................................................................................................................5

3 Dielectric tests ..............................................................................................................................6 3.1 Power frequency withstand voltage .............................................................................................6 3.2 Lightning impulse withstand voltage tests....................................................................................7

4 Continuous current test ..............................................................................................................11

APPENDIX A MEASUREMENT UNCERTAINTIES......................................................................... 17

APPENDIX B MANUFACTURERS DRAWING(S)/DATA SHEET .................................................. 19

APPENDIX C PHOTOGRAPHS OF THE TEST OBJECT............................................................... 29

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1 IDENTIFICATION OF THE TEST OBJECT 1.1 Ratings assigned by the manufacturer Rated maximum voltage 27 kV Rated power frequency 60 Hz Rated insulation levels (AC / LI) 60 / 125 kV Rated continuous current 24000 A 1.2 Description of the test object Manufacturer Jiangsu Daqo Enclosed Busbar Systems Co., Ltd. Type QLFM Year of manufacture 2011 Number of phases 3 Material of conductor Aluminium Al 99,6 Material of enclosure Aluminium Al 99,6 Diameter of main circuit bus 900 mm Thickness of main circuit 15 mm Diameter of main circuit enclosure 1450 mm Thickness of main circuit enclosure 12 mm Phase to phase distance 1900 mm Insulator creepage distance 606 mm Number of sheds 9

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1.3 List of drawings The manufacturer has guaranteed that the object submitted for tests has been manufactured in accordance with the following drawings. KEMA has verified that this these drawings adequately represent the object tested. The following drawings are included in this Certificate. drawing nr. title date issued revision nr. FMT-43-1B Isolated Phase Busduct

Nameplate 13-5-2011 A

FM991-SYD-DMT Isolated Phase Busduct Section Drawing

13-5-2011 A

FM991-SYD-00 Isolated Phase Busduct Type Test Assembly

13-5-2011 A

FM991-SYD-01 Isolated Phase Busduct Tested section

13-5-2011 A

FM991-SYD-02 Isolated Phase Busduct Starpoint section

13-5-2011 A

FM991-SYD-03 Isolated Phase Busduct E piece assembly

13-5-2011 A

FM991-SYD-04 Isolated Phase Busduct Bonding Plate

13-5-2011 A

FM991-SYD-05 Isolated Phase Busduct Bonding Plate

13-5-2011 A

FMT 18IV Isolated Phase Busduct Insulator Assembly

13-5-2011 A

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2 GENERAL INFORMATION 2.1 The tests were witnessed by Name Company

Mr Sun Bing Jiangsu Daqo Enclosed Busbar Systems Co., Ltd. Jiangsu, China

Mr H.W.O. Siebenhaar Moody International B.V. Vlaardingen, the Netherlands

2.2 The tests were carried out by Name Company

Mr S. Smeenk KEMA Nederland B.V., Mr L. Scheltinga Arnhem, the Netherlands Mr A.H. Minkhorst 2.3 Purpose of the test Purpose of the test was to verify whether the material complies with the specified requirements. 2.4 Measurement uncertainty A table with measurement uncertainties is enclosed in appendix A. Unless otherwise indicated in the report, the measurement uncertainties of the results presented are as indicated in this table. 2.5 Applicable 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.

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3 DIELECTRIC TESTS 3.1 Power frequency withstand voltage Standard and date Standard IEEE Std C37.23, clause 6.2.1 Test date 4 July 2011 Environmental conditions Ambient temperature 21,8 C Ambient air pressure 1016 hPa Temperature of test object 21,8 C Humidity 9,5 g/m3

Characteristic test data Specified test voltage 60 kV Clients specification 60 kV Correction factor kd/kh 0,981 Corrected test value (clients specification) 58,9 kV No correction factor was applied. The test was carried out on one single phase.

testing arrangement voltage applied, 50 Hz

duration

voltage applied to earth connected to (kV) (min) conductor enclosure 60 1

Requirements No breakdown or flashover shall occur. Result The test was passed.

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3.2 Lightning impulse withstand voltage tests

Standard and date Standard IEEE Std C37.23, clause 6.2.1.2 Test date 4 July 2011 Environmental conditions Ambient temperature 21,8 C Ambient air pressure 1016 hPa Temperature of test object 21,8 C Humidity 9,8 g/m3

Characteristic test data Specified test voltage 125 kV Positive correction factor kd/kh 0,986 Negative correction factor kd/kh 0,988 Corrected test voltage positive polarity

123,3 kV

Corrected test voltage negative polarity

123,5 kV

No correction factor was applied. The test was carried out on one single phase.

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Lightning impulse withstand voltage tests (continued)

Requirement No breakdown or flashover shall occur. Result The test was passed.

testing arrangement polarity voltage applied (% of test voltage)

no. of impulses

see figure

voltage applied to

earth connected to

conductor enclosure Pos. 50 1 1 (wave shape) 80 1 2 100 3 3 conductor enclosure Neg. 50 1 4 (wave shape) 80 1 5 100 3 6

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4 CONTINUOUS CURRENT TEST

Standard and date Standard IEEE Std C37.23, clause 6.2.2 Test date 20 June 2011 Characteristic test data Specified rated current 24000 A, 60 Hz The positions of the thermocouples are visible in the drawing of on page 16. After 11 h and 37 min thermal stability was reached, the results are listed below. thermo couple