GESELLSCHAFT FÜR ELEKTRISCHE HOCHLEISTUNGSPRÜFUNGEN Mitglied der Short-Circuit-Testing Liaison (STL) Test Report

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panel with circuit-breaker 3AH Siemens AG, EV MS Siemens AG, EV MS1 G Testing Station: PEHLA Prüffeld Frankfurt / M. Date of Test: 05.06.

1 Mitglied der Short-Circuit-Testing Liaison (STL) Test Report Report-No.: 9725Fr Copy-No.: 00 Contents: 16Sheets Equipment under Test: Manufacturer: Client: Metal-enclosed, single-pole metal-clad and SF 6 -insulated medium voltage switchgear 8DA10 (36kV; 2500A; 40kA/3s), circuit-breaker panel with circuit-breaker 3AH Siemens AG, EV MS Siemens AG, EV MS1 G Testing Station: PEHLA Prüffeld Frankfurt / M. Date of Test: Applied Test Specifications: IEC 298, , clause 6 IEC 694, , clause 6 VDE 0670 Teil 6, , Abschnitt 6 VDE 0670 Teil 1000, , Abschnitt 6 (Entwurf) Tests performed: 1. Temperature-rise test of the circuit-breaker panel with the rated normal current of 2500A. 2. Measurement of the resistance of the main circuits. Test Results: The above mentioned equipment under test has passed the temperature-rise test with the rated normal current of 2500A corresponding to the applied test specifications. GESELLSCHAFT FÜR ELEKTRISCHE HOCHLEISTUNGSPRÜFUNGEN Technical Committee Mannheim, The test results relate only to the items tested. Without a written permission of PEHLA it is not allowed to make reproduction in extracts of this document. Copying the cover sheet accompanied by sheet 2 and the sheets mentioned here is an exception. DAT-P-013/92-51e

2 Report-No.: 9725Fr Sheet: 2 Accreditation The PEHLA-Testing station Frankfurt/Main has been approved by the DATech (German accreditation body for technology) according to DIN EN for tests in the field of high-voltage switchgear and controlgear (Registration-No. DAT-P-013/92-51e). Under reference to DIN EN PEHLA states the following: - The accreditation of the PEHLA-Testing station or any of its test reports by themselves in no way constitute or imply product approval by DATech or any other body. - If someone refers to a test in an accredited PEHLA-Testing station this reference shall include the accreditation body, i.e. DATech, the relevant scope of the accreditation and the appropriate registration number. PEHLA-Documents A Test Certificate is issued for type tests which have successfully been carried out in full compliance with the relevant specifications or standards and STL Guides valid at the time of the test. For these tests the equipment under test must be clearly identified by technical description, drawings and additional specifications. A Test Document is issued for parts of type tests which have successfully been carried out in full compliance with the relevant specifications or standards and STL Guides valid at the time of test. For these tests the equipment under test must be clearly identified by technical description, drawings and additional specifications. A Test Report is issued for all other tests which have been carried out according to specifications, standards or "PEHLA- Richtlinien" (PEHLA Guides) and/or clients instructions. Similarly, this test report contains all test results, details of the conditions under which the tests were carried out, also details relating to the behaviour of the equipment during test, and its condition after the tests. Addresses: Office: Testing Station: Manufacturer: Client: PEHLA-Geschäftsstelle Hallenweg 40 D Mannheim PEHLA-Prüffeld Frankfurt/M. Karl - Benz - Str. 22 Siemens AG Power Transmission and Distribution, Medium-Voltage Switchgear and -systems (EV MS) Karl - Benz - Str. 22 D Frankfurt/M. D Frankfurt/M. Siemens AG Power Transmission and Distribution, Medium-Voltage Switchgear and -systems (EV MS) EV MS1 G Karl - Benz - Str. 22 D Frankfurt/M.

3 Report-No.: 9725Fr Sheet: 3 Table of Contents FRONT SHEET 1 ACCREDITATION 2 TABLE OF CONTENTS 3 PARTICIPANTS OF THE TEST 4 TECHNICAL DATA OF THE EQUIPMENT UNDER TEST 5 TECHNICAL DATA OF THE EQUIPMENT UNDER TEST 6 DRAWING OF THE EQUIPMENT UNDER TEST 7 DRAWING OF THE EQUIPMENT UNDER TEST 8 DRAWING-NO. 9 TEST ARRANGEMENT AND POSITION OF THE MEASURING POINTS 10 MEASUREMENT OF THE RESISTANCE OF THE MAIN CIRCUITS 11 TEMPERATURE-RISE TEST, MEASURANDS 12 TEMPERATURE-RISE TEST, MEASURANDS 13 TEMPERATURE-RISE TEST, DIAGRAM 14 PHOTOS 15 PHOTOS 16

4 Report-No.: 9725Fr Sheet: 4 Participants of the Test Representatives of Test Committee: Mr. Schuck Mr. Weinel PEHLA-Prüffeld Frankfurt/M. PEHLA-Prüffeld Mannheim-Rheinau Test Engineer: Mr. Mayer PEHLA-Prüffeld Frankfurt/M. (guidance and performance of the test) Client: Mr. R. Müller Siemens AG, EV MS1 G PG1 Other Participants: Mr. Wolff Mr. Bär Siemens AG, EV MS1 G PG1 Siemens AG, EV MS TVF

5 Report-No.: 9725Fr Sheet: 5 Technical Data of the Equipment under Test Switchgear Instructions of the manufacturer Equipment under Test: Metal-enclosed, single-pole metal-clad and SF 6 -insulated medium-voltage switchgear Type: 8DA10 Manufacturer: Siemens AG, EV MS Serial-No.: Year of manufacture: 1997 Drawing-No.: , Änd.-Z. 00, Bl. 1- of and , Änd.-Z. 05, Bl. 1+ of The drawings and parts list used for the identification of the equipment under test were stamped and signed by the representatives of the PEHLA-Technical Committee. They are kept to the test documents in the test laboratory. The manufacturer has confirmed with his signature that the equipment under test corresponds to the applied drawings and parts list. (continued on sheet No. 9) Rated voltage Rated lightning impulse withstand voltage Rated switching impulse withstand voltage Rated power frequency withstand voltage Rated frequency Rated normal current Rated peak withstand current Rated short-time withstand current Rated duration of short circuit 36 kv 170 kv - kv 70 kv 50/60 Hz 2500 A 100 ka 40 ka 3 s Insulating agent SF 6 Rated filling gauge pressure (20 C) of the circuit-breaker compartment 0,10 MPa Minimum functional gauge pressure (20 C) of the circuit-breaker compartment 0,08 MPa Rated filling gauge pressure (20 C) of the busbar compartment 0,05 MPa Minimum functional gauge pressure (20 C) of the busbar compartment 0,03 MPa Permitted values under internal arc conditions Peak current Short-circuit alternating current Duration of short circuit - ka - ka - s Essential characteristics and installed devices: (continued on sheet No. 6)

6 Report-No.: 9725Fr Sheet: 6 Technical Data of the Equipment under Test Switchgear Instructions of the manufacturer Essential characteristics and installed devices: (continued from sheet No. 5) 1. Test arrangement (see photo No. 1 and No. 2) Panel-No. Panel type 7 Circuit breaker panel (36kV;1250A; 40kA/3s) 10 Circuit breaker panel (36kV; 1250A; 40kA/3s) 11 Circuit breaker panel (36kV; 2500A; 40kA/3s) 2. Circuit-breaker: Type 3AH / Year of manufacture 1997 Panel-No. Serial-No. of the Type of the Serial-No. of the vacuum tube circuit-breaker module vacuum tube L1 L2 L3 7 S VS / D S VS / D S VS / D Current transformers Panel-No. Type of the Transformation Serial-No. of the current transformers current transformers ratio L1 L2 L3 7 4MC4543 XD 2500A / 5A 97/ / / A / 5A 10 4MC4542 XD 2500A / 5A 97/ / / MC4543 XD 2500A / 5A 3000A / 5A 97/ / / With the transformation ratio 2500A / 5A the current transformers of the panel No. 11 were used for verification of the test current in panel No. 11 (2500A). 4. The temperature-rise test was performed at the minimum functional gauge pressure of the switchgear (0,08MPa at 20 C in the circuit-breaker compartment and 0,03MPa at 20 C in the busbar compartment). 5. Varnished were the aluminium chambers of the panel No. 11 (see photo No. 1 and No. 2). 6. Black varnished were the following parts or zones of the current path in panel No. 11: - the cooling sheet at the upper connection of the vacuum tube - the cooling sheets in the intermediate chamber and - the outer surfaces of the external copper bars in the intermediate chamber. Date of receipt of the equipment under test :

7 Report-No.: 9725Fr Sheet: 7 Drawing of the Equipment under Test

8 Report-No.: 9725Fr Sheet: 8 Drawing of the Equipment under Test

9 Report-No.: 9725Fr Sheet: 9 Drawing-No. Position-No. Number of drawing or part list Quantity Description / Gehäuse L= / Ring / Ring Querkupplung / Deckel / Tragblech / Gießharzstützer / Deckel / Schiene, Cu 80mm x 10mm / Schiene, Cu 80mm x 10mm / Schiene komplett, Cu 80mm x 10mm / Kühlblech, Cu / Kühlblech, Cu / Kühlblech, Cu / SS-Gehäuse L= / Durchführung / Deckel / Erdungsbrücke / Lasche, Cu 80mm x 10mm / Lasche, Cu 80mm x 10mm / Schiene, Cu 80mm x 10mm / Lasche, Cu 80mm x 10mm / Lasche, Cu 80mm x 10mm / Schienenträger / Gegenkontakt / Anschlußbolzen / Anschluß / Schiene, Cu 80mm x 10mm / Schiene, Cu 80mm x 10mm / Schiene, Cu 80mm x 10mm 1) 2) 1) 3) 3) 3) 1) 2) 3) silver-coated and black varnished silver-coated black varnished

Report-No.: 9725Fr Sheet: 10 Test Arrangement and Position of the Measuring Points 7 10 11 Panel- No.

10 Report-No.: 9725Fr Sheet: 10 Test Arrangement and Position of the Measuring Points Panel- No. 1250A 1250A 2500A Test current, three-phase 2 x size 1/phase 2 x size 1/phase 3 x size 1/phase Plug-in connectors from Pfisterer Terminal Cu cables, 2x(3x95mm 2 )/phase Cu cables, 2x(3x95mm 2 )/phase Cu bars, 3x60mmx10mm/phase - - Cu bars, 2x80mmx10mm Cross section (see photo of terminals no. 3) Short circuiting link (see photo no. 4)

11 Report-No.: 9725Fr Sheet: 11 Measurement of the Resistance of the Main Circuits 1. Before the temperature-rise test Measuring section between the measuring points Resistance of the main circuits µω (see sheet 10) L1 L2 L , , , , , , , , , , , ,90 9,30 11, ,60-2. After the temperature-rise test Measuring section between the measuring points Resistance of the main circuits µω (see sheet 10) L1 L2 L , , , , , , , , , , , ,90 9,80 11, ,50 - Remarks: Resistance measurement at a direct current of: 100 A

12 Report-No.: 9725Fr Sheet: 12 Temperature-rise Test, Measurands Date of test: Duration of test: 18,5 h Ambient air temperature: 24,5 C Test current: 2500 A Test frequency: 50 Hz Measuring point (see sheet 10) Description of the measuring point Nature of the measuring point Connection, Final temperature C Final temperature rise K Permissible temperature rise K 1 L2 Main busbar bolted or equivalent, 73,0 48,5 75,0 Main busbar Cu silver-coated in SF 6 Metal part in contact 2 L2 at cast resin with insulation 74,0 49,5 65,0 bushing Busbar at material class A Metal part in contact 3 L2 cast resin post with insulation 78,0 53,5 65,0 insulator material class A 4 L2 Fixed contact of Contact, 80,5 56,0 65,0 the isolator Cu silver-coated in SF 6 Fixed contact of Contact, 5 L2 the isolator at cast Cu silver-coated in SF 6 86,5 62,0 65,0 resin bushing Copper bar at Metal part in contact 6 L2 cast resin with insulation 84,0 59,5 65,0 bushing Copper bar at material class A Metal part in contact 7 L2 cast resin post with insulation 86,0 61,5 65,0 insulator Bolted joint between material class A Connection, 8 L2 copper bar and bolted or equivalent, 90,0 65,5 75,0 flexible connector Cu silver-coated in SF 6 Bolted joint between Connection, 9 L2 flexible connector and bolted or equivalent, 97,5 73,0 75,0 vacuum tube Cu silver-coated in SF 6 Lower bolted joint Connection, 10 L2 at the bolted or equivalent, 98,5 74,0 75,0 vacuum tube Cu silver-coated in SF 6 Remarks: The permissible temperature rises are valid for an ambient air temperature of 40 C. The stagnation was reached after 9,0 hours.

13 Report-No.: 9725Fr Sheet: 13 Temperature-rise Test, Measurands Date of test: Duration of test: 18,5 h Ambient air temperature: 24,5 C Test current: 2500 A Test frequency: 50 Hz Measuring point (see sheet 10) Description of the measuring point Nature of the measuring point Connection, Final temperature C Final temperature rise K Permissible temperature rise K 11 L2 Connector bolted or equivalent, 97,0 72,5 75,0 Threaded bush in Cu silver-coated in SF 6 Metal part in contact 12 L2 the cast resin with insulation 80,5 56,0 65,0 support ring material class A L1 Copper bar Terminal, bolted, 63,5 39,0 13 L2 at terminal Cu silver-coated in air 64,0 39,5 65,0 L3 63,5 39,0 L1 Copper bar, 58,5 34,0 14 L2 1m distance to - 61,0 36,5 - L3 measuring point 13 58,5 34,0 Remarks: The permissible temperature rises are valid for an ambient air temperature of 40 C. The stagnation was reached after 9,0 hours.

14 Report-No.: 9725Fr Sheet: 14 Temperature-rise Test, Diagram

15 Report-No.: 9725Fr Sheet: 15 Photos

16 Report-No.: 9725Fr Sheet: 16 Photos

Independent, accredited testing station Member laboratory of STL and LOVAG TEST CONFIRMATION. on the given range of performed tests

Independent, accredited testing station Member laboratory of STL and LOVAG TEST CONFIRMATION on the given range of performed tests 3M Laboratories Europe Zweigniederlassung der 3M Deutschland GmbH Carl-Schurz-Str.