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. 1 D-41453 Neuss 3M Laboratories Europe Three-core silicone outdoor termination for three-core power cables with extruded synthetic insulation QTII(X)6S-32 CLIENT MANUFACTURER TEST OBJECT TYPE 3 test samples MANUFACTURING NO. Rated voltage U 0 /U Maximum value of highest system voltage U m Rated cross-section range 12/20 24 95...300 kv kv mm 2 RATED CHARACTERISTICS GIVEN BY THE CLIENT Based on CENELEC Harmonization Document HD 629.1 S1 November 1996 CENELEC Harmonization Document HD 628 S1 November 1996 DIN VDE 0278-629-1 (VDE 0278 Teil 629-1): 1997-11 DIN VDE 0278-628 (VDE 0278 Teil 628): 1997-11 and as agreed with the client Test series A1, A2 and A3 NORMATIVE DOCUMENT RANGE OF TESTS PERFORMED 18 February 2002 to 2 May 2002 DATE OF TEST The type tests of test series A1, A2 and A3 have been PASSED. The test results are documented in EPM Test Report No. 410101. TEST RESULT The tests were witnessed by IPH. We herewith certify the correctness of the tests and the respective test reports. DR. R. PLATH Head of high-voltage test laboratory Berlin, 1 November 2002 J. WITTWER Witness This documentation shall not be reproduced in extracts without written approval by IPH GmbH. The test results relate only to the object tested. Independent test laboratory, accredited by Deutsche Akkreditierungsstelle Technik (DATech) e.v. in the fields of h.v. apparatus and switchgear, power cables and power cable accessories, l.v. apparatus and switchgear, installation equipment and switching and control equipment.. DAT - P - 019/92 IPH LANDSBERGER ALLEE 378 D-12681 BERLIN TEL. 030/54 96 02 00 FAX 030/54 96 02 22

SWM- Versorgungs GmbH Postfach 80287 München Versorgungs GmbH Mess- und Abrechnungsservice Besuchsanschrift: Franzstr. 9 80802 München Sachbearbeiter: Herr Nevihosteny Telefon: 2361-8022 Telefax: 2361-8033 Munich, june 23 th, 2002 Test Report Nr. 410101 Subject of Test: 3 core silicone outdoor termination QTII 12/20(24) kv Type QTII(X)6S-32 termination body size K Manufacturer: 3M Laboratories (Europe) Carl- Schurz- Str. 1 D- 41453 Neuss Applicant: 3M Company Scope of Test: According to CENELEC HD 628 S1 and CENELEC HD 629.1 S1 Test requirements for accessories for extruded polymeric cables with rated voltage from 3.6/ 6 (7.2) kv up to 20.8/ 36 (42) kv and requirements of the manufacturer. Test Result: Test requirements were fulfilled. This report gives information only about the specimens submitted for testing; it is not a certificate of quality of the series production. This test report may be brought to the notice of third parties only in its entire wording. Any publication or duplication requires the previous written consent of the Elektrisches Prüfamt München. It is valid only in its entirety and comprises 19 pages and 3 appendices.

Elektrisches Prüfamt München Report No. 410101 Page 2 Test Period Start: 18.02.2002 Completion: 02.05.2002 Data of Test Specimen Number: 2 test loops respectively one 3 core silicone outdoor termination QTII 12/20(24) kv Type QTII(X)6S-32. Cable: N2XSEFGY 3x 150 RM 12/ 20 kv Cable data: Outer cable sheath= 79.0 mm Outer semi-cond.layer= 28.0mm Outer primary insulation= 26.8 mm Outer conductor= 14.6 mm Outer copper screen= 28.2 mm Cable length: approx. 2.5 m Installation Test loops were installed by technicians of the manufacturer at the Elektrisches Prüfamt München according to installation instructions of attached Appendix 3.

Elektrisches Prüfamt München Report No. 410101 Page 3 Test Program No. Sequence of tests according to HD 629.1 S1:1996, Table 4 and 3M Requirements Tests Test acc. to Section Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 D.C. withstand voltage test, dry 15 min. at 6 U O 72 kv 5 4 A.C. withstand voltage test, dry 5 min. at 4.5 U O 55 kv 4 5 A.C. withstand voltage test, dry 4 h. at 4.5 U O 48 kv 4 5 A.C. withstand voltage test, under rain 1 min. at 4.0 U O 48 kv 4 6 Partial discharge 24 kv < 20 pc at ambient temperature 15 kv < 3 pc 7 7+ 8 Impulse withstand voltage test at elevated temperature 10 pulses of each polarity 125 kv and 150 kv 6+ 8 9+ 10 Thermal cycling test in air 3 cycles at 2.5 U O 30 kv 523 A 8+ 9 11 Partial discharge at ambient temperature 24 kv < 20 pc 7 11 Partial discharge at elevated temperature 24 kv < 20 pc 7+ 8 12 Thermal cycling test in air 113 cycles at 2.5 U O 30 kv 523 A 9 12 Test of water tightness, combined with 10 heat cycles 523 A 9 12 Partial discharge 24 kv < 20 pc at ambient temperature 15 kv < 3 pc 7 13 Partial discharge 24 kv < 20 pc at elevated temperature 15 kv < 3 pc 7+ 8 13 Thermal short circuit ( screen ) 2 short circuits at 1 s 4.5 ka 10 14 Thermal short circuit ( conductor ) 2 short circuits at 1 s 27.2 ka 11 14 Impulse withstand voltage test at ambient temperature 10 pulses of each polarity 125 kv and 150 kv 6 15 A.C. withstand voltage test at ambient temperature 15 min. at 2.5 U O 30 kv 4 16 D.C. withstand voltage test, dry 30 min. at 8 U O 96 kv 5 17 19 Salt fog test 1000 h (1600 ± 200 ) ms/m at 1.25 U O 15 kv 13 18 20 Examination - 19 Test was conducted on a special test loop.

Elektrisches Prüfamt München Report No. 410101 Page 4 The following tests were conducted in compliance with the test sequence on page 3. D.C. Withstand Voltage Test, Dry, according to Section 5 ( Test No. 1 ) The test loops between conductor and screen were exposed to a negative D.C. voltage of 72 kv for 15 min. The A.C. voltage share in the D.C. voltage was about 3%. relative humidity of air atmospheric pressure temperature 42 % 956 mbar 21 C Result: No breakdown occurred on the two test loops. ST 380/0...380 V HT 380/100000 V G Pr C M 30 kva 30 kva ST = Regulating transformer HT = High-voltage transformer Pr = Test specimen M = D.C. voltage measuring instrument G = Rectifier C = Capacitor Connection Diagram for D.C. Withstand Voltage Test

Elektrisches Prüfamt München Report No. 410101 Page 5 A.C. Withstand Voltage Test, Dry, according to Section 4 ( Tests No. 2 and No. 3) An effectively sinusoidal A.C. voltage of 55 kv rms, 50 Hz, was applied successively between one conductor, the other grounded conductors and the screen for 5 minutes each time. The voltage was continuously increased to the specified value and was then held constant during the required duration of the test. Subsequently the test was repeated as described in test no. 2, with an effectively sinusoidal A.C. voltage of 48 kv rms, 50 Hz, for 4 hours each time. relative humidity of air atmospheric pressure temperature 42 % 956 mbar 21 C Result: No breakdown occurred on the two test loops. ST 380/0...380 V HT 380/100000 V 30000 60000 SW 100 V (Kl 0,1) Pr M 30 kva 30 kva ST = Regulating transformer HT = High-voltage transformer Pr = Test specimen SW = Measuring transformer M = Voltage measuring instrument Connection Diagram for A.C. Withstand Voltage Test

Elektrisches Prüfamt München Report No. 410101 Page 6 Power Frequency Voltage Test under Artificial Rain according to Section 3.1 ( Test No. 4 ) The test specimen was arranged as specified and exposed to artificial rain in compliance with HD 588.1, Section 9.1. Conditions: Average quantity of rain: 3 mm/ min. Temperature of the collected water approx. 20 C Specific resistance of the water at 20 C: 100 Ω m The specimen was exposed to a preliminary rain at a load-free condition for approx. 3 minutes. Subsequently, under rain an effectively sinusoidal A.C. voltage of 48 kv rms, 50 Hz, was applied successively between one conductor, the other grounded conductors and the screen, each time for 1 minute. The voltage was continuously increased to the specified value within 10 seconds and was then held constant during the required duration of the test. relative humidity of air atmospheric pressure temperature 42 % 956 mbar 21 C Result: No breakdown occurred on the two test loops. ST 380/0...380 V HT 380/100000 V 30000 60000 SW 100 V (Kl 0,1) Pr M 30 kva 30 kva ST = Regulating transformer HT = High-voltage transformer Pr = Test specimen SW = Measuring transformer M = Voltage measuring instrument Connection Diagram for A.C. Withstand Voltage Test

Elektrisches Prüfamt München Report No. 410101 Page 7 Partial Discharge Test at Ambient Temperature according to Section 7 ( Test No. 5 ) a) Measuring instrument The partial discharge detector ICM compact- Version 1.42 01/24/97 of Power Diagnostix Systems GmbH was used to measure the partial discharge on the test loops, depending on the applied voltage. Indicating sensitivity: Basis interference level: 0.2 pc < 0.5 pc b) Test circuit Coupling quadripole was connected in series to test loops. Z Q C K Tr U D Z A Tr = High-voltage source U = High-voltage measuring instrument Z = Impedance Z A = Coupling quadripole C P = Test loop C K = Coupling capacitor D = Detector Q = Calibrator Connection Diagram for Partial Discharge Test

Elektrisches Prüfamt München Report No. 410101 Page 8 c) Test performance The test loops were stored in a dry and clean condition for 3 hours before the test, at an ambient temperature of about 20 C. Afterwards the connection elements were made discharge free by use of shielding electrodes, and a test A.C. voltage of 24 kv was applied and the maximum value of the partial discharge intensity was measured within 1 minute. Subsequently, the voltage was decreased to a test A.C. voltage of 15 kv and the partial discharge intensity was repeated. relative humidity of air atmospheric pressure temperature 42 % 946 mbar 20 C Result of the partial discharge test: partial discharge ( pc ) conductor at Test loop 24 kv 15kV no. 1 L 1 < 10 < 3 no. 1 L 2 < 10 < 3 no. 1 L 3 < 10 < 3 no. 2 L 1 < 10 < 3 no. 2 L 2 < 10 < 3 no. 2 L 3 < 10 < 3 Admissible partial discharge level: 10 pc

Elektrisches Prüfamt München Report No. 410101 Page 9 Impulse Withstand Voltage Test according to Section 6 ( Test No. 6) The test specimens were arranged in compliance with the instruction, were heated with 523 A for about 3 hours, and the temperature was held constant during the test performance. The test was performed with an impulse voltage of which the rise time was approx. 1.2 µs and the half-value decay was approx. 50 µs. The test loops were exposed to 10 impulses each with an impulse voltage of 125 kv and 10 impulses each with an impulse voltage of 150 kv of positive and negative polarity between one conductor, the other grounded conductors and the screen. Prior to the tests with positive and negative polarity, the test loops were exposed once to 50 %, 65 % and 80 % of the nominal impulse voltage. F L R d U = C b C s R e P r C b M C S = Impulse capacitor F = Spark gap discharger R e = Discharge resistor L = Impulse circuit inductive resistor R d = Damping resistor C b = Additional load capacitor P r = Test specimen T = Impulse voltage divider M = Impulse voltage measuring instrument Simplified Connection Diagram

Elektrisches Prüfamt München Report No. 410101 Page 10 relative humidity of air atmospheric pressure temperature 44 % 944 mbar 21 C Result: No breakdown occurred on the two test loops. The following impulse oscillograms of conductor 1 of test loop 1 do not show any deviation from the calibration oscillogram and the impulse oscillograms of conductor 2 and conductor 3. The oscillogram of the second test loop was identical to those of test loop 1. 10 th impulse of 125 kv of 10 th impulse of 125 kv of negative polarity positive polarity 10 th impulse of 150 kv of 10 th impulse of 150 kv of negative polarity positive polarity

Elektrisches Prüfamt München Report No. 410101 Page 11 Thermal Cycling Test in Air according to Section 9 ( Test No. 7 ) The test loops were connected, in compliance with HD 628 S1:1996 Section 8, for one-phase heating to the source of current and were exposed to 3 heat cycles in air, with a continuous test voltage of 30 kv being applied. Each heat cycle consisted of a five-hours heating period and a three-hours cooling period. The current measured at a control cable was 523 A with a conductor temperature of 95 C. At the end of the heating period of the first heat cycle, the current was adjusted to the specified value and remained unchanged during the subsequent test run. Ambient temperature during the heat cycling test was about 20 C. Result: No breakdown occurred on the two test loops. Partial Discharge Test at Ambient Temperature according to Section 7 ( Test No. 8 ) After the 3 rd heat cycling test the partial discharge test at ambient temperature was repeated as described in test no. 5. relative humidity of air atmospheric pressure temperature 43 % 945 mbar 20 C partial discharge ( pc ) conductor at Test loop 24 kv 15kV no. 1 L 1 < 10 < 3 no. 1 L 2 < 10 < 3 no. 1 L 3 < 10 < 3 no. 2 L 1 < 10 < 3 no. 2 L 2 < 10 < 3 no. 2 L 3 < 10 < 3 Admissible partial discharge level: 10 pc

Elektrisches Prüfamt München Report No. 410101 Page 12 Partial Discharge Test at Elevated Temperature according to Section 7 ( Test No. 9) The test specimens were arranged in compliance with the instruction as described in test no. 5, were heated with 523 A for about 3 hours, and the temperature was held constant during test performance. relative humidity of air atmospheric pressure temperature 43 % 945 mbar 20 C Result of partial discharge test: partial discharge ( pc ) conductor at Test loop 24 kv 15kV no. 1 L 1 < 10 < 3 no. 1 L 2 < 10 < 3 no. 1 L 3 < 10 < 3 no. 2 L 1 < 10 < 3 no. 2 L 2 < 10 < 3 no. 2 L 3 < 10 < 3 Admissible partial discharge level 10 pc Thermal Cycling Test in Air according to Section 9 ( Test No. 10 ) The same as test no. 7, however, with 113 heat cycles. Result: No breakdown occurred on the two test loops. Test of Water Tightness according to Section 3.11.2 with Heat Cycles according to Section 3.4 ( Test No. 11 ) The test loops were arranged with the terminations in a water tank in such a way that the whole termination, including the top of the connection element, was fully immersed in water. In this position they were subjected to 10 heat cycles at a current of 523 A with a conductor temperature of 95 C. Each heat cycle consisted of a five-hours heating period and a three-hours cooling period. The conductivity of the water was 700 ms/ m.

Elektrisches Prüfamt München Report No. 410101 Page 13 Partial Discharge Test at Ambient Temperature according to Section 7 ( Test No. 12 ) The partial discharge test at ambient temperature was repeated as described in test no. 5. relative humidity of air atmospheric pressure temperature 46 % 952 mbar 20 C Result of the partial discharge test: partial discharge ( pc ) conductor at Test loop 24 kv 15kV no. 1 L 1 < 10 < 3 no. 1 L 2 < 10 < 3 no. 1 L 3 < 10 < 3 no. 2 L 1 < 10 < 3 no. 2 L 2 < 10 < 3 no. 2 L 3 < 10 < 3 Admissible partial discharge level: 10 pc Partial Discharge Test at Elevated Temperature according to Section 7 ( Test No. 13 ) The test specimens were arranged in compliance with the instructions as described in test no. 5, were heated with 523 A for about 3 hours, and the temperature was held constant during test performance. Result of the partial discharge test: partial discharge ( pc ) conductor at Test loop 24 kv 15kV no. 1 L 1 < 10 < 3 no. 1 L 2 < 10 < 3 no. 1 L 3 < 10 < 3 no. 2 L 1 < 10 < 3 no. 2 L 2 < 10 < 3 no. 2 L 3 < 10 < 3 Admissible partial discharge level: 10 pc

Elektrisches Prüfamt München Report No. 410101 Page 14 Thermal Short Circuit Test of Screen according to Section 11 ( Test No. 14 ) The short circuit current of the screen was 4.5 ka/ 1 s according to the manufacturer's information. Test set-up: Both ends of the screen were connected to the source of current. The conductors were set up in compliance with the instruction, heated with 523 A for about 3 hours, and the temperature was held constant during test performance. Test current 4.5 ka Test time 1.0 s This short circuit loading was repeated once, following the cooling down of the cable screen to a temperature of 5 K to 10 K above the initial short circuit temperature Θ i. ( Room temperature 21 C ). Result: No damage was detected in a visual inspection of both test loops. Thermal Short Circuit Test of Conductor according to Section 11 ( Test No. 15 ) The maximum admissible short circuit temperature of the cable conductor Θ SC was 250 C, therefore a short- circuit- current of 27.2 ka is necessary. Test set-up: One end of the cable was connected to the source of current and the other end was short circuited. Owing to the test device, the test had to be carried out with a lower current, while the test time was prolonged accordingly. Test current 16.9 ka Test time 2.6 s The short circuit loading was repeated once, following the cooling down of the conductors to a temperature of 5 K to 10 K above the initial circuit temperature Θ. ( Room temperature 21 C ). Result: No damage was detected in a visual inspection of both test loops.

Elektrisches Prüfamt München Report No. 410101 Page 15 Impulse Withstand Voltage Test at Ambient Temperature according to Section 6 ( Test No. 16) The impulse withstand test at ambient temperature was repeated as described in test no. 6, without heating. relative humidity of air atmospheric pressure temperature 58 % 960 mbar 21 C Result: No breakdown occurred on the two test loops. The following impulse oscillograms of conductor 1 of test loop 1 do not show any deviation from the calibration oscillogram and the impulse oscillograms of conductor 2 and conductor 3. The oscillogram of the second test loop was identical to those of test loop 1. 10 th impulse of 125 kv of 10 th impulse of 125 kv of negative polarity positive polarity 10 th impulse of 150 kv of 10 th impulse of 150 kv of negative polarity positive polarity

Elektrisches Prüfamt München Report No. 410101 Page 16 A.C. Withstand Voltage Test at Ambient Temperature according to Section 4 ( Test No. 17 ) An effectively sinusoidal A.C. voltage of 30 kv rms, 50 Hz, was applied to both specimens between one conductor, the other grounded conductors and the screen for 15 minutes each time. The voltage was continuously increased to the specified value and was then held constant during the required duration of the test. relative humidity of air atmospheric pressure temperature 54 % 947 mbar 21 C Result: No breakdown occurred on the two test loops. ST 380/0...380 V HT 380/100000 V 30000 60000 SW 100 V (Kl 0,1) Pr M 30 kva 30 kva ST = Regulating transformer HT = High-voltage transformer Pr = Test specimen SW = Measuring transformer M = Voltage measuring instrument Connection Diagram for A.C. Withstand Voltage Test

Elektrisches Prüfamt München Report No. 410101 Page 17 D.C. Withstand Voltage Test, Dry, according to Section 5 ( Test No. 18 ) The test loops between conductor and screen were exposed to a negative D.C. voltage of 96 kv for 30 min. The A.C. voltage share in the D.C. voltage was about 3%. relative humidity of air atmospheric pressure temperature 58 % 946 mbar 21 C Result: No breakdown occurred on the two test loops. ST 380/0...380 V HT 380/100000 V G Pr C M 30 kva 30 kva ST = Regulating transformer HT = High-voltage transformer Pr = Test specimen M = D.C. voltage measuring instrument G = Rectifier C = Capacitor Connection Diagram for D.C. Withstand Voltage Test

Elektrisches Prüfamt München Report No. 410101 Page 18 Test under Salt Fog according to Section 13 ( Test No. 19) Test was conducted on a special test loop. The test loop was stored in a humidity chamber in compliance with the specifications of CENELEC HD 628.1 S 1/ 1996 and CENELEC HD 629.1 S 1/ 1996. Average room temperature : approx. 20 C Quantity of sprayed water : 0.4 ± 0.1 l mh 3 Conductivity of 1600 ± 200 ms / m at 23 C sprayed water: Test voltage during humid storage : 15 kv rms. 50 Hz (between conductor and screen) Overcurrent release : 1 ± 0.1 A Test time : 1000 h Requirements : No breakdown or flash-over. Not more than three releases. No fundamental damages. Description: All test specimens show salt incrustations on the cable lugs and feathery discharge traces on the surface of the termination, however, they are not burnt in. Result : The requirements are fulfilled. Page 1 of Appendix 2 contains pictures of the test loop after test performance of 1000 hours.

Elektrisches Prüfamt München Report No. 410101 Page 19 Examination ( Test No. 19 ) The 3 core silicone outdoor terminations QTII 12/20(24) kv, Type QTII (X)6S-32 passed the test according to CENELEC HD 628.1 S 1: 1996 and CENELEC HD 629.1 S 1: 1996, however, a dynamic short circuit test was not performed. ( Nevihosteny ) Chief Test Engineer

Elektrisches Prüfamt München Report No. 410101 Appendix 1 Page 1 of 1 Measuring Instruments Used No. Type of Measuring Instrument Manufacturer 102077 Precision voltmeter Goerz 108013 Standard voltmeter POSE 45 Ritz 109106 Discharge magnitude meter type 666 ERA 109107 Discharge detector model 3 type 652 ERA 109108 Discharge detector input unit no. 3 ERA 102078 Impulse voltmeter StM 76 MWB 112093 HEME 1000 snap-on ammeter HEME 102082 Analogue voltmeter 0.5 AEG 108021 Measuring transformer GSZ 30 Ritz 109066 High-voltage resistor Haefely 109067 High-voltage resistor Haefely 109068 D.C. voltage measuring instrument Haefely 111085 Multimeter model 87 Fluke Date: 03. 05.2002 Test performed by: Nevihosteny, Frackowiak