TYPE TEST CERTIFICATE OF COMPLETE TYPE TEST

VEIKI-VNL ELECTRIC LARGE LA BORA TORIES Ltd.

TESTING LABORATORY

No. 9742/VNL of21

TYPE TEST CERTIFICATE OF COMPLETE TYPE TEST

Test object:

Designation:

Manufacturer:

Accessories for use on power cables

Heat shrinkable single-core straight through joint

GREMTEK GmbH Robert-Bosch Str. 20-24,

D-25451 , Quick born

Germany

Tested for: GREMTEK GmbH

Date of tests: 29t1• November - 13th February 2017

Project ID: NFL - 48/ 2016

Order/Contract: 3714, 51h September, 2016

Test specification: HD 629.1 S2: 2006

Tests performed: The test objects, constructed in accordance with the description, drawings and photographs incorporated in this report has been subjected to the tests listed in page 4 based on the test sequences m 1 and B2 of the Table 5 in accordance with the above standard.

Test results: The test object fulfilled the relevant requirements of the standard.

This Type Test Certificate has been issued by VEIK.I-VNL Electric Large Laboratories Ltd. Testing Laboratory in accordance with above mentioned specification.

The Type Tests Certificate applies only to the test object. The responsibility for conformity of any product having the same designations with that tested rests with the Manufacturer.

This Type Test Certificate comprises 33 sheets in total (21 numbered pages, I data page for cable identification, 1 installation instruction on 5 pages and 6 oscillograms on 6 pages) .

.r ,.'1/>0S NAGY(4S vr o.~'- .

~~ ~~' -~" 01':' ~ "' ; ~ IAZ \ ~ v~~u ~~ ~- ' ;'("~ -Ofl ~~ .,r-#7" ~~~ ~Lt!Y.- 4::.~-~ 4~

Budapest, Attila Santha Csaba Homok ~lazs Varga 27th April, 2017 responsible for the test supervised by head of laboratory

Laboratory accredited by NAH under No. NAH-1-125 112015. VEIK.I-VNL Ltd. is an independent company, member of Short-circuit Testing Liaison (STL). Copyright: Only integral reproduction of this Report is permitted without written permission of VEIK.I-VNL Ltd. Electronic copies of this Report may be available and have status of"for information only". The sealed and bound version of the Report is the only valid version.

1158 Budapest, Vasgolyo u. 2-4., HUNGARY E-mail: [email protected] www. vnl .hu

Phone: +36-1-417 3157 Fax: +36-l-417 3163

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VEIKI-VNL ELECTRIC LARGE LABORATORIES Ltd.

TESTING LABORATORY

No. 9742/VNL Page2of21

TEST CERTIFICATES OR REPORTS ISSUED BY VEIKI-VNL ELECTRIC LARGE LABORATORIES LTD. TESTING LABORATORY

Type Test Certificate of Complete Type Test This certificate provides the verification of all the ·rated characteristics of the equipment as assigned by the manufacturer, by means of the performance of all type tests specified by the standards.

Type Test Certificate of Dielectric Performance This certificate provides the verification of all dielectric ratings, by means of the performance of the appropriate type tests specified by the standards.

Type Test Certificate of Temperature-Rise Performance This certificate provides the verification of temperature-rise limits together with measurement ofthe main circuit resistance, by means of the performance of the appropriate type tests specified by the standards.

Type Test Certificate of Short-Circuit I Making and Breaking Performance This certificate provides the verification of rated characteristics with respect short-circuit and/or making and breaking performance, by means of the performance of the appropriate type tests specified by the standards.

Type Test Certificate of Switching Performance This certificate provides the verification of the switching ratings (e.g. capacitive current), by means of the performance of the appropriate type tests specified by the standards.

Prototype Test Report Prototype tests are required to verify the suitability of the materials and method of manufacture for composite insulators defined by relevant ANSI standards.

Design Test Report According to IEC standard: The design tests are intended to verify the suitability of the design, materials and method of manufacture (technology) of composite insulators.

According to ANSI standard: The design tests are intended to verify the insulators electrical and mechanical characteristics that depend on its size and shape.

Type Test Report This report provides the verification of the rated characteristics of the equipment as assigned by the manufacturer, by means of the performance of the appropriate type tests specified by the standards, for type tests not indicated above.

Development Test Report This report is issued when the test is intended only to provide the Client with information about the performance of the equipment. The tests are performed in accordance with relevant standards, but are not intended to verify compliance of the equipment.

Control Test Report This report is issued for tests performed on equipment in service, or removed from service. Tests are performed, and compliance is evaluated in accordance with relevant standards.

Test Report Test report is issued in all cases not listed above.

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TESTING LABORATORY

Ratings/characteristics assigned by the manufacturer:

No. 9742NNL of21

Test object: Accessories for use on power cables Designation: Heat shrinkable straight through joint for

Type: Manufacturer: Rated voltage Uo/U (Urn):

1 core XLPE insulated cables lCXLJ-GT-24kV GREMTEK GmbH 12/20 (24) kV

The cable which was used for the tests: Manufacturer: Type: Conductor: Conductor construction: Insulation: Sheating material: Colour of outer sheath: Rated voltage:

KLAUS FABER AG NA2XS2Y lxl85 RM/25mm2 12/20(24kV) Aluminium stranded, class 2 XLPE DIX8 Polyethylene DMP2 Black

Maximum operating temperature: 12/20 (24) kV 70°C

Maximum temperature at conductor: 90°C

The tests were carried out in accordance with the following standards: HD 629.1 S2:2006 + Test requirements on accessories for use on power cables of AI :2008 rated voltage from 3.6/6 (7.2) kV up to 20.8/36 (42) kY

Part 1: Cables with extruded insulation

IEC 61442:2005 Test methods for accessories for power cables with rated voltages from 6 kV (Um=7.2 kV) up to 36 kV (Um=42 kV) (IEC 61442:2005, modified)

Requirements of manufacturer or purchaser:

List of manufacturer's documents for identification of the test object: (*Documents are attached to the test report.) Installation procedure*

Date of issue 24.02.2016

Identification of test cable*

Number of pages 5

Present at the test in charge of manufacturer or purchaser:

Issue No.I Revision 01 /02

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TESTING LABORATORY

No. 9742/VNL of21

TESTS PERFORMED ON THE TEST OBJECT

No. Description Relevant clauses of the standard 1 DC voltage dry IEC 61442: 2005 Clause 5 2 AC voltage dry IEC 61442: 2005 Clause 4 3 Partial discharge IEC 61442: 2005 Clause 7 4 Impulse voltage IEC 61442: 2005 Clause 6 5 Heating cycle voltage IEC 61442: 2005 Clause 9 6 Thermal short circuit (screen) IEC 61442: 2005 Clause 10 7 Thermal short circuit (conductor) IEC 61442: 2005 Clause 11

DESCRIPTION OF THE TESTS

1. Description of the tests according to the test sequence IBl

Type tests were performed on heat shrinkable straight through joint for extruded insulation cables for rated voltage of 12/20 (24) kY according to the test sequence IB1 of the Table 5 of the standard HD 629.1 S2.

The following test lines were prepared for the tests:

Lines 1-4: Indoor termination + XLPE insulated cable + straight through joint indoor termination + XLPE insulated cable + indoor termination The test object is shown on Photo l.

The following tests were performed on the samples:

Test clause Test sequence of

Test of HD 629.1 S2

EN 61442 Joint

I. D.C. voltage dry (I 5 min, 6Uo) 5 IBI 2. A.C. voltage dry (5 min, 4.5Uo) 4 IBI 3. Partial discharge at ambient temperature 7 IBI

(max. 10 pC at 1.73 Uo) 4. Impulse voltage at elevated temperature 6 IBl

5a. Heating cycle voltage in air (63 cycles, 2.5U0) 9 IB1 5b. Heating cycle voltage in water (63 cycles, 2.5U0)

6. Partial discharge at elevated and ambient 7 IBl temperature (max. 10 pC at l. 73 U0 )

7. Impulse voltage at ambient temperature 6 1B1 8. A. C. voltage dry_ (15 min, 2.5Uo) 4 IBl 9. Examination - IB1


TESTING LABORATORY

1.1. DC voltage test 1.1.1. Test method and parameters

No. 9742NNL of21

The DC voltage test was carried out according to the Clause 5 of the EN 61442 standard. This test was carried out at ambient temperature. A DC voltage of negative polarity was applied for 15 minutes to the samples between conductor and screen. The test voltage was 6Uo=72 kV. No breakdown or flashover on the insulation shall occur.

The test object is shown on Photo 1, and the test arrangement is shown on Photo 2.

The test and measuring circuit can be seen on Figure 3.

1.1.2. Test results During the DC voltage test no breakdown of the insulation occurred.

1.2. AC voltage test

1.2.1. Test method and parameters The AC voltage test was carried out according to the Sub-Clause 4 of the EN 61442 standard. This test was carried out on all accessories at ambient temperature. A power frequency voltage was applied for 5 minutes to the samples between conductor and screen. The test voltage was 4.5Uo=54 kV. No breakdown or flashover on the insulation shall occur. The test arrangement is shown on Photo 2. The test and measuring circuit can be seen on Figure 1.

1.2.2. Test results During the AC voltage test no breakdown of the insulation occurred.

1.3. Partial discharge measurement 1.3.1. Test method and parameters Partial discharge measurement was carried out according to the Clause 7 of the EN 61442 standard. This test was carried out at ambient temperature. The test voltage was raised to a prestress value which was identical to the power-frequency voltage test value of 2.5Uo=30 kV and it was maintained for 1 min. Then the voltage was decreased to a test voltage of 2Uo=24 kV and then to l.73U0=20 kV. The maximum permissible partial discharge level shall not exceed 10 pC at the specified test voltage.


1.3.2. Test results The result of the partial discharge measurement described in 1.3.1.:

Partial discharge values f PCl

2Uo 1.73Uo

Line 1 3.2 1* Line2 3.2 1*

Line 3 3.2 1*

Line 4 9.5 7.5

*Basic disturbance level at same value

These values are lower than the maximum permissible value of I 0 pC.


TESTING LABORATORY

1.4. Impulse voltage test

1.4.1. Test method and parameters

No. 9742/VNL of21

The impulse voltage test was carried out according to the Clause 6 of the EN 61442 standard. This test was carried out at elevated temperature. This test was performed on the samples at a conductor temperature between 90°C-95°C (0 K to 5 K above the maximum conductor temperature in normal operation). The cable accessories shall withstand 10 impulses of 1.2/50 ll.S at test voltage of 125 kV peak on both polarities without breakdown and flashover. The test and measuring circuit can be seen on Figure 2.

1.4.2. Test results

The cable accessories withstood 10 impulses of 125 kV peak on both polarities without breakdown. The typical oscillograms of the test from each polarity are included in the test report.

1.5. Heating cycle voltage test

1.5.1. Test method and parameters A preliminary calibration on the test cable was performed to determine the actual conductor temperature during the test according to the Annex A of the EN 61442 standard. The Method 2 was used described in A.3.2 of the EN 61442 standard. The heating cycle voltage test was carried out according to the Clause 9 of the EN 61442 standard. The test lines were heated with a current, which flowed through the conductor. The cables were heated until the conductor reached the steady temperature between 90°C-95°C (0 K to 5 K) above the maximum conductor temperature in normal operation). The temperatures of cables were measured with thermocouples, which were put to the outer surface of the cables. The test lines were energized with a test voltage of 2.5U0=30 kV. The duration of heating cycles were 8 hours. The heating and the maintained periods were 5 hours, than these were followed by 3 hours of natural cooling in air. This cycle was carried out 63 times. After the 63rd cycle the joints were tested under water with height of 1 m above the top surface of all joints.

1.5.2. Test results During the heating cycles voltage test no breakdown of the insulation occurred.

1.6. Partial discharge measurement

1.6.1. Test method and parameters Partial discharge measurement was carried out according to the Clause 7 of the EN 61442 standard. This test was carried out at ambient and elevated temperature on the samples at a conductor temperature between 90°C-95°C (0 K to 5 K above the maximum conductor temperature in normal operation).

The test voltage was raised to a pre-stress value which was identical to the power-frequency voltage test value of 2.5Uo=30 kV and it was maintained for 1 min. Then the voltage was decreased to a test voltage of 2Uo=24 kV and then to 1.73U0=20 kV. The maximum permissible partial discharge level shall not exceed 10 pC at the specified test voltage.


VEIKJ-VNL ELECTRIC LARGE LA BORA TORIES Ltd.

TESTING LA BORA TORY

1.6.2. Test results

The result of the partial discharge measurement described in 1.6.1.:

Elevated temp. Partial discharge values f pCl

2Uo 1.73Uo

Line I 3.2 1*

Line2 3.2 1*

Line 3 3.2 1*

Line 4 9.5 7.5

Ambient temp. Partial discharge values [pCJ

2Uo l.73Uo

Line 1 3.2 1*

Line 2 3.2 1*

Line 3 3.2 1*

Line4 9.5 7.5

*Basic disturbance level at same value These values are lower than the maximum permissible value of I 0 pC.

1. 7. Impulse voltage test


No. 9742/VNL of21

The impulse voltage test was carried out according to the Clause 6 of the EN 61442 standard. This test was carried out at ambient temperature. The cable accessories shall withstand I 0 impulses of 1.2/50 /..lS at test voltage of 125 kV peak on both polarities without breakdown and flashover. The test arrangement is shown on Photo 2. The test and measuring circuit can be seen on Figure 2.

1.7.2. Test results The cable accessories withstood 10 impulses of 125 kV peak on both polarities without breakdown and flashover. The typical oscillograms of the test from each polarity are included in the test report.



The AC voltage test was carried out according to the Sub-Clause 4 of the EN 61442 standard. This test was carried out at ambient temperature. A power frequency voltage was applied for 15 minutes to the samples between conductor and screen. The test voltage was 2.5U0=30 kV. No breakdown or flashover on the insulation shall occur. The test arrangement is shown on Photo 2. The test and measuring circuit can be seen on Figure 1.

1.8.2. Test results

During the AC voltage test no breakdown of the insulation occurred.


TESTING LABORATORY

1.9. Examination

1.9.1. Test method and parameters After the tests the cable accessories were examined for information only about:

any cracking in the filling media and/or tape or tube components; and/or corrosion, tracking, erosion; and/or leakage of any insulating material ; moisture path bridging a primary seal.

1.9.2. Test results

No. 9742/VNL of21

After the tests the cable accessories were examined and it could established, that there were not any:

cracking in the filling media and/or tape or tube components; and/or corrosion, tracking, erosion; and/or leakage of any insulating material ; moisture path bridging a primary seal.

According to the test results described in 1.1.2-1.8.2 the heat shrinkable straight through joint Type 1CXLJ-24kV met the test requirements of the test sequence IB1 of the HD 629.1 S2 standard.

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TESTING LABORATORY

1.9. Examination


any cracking in the filling media and/or tape or tube components; and/or corrosion, tracking, erosion; and/or leakage of any insulating material; moisture path bridging a primary seal.

1.9.2. Test results

No. 9742/VNL Page 8 of21


cracking in the filling media and/or tape or tube components; and/or corrosion, tracking, erosion; and/or leakage of any insulating material; moisture path bridging a primary seal.

According to the test results described in 1.1.2-1.8.2 the heat shrinkable straight through joint Type JCXLJ-GT-24kV met the test requirements of the test sequence /Bl of the HD 629.1 S2 standard.


TESTING LABORATORY

2. Description of the tests according to the test sequence B2


Type tests were performed on three samples of heat shrinkable straight through joint for extruded insulation cables for rated voltage of 12/20 (24) kV according to the test sequence 82 of the Table 5 ofthe standard HD 629.1 S2.

The following test lines were prepared for the tests:

Lines 6-8: Indoor termination + XLPE insulated cable + straight through joint indoor termination + XLPE insulated cable + indoor termination

The following tests were performed on the samples:

Test clause Test sequence of Test of

EN 61442 HD 629.1 S2

1. DC voltage dry ( 15 min, 6Uo) 5 82 2. AC voltage dry (5 min, 4.5Uo) 4 82 3. Thennal short circuit (screen; 5 kA, 0.5 s) 10 82 4. Thermal short circuit (conductor; 16 kA, 1 s) 11 82 5. Impulse voltage at ambient temperature 6 82 6. AC voltage dry (15 min, 2.5Uo) 4 82 7. Examination - 82

2.1. DC voltage test 2.1.1. Test method and parameters The DC voltage test was carried out according to the Clause 5 of the EN 61442 standard. This test was carried out at ambient temperature. A DC voltage of negative polarity was applied for 15 minutes to the samples between conductor and screen. The test voltage was 6U0=72 kV. No breakdown or flashover on the insulation shall occur. The test object is shown on Photo 1, and the test arrangement is shown on Photo 2.


2.1.2. Test results During the DC voltage test no breakdown of the insulation occurred.


2.2.1. Test method and parameters The AC voltage test was carried out according to the Sub-Clause 4 of the EN 61442 standard. This test was carried out at ambient temperature. A power frequency voltage was applied for 5 minutes to the samples between conductor and screen. The test voltage was 4.5U0=54 kV. No breakdown or flashover on the insulation shall occur. The test arrangement is shown on Photo 2. The test and measuring circuit can be seen on Figure l.



TESTING LABORATORY

2.3. Thermal short-circuit test (screen) 2.3.1. Test method and parameters


The thermal short-circuit test on screen was carried out according to the Clause 10 of the EN 61442 standard. The cable conductor was heated and stabilized for 2 hours at a temperature of95 °C (5 °C above the maximum cable conductor temperature in normal operation). The temperature was measured by thennocouples attached on the conductor and on the extemal surface of the control cable. Two short-circuits were applied to the screen. The short-circuit current was specified by the manufacturer (Isc = 2.5 kA with a duration oft = I s). Between the two short-circuits the cable screen cooled to a temperature less than 10 K above its temperature prior to the first short-circuit. The arrangement of the test loop is shown on Photo 3. The pre-heating as well the short-circuit test and measuring circuits can be seen on Figure 5.

2.3.2. Test results During the tests, during the evaluation of the oscillograms and during the visual inspection breakage, deterioration or damage could not be observed on the tested conductors and their insulation.

There was no any breakage or discoloration of the screen.

The test circumstances, the parameters evaluated from the recorded oscillograms are collected in following table:

Parameters of thermal short-circuit tests on screen and conductor

Q) Highest current RMS value of

Duration Oscillogram (/} the A.C. Joule-integral ro peak of short-circuit No. ..c component Remarks 0...

[kA] [kA] [ms] [(kAisJ

A 6.0 2.6 6.8 Short -circuit BHM 0106 B 4.4 2.6 1008 6.6 on screen

c 6.6 2.6 7.0 PASSED

Short-circuit BHM 0107 A 6.0 2.6 1008 6.8 on screen

PASSED

After the thermal short-circuit test deformation or failure of any component part did not occur.

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TESTING LABORATORY

2.4. Thermal short-circuit test (conductor)



The thermal short-circuit test on conductor was carried out according to the Clause 11 of the EN 61442 standard. This test was carried out in three-phase a.c test circuit. Two short-circuits were applied to the test lines. Between the two short-circuits the cable screen cooled to a temperature less than 10 K above its temperature prior to the first short-circuit.

The arrangement of the test loop is shown on Photo 4.

The test as well the measuring circuits can be seen on Figure 6.

The r.m.s. value of the short-circuit current and the duration was calculated by the following formula:

where

is the r.m.s. value of the short-circuit current (A)

t is the duration (s)

S is the conductor cross-sectional area (mm2)

Osc is the permissible short-circuit conductor temperature (°C)

9, is the temperature at start of test (°C)

The necessary I2t is 522.6kA2s for heating from the ambient temperature to the final permissible temperature (250°C). The applied short-circuit current was 22.8 kA with duration of 1006 ms.

2.4.2. Test results During the tests, during the evaluation of the osci llograms and during the visual inspection breakage, deterioration or damage could not be observed on the tested conductors and their insulation.

There was no any breakage or discoloration of the screen.

The test circumstances, the parameters evaluated from the recorded oscillograms are collected in the following table:

Parameters of thermal short-circuit tests on screen and conductor

Highest current RMS value of

Duration Oscillogram Cl) f/) the A.C. Joule-integral co peak of short-circuit No. ..c

component Remarks P-.

[kA] [kA] [ms] [(kA)2s]

A 49.9 23.2 544.1 Short-circuit BHM 0109 B 37.0 22.4 1007 504.9 on conductor

c 53.0 22.8 525.5 PASSED A 51.2 23.5 554.6 Short-circuit

BHM 0110 B 37.2 23.4 1007 55 1.2 on conductor c 52.9 23.2 540.2 PASSED

After the thermal short-circuit test deformation or failure of any component part did not occur.

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TESTING LABORATORY

2.4.3. Recorded quantities taken during the short-circuit tests

No. 9742NNL Page 12 of21

The test and measuring circuits are shown in Figures 5-6. The test parameters evaluated from the oscillograms are collected in Tables above. The pre-heating as well as the short-circuit tests were carried out with 50 Hz frequency. During the test oscillograms were taken. The current and phasevoltage were recorded by transient recorder with sampling rate of 50 1-LS.

The meanings of the symbols on the enclosed oscillograms are the following: lA short-circuit current flowed through in phase Ll of the test object Is short-circuit current flowed through in phase L2 of the test object Ic short-circuit current flowed through in phase L3 of the test object

2.5. Impulse voltage test 2.5.1. Test method and parameters

The impulse voltage test was carried out according to the Clause 6 of the EN 61442 standard. This test was carried out at ambient temperature. The cable accessories shall withstand 10 impulses of 1.2/50 1-LS at test voltage of 125 kV peak on both polarities without breakdown and flashover. The test arrangement is shown on Photo 2.

2.5.2. Test results

The cable accessories withstood 10 impulses of 125 kV peak on both polarities without breakdown. The typical oscillograms of the test from each polarity are included in the test report.

2.6. AC voltage test 2.6.1. Test method and parameters The AC voltage test was carried out according to the Sub-Clause 4 of the EN 61442 standard. This test was carried out at ambient temperature. A power frequency voltage was applied for 15 minutes to the samples between conductor and screen. The test voltage was 2.5Uo=30 kV. No breakdown or flashover on the insulation shall occur. The test arrangement is shown on Photo 2.


2.7. Examination


any cracking in the filling media and/or tape or tube components; and/or corrosion, tracking, erosion; and/or leakage of any insulating material; moisture path bridging a primary seal.

2.7.2. Test results


cracking in the filling media and/or tape or tube components; and/or corrosion, tracking, erosion; and/or leakage of any insulating material; moisture path bridging a primary seal.

According to the test results described in 2.1.2-2.6.2 the heat shrinkable straight through joint Type 1CXLJ-GT-24kV met the type test requirements of the referred standard according to test sequence A2.

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TESTING LABORATORY

3. Uncertainty of the measurements Voltage measurement during d.c. voltage test: Temperature measurement during heating cycle voltage test: Current measurement during heating cycle voltage test: Voltage measurement during heating cycle voltage test: Impulse voltage measurement: Partial discharge measurement: Voltage measurement during power-frequency tests: Uncertainty of short-circuit current measurement: Voltage measurement: Current measurement: Temperature measurement:


±1.00% ±2.oooc ±0.20% ±1.00% ±2.00 % ±l.OOpC ±1.00% ±0.20% ±0.30 % ±0.60% ±2.oooc

The uncertainty value given in this report is the standard deviation value multiplied by k=2. Measurement uncertainty was estimated according to the method described in the EA-4/02 document.

4. Measuring devices used for the tests:

Designation Manufacturer Type SIN Voltage divider VEIKI TA-l 01

Termination DR. STRAUSS TERM75 974/2010 Impulse voltage measuring DR STRAUSS TR-AS 200- 972/2010

system 12

Voltage divider TUR MCF

859840 120/ 150P

Termination TUR H 90 890708 Meter HIGH VOLT MU 15 880019

AC Dielectric Test Set HIPOTRONICS 775-20A5-K 16955848 Current transformer (2000 N5 A) Transzvill Zrt. ASM-0 009/509/99

Closing Shunt ( 5 A - 150 m V) GANZ S-2 -Data logger FLUKE

HYDRA 8989019

2620A Voltage divider TUR MCF 135/200 865131

Termination TUR H 90 861901 Meter Power Diagnostix HV Compact 072

Coupling capacitor MICAFIL TEM60 77N15199 77N15200

Partial discharge measuring TETTEX 9124 ox 133528 equipment

Transient recorder VEIKI-VNL Kft. VoNaL Vfl VFOOO 1-VF0008

DCM-R l 201 0-RC-001/2010-

Rogowski IU-001 /1

Rogowski 3D-Motion Control 201 0-RC-002/201 0-Coil I DCM

A,B,C Engineering Ltd. R l Secondary

IU-001 /2 201 0-RC-003/201 0-

Converter IU-001/3

VD / A,B,C 1kV/ lOOV VEIKI R-C-R 21,22,23


TESTING LABORATORY (

CB1

Tr1 10 I 3 kV

F1

M

G

F2

C82

Tr2 1 I 200 kV

Tr1; Tr2 Transformers CB l ; CB2 Circuit breakers FI ; F2 Reactors M Motor G Generator YO Voltage divider Term Termination VM Voltmeter

Figure 1 Test and measuring circuit for power frequency test

No. 9742NNL Page 14 of21

r

Gimp

YO


TESTING LABORATORY

----.-----0.4 kV 50Hz

Test object Measuring sys tem

Impulse generator MICAFIL SH 11-24

Voltage divider

Term Termination Measuring system Dr. Strauss

Figure 2 Test and measuring circuit for lightning impulse test


VEIKI-VNL ELECTRlC LARGE LABORATORIES Ltd.

Trl; Tr2 CBl ; CB2 Fl; F2 M G D VD Term VM

TESTING LABORATORY

Test <JO;ett

Trl 10 I 3 kV

F1

c

F2 .

C82

Tr2 1 I 200 kV

D

Transformers Circuit breakers Reactors Motor Generator Rectifier Voltage divider Termination Voltmeter

Figure 3 Test and measuring circuit for DC voltage test


r


TESTING LABORATORY

400V /230V 50Hz

Test object

Kl

T1

230V/0-230V

T2

380V/50-70V

T3

100000V/220V

Tl; T2; T3 Kl VD Term VM Cc

Transformers Circuit breaker Voltage divider Termination Voltmeter Coupling capacitor

PO Measuring

system

PD Partial discharge measuring system

Figure 4 Test and measuring circuit for PD measurement


Sz02, Sz03

F0-1 , F2, F3

Tr2, Tr3, Tr4

R3


No. 9742/VNL Page 18 of21 TESTING LABORATORY

-~,.___-~---- 120 kV

F3 (used for pre-heating only)

R3

I

,_-- -· Test object

UAo lA Uso Ia Ll::o lc

l l l l l l VoNaL Vtl

Transient recorder [I)

regulating transformers VoNaL Vfl

reactors Rogowski

short-circuit transformers VD

resistor T3, T4

K4 Figure 5

Sz0 3

Sz02

F0-1

K4

Tr 2 120 / 10.5 kV

T3

F2

Tr4 19.05/ 10.5 kV

Tr 3 10.5/ 0.52 kV

Rogowski [2] lA • 18 · l c

VD [3] UAO • l.Jso · lto

transient recorder

current measuring system

voltage dividers

making switches

protective circuit-breaker

Test and measuring circuit for thermal short-circuit tests on cable screen

Sz02, Sz03

F0-1 , F2, F3

Tr2, Tr3

R3


TESTING LABORATORY

_...,...,...,..___..--____ 120 kV

Sz03

Sz02

F0- 1

K4

Tr 2 120 I 10.5 kV

T4

F2

R3

F3

Tr 3 10.5/ 0.520 kV

Rogowski [2] lA , 18 . lc

I ._-- _, VD [3) UAO • l..lao • Llco Test object

UAo lA uno Ia ll::o lc

l l l l l l VoNaL Vfl

Transient recorder [I]

regulating transformers VoNaL Vfl

reactors Rogowski

short-circuit transformers VD

resistor T3, T4

K4 Figure 6

-

No. 9742NNL Pagel9of2l

transient recorder

current measuring system

voltage dividers

making switches

protective circuit-breaker

Test and measuring circuit for thermal short-circuit tests on cable cores

(

VEIKJ-VNL ELECTRIC LARGE LABORATORIES Ltd.

TESTING LABORATORY

PHOTOS

Photo 1 The test object

Photo 2 Test arrangement for dielectric tests



TESTING LABORATORY

Photo 3 Test arrangement for short circuit test on the screen

Photo 4 Test arrangement for short circuit test on cable cores


125kV

113k6

88k'i I

63kV

~

! i I

38~

I I I

l I

13lV -·-:

0

~MS/s

~ ,

-~ .... ,_

20 .0~5

'"'-e

40.0~5 60.0~5 80.0~5 100~5

No.: 55372 CH1 No. Eval.: Up= beta= T1= T2=

55372 Ll 125kV 1.3% 21JS 55.21JS

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Rated voltage U01U (Um):

Construction:

Conductors:

Insulation:

Insulation screen:

Metallic screen :

Armour:

Overs heath:

Water blocking, if any:

Diameters:

Cable marking:

-27-

Annex A (informative)

Identification of test cable (see 5.1)

kV

HD 629.1 S2:2006

~ 1-core 0 3-core D Individually screened

0 Overall screen

rR1 AI Dcu

~Stranded 0 Solid

I2S Circular D Shaped

D 120 mm 2 D 150 mm2 I8J 185 mm2

Other cross-section: mm 2

~ XLPE

D EPR D HEPR

18] Bonded D Strippable

~Wire D Tape D Extruded

Dwire D Tape

D PVC l8J PE (state type) f.tDPE.

D Within conductor @Under oversheath

• Conductor mm

• Insulation mm

• Insulation screen

• Oversheath

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Heat Shrinkable Cable Joints

Installation Procedure

Straight Through Joint for

1 Core, 24kV, XLPE Insulated Screened Cables

C:,RE:MTE:~ Protective Sleeve Solutions 1 CXLJ-GT-24kV

Date of Issue No. of Pages Issue No./ Revision Verified & Approved by - Head Design

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General Instructions

•Use a yellow bushy flame. Do not use pencil type flame. Use the yellow portion of flame for shrinking.

•Direct the flame of the L P gas torch or blow lamp in shrink direction.

•Keep the flame moving in a brush like motion to avoid scorching of the tubes and other shrinkable parts.

•Ensure that each heat shrinkable component is shrunk uniformly and free from wrinkles.

•A well shrunk tube has inner profile of the substrate clearly defined.

•Allow joint to cool before applying mechanical strain.

•Recommended dimensional tolerances for cable preparation is± Smm maximum.

1. Overlap the cables to be jointed by about 200mm and mark a reference line at the centre of the overlap.

2. Remove the outer sheath , copper tape, semi-conductive layer and XLPE insulation as per dimensions given in the table below. If the cable has an aluminium laminated screen, carefully make two 40mm long cuts in the sheath go• to each other on both cables as shown.

Range (mm2) A(mm) X(mm)

35-95 2201 60 95-185 230 60 185-240 250 80 300-630 300 80

800-1000 320 80

Cable with copper wire screen

Cu. Wire Screen

Cable with Aluminium laminated screen

L Max. Connector Length

Y2 connector length + 5mm 11 0 130 140

Y2 connector length + 1 Omm 240 250

1---- A ----to--- -- A - --- 1

2b. Carefully push the serrated earthing clip under the cable jacket making sure not to damage the semi-con layer below. Once in position using a wire binder, tighten the cable jacket onto the serrated earthing clip.

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3. Clean the outer sheath of the cables on both sides and slide corrosion protection tube over one side and the nested tubes over the other side of cable. Protect the tubes from dust and direct sun light.

Nested Set of Tubes

• I 4. Join the conductors using an approved method. If using mechanical connectors, ensure the bolts shear

level or below the body line . Using a Solvent wipe de-grease the XLPE insulation. However do not use the wipes on the insulation after using them on the connector.

• I 5. Stretching the stress grading mastic to half its width apply it over the exposed conductor and connectors, level

up with the insulation, overlapping on to XLPE insulation by 15mm on either side. If using mechanical connectors ensure the sheared bolt holes are filled.

Stretching to 1/4th its width apply small stress grading mastic strip over the semi-con cut, overlapping the

6. Pull out the stress control tube from the set of nested tubes and position it centrally over the connector to overlap the semi-con screen equally on both sides. Start shrinking from the centre, allow the stress grading mastic to soften and settle down. Proceed to shrink the rest of tube when the tube has a wrinkle free profile over the connector.

Stress Control Tube

7. Position the red connector insulation tube centrally over the shrunk stress control tube and shrink in place starting at the centre and proceed towards the ends.

Connector insulation Tube

8. Position the Dual Wall tube (Black/Red) centrally over the shrunk stress control tube and shrink in place starting at the centre and proceed towards the ends.

Dual Wall Tube

9. Apply black mastic around the core butting against and overlapping the shrunk tubes by 20mm on both sides.

Black Mastic------...

1 0. Starting from exposed semi-con at one side wrap tinned copper wire mesh with 50% overlap around the core continue over the joint and finish at the other side of semi-con. Tighten the wire mesh firmly over the semi-con screen.

Tinned Copper Wire Mesh

Cables with copper wire screens:

11 a Bunch the copper screen wires and twist them together to form a round compact conductor on both sides. Join the screen wires using an approved connector,

12a Abrade or rough the outer sheath for about 1 OOmm on each side.

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11 11111111 .......... .......... 111111 1 111

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Cables with Aluminium laminated screen:

11 b Fold the earth braids back across the joint. Using an approved connector join the two earth braids together.

Tinned Copper Earth Braid

12a Abrade or rough the outer sheath for about 1 OOmm on each side.

All Cables

13. Apply black mastic around the ends of outer sheath, covering all the sharp edges of metal and extend the mastic over outer sheath by 20mm.

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14. Slide and position the corrosion protection tube centrally over the joint so that it overlaps the cable 150mm on either side. Start shrinking tube from the center and proceed towards the ends.

I Corrosion Protection Tube I

Allow the joint to cool before applying mechanical strain .

TYPE TEST CERTIFICATE OF COMPLETE TYPE TEST

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