Single-core power cable. 18/30 (36) kv Conductor material 1x630 mm 2 Insulation material. HES HACILAR ELEKTRİK SAN. VE TİC. A.Ş.

Transcription

1 TIC TYPE TEST CERTIFICATE OF COMPLETE TYPE TESTSS OBJECT TYPE Single-core power cable N2XSYR(A)Y Rated voltage, U 0/U (U m) Conductor cross-section 18/30 (36) kv Conductor material 1x630 mm 2 Insulation material Cu XLPE MANUFACTURER CLIENT TESTED BY DATE OF TESTS HES HACILAR ELEKTRİK SAN. VE TİC. A.Ş., Kayseri, Turkey HES HACILAR ELEKTRİK SAN. VE TİC. A.Ş., Kayseri, Turkey KEMA HIGH-VOLTAGE LABORATORY Arnhem, the Netherlands 7 May to 17 August 2012 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 IEC 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 pages 4 and 5. 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 35 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, 4 February 2013

2 -2- TIC TABLE OF CONTENTS TABLE OF CONTENTS Identification of the test object Description of the test object List of documents General information The tests were witnessed by The tests were carried out by Subcontracting Purpose of the test Measurement uncertainty Applicable standards Electrical type tests General Tests at elevated conductor temperature Bending test followed by a partial discharge test Bending test Partial discharge test Tan δ measurement Heating cycle test followed by a partial discharge test Heating cycle test Partial discharge test Impulse test followed by a voltage test Impulse test Voltage test Voltage test for 4 hours Resistivity of semi-conducting screens Non-electrical type tests Measurement of thickness of insulation Measurement of thickness of non-metallic sheaths Tests for determining the mechanical properties of the insulation before and after ageing Tests for determining the mechanical properties of non-metallic sheaths before and after ageing Additional ageing test on pieces of completed cable Loss of mass test on PVC sheaths of type ST Pressure test at high temperature on non-metallic sheaths Test on PVC insulation and sheaths at low temperatures Test for resistance of PVC insulation and sheaths to cracking (heat shock test)...28

3 -3- TIC Hot set test for XLPE insulation Water absorption test on insulation Flame spread test on single cables Shrinkage test for XLPE insulation Verification of cable construction...33 APPENDIX A MEASUREMENT UNCERTAINTIES APPENDIX B MANUFACTURER S DRAWING(S)/DATA SHEET... 35

4 -4- TIC IDENTIFICATION OF THE TEST OBJECT 1.1 Description of the test object Manufacturer HES HACILAR ELEKTRİK SAN. VE TİC. A.Ş., Kayseri, Turkey Type N2XSYR(A)Y Year of manufacture 2012 Sampling procedure by the manufacturer Quantity submitted 50 m Rated voltage, U 0 /U (U m ) 18/30 (36) kv No. of cores (core identification) 1 Marking on the cable HES (N)2XSYR(A)Y 1x630RM/35mm 2 18/30 kv IEC Conductor - material copper - cross-section 630 mm 2 - nominal diameter 30 mm - type stranded and compacted - maximum conductor temperature 90 C in normal operation Conductor screen - material semi-conducting XLPE - nominal thickness 0,6 mm - material designation LE manufacturer Borealis Insulation - material XLPE - nominal thickness 8,0 mm - material designation 4201 R - manufacturer Borealis Insulation screen - material semi-conducting XLPE - strippable no - nominal thickness 0,6 mm - material designation LE manufacturer Borealis

5 -5- TIC Metallic screen - material copper - number and nominal diameter of wires 96 wires of Ø 0,66 mm - nominal thickness and width of tape 20 x 0,1 mm - nominal thickness/diameter Ø 0,51 mm Binder/Filling material Inner / Separation sheath - material PVC (Y), type ST 2 - nominal thickness 1,6 mm - material supplier HES CABLE Compound (for s-pvc resin was supplied by Petkim) Metallic armour - material aluminium wires - number and nominal diameter of wires 68 wires of Ø 2,5 mm - nominal thickness and width of tape 60 x 0,1 mm - material supplier HES Copper and Aluminum Production Plant Oversheath - material PVC (Y), type ST 2 - nominal thickness 3,0 mm - nominal overall diameter of cable 65 ± 2 mm - manufacturer HES CABLE Compound (for s-pvc resin was supplied by Petkim) - colour red Longitudinally watertightness - along insulation screen not claimed - along the conductor not claimed Fire retardant (IEC ) yes

6 -6- TIC List of documents The manufacturer has guaranteed that the object submitted for tests has been manufactured in accordance with the following document. KEMA has verified that this document adequately represents the object tested. The following document is included in this Certificate: drawing no./ document no. revision date title (N)2XSYR(A)Y 1X /30 KV 2 20/10/2012 -

7 -7- TIC GENERAL INFORMATION 2.1 The tests were witnessed by The tests were not witnessed. 2.2 The tests were carried out by Name Mr. S. Smeenk Mr. B. Peters Mr. J. Stankovic Company KEMA Nederland B.V., Arnhem, the Netherlands 2.3 Subcontracting The following tests were subcontracted to DNV KEMA Cleaner Energy Generation: - measurement of resistivity of semi conducting screens in accordance with clause of IEC non-electrical type tests in accordance with clause 19 of IEC , with exception of water penetration test - verification of cable construction in accordance with clauses 5-14 of IEC Purpose of the test Purpose of the test was to verify whether the material complies with the specified requirements. 2.5 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. 2.6 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.

8 -8- TIC ELECTRICAL TYPE TESTS 3.1 General Tests at elevated conductor temperature For the tests with the cable at elevated temperature, a reference loop for temperature control of the conductor was installed. The reference cable was cut from the total cable length submitted by the client intended for the type test. This reference loop was installed close to the main loop in order to create the same environmental conditions as for the test loop. The heating currents in both the reference loop and the test loop were kept equal at all times, thus the conductor temperature of the reference loop is representative for the conductor temperature of the test loop. All three phases of both the reference loop and the test loop carried the same level three-phase current. Annex A, method 1 of IEC was used as a guide.

9 -9- TIC Bending test followed by a partial discharge test Bending test Standard IEC , clause Test date 7 May 2012 Environmental conditions Ambient temperature 15 C Temperature of test object 15 C Characteristic test data Bending diameter: Three core cable ( others ) 15(d + D) ± 5% measured outer diameter of cable D (mm) measured diameter of cable conductor d (mm) required bending diameter D r (m) 65 29,9 1,80 D r 1,99 1,80 diameter of test cylinder D t (m) Procedure The test sample shall be bent around a test cylinder at ambient temperature for at least one complete turn. It shall then be unwound and repeated, except that the sample shall be bent in the reverse direction without axial rotation. This cycle of operation shall be carried out three times. Observation The test was carried out successfully.

10 -10- TIC Partial discharge test Standard IEC , clause Test date 24 May 2012 Environmental conditions Ambient temperature 21 C Temperature of test object 21 C Characteristic test data Circuit direct Calibration 5 pc Noise 1 pc Sensitivity 2 pc Required sensitivity 5 pc Bandwidth khz Test frequency 50 Hz Coupling capacitor 2600 pf core voltage applied, 50 Hz duration partial discharge level... x U 0 (kv) (s) (pc) , ,73 31,1 - not detectable , ,73 31,1 - not detectable , ,73 31,1 - not detectable Requirement There shall be no detectable discharge exceeding the declared sensitivity from the test object at 1,73U 0.

11 -11- TIC Tan δ measurement Standard IEC , clause Test date 25 May 2012 Environmental conditions Ambient temperature 20 C Temperature of test object 20 C Characteristic test data Length of test object 13,39 m Standard capacitor 100 pf core voltage applied, 50 Hz core capacitance 1) tan δ (kv) (µf/km) 1 4, ,56 x ) for information only Requirement The measured value shall not be higher than 40x10-4.

12 -12- TIC Heating cycle test followed by a partial discharge test Heating cycle test Standard IEC , clause Test period 29 May to 10 June 2012 Environmental conditions Ambient temperature C Characteristic test data Stabilized temperature 97 C no. of heating cycles required stable conductor temperature heating current during stable condition heating per cycle cooling per cycle ( C) (A) total duration (h) duration of conductor at stable temperature (h) total duration (h) approx Procedure The heating cycles duration shall be at least 8 h. The conductor temperature shall be maintained within the stated temperature limits for at least 2 h of each heating period. This shall be followed by at least 3 h of natural cooling in air to a conductor temperature within 10 K of the ambient temperature. Observation The test was carried out successfully.

13 -13- TIC Partial discharge test Standard IEC , clause Test date 14 June 2012 Environmental conditions Ambient temperature 21 C Temperature of test object 21 C Characteristic test data Circuit direct Calibration 5 pc Noise 2 pc Sensitivity 4 pc Required sensitivity 5 pc Bandwidth khz Test frequency 50 Hz Coupling capacitor 2600 pf core voltage applied, 50 Hz duration partial discharge level... x U 0 (kv) (s) (pc) , ,73 31,1 - not detectable , ,73 31,1 - not detectable , ,73 31,1 - not detectable Requirement There shall be no detectable discharge exceeding the declared sensitivity from the test object at 1,73U 0.

14 -14- TIC Impulse test followed by a voltage test Impulse test Standard IEC , clause Test date 14 June 2012 Environmental conditions Ambient temperature 20 C Temperature of test object 20 C Characteristic test data Specified test voltage 170 kv testing arrangement polarity voltage applied (% of test voltage) no. of impulses see figure voltage earthed applied to conductors metallic positive (2,30 / 42,1 µs) screens and 4 conductors metallic negative (2,30 / 42,1 µs) screens and 8 Note The three cable cores were tested simultaneously. Requirement Each core of the cable shall withstand without failure 10 positive and 10 negative voltage impulses.

15 -15- TIC

16 -16- TIC

17 -17- TIC Voltage test Standard IEC , clause Test date 15 June 2012 Environmental conditions Ambient temperature 20 C Temperature of test object 20 C testing arrangement voltage applied, 50 Hz duration voltage applied to earth connected to xu 0 (kv) (min) conductors metallic screens 3, Note The three cable cores were tested simultaneously. Requirement No breakdown of the insulation shall occur.

18 -18- TIC Voltage test for 4 hours Standard IEC , clause Test date 14 June 2012 Environmental conditions Ambient temperature 20 C Temperature of test object 20 C testing arrangement voltage applied, 50 Hz voltage applied to earth connected to xu 0 (kv) (h) conductors metallic screens duration Note The three cable cores were tested simultaneously. Requirement No breakdown of the insulation shall occur.

19 -19- TIC Resistivity of semi-conducting screens Standard IEC , clause Test period 17 July 2012 Characteristic test data Temperature during ageing 100 ± 2 C Duration 7 days Resistivity measured at 90 C conductor screen - without ageing Ωm after ageing Ωm insulation screen - without ageing Ωm after ageing Ωm Note The measurement of resistivity shall be at a temperature within ± 2 C of the maximum conductor temperature in normal operation.

20 -20- TIC NON-ELECTRICAL TYPE TESTS 4.1 Measurement of thickness of insulation Standard IEC , clause 19.1 Test date 27 July 2012 insulation thickness unit requirement specified measured/determined - nominal mm - 8,0 - average mm - 8,02 - minimum (t min ) mm 7,10 7,35 - maximum (t max ) mm - 8,32 - (t max - t min ) / t max 0,15 0,12

21 -21- TIC Measurement of thickness of non-metallic sheaths Standard IEC , clause 19.2 Test date 27 July 2012 Separation sheath thickness unit requirement calculated measured/determined - nominal mm 1,6 1,6 - average mm - - 2,90 - minimum (t min ) mm 1,08-2,67 Oversheath thickness unit requirement specified measured/determined - nominal mm 3,00 3,00 - average mm - - 3,18 - minimum (t min ) mm 2,45-2,86 Note The nominal thickness of the separation sheath is calculated according to clause and Annex A of IEC

22 -22- TIC Tests for determining the mechanical properties of the insulation before and after ageing Standard IEC , clause 19.3 Test period 15 and 16 August 2012 Characteristic test data Temperature during ageing 100 ± 2 C Duration 7 days without ageing - tensile strength N/mm² 12,5 31,4 - elongation % after ageing - tensile strength N/mm² - 28,2 - variation with samples without ageing % ± 25 max elongation % variation with samples without ageing % ± 25 max. 9

23 -23- TIC Tests for determining the mechanical properties of non-metallic sheaths before and after ageing Standard IEC , clause 19.4 Test period 15 to 17 August 2012 Characteristic test data Temperature during ageing 135 ± 3 C Duration 7 days Inner sheath/separation sheath without ageing - tensile strength N/mm² 12,5 28,2 - elongation % after ageing - tensile strength N/mm² 12,5 24,4 - variation with samples without ageing % ± 25 max elongation % variation with samples without ageing % ± 25 max. 8 Oversheath without ageing - tensile strength N/mm² 12,5 22,4 - elongation % after ageing - tensile strength N/mm² 12,5 20,5 - variation with samples without ageing % ± 25 max elongation % variation with samples without ageing % ± 25 max. -10

24 -24- TIC Additional ageing test on pieces of completed cable Standard IEC , clause 19.5 Test period 15 to 17 August 2012 Characteristic test data Temperature during ageing 100 ± 2 C Duration 7 days Insulation - tensile strength N/mm² - 32,0 - variation with samples without ageing % ± 25 max. 2 - elongation % variation with samples without ageing % ± 25 max. 19 Inner sheath/separation sheath - tensile strength N/mm² 12,5 29,9 - variation with samples without ageing % ± 25 max. 6 - elongation % variation with samples without ageing % ± 25 max. 3 Oversheath - tensile strength N/mm² 12,5 22,4 - variation with samples without ageing % ± 25 max. 0 - elongation % variation with samples without ageing % ± 25 max. -2

25 -25- TIC Loss of mass test on PVC sheaths of type ST 2 Standard IEC , clause 19.6 Test period 13 August 2012 Characteristic test data Temperature during ageing 100 ± 2 C Duration 7 days Inner sheath/separation sheath - loss of mass mg/cm 2 1,5 0,5 Oversheath - loss of mass mg/cm 2 1,5 0,5

26 -26- TIC Pressure test at high temperature on non-metallic sheaths Standard IEC , clause 19.7 Test date 16 and 17 August 2012 Characteristic test data (PVC insulation) Temperature 90 ± 2 C Duration 6 h Load 11 N Inner sheath/separation sheath - depth of indentation % max Characteristic test data (oversheath) Temperature 90 ± 2 C Duration 6 h Load 13 N Oversheath - depth of indentation % 50 21

27 -27- TIC Test on PVC insulation and sheaths at low temperatures Standard IEC , clause 19.8 Test date 27 July to 8 August 2012 Characteristic test data (separation sheath) Temperature -15 ± 2 C Cooling time 16 h Mass of hammer 1500 g Inner sheath/separation sheath - elongation % cold impact test - no cracks no cracks Characteristic test data (oversheath) Temperature -15 ± 2 C Cooling time 16 h Mass of hammer 1500 g Oversheath - elongation % cold impact test - no cracks no cracks

28 -28- TIC Test for resistance of PVC insulation and sheaths to cracking (heat shock test) Standard IEC , clause 19.9 Test date 16 August 2012 Characteristic test data (inner-/separation sheath) Temperature 150 ± 3 C Duration 1 h Diameter of mandrel 6 mm Number of turns Inner sheath/separation sheath - soundness - no cracks no cracks Characteristic test data (oversheath) Temperature 150 ± 3 C Duration 1 h Diameter of mandrel 6 mm Number of turns Oversheath - soundness - no cracks no cracks

29 -29- TIC Hot set test for XLPE insulation Standard IEC , clause Test date 14 August 2012 Characteristic test data Air temperature 200 ± 3 C Time under load 15 min Mechanical stress 20 N/cm 2 - elongation under load % permanent elongation % 15-3

30 -30- TIC Water absorption test on insulation Standard IEC , clause Test period 22 June to 12 July 2012 Characteristic test data Temperature 85 ± 2 C Duration 14 days - variation of mass mg/cm 2 1 0,06

31 -31- TIC Flame spread test on single cables Standard IEC , clause and IEC Test date 15 August 2012 Characteristic test data Duration 4 min - length free of charring mm > downward limit charred surface mm <

32 -32- TIC Shrinkage test for XLPE insulation Standard IEC , clause Test date 12 July 2012 Characteristic test data Temperature 130 ± 3 C Duration 1 h - shrinkage % 4 2

33 -33- TIC VERIFICATION OF CABLE CONSTRUCTION Verification of cable construction was carried out in accordance with clauses 5-14 of IEC The results are presented below. item unit requirement specified measured/ determined conductor - diameter of conductor mm 33, ,25 - number of wires diameter of wires mm - 4,05 - resistance at 20 C Ω/km 0,0283 0,0283 observed/determined construction - copper conductor Ø 30,25 mm; number wires conductor screen Ø 32,30 mm; thickness 0,62 mm - insulation Ø 48,70 mm; thickness 8,02 mm - insulation screen Ø 49,75 mm; thickness 0,56 mm - semi conductive tape - copper wire screen number wires 96; Ø 0,66 mm - copper tape - tape - inner sheath Ø 56,75 mm; thickness 2,90 mm - aluminium wire armour number wires 68; Ø 2,50 mm - tape - outer sheath Ø 67,5 mm; 3,18 mm outer diameter of the cable, average (mm) Ø 67,50 outer diameter of the core, average (mm) Ø 49,75 No significant deviations from the specified requirements were found.

34 -34- TIC APPENDIX A MEASUREMENT UNCERTAINTIES The measurement uncertainties in the results presented are as specified below unless otherwise indicated. measurement measurement uncertainty dielectric tests and impulse current tests: peak value 3% time parameters 10% capacitance measurement 0,3% tan δ measurement ± 0,5% ± 5 x 10-5 partial discharge measurement: < 10 pc 2 pc 10 to 100 pc 5 pc > 100 pc 20% measurement of impedance AC-resistance measurement 1% measurement of losses 1% measurement of insulation resistance 10% measurement of DC resistance: 1 to 5 µω 1% 5 to 10 µω 0,5% 10 to 200 µω 0,2% radio interference test 2 db calibration of current transformers 2,2 x 10-4 I i /I u and 290 µrad calibration of voltage transformers 1,6 x 10-4 U i /U u and 510 µrad measurement of conductivity 5% measurement of temperature: -50 to -40 C 3 K -40 to125 C 2 K 125 to 150 C 3 K tensile test 1% sound level measurement type 1 meter as per IEC and ANSI S1,4,1971 measurement of voltage ratio 0,1%

35 -35- TIC APPENDIX B MANUFACTURER S DRAWING(S)/DATA SHEET