Independent, accredited testing station Member laboratory of STL and LOVAG

Transcription

1 Independent, accredited testing station Member laboratory of STL and LOVAG TYPE TEST REPORT NO HES Hacilar Elektrik Sanayi ve Ticaret A.Ş. Erciyes Mah. HES Cad. No: Kayseri TURKEY CLIENT HES Hacilar Elektrik Sanayi ve Ticaret A.Ş. MANUFACTURER Medium voltage cross-linked PE (SLPE) insulated power cable TEST OBJECT YXC7V-R (N2XSY) 1x35/16 mm² 20.3/35 kv TYPE Test sample SERIAL NO. Rated voltage Max. operating voltage Uo/Um Um 20.3/35 42 kv kv RATED CHARACTERISTICS GIVEN BY THE CLIENT IEC : NORMATIVE DOCUMENT Type tests on cable RANGE OF TESTS PERFORMED May 2009 to July 2009 DATE OF TEST The tests have been PASSED. TEST RESULT H. ZINNBAUER Head of Centre of Competence High-Power/High-Voltage Berlin, 21 October 2009 G. BROSE Test engineer in charge 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. Institut Prüffeld für elektrische Hochleistungstechnik GmbH (IPH Berlin) is a subsidiary of CESI S.p.A, Milan.

2 TYPE TEST REPORT NO SHEET 2 Contents Sheet 1. Present at the test Place of test Identity of test object Type tests, electrical on the cable Partial discharge test at ambient temperature Bending test followed by a partial discharge test Tan δ measurement at 5 C to 10 C above the maximum conductor temperature Heating cycle test followed by a partial discharge test Lightning impulse voltage test at a maximum conductor temperature ranging from 95 C to 100 C Power-frequency voltage test for 4 h Resistivity of semi-conducting screens before and after the ageing treatment Type tests, non-electrical on the cable Measurement of thicknesses and check of cable construction Tests for determining the mechanical properties of the insulation before and after ageing Tests for determining the mechanical properties of the PVC oversheath before and after ageing Ageing tests on pieces of complete cables to check compatibility of materials Loss of mass test on PVC oversheath of type ST Pressure test at high temperature on the PVC oversheath Test on sheath at low temperature Test for resistance of PVC sheath to cracking (heat shock test) Hot set test for XLPE insulations Water absorption test on insulation Flame spread test on single cables Shrinkage test for XLPE insulation Sketches/Drawings/Data sheet Photo This test document consists of 28 sheets. Distribution Copy No. 1 Copy No. 1 in English: HES Hacilar Elektrik Sanayi ve Ticaret A.Ş. The test results relate only to the object tested. This document is confidential. Its transfer to third parties as well as its reproduction in extracts require the consent of the client.

3 TYPE TEST REPORT NO SHEET 3 1. Present at the test Mr. Brose IPH test engineer in charge 2. Place of test IPH, High-voltage test laboratory, test bay no. 1, test bay no. 3, high-voltage hall no Identity of test object The tests were carried out on a cable sample with markings of manufacturer and year of manufacture as follows: HES YXC7V-R 1x35/16 mm² 20.3/35 kv TSEK 22/03/ TEDAS. Construction, please see attached sketch.

4 TYPE TEST REPORT NO SHEET 4 4. Type tests, electrical on the cable Tests performed a) Partial discharge (PD) test b) Bending test followed by a partial discharge test c) Tan δ measurement at 5 C to 10 C above the maximum conductor temperature d) Heating cycle test followed by a partial discharge test at ambient temperature e) Lightning impulse test at elevated maximum conductor temperature followed by a voltage test f) Power-frequency voltage test for 4 h g) Resistivity of semi-conducting screens

5 TYPE TEST REPORT NO SHEET Partial discharge test at ambient temperature Normative document IEC : , Sub-clause Test and measuring circuits Technical data of test circuit Test transformer: Rated voltage 125 kv Rated power 100 kva Rated frequency 50 Hz Damping resistance 0.67 kohm Technical data of measuring circuit Meas. point Measured quantity Measuring sensor/device Technical parameters 1 Test voltage Capacitive divider with MU11 (TuRD) peak voltmeter Ratio Partial discharge level - Coupling capacitor - CPL 542A quatripole (mtronix) MPD 540 PD measuring system (mtronix) - Calibrator of Cal 542 type (mtronix) C k = 1 nf Output 10 pc Z s C-T. HE HE E PTr C k Z m PO 2 1 E PTr Z s C k Z m Supply Test transformer with variable transformer connected in series Blocking impedance Coupling capacitor Measuring impedance Capacitive divider Auxiliary sealing end C-T. HE 1, 2 Measuring points PO Test object

6 TYPE TEST REPORT NO SHEET 6 Measured values The calibration was at 5 pc. Test voltage in kv 2xUo ) 1.73xU 0 = 35.2 Noise level in pc PD initiation in kv PD at test voltage in pc PD interruption in kv Required sensitivity in pc 1 pc pc - 5 pc 1) Measured value during 2Uo 40.6 for 10 sec. 4.2 Bending test followed by a partial discharge test Normative document IEC : , Sub-clause The test was carried out at IPH. The cable sample with a length of more than 10 m was three times bended around a test cylinder and unwound in each direction around the required test diameter at ambient temperature.. For this, each sample part was bend and afterwards unwound and again bend and unwound in the opposite direction. Required test parameters The bending diameter was calculated using the equation D 20 (d + D) 5 %. D = cable diameter d = conductor diameter Bending diameter Chosen diameter in mm in mm in mm in mm Partial discharge test at ambient temperature after bending test Technical data of measurement circuit See Sub-clause 4.1 Measured values The calibration was at 5 pc. Test voltage in kv 2xUo ) 1.73xU 0 = 35.2 Noise level PD initiation in pc in kv 1 pc - PD at test voltage in pc 1.2 pc also PD interruption in kv Required sensitivity in pc - 5 pc 1) Measured value during 2Uo 40.6 for 10 sec.

7 TYPE TEST REPORT NO SHEET Tan δ measurement at 5 C to 10 C above the maximum conductor temperature Normative document IEC : , Sub-clause Test and measuring circuits Technical data of test circuit Test transformer: Rated voltage 100 kv Rated power 100 kva Rated frequency 50 Hz Technical data of measuring circuit Measured quantity Measuring sensor/device Technical parameters Test voltage Tan δ Standard capacitor HV divider (Haefely) Inv. No /6, Cal. No MU11 peak voltmeter (TUR Dresden) MWB measuring bridge Cal. No Compressed gas capacitor Cal. No C = pf Dummy T Tr C-T. P PO tan C Tr High-voltage test transformer with variable transformer C-T. Capacitive divider P Peak voltmeter PO Test object C Standard capacitor tan tan- measuring bridge HT Heating transformer T Temperature measurement HT Measured values Test temperature: 95 C to 100 C Test voltage Measured tan δ tan δ required 3 kv 10.3 x x 10-4

8 TYPE TEST REPORT NO SHEET Heating cycle test followed by a partial discharge test Normative document IEC : , Sub-clause Test and measuring circuits Dummy T PO S HT PO Test object S Copper screen H T Heating transformers T Temperature measurement Number of cycles: 20 Minimum 5-hours heating period, minimum 3-hours natural cooling Test temperature: 95 C to 100 C at the conductor The test set-up was subjected to 20 heating cycles. During the cyclic load, the cable was heated to a minimum conductor temperature ranging from 95 C to maximum 100 C. The temperature was maintained constant for 2 hours. Subsequently, the cable was naturally cooled during 3 hours. The conductor temperature was continuously checked at the dummy. Partial discharge test at ambient temperature after heating cycle Technical data of measurement circuit See Sub-clause 4.1 Measured values The calibration was at 5 pc. Test voltage in kv 2xUo ) 1.73xU 0 = 35.2 Noise level PD initiation in pc in kv 1 pc - PD at test voltage in pc 1.2 pc also PD interruption in kv Required sensitivity in pc - 5 pc 1) Measured value during 2Uo 40.6 for 10 sec.

9 TYPE TEST REPORT NO SHEET Lightning impulse voltage test at a maximum conductor temperature ranging from 95 C to 100 C The test circuit was heated to a conductor temperature of (95+5) C. After the conductor temperature had stabilized at least 2 h, a lightning impulse voltage test according to IEC and IEC was carried out, i.e. the test circuit was subjected to 10 impulses of each polarity, U p = 190 kv (2.62/49.6 μs). Normative document IEC : , Sub-clause Impulse voltage test at high temperature followed by a voltage test Technical data of test circuit Impulse circuit: Number of stages n = 2 Impulse capacitance C S = 70 nf Loading capacitance C B = 1.5 nf Damping resistance R D = 130 Discharge resistance R E = 1100 Technical data of measuring circuit Measuring point Measured quantity Measuring sensor/device Technical parameters 1 Test voltage R divider of SMR 10/770 type (TuRD) with digital measuring instrument of DMI 551 type (Haefely) and TDS 220 digital oscilloscope (made by Tektronix) Ratio Gl ZFS + / - T Dummy PO ~ 1 C S R E R D C B HT Gl Rectifier C B Loading capacitance C S Impulse capacitance PO Test object ZFS Spark gap 1 Measuring point R E Discharge resistance HT Heating transformers R D Damping resistance T Temperature measurement

10 TYPE TEST REPORT NO SHEET 10 Measured values Test voltage U p in kv 190 Lightning impulse voltage, positive polarity Lightning impulse voltage, negative polarity Number of impulses x 10 x 10 Result No disruptive, no discharge Power-frequency voltage test during the cooling Test voltage AC 71 kv for 15 min. No breakdown was occurred.

11 TYPE TEST REPORT NO SHEET Power-frequency voltage test for 4 h Normative document IEC : , Sub-clause Test and measuring circuits Technical data of test circuit Single-phase AC voltage source Test transformer: Rated voltage 125 kv Rated power 100 kva Rated frequency 50 Hz Damping resistance 0.67 kohm Technical data of measuring circuit Measuring point Measured quantity Measuring sensor/device Technical parameters 1 Test voltage Capacitive divider with MU11 (TuRD) peak voltmeter Ratio 864 R D E PTr PO P E PTr R D P PO Supply Test transformer with variable transformer connected in series Damping resistance Peak voltmeter Test object Power-frequency voltage test Test voltage AC 81.2 kv for 4 h

12 TYPE TEST REPORT NO SHEET Resistivity of semi-conducting screens before and after the ageing treatment Normative document IEC : , Sub-clause Test arrangement As described in IEC , Annex C Test equipment and measuring instruments Heating cabinet No. 18 for ageing treatment, calibration No Heating cabinet No. 21 for measurement, calibration No DC voltage supply HP E 3610A, Inv. No /01 Multimeter Fluke 8050A Inv. No /02, calibration No Measured values Semi-conducting screen Resistance in Ohm m Before ageing After ageing at 100 C Requirement Inner Outer

13 TYPE TEST REPORT NO SHEET Type tests, non-electrical on the cable Test performed a) Measurement of thicknesses and check of cable construction b) Tests for determining the mechanical properties of insulation before and after ageing c) Tests for determining the mechanical properties of the PVC oversheath before and after ageing d) Ageing tests on cables to check compatibility of materials e) Loss of mass test on PVC sheaths of type ST 2 f) Pressure test at high temperature on sheath g) Test on sheath at low temperature h) Test for resistance of PVC sheath to cracking (heat shock test) i) Hot set test for XLPE insulations j) Water absorption test on insulation k) Flame spread test on single cables l) Shrinkage test for XLPE insulation

14 TYPE TEST REPORT NO SHEET Measurement of thicknesses and check of cable construction Normative document IEC : , Sub-clauses 19.1, 19.2 Measuring instruments Profile projector PVC oversheath Marking HES YXC7V-R 1x35/16 mm² 20.3/35 kv TSEK 22/03/ TEDAS Colour Red Material PVC Diameter mm Thickness mm Measured values Required nominal value by IEC Without 2.0 Required nominal value by manufacturer 34 ± Measured average value Measured minimum value Required minimum value by IEC Without 1.61 Tape Measured values Nominal values Number of tapes 1 No data Width x thickness mm 60 x 0.05 No data Overlap mm 8 No data Copper screen Measured values Nominal values given by manufacturer Wires Diameter over screen mm 29 Approx Number of wires Diameter of wires mm Copper helix Number of tapes 1 1 Width x thickness mm 10 x x 0.1 Cross section inclusive copper helix mm² 16.3 Min. 16

15 TYPE TEST REPORT NO SHEET 15 Semi conductive tape Measured values Nominal values Number of tapes 1 No data Width x thickness mm 50 x 0.2 No data Overlap 0 No data Dimension of core Measuring instruments Profile projector inventory No /01 with calibration disk, inventory No /01 Outer semi-conducting screen Diameter in mm Thickness in mm Measured values Nominal value required by manufacturer Minimum measured value Average Maximum measured value XLPE insulation Diameter in mm Thickness in mm Measured values Nominal value required by manufacturer Approx Minimum value to IEC Minimum measured value Average measured value Centricity Requirement Inner semi-conducting screen Diameter in mm Thickness in mm Measured values Nominal value required by manufacturer Minimum value required by manufacturer Average measured value

16 TYPE TEST REPORT NO SHEET 16 Stranded copper conductor Measured values Required values by IEC Diameter measured value 7.17 mm 7.01 mm -- Diameter average value 7.09 mm Min. 6.6 mm Max. 7.5 mm Number of core conductors 7 7 Conductor resistance Normative document IEC : ; IEC Measured values at ambient temperature Measured value Ω/km at 20 C Max. permissible value Ω/km at 20 C

17 TYPE TEST REPORT NO SHEET Tests for determining the mechanical properties of the insulation before and after ageing Type of compound: XLPE Normative documents IEC : , Sub-clause 19.3 Testing device Tensile test machine Zwick Z 1435, heating cabinet No. 4 Measured values before ageing Sample No. Tensile strength in N/mm² Elongation at break in % Median Requirements Min Min. 200 Measured values after ageing treatment Treatment: 135 C, 7 days Sample No. Tensile strength in N/mm² Elongation at break in % Median Measured variation 6.3 % 7.1 % Requirements Max. 25 % Max. 25 %

18 TYPE TEST REPORT NO SHEET Tests for determining the mechanical properties of the PVC oversheath before and after ageing Type of compound: ST 2 Normative documents IEC : , Sub-clause 19.4 Testing device Tensile test machine Zwick Z 1435, heating cabinet No. 14 Measured values before ageing Sample No. Tensile strength in N/mm² Elongation at break in % Median Requirements Min % Min. 150 % Measured values after ageing treatment Treatment: 100 C, 7 days Sample No. Tensile strength in N/mm² Elongation at break in % Median Requirements Min Min. 150 Variation -6.0 % 15.8 % Requirements Max. 25 % Max. 25 %

19 TYPE TEST REPORT NO SHEET Ageing tests on pieces of complete cables to check compatibility of materials Normative document IEC : , Sub-clause 19.5 Testing device Tensile test machine Zwick Z 1435, heating cabinet No. 13 XLPE insulation Treatment: 100 C, 7 x 24 h Sample No. Tensile strength in N/mm² Elongation at break in % Median Variation -9.5 % -5.8 % Requirements Max. 25 % Max. 25 % PVC oversheath Treatment: 100 C, 7 x 24 h Sample No. Tensile strength in N/mm² Elongation at break in % , Median Variation -9.5 % -5.8 % Requirements Max. 25 % Max. 25 %

20 TYPE TEST REPORT NO SHEET Loss of mass test on PVC oversheath of type ST 2 Normative document IEC : , Sub-clause 19.6 Testing device Laboratory balance, heating cabinet No. 4 Treatment: 100 C, 7 days Sample Loss of mass mg/cm² Requirement mg/cm² Pressure test at high temperature on the PVC oversheath Type of compound: ST 2 Normative documents IEC : , Sub-clause 19.7 Testing device Heating cabinet No. 21, measuring projector Treatment: 90 C, 6 h Sample No. Thickness of sheath Engaged depth mm mm % Requirements None None Max. 50

21 TYPE TEST REPORT NO SHEET Test on sheath at low temperature Type of compound: ST 2 Normative documents IEC : , Sub-clause 19.7 Testing device Cooling chamber, elongation test machine Treatment: -15 C Sample No. Length pre elongation Length after elongation mm mm % Requirements Test for resistance of PVC sheath to cracking (heat shock test) Type of compound: ST 2 Normative documents IEC : , Sub-clause 19.9 Testing device Heating cabinet No. 22 Treatment: 150 C, 1 h None cracks were seen.

22 TYPE TEST REPORT NO SHEET Hot set test for XLPE insulations Normative documents IEC : , Sub-clause Test temperature 200 C Testing device Heating cabinet No. 21, length measurement system (for example a steel measuring tape) Measured values Treatment: 200 C, 15 minutes, 5 minutes Sample No. Elongation under load Permanent elongation after cooling in % in % Requirements Max. 175 Max. 15

23 TYPE TEST REPORT NO SHEET Water absorption test on insulation Type of compound: XLPE Normative document IEC : , Sub-clause Testing device Low-pressure oven No. 30, laboratory balance, inventory No. 1132/05 Measured values Sample No. Weight M1 of dry pieces Weight M2 of wet pieces Weight M3 of dry pieces Area Result cm² mg/cm² Requirement mg/cm² < Flame spread test on single cables Type of compound: ST 2 Normative document IEC : , Sub-clause Testing device As described in IEC The PVC sheathed cable sample has PASSED the test.

24 TYPE TEST REPORT NO SHEET Shrinkage test for XLPE insulation Normative document IEC : , Sub-clause Testing device Oven No. 21, steel tape measure Measured values Sample No. Distance before ageing mm Distance after cooling mm Result Requirement % % Max. 4

25 TYPE TEST REPORT NO SHEET Sketches/Drawings/Data sheet OUTER SHEATH POLYESTER TAPE COPPER TAPE SCREEN (COPPER WIRES) SEMI CONDUCTIVE TAPE INSULATION SCREEN(XLPE) INSULATION (XLPE) CONDUCTOR COPPER CONDUCTOR Figure 1: Sketch of the tested cable

26 TYPE TEST REPORT NO SHEET 26 MEDIUM VOLTAGE CROSS-LINKED PE (XLPE) INSULATED POWER CABLE 1x35/16 mm GENERAL - Producer : HES HACILAR ELEKTRİK SAN. VE TİC. A.Ş. - Cable Code : YXC7V-R (YE3SV)-N2XSY - Aplied Standards : IEC Rated Voltage (U0/Um) (kv) : 20.3/35 - Max. Operating Voltage (Um) (kv) : STRUCTURAL PROPERTIES 2.1 CONDUCTOR. Type : Compacted Conductor. Material : Annealed Electroltyic Copper. Cross-sectional Area (mm²) : 1x35/16. Number of Wires : 7. Type of Stranding : Circular. Outer Diameter of Strand (max) (mm) : 7,0 2.2 INNER SEMICONDUCTING SCREEN. Material : Semiconductive XLPE. Nominal Thickness (mm) : 0,6. Minimum Thickness (mm) : 0,3. Outer Diameter of Screen (Approx.) (mm) : 8,2 2.3 INSULATION. Material : XLPE. Nominal Thickness (mm) : 9,0. Minimum Thickness (mm) : 8,0. Outer Diameter of Insulatio (Approx.) (mm) : 26,2 2.4 OUTER SEMICONDUCTING SCREEN. Material : Semiconductive XLPE. Nominal Thickness (mm) : 0,6. Minimum Thickness (mm) : 0,3. Outer Diameter of Screen (Approx.) (mm) : 27,4 2.5 METALLIC SCREEN. Material : Copper. Type : Wire & Tape. Number & Diameter of Wires (mm) : 60x0.55. Number of Copper Tape & Dimensions (mm) : 1 - (0.1x10). Geometrical Area (mm²) : 16. Outer Diameter (Approx.) (mm) : 30,2 2.6 OUTER SHEATH. Material : PVC. Colour : Red. Nominal Thickness (mm) : 2,00. Minimum Thickness (mm) : 1,40.Outer Diameter of Cable (mm) : 34 ± 2 Figure 2: Data sheet of tested cable

27 TYPE TEST REPORT NO SHEET 27 Conductor temperature Sheath temperature Figure 3: Chart of heating cycle test

28 TYPE TEST REPORT NO SHEET Photo 35 mm² Figure 4: Cable samples after flame spread test