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2008000711D CNAS L026
(2009)NO JBL100
Quality Inspection and Test Center for
Equipment of Electric Power
INSPECTION REPORT
Address: No 143 Luyu Road, Hongshan District, Wuhan City, Hubei Province
Post code: 430074
Tel: 4006565689
Fax: (027)59839810
Website: www.china-qitc.com
E-mail: [email protected]
Quality Inspection and Test Center for Equipment of Electric Power
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(2009)NO JBL100
1. Client: Nanyang Jinguan Electric Co., Ltd.
2. Sample Introduction
Name: Porcelain Housed Metal Oxide Surge Arrester without Gap for 500kV AC
System
Type: Y20W-444/1063W,
Manufacturer: Nanyang Jinguan Electric Co., Ltd.
Sampling Method: Sending samples
Sample Quantity: MOV 3 pieces (S1S3)
Proportion Unit 16 pieces (R1R3, L1L6, O1O3,T1T4)
MOV type: 115/42*21mm
3.Test Standard
GB11032-2000 Metal Oxide Surge Arrester without Gap for AC
System
Q/JG017-2000 Technical Specification for Metal Oxide Surge
Arrester without Gap for AC System
4. Test Classification: Periodic test
5. Test Date: May 11, 2009Oct. 10, 2010
6. Validity of Test Report: 3 years since the issued date
7. Conclusion: The test results of four periodic test items for Y20W-444/1063W Porcelain Housed Metal Oxide Surge Arrester without Gap for AC
System send by Nanyang Jinguan Electric Co., Ltd. are all Eligible according to
GB11032-2000.
Tested by: Tang Lin, Jia Jinzhao, Chen Li
Checked by: Li Ze
Verified by: Wang Yang
Approved by: Huang Yumin Position: Director
Date: Oct. 16, 2009
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Quality Inspection and Test Center for Equipment of Electric Power (2009) Jian Zi No. JBL 100
8. Test items and Result
Table for Periodic Test Items and Results
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SerielNo.
Test Items StandardRequirement
TestResult
Evaluation
1 ResidualVoltageTest
Lightning ImpulseResidual Voltage Test
1063kV 1063kV Eligible
Steep Current
Residual Voltage Test
1190kV 1159kV Eligible
Switching ImpulseResidual Voltage Test
872kV 850kV Eligible
2 Long-
duration
Current
Impulse
Withstand
Test
Line Discharge Test Class 5 linedischarge
Class 5line
dischargeCurrent:1154A1162ATime:
3450s
Eligible
Rectangular WaveImpulse CurrentWithstand Test
2000s,2500A,18times
2060s,25402552A
Eligible
34 OperatingDuty Test
Artificial acceleratedaging test
115,1000h
Kct(max)=0.68
Eligible
Switching ImpulseOperation Duty Test
Pass thespecified
procedureswitchingimpulse
operating duty
test, 2 timeslong- duration
currentimpulse energynoted shouldbe not less
than 14.0kJ/kV
Actualenergy
noted23.04kJ/kV
Eligible
4 Power Frequency Voltage WithstandTime Characteristic Test
Supply PowerFrequencyVoltageWithstand
TimeCharacteristicunder voltage
range 1.20U*R
1.0U*R, andtimerange:0.1S20min
1.20U*R0.2S
Eligible
1.15U*R1.1S
1.10U*R30S
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1.00U*R1200S
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Quality Inspection and Test Center for Equipment of Electric Power (2009) Jian Zi No. JBL 100
9. Test Value
1) Residual Voltage Test
Testing samples: 3 pieces proportion units ( R1R3)
Standard requirements:a. measure lightning impulse current residual voltage value
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under 8/20s10kA,20kA,40kA, multiply proportion ratio, convert the
whole surge arrester residual voltage, take the maximum residual
voltage and then draw residual voltage with the current relation
curve. The residual voltage related 20kA is defined as lightning
residual voltage of the surge arrester, which should not be largerthan 1063kV.
b. measure steep wave impulse current residual voltage value
under 1/5s 20kA, multiply proportion ratio, convert the whole surge
arrester residual voltage, the maximum value is defined as steep
wave impulse residual voltage of the surge arrester, which should
not be large than 1190kV.
c. measure switching impulse current residual voltage value
under 30/80s 2kA, multiply proportion ratio, convert the whole surge
arrester residual voltage for, the maximum value is defined as
switching impulse residual voltage of the surge arrester, which
should not be large than 872kV.
Conclusion: Residual Voltage level is eligible as per the standard requirements. Test
value see in Table1Table3. Test wave see in diagram 1 3.
Table 1 Test data for lightning impulse residual voltage
Sample R1 R2 R3
DC1mA reference
voltage U1mA DC, kV
4.20. 4.20 4.20
Sample rated voltageUsr, kVr.m.s.
3.12 3.12 3.12
Sample Continuousoperation voltageUsc, kVr.m.s.
2.28 2.28 2.28
Sampleresidualvoltage,kV
8/20s10kA
6.64 6.67 6.69
8/20s20kA
7.36 7.34 7.34
8/20s
40kA
7.90 7.84 7.85
Whole piece surgearrester DC1mAreference voltageU1mA DC, kV
597U1mA.DC6.06
Convertto whole
piecesurgearresterresidual
voltage,
Proportionratio
144.3 144.3 144.3
8/20s10kA
958.1 962.4 965.3
8/20s20kA
1062 1059 1059
8/20s 1140 1131 1133
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kV 40kAEquivalentlightningimpulseresidualvoltageunder20kAU20kA
1063
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Quality Inspection and Test Center for Equipment of Electric Power (2009) Jian Zi No. JBL 100
Diagram 1 Lightning Impulse Residual Voltage Wave DiagramSample R1, Voltage ratio of voltage divider Kct=66.93,
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Current divider resistance Rs=0.008022
Table 2 Test data for steep wave impulse residual voltage
Sample R1 R2 R3
DC1mA referencevoltage U1mA. DC, kV
4.20. 4.20 4.20
Sample rated voltageUsr, kVr.m.s.
3.12 3.12 3.12
Sample Continuousoperation voltageUsc, kVr.m.s.
2.28 2.28 2.28
Sampleresidualvoltage,kV
1/5s20kA
7.90 8.03 8.03
Whole piece surgearrester DC1mAreference voltageU1mA.DC, kV
597U1mA.DC606
Convertto whole
piecesurgearresterresidualvoltage,
kV
Proportionratio
144.3 144.3 144.3
1/5s20kA
1140 1159 1159
Maximumsteepwave
impulseresidualvoltageunder20kA
1159
Diagram 2 Steep
Wave Impulse Residual Voltage Wave Diagram
Sample R2, Voltage ratio of voltage divider Kct=65.81,
Current divider resistance Rs=0.004034
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Quality Inspection and Test Center for Equipment of Electric Power (2009) Jian Zi No. JBL 100
Table 3 Test data for switching impulse residual voltage
Sample R1 R2 R3
DC1mA referencevoltage U1mA.DC, kV
4.20. 4.20 4.20
Sample rated voltageUsr, kVr.m.s.
3.12 3.12 3.12
Sample Continuousoperation voltageUsc, kVr.m.s.
2.28 2.28 2.28
Sample
residualvoltage,
30/80s
2kA
5.83 5.84 5.89
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kV
Whole piece surgearrester DC1mAreference voltageU1mADC, kV
597U1mA. DC606
Convertto whole
piecesurgearresterresidualvoltage,kV
Proportionratio
144.3 144.3 144.3
30/80s2kA
841.2 842.6 849.8
Maximumswitchingimpulseresidualvoltageunder 2kA
850
Diagram 3 Switching Impulse Residual Voltage Wave Diagram
Sample R3, Voltage ratio of voltage divider Kct=66.93,
Current divider resistance Rs=0.008022
2. Long-duration Current Impulse Withstand Test
2.1 Line Discharge test
Sample: 3 pieces proportion units (L1L3)
Standard requirement: 3 pieces proportion units should pass class 5 line discharge
test
Conclusion: All of 3 pieces proportion have passed class 5 line discharge test, the
test result are eligible as per the standard requirements. Test results see in table 4, and
test wave see in diagram 4.
Table 4 test data for class 5 line discharge
Sample L1 L2 L3
Measuringresidualvoltage,
before test
U1mA.DC, kV 8.30 8.37 8.33
8/20s U20kA,kV 14.72 14.70 14.72
30/80s U500A, kV 11.03 11.09 11.04
Calculating
data
Sample rated voltage UR,
kV
6.17 6.22 6.20
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Ures, kV 11.03
Line charging voltage UL,kV
2.4UR=14.82
Line wave impedance Z, 0.5UR=3.09Current peakvalue apparentcontinuous
time T0.9, s
Requireddata
3200
Actualdata
3450
Required energy absorb W,kJ
W=Ures*(UL-Ures)*1/Z*T=11.03*(14.81-11.03) /3.09*3200=43.18
1st discharge Current, A 1154 1162 1162
Voltage, kV 11.42 11.54 11.54
Energy, kJ 45.47 46.26 46.26
18th
discharge
Current, A 1162 1154 1162
Voltage, kV 11.54 11.42 11.54Energy, kJ 46.26 45.47 46.26
Measuringresidualvoltage,
after test
Standard requirement U20kA 5%8/20s U20kA,kV 14.76 14.77 14.79U20kA change rate, % +0.27 +0.48 +0.48
Samplecheckingafter test
Standard requirement Should not be puncture, no flashover, no damageon samples
Checking result No puncture, no flashover, no damage on samples
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Quality Inspection and Test Center for Equipment of Electric Power (2009) Jian Zi No. JBL 100
Table 4 test data for class 5 line discharge
Sample L1 L2 L3
Measuringresidualvoltage ,
before test
U1mA DC, kV 8.30 8.37 8.33
8/20s U20Ka,kV 14.72 14.70 14.72
30/80s U500A, kV 11.03 11.09 11.04
Calculating
data
Sample rated voltage UR,
kV
6.17 6.22 6.20
Ures, kV 11.03
Line charging voltage UL,kV
2.4UR=14.82
Line wave impedanceZ, 0.5UR=3.09Current
peak valueapparentcontinuoustime T0.9,
s
Required data 3200
Actual data 3450
Required energy absorb W,kJ
W=Ures*(UL-Ures)*1/Z*T=11.03*(14.81-11.03)
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/ 3.09*3200=43.18Firstdischarge
Current, A 1154 1162 1162
Voltage, kV 11.42 11.54 11.54
Energy, kJ 45.47 46.26 46.26
18th
dischargeCurrent, A 1162 1154 1162
Voltage, kV 11.54 11.42 11.54
Energy, kJ 46.26 45.47 46.26
Measuringresidualvoltage ,after test
Standard requirement U20kA 5%8/20s U20Ka,kV 14.76 14.77 14.79U20kA change rate, % +0.27 +0.48 +0.48
Samplecheckingafter test
Standard requirement Should not be puncture, no flashover, no damageon samples
Checking result No puncture, no flashover, no damage on samples
Diagram 4 Class 5 Line Discharge Test Sample L1, first time,
Current divider resistance Rs=0.04645 Voltage ratio of voltage divider Ks=297.5
2.2 Rectangular Wave Impulse Current Test
Sample: 3 pieces proportion units (L4L6)
Standard requirement: 3 pieces proportion units should pass 2000s,
2500A(enterprise standard requirement), 18 times rectangular wave impulse current
test.
Conclusion: All of 3 pieces proportion have passed test, the test result are eligible
as per the standard requirements. Test results see in table 5, and test wave see in
diagram 5.
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Sheet 6 Artificial Accelerating Ageing Test
Item Samples NumberS1 S2 S3
DC 1mA referencevoltage U1mA DC, kV
4.20 4.20 4.20
Applying powerfrequency voltage,kVr.m.s.
2.82 2.82 2.82
Chargeability, % 95.0 95.0 95.0
Power loss 2hours/P1ct, W
7.49 7.23 7.47
Power loss1000(+48)hours/P2ct,W
4.84 4.82 5.10
P1ct,/P2ct 0.64 0.67 0.68
Ageing coefficient ofzinc oxide varistorsKct(max)
1.0
Remark: (1) because of Kct1.0, so applying rated voltage Usr and continuous operatingvoltage Usc when switching impulse action load test.
(2) Temperature of zinc oxide varistors: 115+/-4
3.2 Switching Impulse Action Load Test
Sheet 7 Switching Impulse Action Load Test
Sample O1 O2 O3DC 1mA referencevoltage U1mA DC, kV
4.14 4.15 4.13
Rated voltage Usr,kVr.m.s.
3.08 3.08 3.08
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Continuous operatingvoltage Usc, kVr.m.s.
2.46 2.46 2.46
Ageing coefficient Kct
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after test
Samples check No puncture, no flashover, no thermal breakdown and otherdamage phenomenon.
Picture 6 Prepare test sample O1, transformation ratio Ks=100
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Picture 7: high current impulse, sample O1(second), divert shunt resistance Rs=0.001580
Picture 8: square wave impulse,sample O1(first), divert shunt resistance Rs=0.04645 voltage
divider ratio Ks=297.5
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Picture 9: switching impulse action load, sample O1, transformation ratio Ks=100
4. Power frequency voltage withstand time characteristics test
Sample: 4pcs scale units(T1~T4)
Standard: 4pcs scale units should pass required power frequency voltage withstand time
characteristics test.
Test results: 4pcs passed power frequency withstand time characteristics test, the results accord
with standard, please refer to sheet 8 for detailed test data. Please refer to picture 10~picture 12
for wave form of tests.
Sheet 8 Power Frequency Voltage Withstand Time Characteristics Test Data
Sample T1 T2 T3 T4
DC 1mAreferencevoltage U1mA, DC,kV
4.12 4.12 4.12 4.12
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Sample rated voltage Usr, kVr.m.s 3.06 3.06 3.06 3.06
Sample continuous operating voltage Usc,kVr.m.s
2.24 2.24 2.24 2.24
Aging coefficient of zinc oxide varistor, Kct
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secondlong-durationcurrentimpulse
Applyingpowerfrequencyvoltage andlasting time
ApplyingvoltagekVr.m.s.
3.67 3.52 3.37 3.06
U*srmultipl
e
1.20 1.15 1.10 1.00
Withstandtime, s
0.2 1.1 30 1200
U*sc,kVr.m.s
2.24 2.24 2.24 2.24
Lastingtime,min
30 30 30 30
Samples cooling Cooling to 20+/-15
Residualvoltageafter test
Standards U20KA5%
8/20 s, U20KA, KV 7.32 7.32 7.38 7.29
Residual voltagechange ratio beforetest and after test, %
+0.83 +0.96 +1.09
+0.55
Samples check Samples no puncture, noflashover, no thermal breakdownand no other damagephenomenon.
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Picture 10: power frequency voltage withstand time characteristics sample
T1,1.20U*R,0.2S,Transformation ratio Ks=100
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Picture 11: power frequency voltage withstand time characteristics sample T2, 1.15U*R, 1.10s,
transformation ratio Ks=100
Picture 12: power frequency voltage withstand time characteristics sample T3, 1.10U*R, 30s,
transformation ratio Ks=100
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Annex A. List of Test Equipments
Rated voltage Ur: 444kV Continuous operating voltage Uc: 324kV
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Normal discharge current In:20kA Lightning impulse residual voltage Ures: 1063kV
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No.
Name/type No. Inspection Scale
Accuracy
Assay/correctingmechanism
Valid Date
1 8/20us
implusecurrentmakingequipment
BL0
23
0-40kA / Quality inspection and
test center for equipmentof electric power test
report
2010-05-09
2 1/5usimplusecurrentmakingequipment
BL026
0~20kA / Quality inspection andtest center for equipment
of electric power testreport
2010-05-15
3 30/80usimplusecurrentmakingequipment
BL023
0~4kA / Quality inspection andtest center for equipment
of electric power testreport
2010-05-20
54 4/10 us highcurrentimplusemakingequipment
BL025
0~150kA / Quality inspection andtest center for equipment
of electric power testreport
2010-05-13
5 Longdurationimplusecurrentmakingequipemnt
BL024
0~3000A / Quality inspection andtest center for equipment
of electric power testreport
2010-05-24
6 DCreferencevoltagetesting
equipment
0100 0~8kV Class1
National high-voltagemetering station
2010-05-28
7 LCD-4resistancecurrenttestingequipment
008 0~10mA 3% National high-voltagemetering station
2010-04-02
8 TDS2014oscillograph
C043996
0-300V 2% Hubei province meteringand measurement
technology researchinstitute
2010-05-25
9 HAEFELY64M peakvaluevoltagemeter
080452-24-88
0-1600V Class1
National high-voltagemetering station
2010-06-01
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