lightening arrester 500kvtest report english

8/9/2019 Lightening Arrester 500kVTest Report English

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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
mailto:[email protected]:[email protected]


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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


Switching ImpulseResidual Voltage Test


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



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



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


3.12 3.12 3.12


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,



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Table 3 Test data for switching impulse residual voltage

Sample R1 R2 R3

DC1mA referencevoltage U1mA.DC, kV

4.20. 4.20 4.20


3.12 3.12 3.12


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,


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



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


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


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



2010-05-20

54 4/10 us highcurrentimplusemakingequipment

BL025



2010-05-13

5 Longdurationimplusecurrentmakingequipemnt

BL024

0~3000A / Quality inspection andtest center for equipment


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

lightening arrester 500kvtest report english

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