Industry Overview
To verify insulation, electrical strength, thermal stability, mechanical performance and operational reliability of HV switchgear in accordance with IEC / ANSI standards.
| Test Object (Tested Object) | Test Items | European Standard (IEC) | American Standard (ANSI/IEEE) |
| High-voltage circuit breaker | Routine test (appearance, dimension, contact resistance, mechanical operation & timing, insulation resistance) | IEC 62271-100 | ANSI C37.04 |
| Type test (temperature rise, short-time withstand current, peak withstand current, mechanical endurance) | IEC 62271-100 | ANSI C37.04 | |
| Dielectric test (power-frequency AC withstand voltage, induced overvoltage, lightning impulse withstand voltage) | IEC 62271-100 | ANSI C37.06 | |
| Disconnecting switch / Earthing switch | Mechanical operation test, mechanical endurance test | IEC 62271-102 | ANSI C37.30 |
| Dielectric withstand test (AC & impulse) | IEC 62271-102 | ANSI C37.30 | |
| Contact resistance measurement | IEC 62271-102 | ANSI C37.30 | |
| Gas-insulated switchgear (GIS) | Gas tightness test (SF6 leakage measurement) | IEC 62271-203 | ANSI C37.122 |
| Partial discharge test (PD test) | IEC 62271-203 | IEEE C37.122 | |
| Main circuit insulation test, auxiliary circuit insulation test | IEC 62271-203 | ANSI C37.122 | |
| High-voltage instrument transformers (Current transformer / Voltage transformer) | Accuracy class test (ratio error, phase displacement) | IEC 61869 | ANSI C57.13 (CT)ANSI C57.12 (VT) |
| Insulation dielectric test (AC, lightning impulse) | IEC 61869-1 | IEEE C57.13 | |
| Temperature rise test | IEC 61869-1 | ANSI C57.13 | |
| Air-insulated switchgear (AIS) / Switchgear assemblies | Temperature rise test | IEC 62271-1 | ANSI C37.20.1 |
| Short-circuit withstand test (dynamic & thermal stability) | IEC 62271-1 | ANSI C37.04 | |
| Auxiliary and control circuits test | IEC 62271-1 | ANSI C37.20.1 | |
| Vacuum interrupter | Vacuum degree check, withstand voltage test | IEC 62271-100 Annex | IEEE C37.09 |
| Mechanical life test | IEC 62271-100 | ANSI C37.06 | |
| Busbar assemblies & connection parts | Contact resistance test, temperature rise test | IEC 62271-1 | ANSI C37.20.1 |
| Dielectric withstand test | IEC 62271-1 | ANSI C37.20.1 | |
| Control & protection panels | Insulation test of control circuits | IEC 62271-1 | ANSI C37.20.1 |
| Functional test of protection & interlock | IEC 62271-1 | IEEE C37.20.2 |
Applicable scene
- Outdoor Earthing Switch
- GIS
- VCB
- Tank SF6 Circuit Breaker
Equipment selection
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ZC-430D-20kv High voltage insulation resistance tester
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ZC-500 Power frequency withstand voltage tester
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ZCVF-6000kVA/1000kV Variable Frequency Resonant Test System
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ZC-302E Loop Resistance Tester
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ZC-300C Circuit Breaker Tester
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ZC-313 Vacuum switch vacuum degree tester
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ZC-316B SF6 Gas Leak Detector
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ZC-311 SF6 Dew Point Tester
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ZC-310 SF6 density relay tester
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ZC-318 SF6 gas comprehensive tester
