450kV 20kJ High Voltage Impulse Voltage Test System for Lighting Test
Impulse Voltage Test System is used for the full-wave and cut wave tests of standard lightning impulse voltages for power transformers, transformers, reactors, lightning rods, switches, bushings, insulators and other test products with voltage classes of 35kV and below.
Impulse voltage test system manufacturers rated parameter value
Rated nominal voltage：±450kV
Rated voltage：±150kV
Rated energy：20kJ
Total impulse capacitance：0.25μF
The total series： 3 series
Rated power capacity：1μF
The following waveforms can be generated when the load capacitance is 300~5000PF：
2±30%/50±20%μs Lightning impulse voltage full wave，The efficiency of voltage≥92%(no-load )
standard impulse voltage cut wave 2~6μs，The efficiency of voltage≥92%(no-load)
The impulsevoltage waveform parameters all meet the requirements of IEC and GB311-97 national standards
Class voltage within 10% ~ 99% rated voltage range, positive and negative synchronous range is not less than 20%.
Ignition range 10%～99%
Synchronous discharge rate out of control：＜2%
Minimum output voltage：≤10un
Charging voltage instability：≤±1.0%
Service duration: >, over 70% UN rated voltage, can operate continuously every 90 seconds. Under the rated voltage of < 70%="" un,="" charging="" and="" discharging="" once="" every="" 45="" seconds="" can="" run="">
Table 1 impulse voltage waveform and its parameters
| Impulse wave | Waveform parameter | Remark |
1 | Lightning impulse full wave Oscillating lightning impulse | Wave head time T1 Half peak time T2 Peak Up | Various test products |
2 | Lightning impulse cut wave | Wave head time T1 Cut off wave time Tc The zero coefficient K Peak Up | Various test products |
3 | Operational shock full wave Oscillating operational impulse | Wave head time Tp Half peak time T2 Peak Up | Various test products above 330 KV |
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