Brief Description:
Impulse Voltage Test System is mainly used for carrying out full wave lightning impulse voltage test, chopping impulse test and switching impulse test on HV apparatus such as transformers, surge arrester, insulators, bushings, capacitors, and switches. It can generate standard lightning wave, switching wave, chopping wave with wide range voltage and energy.
It includes below parts
● Control and Measurement Table.
● Impulse Voltage Generator.
● HV DC Charging Unit.
● Weak Damped Voltage Divider
Specifications
| Impulse voltage grade | 100kV-7200kV |
| Standard lightning wave | 1.2±30%/50±20%µS |
| Peak oscillation | <5% |
| Standard switching wave | 250±20%/2500±60%µS |
| Virtual front time of oscillating lightning wave | ≤15µS |
Virtual front time of oscillating switching wave and
virtual front time of oscillating switching impulse wave | 15µS-1mS |
| The minimum output voltage | ≥10%Un |
| Charging voltage instability | <±1% |
| Synchronizing range | ≥20% |
| Synchronous discharge error rate | <2% |
| Ignition range | 10%~100% |
| Working time | ≥70%UN Discontinuous work (charge-discharge 300s/time)
<70%nn Continuous work (charge-discharge 120s/time) |
| Generator efficiency: lightning wave (no load) | ≥90% |
| Time to chopping | 2~5µS |
