900kV/67.6 kJ Lightning Impulse Voltage Generator Complete Test Equipment for Transformer, Reactor, Cable

Rated parameter value

1. Nominal voltage: 900kV

2. Rated voltage: 150kV

3. Nominal energy: 67.6kJ

4. Total impact capacitance: 0.167 microfarad (single pulse capacitor 2.0 microfarad / 75 kV, 12 in total)

5. the total number of levels: 6

6. Standard waveform parameters:

(1) Full lightning surge voltage

Wave head time: 1.2us ± 30% uS, wave tail time: 50us ± 20%

Voltage utilization factor> 85% (greater than 90% at no load 300PF);

(2) Standard cut-off: cut-off time 2-6uS, zero-crossing coefficient ≤0.3%, voltage utilization coefficient> 85%

7. the minimum output voltage is greater than 10% of the nominal voltage

8. Duration of use: Above 70% of rated voltage, continuous operation can be performed after charging and discharging every 120 seconds, and below 70% of rated voltage, continuous operation can be performed after charging and discharging every 60 seconds.