400kV Lightning Impulse Voltage Generator

The HMCJ 400 kV/20 kJ surge generator is suitable for full-wave and truncated-wave lightning impulse tests on power products such as high-voltage switchgear, circuit breakers, load switches, reactors, and power transformers rated at 3.3 to 22.5 kV and below, to evaluate the products' surge insulation performance.

• 1. Nominal voltage: 400 kV
• 2. Rated stage voltage: 100 kV
• 3. Rated charging voltage: 100 kV
• 4. Nominal energy: 20 kJ
• 5. Total impulse capacitance: 0.25 F (4 individual pulse capacitors, each rated at 1.0 F/100 kV)
• 6. Number of stages: 4 stages
• 7. Stage capacitance: 1.0 F
• 8. Stage energy: 5 kJ
• 9. Impulse Voltage Waveform Parameters: When the load capacitance is 300 to 4,000 pF or less, the following can be generated:
• Standard lightning impulse voltage full wave: 1.230% s / 5020% s,
• amplitude 3%, oscillation at the peak not exceeding 5% of the amplitude;
• truncation time: 2 to 6 s, delay control 1. Nominal Voltage: 400 kV
• 2. Rated stage voltage: 100 kV
• 3. Rated charging voltage: 100 kV
• 4. Nominal energy: 20 kJ
• 5. Total impulse capacitance: 0.25 F (4 individual pulse capacitors, each rated at 1.0 F/100 kV)
• 6. Number of stages: 4 stages
• 7. Stage capacitance: 1.0 F
• 8. Stage energy: 5 kJ
• 9. Surge Voltage Waveform Parameters: When the load capacitance is 300 to 4,000 pF or less, the following can be generated:
• Standard lightning surge voltage full wave: 1.230% s / 5020% s,
• amplitude 3%, oscillation at the peak not exceeding 5% of the amplitude;
• Cutoff time: 2–6 s; delay control efficiency: not less than 90%; when using a cutoff device, it can generate lightning truncated waves with a cutoff time of 2–6 s, and the dispersion of the truncated wave is less than 100 ns