... easily to operate. 2,Unlike DC test, 0.1HZ Digital Very-low-Frequency High Voltage TesterThe new generation of AC ... parameters:1. Output voltage ratings: 30KV, 40KV,50KV,60KV,70KV, 80kV,90KV2. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz3. Measurement ... Voltage wave form distortion: ≤ 5%6. Use condition: Indoor and outdoor; Temperature: -10C--+40C; Humidity: ≤ 85%RH7. Power: AC50Hz, 220V +-5%8. Power supply ...