The 145kV power system GIS AC withstand voltage test without partial discharge is applicable to test items with a maximum capacitance of <0.0001F/bay (based on 3 bays + 9m GIS internal busbar ≤0.001μF), a total capacitance of ≤0.004uF, a test frequency of 100Hz, and a maximum test voltage of 235kV.

Main Features:

1. High voltage is fully enclosed in a shielded chamber, ensuring safe and reliable testing.

2. Overall partial discharge can be controlled within 5 pc.

3. Compact size minimizes space usage and lightweight components.

4. Built-in high-voltage disconnect switch enables multi-purpose use.

5. Easy connection: Direct connection to the test object makes testing more convenient.

6. Durable structure capable of withstanding long-distance transportation.

7. Reduced system power capacity requirements.

Technical Parameters

1. Output power 50 kW

2. Input voltage 380 V ± 10%, three-phase, 50 Hz

3. Output voltage: Single-phase 0-350 V (sine wave), continuously adjustable.

4. Output waveform: Pure sine wave

5. Output waveform distortion <1.0%

6. Output voltage instability <1.0%

7. Voltage resolution 0.1 V

8. Output current 0-142.8 A

9. Cooling method: Forced air cooling

10. Frequency adjustment range 20-300 Hz

11. Frequency resolution 0.01Hz

12. Frequency instability <0.05%

13. Noise level <85dB

14. Partial discharge <10pC

15. Insulation rating 1.1Uo/1min

16. Continuous operating time >180 minutes at rated power