GCXZ Variable Frequency Series Resonance Withstand Voltage Test Device



 




  • Fully Automatic Mode


  • Manual Mode


  • Auto-Tuning Manual Boost Mode











 




 


 








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  • Product Features



1. The device has protection functions such as overvoltage, overcurrent, zero-position start, and system detuning (flashover).

2. The device has three working modes, allowing users to flexibly choose according to site conditions to improve test speed.

3. Working modes are: fully automatic mode, manual mode, and auto-tuning manual boost mode.

4. It can store data; the stored data numbers are numeric, making it easy for users to identify and search.

5. It adopts DSP platform technology, which facilitates adding or upgrading functions according to user needs, and makes the human-machine interface more user-friendly.



Technical Parameters

1. Rated Voltage:

27kV - meets AC withstand voltage test for 10kV cables;

54kV - meets AC withstand voltage test for 10kV systems and 35kV cables;

135kV - meets AC withstand voltage test for 35kV systems;

2. Output voltage waveform distortion rate: <1.0%

3. Allowable continuous working time: 15 minutes at a time under rated conditions,

4. Device's own quality factor: Q>50

5. Quality factor under full load during thermal generator testing: Q>10 (related to load)

6. Quality factor under full load during cable testing: Q>30 (related to load)

7. Quality factor under full load during main transformer testing: Q>30 (related to load)

8. Quality factor under full load during GIS, switch, etc. testing: Q>50 (related to load)

9. Input power: single-phase 380V

10. Frequency adjustment range: 20Hz～300Hz

11. System measurement accuracy: 1.5%

12. The device has protection functions such as overvoltage, overcurrent, and zero-position start.

Main equipment configuration and technical parameter description:

1.Variable frequency power supply (one unit):

Rated power: 6kVA;                  Input voltage: single-phase 220V or three-phase 380V±10%  45～65Hz

Output voltage: 0～400V adjustable      Output voltage frequency: 30～300Hz     0.1Hz step adjustable

Frequency instability ≤0.02%            Output current: 0～15A

2. High-voltage resonant reactor (5 units in total):27kV/0.8A

Rated working voltage: 27kV        Rated working current: 0.8A       Rated inductance: 120H

Continuous working time: 60min      Temperature    rise: less than 60 degrees          Working frequency: 30~300Hz

3. Excitation transformer (one unit):                                     

Rated capacity: 6kVA      Input voltage: 200V/400V

Output voltage: 1.2kV/3kV/5kV, 1.2kV for AC withstand voltage test of cables below 10kV; 3kV for 35kV cables and 10kV substation system AC withstand voltage test; 5kV for 35kV substation system AC withstand voltage test.

4. Capacitive voltage divider (one unit): 135kV pure capacitive type:

   Self capacitance: 600pF        Working frequency: 30～300Hz        Uncertainty: 1.5%        Rated voltage: 135kV/600pF