This series devices are designed for AC withstand voltage test of substation primary equipment under 550KV or below, mainly composed of variable-frequency power supply, exciting transformer, reactor and capacitive Voltage divider
Features:
1. rated voltage:
     27kV--- meets AC withstand voltage test of 10kV cable
working frequency 30-300Hz
                 Test voltage is not more than 22kV, test time is 5min;
     54kV--- meets AC withstand voltage test of 35kV cable
Working frequency 30-300Hz
                 Test voltage is not more than 52kV, the test time is 60min;
 2. output voltage waveform distortion rate: <1.0%
 3. allow continuous working hours: one time working for 60 minutes under rated conditions;
 4. Quality factor of the device: Q > 30 (f=45Hz)
 5. device output waveform: sine wave
 6. input power supply: three phase 380V or single phase 220V
 7. frequency regulation range: 30Hz ~ 300Hz
 8. system measurement precision: 1.5%
 9. over voltage, over current, zero start and other protection functions.
COMPOSITION
1. Frequency conversion power supply
 (1) rated power: 3kW
 (2) Input voltage: three phase 380V or single phase 220V + 5% 50Hz
 (3) output voltage: 0 ~ 400V
 (4) Output voltage frequency: 30 ~ 300Hz
 (5) 0.1Hz regulation step
 (6) Frequency instability is less than 0.02%
 (7) Output current: 0 ~ 7.5A
 2.  High voltage reactor (2 units)
|  			 (1) rated working voltage: 27kV  |  		
3. excitation transformer
|  			 (1) rated capacity: 3kVA  |  		
4. capacitance divider (1 units)
|  			 (1) self capacitance: 1500pF  |  		
5. test line (1 sets)
|  			 Configuration Test object  |  			 			 Reactor 2 sections 27kVA/27kV  |  			Excitation transformer output terminal | Test voltage(kV) | 
|  			 
 35kV/300mm²/0.4km 
  |  			Series connection | 3kV | ≤52kV | 
|  			 
 10kV/300mm²Cable 1km 
  |  			Parallel connection | 1.5kV | ≤22kV | 
