Product Description

The system is specially designed for PD-free AC withstand voltage test for electric generator, capacitance of single phase to ground is 0.4-1.2uF, test voltage is no more than 24kV.

Working Environment

• Environmental temperature: -10℃ to 50℃
• Related humidity: ≤ 90% RH
• Altitude: ≤ 1km

Technical Data & Functions

1. Rated capacity: 225kVA
2. Input power supply: Single phase 380V; 50Hz
3. Rated voltage: 25kV
4. Rated current: 9A
5. Working Frequency: Power frequency 50Hz
6. Output voltage Waveform distortion rate: ≤0.5%
7. Working time: continuous working of 15min under rated load.
8. Temperature rise: ≤65K after continuous working of 15min under rated load
9. Quality factor: Q ≥10 
10. Accuracy: 1.5% (RMS)
11. Protective function: over-current, over-voltage and flashover protections for test object.
12. Partial discharge amount: ≤5PC

Test Power Supply, L and Cx Relationship Table

PD-free AC power frequency withstand voltage test: adopts series resonant test device to make AC withstand voltage test and dielectric loss test for generator.

Reactor selection

System Configuration

1. PD-free Excitation Transformer  GDJL-27kVA/3kV/0.4kV (1 set)

2. PD-free Isolation Transformer GDGL-27kVA/380V/380kV  (1 set)

3. PD-free Resonance Control Unit  GDTF-27kVA/380V (Including voltage regulator) (1 set)

4. PD-free Adjustable Reactor GDDK-225kVA/25kV    (1 set)

5. PD-free Capacitive Voltage Divider   GDFR-30kV    (1 set)