Test Object and Requirement
The system is specially designed for AC withstand voltage test for below items, with below specifications and requirements.
|
Test Object |
Specifications |
Test Frequency |
Test Voltage |
Test Time |
|
GIS, circuit breakers,instrument transformers |
220kV or below |
30-300Hz |
≤395kV |
1min |
|
Neutral point of Main transformers |
220kV/80MVA, capacitance≤0.02μF |
45-65Hz |
≤160kV |
1min |
Technical Data
Rated capacity: 400kVA
Input power supply: Three phase 380V, 50Hz
Rated voltage: 200kV,400kV
Rated current: 2A, 1A
Working Frequency: 30-300Hz
Output waveform: sine wave
Waveform distortion rate: ≤1%
Working time: constant working of 5mins under rated load. Working of 1min, under 1.1 times of rated voltage
Temperature rise: ≤65K after constant working of 5mins under rated load
Quality factor: Q ≥30 (f=45Hz)
Protective function: Over-current, over-voltage and flashover protections for test object.
Accuracy: 1.5% (RMS)
