Variable Frequency Series Resonance ac hipot test set Product Overview

The device is mainly designed for AC voltage test of 110kV cable and 220kV power system. The separate manufacturing reactor design, can meet the requirements of high voltage equipment, test conditions. The small current is, city, county departments and high voltage test of electrical installation, repair and test pressure equipment engineering unit ideal. The device is mainly composed of variable frequency control of the power supply, excitation transformer, high voltage reactor and capacitor divider.

Variable Frequency Series Resonance ac hipot test set Subject to be tested

1. - 10kV,400mm² and below, 5km cable AC voltage withstand test, the maximum capacity ≤2.105μF, the test frequency is 30-300Hz, the maximum test voltage 22kV.

2. - 35kV,300mm² and below,2km cable AC voltage withstand test, the maximum capacity≤0.389μF, the test frequency is 30-300Hz, the maximum test voltage 52kV.

3. - 110kV,630mm² and below,1km cable AC voltage withstand test, the maximum capacity ≤0.201μF, the test frequency is 30-300Hz, the maximum test voltage 128kV.

4. 110kV, 220kV power transformers, circuit breakers, transformers, insulators, wall busbar, GIS combination of high voltage switch, AC withstand voltage test frequency is 45-65Hz, the maximum test voltage 495kV

Variable Frequency Series Resonance ac hipot test set work environment

1. ambient temperature:-15⁰C –45 ⁰C

2. relative humidity: ≤90%RH;

3.Altitude:≤2500m

Variable Frequency Series Resonance ac hipot test set Overall parameters of the device system

A) rated capacity: 1080kVA;

B) input power: single phase 220V/380V voltage, frequency 50Hz;

C) rated voltage: 135kV, 540kV

D) current rating: 8A, 2A

E) working frequency: 30 ~ 300Hz;

F) waveform distortion rate: the output voltage waveform distortion rate ≤1%;

G) work time: allow continuous 60min under rated load;

H)Temperature rise: continuous operation of 60min after the temperature is≤65K;

I) quality factors: device Q≥30(f=45Hz)

J) protection function: to be subject to overcurrent, overvoltage and test flashover protection (see the part of frequency conversion power supply)

K) measurement accuracy: System RMS 1;

For Example:

AC resonance test set 108KV/216KVA. 

The system includes as below:

1.Exiting transformer 12KVA:                                1 Unit

2.Voltage divider 120KV:                                       1 Unit

3.Variable frequency power source 12KW:           1 Unit

4.HV reactor 54KVA/27KV:                                   4 Units