MSXZ (f) -1620kVA/540kV Variable Frequency High Voltage AC Resonance Test System: This device is mainly designed for 35kV, 110kV cables, 110kV and 220kV main transformers GIS、 The AC withstand voltage test of circuit breakers has a wide range of applications and is an ideal withstand voltage equipment for high-voltage testing departments and power installation and maintenance engineering units at the prefecture, city, and county levels. The device mainly consists of a variable frequency power supply, excitation transformer, reactor, capacitive voltage divider, and compensation capacitor.

1. 220kV and below circuit breakers, GIS (5 intervals) PT, CT, insulators, test frequency 30-300Hz, test voltage 460kV, test time 1min

2. 110kV/630mm² cable 2km, capacitance ≤ 0.402uF, test frequency 30-300Hz, test voltage 128kV, test time 60min

3. 110kV and below circuit breakers, GIS (10 intervals) PT, CT, insulators, test frequency 30-300Hz, test voltage 265kV, test time 1min

4. Neutral point of 220k main transformer, capacitance ≤ 0.02uF, test frequency 45-65Hz, test voltage 160kV, test time 1min

5. 110kV main transformer terminal, capacitance ≤ 0.015uF, test frequency 45-65Hz, test voltage 160kV, test time 1min

6. 220kV/630mm² cable 0.8km, capacitance ≤ 0.1152uF, test frequency 30-300Hz, test time 60min

7. 35kV/630mm² cable 2km, capacitance ≤ 0.5066uF, test frequency 30-300Hz, test voltage 52kV, test time 60min

8. 35kV/240mm² cable 3km, capacitance ≤ 0.5415uF, test frequency 30-300Hz, test voltage 52kV, test time 60min

9. 35kV and below circuit breakers PT、CT、 Insulator, test frequency 30-300Hz, test voltage 95kV, test time 1min

Main functions and technical features:

1. The frequency modulation series resonance test device has protection functions such as overvoltage, overcurrent, zero start, and system detuning (flashover).

2. The weight and volume of the equipment are 1/10-1/30 of that of a regular testing device. The power required for the experiment is only 1/Q of the test capacity.

3. The device has three working modes: fully automatic mode, manual mode, and automatic tuning manual boost mode

4. Store and print data, with numerical numbers for easy identification and retrieval by users.

5. The starting point of the frequency during automatic frequency scanning of the device can be set arbitrarily within the specified range.

6. DSP platform technology can add or remove functions and upgrade according to user needs, making the human-machine exchange interface more user-friendly.

7. Improve the waveform of the output voltage.

8. Prevent large short-circuit currents from burning the fault point.

9. There will be no overvoltage recovery.