This resonant test system is designed and manufactured primarily for AC withstand voltage tests of 10kV and 35kV cables, 10kV and 35kV main transformers, and 35kV switches.

It has a wide range of applications and is an ideal withstand voltage testing device for municipal, county, and prefecture-level high-voltage testing departments, as well as power installation and maintenance engineering units.

The system mainly consists of a frequency converter, excitation transformer, reactor, capacitive voltage divider, and compensation capacitors.

1. 10kV/300mm² cable, 1.5km, capacitance ≤0.563uF, test frequency 30-300Hz, test voltage 22kV, test time 5min.

2. 35kV main transformer AC withstand voltage, capacitance ≤0.02uF, test frequency 45-65Hz, test voltage 68kV, test time 1min.

1. It has overvoltage, overcurrent, zero-position start, and system detuning (flashover) protection functions.

2. The equipment's weight and volume are 1/10-1/30 of a typical testing device. The power required for testing is only 1 Ω of the testing capacity.

3. The device has three operating modes: fully automatic mode, manual mode, and automatic tuning/manualboost mode.

4. Data storage and printing: Stored data is numbered for easy identification and retrieval by the user.

5. The starting frequency for automatic frequency sweeping can be arbitrarily set within a specified range.

6. DSP platform technology allows for adding, removing, and upgrading functions according to user needs; the human-machine interface is more user-friendly.

7. Improved output voltage waveform.

8. Prevents large short-circuit currents from burning out fault points.

9. No recovery overvoltage will occur.