MSXZ (f) -108kVA/108kV frequency conversion resonance testing system: This device is mainly designed and manufactured for AC withstand voltage testing of 10kV and 35kV cables, 10kV and 35kV main transformers, and 35kV switches. It has a wide range of applications and is an ideal high-voltage testing equipment for local, municipal, and county-level high-voltage testing departments, as well as power installation and maintenance engineering units. The device mainly consists of a variable frequency power supply, excitation transformer, reactor, capacitive voltage divider, and compensation capacitor.

1. 35kV/300mm ² cable 0.6km, capacitance ≤ 0.1556uF, test frequency 30-300Hz, test voltage 52kV, test time 60min

2. 10kV/300mm ² cable 2km, capacitance ≤ 0.751uF, test frequency 30-300Hz, test voltage 17.4kV, test time 60min

3. 10kV/20000kVA main transformer, capacitance ≤ 0.01uF, test frequency 45~65Hz, test voltage 35kV, test time 1min

4. 35kV/31500kVA main transformer, capacitance ≤ 0.01uF, test frequency 45-65Hz, test voltage 68kV, test time 1min

5. 10kV switch, transformer, test frequency 30-300Hz, test voltage 42kV, test time 1min

6. 35kV switch, transformer, test frequency 30-300Hz, test voltage 5kV, test time 1min

7. 110kV/40000kVA main transformer neutral point, capacitance ≤ 0.015uF, test frequency 45~65Hz, test voltage 80kV, test time 1min

The main functions and technical features of our company's frequency conversion resonance testing system are:

1. The device has protection functions such as overvoltage, overcurrent, zero start, and system detuning (flashover). The overvoltage and overcurrent protection values can be set according to user needs. When the test sample is flashover, the flashover protection action can be taken and the flashover voltage value can be recorded for experimental analysis.

2. The entire device is lightweight and easy to use on site.

3. The device has three working modes, which facilitate users to flexibly choose according to the on-site situation and improve the testing speed.

The working modes are: fully automatic mode, manual mode, automatic tuning, and manual boost mode

4. It can store and print data in different locations, and the stored data numbers are numerical, making it convenient for users to identify and search.

5. When the device automatically scans the frequency, the starting point of the frequency can be set arbitrarily within the specified range, and the scanning direction can be selected upwards or downwards. At the same time, the LCD screen displays the scanning curve, making it convenient for users to intuitively understand whether the resonance point has been found.

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