The Tips for Choosing Series Resonance Test Equipment

What are the tips for choosing seriesresonant equipment? In the power industry, series resonant equipment (referredto as: variable frequency series resonant) is mainly used for withstand voltagetest, in order to meet the requirements of large-capacity recognized products,and the test device developed. The series resonance test device is simply a setof combined equipment. In order to carry out the withstand voltage testsmoothly and accurately, its components are also different in order to meet therequirements of different recognized products. So what points should people payattention to when choosing series resonant equipment?

Variable Frequency Series Resonance Test Device

First of all, when choosing a seriesresonant device, you must look at its operability. For example, whether it hasautomation, whether it can automatically find the test resonance point,automatically track and maintain a stable voltage, etc. Secondly, theinsulation performance must be good. In the withstand voltage test, there areoften dangerous operations such as overvoltage, overcurrent, detuning,flashover, etc. At this time, the series resonance test device must havemultiple protection features; then, it depends on whether the volume of thereactor in the device is light and convenient Transport and carry. After that,we must compare the cost performance, starting from the wide range ofapplications, and see if different types of reactors can be selected to meetthe requirements of different test products to achieve multiple functions inone machine.

Selecting a set of series resonance testequipment according to the above method can greatly reduce your test cost, andthe actual operation in the test is also convenient, fast, and efficient. Itimproves work efficiency while taking into account your own operational safety.

In addition to these general methods, thereare more detailed selection schemes, such as starting from technicalparameters:

1. Power transformer: voltage level (suchas 10/35/110/220kV specifications, etc.); large capacity; test nature (neutralpoint withstand voltage or full insulation withstand voltage); single phase toground capacitance;

2. Power cable: voltage level (such as10/35/110kV specifications, etc.); large length; cross-sectional area;

3. Generators and motors: voltage level;test voltage (z high withstand voltage value); single phase ground capacitancerange (such as 0.2-0.55uF, etc.);

4. GIS: voltage level (or working voltage);test voltage (z high withstand voltage value); number of intervals;

5. Switches, insulators, PT, CT, insulatingtools, busbars: voltage level (or working voltage); test voltage (z highwithstand voltage).

6. CVT validation: voltage level (orworking voltage, such as 35/110/220 specifications, etc.); test voltage (z highwithstand voltage value); capacitance range (such as 0.005-0.02uF).

Combining the above methods, I believe thateveryone can have a clear idea of series resonance selection and quicklyidentify the dazzling array of series resonance devices on the market.

EP Hipot Electric Co., Ltd.