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What is the difference between series resonance tester and test (hipot)transformer?

Series resonance tester and test transformers(hipot tester) can test high voltage withstand voltage. What is the difference between the series resonance and the test transformer(hipot tester)?

Series resonance is also called frequency conversion series resonance AC withstand voltage test device. It belongs to the scope of AC withstand voltage test. The test transformer(hipot tester) is mainly combined with the boost console to become a power frequency withstand voltage test device. AC withstand voltage includes power frequency withstand voltage, and the frequency range of power frequency withstand voltage is not as wide as that of AC withstand voltage test.

Frequency conversion series resonance AC withstand voltage test device, more suitable for large-capacity electrical equipment for high voltage withstand voltage test. Such as power main transformer, high voltage cable, high voltage switch, etc. The power frequency withstand voltage test device is suitable for low voltage level power electrical equipment. This is mainly due to the fact that the series resonance AC withstand voltage test device uses the principle of resonance, so that the device can obtain a high voltage level under resonant conditions. Therefore, under the same voltage level, the volume and weight of the power frequency withstand voltage test device will be greater than the variable frequency series resonance AC withstand voltage test device.

However, in terms of price, the price of the general power frequency withstand voltage test device is lower than the price of the variable frequency series resonance AC withstand voltage test device. Therefore, if you want to be economical, you can choose the power frequency withstand voltage test device. However, if you want to test large-capacity high-voltage electrical equipment, it is better to choose a frequency conversion series resonance AC withstand voltage test device, because if you choose a power frequency withstand voltage test device, its volume and weight will not be conducive to the handling of field tests.

Although we are all doing high voltage withstand voltage tests, through the above introduction, we can know the difference between series resonance and test transformers.