The application of series resonance (also known as series resonance equipment) in high-voltage withstand voltage testing greatly reduces the difficulty of high-voltage withstand voltage testing. The disadvantages of traditional high-voltage withstand voltage testing are that the testing equipment is large, difficult to move, and the testing efficiency is low. This series resonant high-voltage withstand voltage testing device overcomes the shortcomings of traditional high-voltage withstand voltage testing, and has made significant improvements on this basis, making high-voltage withstand voltage testing more effective.

For the AC withstand voltage testing of electrical equipment such as 220kV high-voltage bushings, main transformers, and isolating switches, this series resonant withstand voltage testing device has a wide range of applications and is also a very practical and easy-to-use withstand voltage testing equipment for various high-voltage testing departments and power decoration testing engineering units.

The series resonant withstand voltage testing device has the advantages of small power capacity, small equipment size, light weight, improved output voltage waveform, prevention of large short-circuit current from burning out the fault point, and no overvoltage recovery. Especially, it improves the output waveform, prevents large short-circuit currents from burning out the fault point, and has no advantage of restoring overvoltage, making high-voltage withstand voltage testing very safe and reliable. This is because the resonant power supply is a resonant filtering circuit, which can not only improve the waveform distortion of various voltages, but also obtain good sine waves, thereby preventing harmonic peaks from penetrating the test object. When the test is in series resonance state, when the weak point of the insulation of the tested object is broken down, the circuit will immediately lose resonance, and the loop current will quickly drop to a short period of time of the normal test current, so that series resonance can quickly find the weak point of the insulation and prevent the hidden danger of short-circuit current burning out the fault point. When the test object malfunctions, the high voltage immediately disappears due to the loss of resonance conditions, and there will be no recovery of overvoltage.

Therefore, due to the advantages of series resonance, the application of this series resonance testing device in high-voltage withstand voltage testing makes high-voltage withstand voltage testing safe, reliable, simple and effective. Therefore, the series resonance tester is a very practical and reliable testing equipment for high-voltage withstand voltage testing!