La description

Substation series resonance withstand voltage test device is mainly designed for the AC/DC withstand voltage test of *0kV/*5kV/**0kV cable,  **0kV&below **0kV  main transformer, bus switch and other electrical equipments. Reactor is multiple and seperate design, not only for high voltage/small current equipment, but also for *0kV cable with low voltage /AC withstand voltage. It is widely applicable over high voltage test related project, power installation, field industry engineering maintenance and so on. The device is composed of variable frequency controlling power, exciting transformer, reactor, capacitor divider.

Advantages：

• Sharply reduce power capacity. Series resonance power is using resonant reactor and tested capacitor resonance to generate high voltage and big current. Power source only provide for power loss in system. So, required power is 1/Q of test capacity.
• Sharly reduce weight and size. Resonant exciting power is 1/Q of test requirement, usually it is 1/*0 - 1/*0 of capacity of common test
• Improve output voltage waveform. Power source is resonant filtering circuit, improve distortion of output voltage and get good sine wave, prevent wave peak to damage object.
• Prevent short circuit to burn faulty point. If weak point is broken down, circuit is stopping resonance, current is dropping to 1/Q of testing.
• No happen any recovery over voltage. The voltage recovery is a power accumulative process of interrupting oscillation, and long time.