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With the development of the electric industry, capacities of various electric equipments are becoming larger. Accordingly, the quality inspection test system is required to have more test capacity and higher test voltage. If traditional transformers are used in this system, transformers and voltage regulators must be very large in size due to the high requirement of test capacity. However, heavy and large test equipments would be inconvenient for onsite test, CHX-L，I series large current variable inductance series resonant test equipment can overcome disadvantages of traditional equipments, thus being an ideal choice of onsite AC voltage withstand test. 

• Configuration 

1. Necessary components

• Resonant console

• Electric voltage regulator

• Excitation transformer

• Adjustable reactor

• Fixed compensating reactor

• Capacitive voltage divider

 2. Optional components

• Optional components

• Isolation transformer

• Compensating capacitor

• Power frequency protection resistor

• Peak voltmeter 

• Power frequency AC voltage withstand test of HV breakers, GIS, GIL air-filled lines, power transformers, bushings, insulators of or over 220kV

• Power frequency AC voltage withstand test, partial discharge location test and dielectric loss test of XLPE cables of or over 110kV

• Power frequency AC voltage withstand test of assembled capacitors up to 110kV

• HV power frequency AC voltage withstand test of HV test hall

• Resonant at any point of the test range

• 50Hz or 60Hz

• Waveform distortion rate < 0.5%

• Q &ge; 50

• PD < 5Pc

• Less capacity required, thus being less large and lightweight

• No over-voltage risk

• High automation with full protection design

• Enables installation in test trailer or container