GAOTek circuit breaker tester is applicable to all the types of SF6 switch, GIS switchgear, vacuum switch and oil switch with metal contact manufactured at home and abroad.

GAOTek circuit contact resistance parameter tester is a high-precision and digital switch testing instrument.

This Circuit High Voltage Parameter Tester has output power of 30 V to 250 V, humidity of 80% RH and temperature range of 14 °F to 104 °F.

GAOTek circuit impedance parameter tester is designed for efficient and accurate calibration of the primary measurement functions of the predominant Transformer Comprehensive Parameter Testers and Transformer No-Load Loss Parameter Testers available in the market.

GAOTek circuit resistance parameter tester is the new technology of the power supply, which can continuously output large current for a long time.

GAOTek circuit transformer capacity parameter tester is a new type of instrument developed and designed for poor power users to evade basic electricity charges and privately increase capacity.

GAOTek comprehensive circuit parameter tester is a special device for measuring various mechanical characteristic parameters of power switches.

This Dynamic Portable Circuit Parameter Tester has measuring range of 20 V to 270 V, maximum current of 30 A and power supply of AC 220 V ± 10%.

This No Load Current Level Parameter Tester has frequency of 45 Hz to 55 Hz, power supply of 220 V AC and temperature of 23 °F to 104 °F.

GAOTek portable high voltage circuit breaker tester performs three main tasks When closed, they must conduct the current as effectively as possible. When open, they must insulate the contacts from one another as effectively as possible.