Loop Resistance Tester Test Current Must Not Be Less Than 100A
Also commonly known as a Contact Resistance Tester, it is a specialized instrument used for accurately measuring the conductive loop resistance of electrical equipment such as high-voltage switches, circuit breakers, disconnecting switches, and busbar connectors.
It injects a DC high current of no less than 100A into the tested loop to effectively break down oxide films and oil films on contact surfaces, thereby obtaining real and accurate contact resistance values — making it a key testing tool for ensuring the safe operation of power equipment.
