The DC resistance tester is mainly used to measure the DC resistance of various inductive loads such as power transformers, large motors, transformers, and low-voltage switch contact resistance, wire and cable or weld interface resistance. It has fast test speed, high accuracy and convenience. Reliability and many other characteristics have always been a high-voltage power test equipment that large electric workers often need to use. The use of a DC resistance tester for DC power supply testing and AC power supply testing are two test items that often need to be performed during the use of this instrument. .

1. DC power supply test:

Turn on the power switch, the power indicator light is on, press the "start-stop" button, you can select the corresponding resistance gear switch for testing. After the test is completed, press the "Start/Stop" button, the "discharge" indicator light will be on (if the stored power of the test product is small, the "discharge" indicator light will not be on), after discharging, the "discharge" indicator light will go out, and then switch to the test Folder and test again.

2. AC power test:

Connect the AC 220V power supply, the corresponding indicator light ("charging" indicator light or "full" indicator light) is on, turn on the power switch, the power indicator light is on, press the "start/stop" button, you can select the corresponding resistance switch for testing . After the test is completed, press the "Start/Stop" button, the "discharge" indicator light will be on (if the stored power of the test product is small, the "discharge" indicator light will not be on), after discharging, the "discharge" indicator light will go out, and then switch to the test Folder and test again.

The test methods of DC resistance testers produced by different manufacturers are slightly different. Electric workers need to test according to their actual conditions and operating instructions, so as to achieve good test accuracy.