Transformer DC resistance tester is a commonly used high-voltage electrical test equipment, mainly used to measure the DC resistance of power transformers. It has also been widely used in the power industry, but many people still don't understand its measurement and discharge work. Therefore, how to use the transformer DC resistance tester to measure and discharge the transformer DC resistance tester.

Transformer DC resistance tester measurement:

After connecting the test line, turn off the power switch, turn on the power indicator, press the "Start and Stop" button, the meter head displays "E0000". Select the resistance gear range according to the measured value, press the gear switch, the gear indicator light is on, and the stable value displayed on the four and a half LCD screens is the measured resistance value. When reading the value, please pay attention to the unit (mΩ/Ω/KΩ) in the selected range. When measuring large inductance samples, such as power transformers, and other test circuits other than coils, it is not necessary to measure short circuits that are *, to avoid electromagnetic interference.

Discharge of transformer DC resistance tester:

After the test, directly cut off the main power supply. If in the perception test, the power should not be removed immediately after operation, the instrument should have a continuous discharge process, generally for at least 20 seconds, otherwise, the back electromotive force of the inductance will endanger personal safety.

The measurement and discharge of the transformer DC resistance tester are commonly used functions and require the skilled operation of electric workers. The wiring on each side of the transformer is disconnected.

The two ends of the DC resistance tester are connected to both ends of a certain winding, and the DC resistance at both ends is measured. Carry out the current test in turn, and then consider the connection mode of the windings, fold the resistance to each phase, and judge the unbalanced value.