The loop resistance tester is designed in accordance with the latest work standard DL/T845.4-2004 of our People's Republic of China, which uses high-frequency switching power management technology and the development of digital circuit information technology. The device is used to measure the resistance of the switch control circuit. The test current adopts DC 100A recommended by different national safety standards. It can be directly measured under the current loop resistance of 100A, and digital display. The loop resistance tester measures the accuracy, stability, and meets the required power. The power supply department field high voltage switch and high voltage switch factory repair loop resistance test.

How to use loop resistance tester

1. According to the four-wire measurement method, connect the test product to the instrument control panel with a dedicated system test wire. Note that the working voltage measurement wire should be connected to the inside of a current output wire.

2. AC220V power supply (note: the third power cord to be protected, that is, ground), press the power switch, at this time the ammeter, ohmmeter "000" (the number may not allow many beats).

3. Press the measurement control switch, adjust the working current to output a knob (press clockwise) until the current meter information displays "100.0", then read the digital technology on the resistance meter head to be the resistance value of the tested product, and Act on records. (If "1" is displayed, the measurement loop is out of range).

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4. When the test is completed, the output current adjustment knob (counterclockwise) is minimized, measure the reset switch, and then turn off the power switch.

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5. If you want to repeat the test, only need to reset the measurement system switch, clamp the test clamp again, and then press the measurement switch.