The working principle of digital insulation resistance tester:
The digital insulation resistance tester consists of medium and large scale integrated circuits. This watch has high output power, high short-circuit current value and many output voltage levels (four voltage levels for each model). The working principle is that the DC high voltage generated by the DC/DC conversion of the battery in the machine is passed from the E pole to the L pole through the tested product, thereby generating a current from the E to the L pole, and is completed by the I/V conversion through the divider. The calculation directly displays the measured insulation resistance value by the LCD.