Product Aliases
Digital megohmmeter, analog megohmmeter, insulation tester, digital high-voltage megohmmeter, high-voltage insulation resistance tester, insulation resistance measuring instrument, insulation characteristic tester, electric摇表, electronic insulation resistance tester, high-power high-voltage megohmmeter
Working Principle
The digital megohmmeter is composed of medium and large scale integrated circuits. This meter has high output power, high short-circuit current value, and multiple output voltage levels (four voltage levels). The working principle is that the DC high voltage generated by the internal battery as power source through DC/DC conversion is output from the E terminal, passes through the tested object to the L terminal, thereby generating a current from E to L terminal. After I/V conversion and division operation, the measured insulation resistance value is directly displayed by the LCD.
Features of Megohmmeter
1. High output power, strong load capacity, and strong anti-interference capability.
2. The shell of this meter is made of high-strength aluminum alloy. Inside, an equipotential protection ring and a fourth-order active low-pass filter are provided, which can effectively shield against external power frequency and strong electromagnetic fields. For capacitive test objects, due to the output short-circuit current greater than 1.6mA, it is easy to quickly raise the test voltage to the rated value of the output voltage. For low resistance measurement, due to the proportional method design, voltage drop does not affect the test accuracy.
3. No manual labor is required; it is powered by battery, and the range can be automatically switched. The clear panel operation and LCD display make measurement very convenient and fast.
4. The output short-circuit current of this meter can be directly measured without estimation through load measurement.
