Megohmmeter
The megohmmeter is also known as a megger. Its scale is in megohms (MΩ). The megohmmeter is composed of medium and large scale integrated circuits. This instrument has high output power, high short-circuit current value, and multiple output voltage levels (each model has four voltage levels).
The megohmmeter is an essential and commonly used instrument in electric power, postal services, telecommunications, mechanical and electrical installation and maintenance, as well as in industrial enterprises that use electricity as industrial power or energy. It is suitable for measuring the resistance values of various insulating materials and the insulation resistance of transformers, motors, cables, and electrical equipment.
Product Aliases
Digital ohmmeter, pointer megohmmeter, insulation tester, digital high-voltage megohmmeter, high-voltage insulation resistance tester, insulation resistance measuring instrument, insulation characteristic tester, electric megger, electronic insulation resistance tester, high-power high-voltage megohmmeter
Working Principle
The digital megohmmeter is composed of medium and large scale integrated circuits. This instrument has high output power, high short-circuit current value, and multiple output voltage levels (four voltage levels). The working principle is that the internal battery serves as the power source, and the DC high voltage generated through DC/DC conversion goes out from the E terminal, passes through the tested object, and reaches the L terminal, thereby generating a current from E to L. After I/V conversion and division by the divider, the measured insulation resistance value is directly displayed on the LCD.
