The adjustable high-voltage digital megohmmeter is a frequently used small instrument in electric power testing and testing. Although it is only a small instrument, the sparrow is small and complete. The megohmmeter function is also very powerful, here is the introduction of the professional technical engineer of Huayi, and the operating parts of the adjustable high-voltage digital megohmmeter function.
1. "L" high voltage output terminal:
It is also named the line end. The megohmmeter uses a high-voltage cable to connect to the line under test, such as the winding of a transformer or motor, and the core of the cable.
2. "G" protection terminal:
When measuring the volume resistance of insulating materials and cables with the three- electrode method of the megohmmeter, "G" is connected to the guard ring electrode of the three-electrode. The guard ring is used to eliminate the surface resistance of the measured object and the leakage interference of the measuring circuit.
3. "E" ground terminal:
The megohmmeter is safely connected to the ground and the terminal of the zero end of the measured object. The water pipe can be used as the earth end. The metal shell of the motor, transformer core and cable shielding layer belong to the zero end of the measured object. The ground terminal of artificial discharge is also connected to this terminal.
4. High voltage control button:
The megohmmeter is used to control the test power supply. The high voltage is output from the "L" terminal when it is pressed.