Leakage sensor

Leakage sensor

A sensor that detects the current leaking due to poor insulation of electrical equipment. Ground ammeters that detect the current by using the magnetic field generated by the current by connecting the ground circuit of the electrical equipment are widely used. When the detection current is DC, a magnetic modulator is used, which adds AC excitation current through another path to generate AC current proportional to the DC current in other coils . Current detection sensors that use the multiplication function of Hall elements can also be used as leakage sensors.