Earth leakage detection apparatus for earth leakage breaker, has cathode connected to other end of alternating current input port of rectifier circuit, is not connected through diode

摘要

One end of test coil (11) of a zero phase current transformer (4) is connected to alternating current (AC) input port of rectifier circuit (10) through a test switch (8). A cathode connected to other end of the AC input port of rectifier circuit is not connected through a diode (D).