What do you mean by defect ? do you want to know about the neusance tripping by elcb ? may be due to humid weather conditions
or some electric leakege type of fault , that truely should trip the electric line by elcb?
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Exploring the Science of Electricity
first, you can check your elcb setting..if ur elcb was set too low, ur equipment will be very sensitive.. small leakage smay contribute to tripping....second, you can check ur polarity of zero CT or CBCT....make sure polarity of those CT is correct.
An earth fault that requires immediate remedial attention, because the ELCB is trying to save life.
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