Hi all, Can anyone tell me how to use a megger to test the insulation of, let say a power cord.
thanx in advance

 

Crank type: hook up megger leads to prongs of unconnected cord and give handle a good swift cranking. If the meter does not give any indication, the insulation is adequate.

Expensive type: turn on megger and hook up megger leads to prongs of unconnected cord and push button. Read resistance value from display.

Never attempt to test cord when it is connected.

 

Over here, 230 volt appliances require the megger to test insulation at 500 volts. and the resultant reading between conductors to be more than 1 Mohm, and the earth connection to be less than 1 ohm between the plug and appliance.
Preferably you want a higher insulation resistance than 1Mohm as if it got that low, I'd be questioning Why....

 

Thanks gents for answering my question

Gliddener