Procedure for conductor resistance testing | Procedure for CRM test

Описание к видео Procedure for conductor resistance testing | Procedure for CRM test

procedure for conductor resistance testing , Procedure for CRM test (contact resistance meter)

and also going to see following question.
1.Why we use DC current for Contact Resistance?
2.Why we use 10 to 15% of Rated Current for Contact Resistance?
3.What is the Procedure to do Contact resistance.

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