What is the difference between DCRM & CRM test of a circuit breaker? and also , please write the test procedures?
By testing of CRM test we have measured only contact resistance between two pole and by testing of DCRM test we have measured contact resistance between two pole also but coil current and breaker timing test should be taken by testing DCRm test.
CRM is only contact resistance measurement and DCRM is dynamic contact resistance measurement - this is circuit breaker closing time resistance.
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