Insulation Resistance Test Procedure Pdf

Time resistance testing method this method is fairly independent of temperature and often.

Insulation resistance test procedure pdf. Ieee standard 43 2000 recommended practice for testing insulation resistance of rotating machines recommends the insulation test voltage to apply based on winding rating and minimum acceptable values for electric motor windings. Z 2 electrical insulation testing all electrical installations and equipment comply with insulation resistance specifications so they can operate safely. Insulation resistance testing is a non destructive test procedure. The test measures the insu lation resistance between the phases and or between phase and ground.

Insulation resistance testing purpose. Consult the insulation resistance test equipment manual or manufacturer for insulation resistance testing procedures and recommended safety guidelines. With a little record keeping and common sense however you can get a good picture of the insulation condition from values that are only relative. Insulation resistance testing guide.

It is commonly used in the industry for acceptance testing prior to energizing the cable and for maintenance testing programs. The megger insulation tester is a small portable instrument that gives you a direct reading of insulation resistance in ohms or megohms. Insulation resistance testing is performed when troubleshooting electric motors and related equipment. Insulation resistance testing should be done by qualified personnel familiar with both insulation resistance testing and with the safe operation of the test equipment.

Insulation resistance decreases in temperature or moisture.