Insulation Resistance Test Procedure Pdf

The megger insulation tester is a small portable instrument that gives you a direct reading of insulation resistance in ohms or megohms.

Insulation resistance test procedure pdf.

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. It is commonly used in the industry for acceptance testing prior to energizing the cable and for maintenance testing programs. Insulation resistance testing introduction. Whether it involves the connection cables the sectioning and protection equipment or the motors and generators the electrical conductors.

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. Insulation resistance testing purpose. Z 2 electrical insulation testing all electrical installations and equipment comply with insulation resistance specifications so they can operate safely. Insulation resistance testing of low voltage cables in the field.

Time resistance testing method this method is fairly independent of temperature and often. Consult the insulation resistance test equipment manual or manufacturer for insulation resistance testing procedures and recommended safety guidelines. Insulation resistance testing guide. The test measures the insu lation resistance between the phases and or between phase and ground.

Insulation resistance decreases in temperature or moisture.