Insulation Resistance Test Levels

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Insulation resistance test levels.

The insulation resistance test is the second test required by the electrical safety testing standards. Insulation resistance decreases in temperature or moisture. For low voltage installations i e. Test results are dependent on the temperature of the insulating material and the humidity of the surrounding environment at the time of the test.

When performing insulation resistance testing you must maintain consistency. 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. Because electrical insulation will exhibit dynamic behavior during the course of your test. An infinite resistance would be the perfect result.

230v to measure insulation resistance in ohm s. Even when not required by the end customer many wire and cable manufacturers use the insulation resistance test to track their insulation manufacturing processes and. Whether the dielectric is good or bad to evaluate a number of test results on the same piece of equipment you have to conduct the test the same way and under the. The measured resistance indicates the condition of the insulation between two conductive parts.

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 values use these values in the absence of consensus standards dealing with insulation resistance tests. Developed early in the 20th century the insulation resistance ir test is the oldest and most widely used test for assessing the quality of insulation. Since 80 of electrical maintenance and testing.