Insulation Resistance Test Levels

The insulation resistance test is the second test required by the electrical safety testing standards.

Insulation resistance test levels.

Since 80 of electrical maintenance and testing. For low voltage installations i e. The insulation resistance test consists in measuring the insulation resistance of a. The results obtained from ir test are not intended to be useful in finding localized defects in the insulation as in a true hipot test but rather give information on the quality of the bulk material used as the insulation.

An infinite resistance would be the perfect result. 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. When performing insulation resistance testing you must maintain consistency. The measured resistance indicates the condition of the insulation between two conductive parts.

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. 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. Test results are dependent on the temperature of the insulating material and the humidity of the surrounding environment at the time of the test.

Hands down without a doubt one of the most universally searched topics on ec m s website from a historical perspective is insulation resistance testing as a result some of our most popular evergreen articles like understanding insulation resistance testing continue to top the charts when it comes to most popular content. Insulation resistance test values use these values in the absence of consensus standards dealing with insulation resistance tests. 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. Insulation resistance decreases in temperature or moisture.