Insulation Resistance Test Standard Values

Also acceptable values of insulation resistance depend upon the equipment you re testing.

Insulation resistance test standard values.

One meg ohm rule for ir value for equipment. Based upon equipment rating. 1k v 1 mω minimum 1kv 1 mω 1kv. The insulation resistance test is the second test required by the electrical safety testing standards.

Curve b shows same values corrected to 20 c see page 22 giving a definite downward. The insulation resistance test consists in measuring the insulation resistance of a. Figure 4 typical record of insulation resistance of a mill motor. 1k v 1 mω minimum 1kv 1 mω 1kv.

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. Use these values in the absence of consensus standards dealing with insulation resistance tests. Based upon equipment rating. 3 shows a typical scale which reads increasing resistance values from left up to infinity or a resistance too high to be measured.

Curve a shows test values as measured. At a pressure of 1000 v applied between each live conductor and earth for a period of one minute the insulation resistance of hv installations shall be at least 1 mega ohm or as specified by the bureau of indian standards. One meg ohm rule for ir value for equipment. As per ie rules 1956.

At a pressure of 1000 v applied between each live conductor and earth for a period of one minute the insulation resistance of hv installations shall be at least 1 mega ohm or as specified by the bureau of indian standards. Insulation resistance test values the insulation resistance values on this page are based off of representative values suggested by the neta standards review council.