HOW'S INSULATION TEST or MEGGER of 3 Phase Transformer Works

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Distribution transformer is one of the most ubiquitous device in power system. It serves as a voltage converter between different level. Because of the versatility of this device, proper maintenance is mandatory. One of the most important examination is Insulation Resistance (IR) level. To avoid short circuit, failures, explosion or even blackout due to transformer failures, proper IR Test should be carried out especially for used or old transformer.

In this video, Insulation Resistance (IR) test or HV Test of 3 phase distribution transformer is carried out to demonstrate the theory and technique during transformer insulation resistance test.

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