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Switchgear distribution transformer leakage test wika

2 Important Distribution Transformer Testing Methods· The insulation resistance (IR) test (also commonly known as a Megger test) is a spot insulation test which uses an applied DC voltage (typically 250V dc, 500V dc or 1,000V dc for low voltage equipment <600V and 2,500V dc and 5,000V dc for high voltage equipment) to measure insulation resistance in either kΩ, MΩ or GΩ.

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