Insulation Testing Before Replacing The Insulating Contact Box
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Insulation Contact Box Use the insulation resistance tester FLUKE 1550C at 2500V to test the insulation of the 35kV three-phase busbar to the ground. Phase A: 20.4MΩ, Phase B: 34.3MΩ, Phase C: 25.3MΩ. The insulation is low, and all three phases do not meet the requirements of the "Preventive Test Procedures for Power Equipment DL/T 596-1996" that the phase-by-phase insulation resistance value of the fully connected phase-separated enclosed busbar with a rated voltage of 15kV and above at room temperature should not be less than 50MΩ.
