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What should be the minimum insulation value of a 20 kw 415v phase motor?
Wiki User
∙ 11y ago
415V
commonly available wire is 300V or 600V
so that would need to be 600V wire
to use a megger or a hipot tester
(2* operating voltage +1000V)
2000 volt megger or hipot should verify the wiring in this instance
2500v megger will be necessary for 600V wire and wiring devices
you also must look and ambient temperature and humidity
a test after some operation time can verify this
Wiki User
∙ 11y ago
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