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When performing insulation resistance tests on devices containing semiconductors diodes what precations must be taken and why?
Wiki User
∙ 9y ago
Insulation tests inserts high voltage DC across what ever is being tested. This voltage could be higher that the diodes peak reverse voltage. The diode might bridge across the PRV rating using a voltage higher than its normal operating voltage and destroy the diode. All variable frequency drives and soft starts will have a label on them warning against preforming this type of test with this type of equipment in the circuit. Disconnect the load from the drives when meggering a downstream load.
Wiki User
∙ 9y ago
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