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PFS708 body plastic insulation voltage rating

Posted by: OLC on

We are using a PFS708 in an off-line converter. We have it held against a cold finger that is electrically insulated from ground. However, a metal pressure clip does touch the body plastic and is connected to chassis ground potential. The unit housing the offline converter has hit by lightning, and the PFS708 arced through its body plastic to the ground clip and failed. Do you know the body plastic insulation rating? Should the metal pressure clip be isolated from ground as well?

Comments

Submitted by PI-LeoDavinci on 09/01/2017

Hi OLC,

Do you have an actual picture of the set-up or image of the unit before and after the failure particulary focused on the PFS708? Thank you very much.