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Query on VTS being grounded on primary side? Why?

kev2632

Electrical
Apr 7, 2025
3
Hi there,

We have PI test to do on a generator however I've noticed the Withdrawable VTs on the drawing attached on the primary side of the VTs are earthed down also as well as the secondary side
Would this give us a dead short if not removed on the primary side?

Why is this ?? What's the reason for it?

Thanks
 

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