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Phasing Generator at the Switchgear

Phasing Generator at the Switchgear

Phasing Generator at the Switchgear

(OP)
The tried and true phasing method of lifting the shutters and comparing bus vs gen leads has management a bit concerned.

I do not like the idea of checking the LV side of VT's, due to many levels of variables that get introduced.

Is there a device that can bolt-on (?) to bus and gen leads, which would allow for re-energization and enable the results to be read from a distance (either wireless or long cord)??? I would have to think in today's safety conscious world, that a piece of test equipment has been developed for this exact scenario.

Thanks,
Matt

RE: Phasing Generator at the Switchgear

What is wrong with proving the VTs using a low voltage source on the primary, then trusting them once proven?

  1. With the breaker closed so both sides positively see the same primary conditions, prove the VTs agree
  2. Deliberately make one side 'wrong' and verify the VT's match the change made
  3. Put the VTs back and re-verify as per step 1

No one 'lifts the shutters' in transmission substations. The solutions which work in that environment work at MV too. winky smile

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