13.8KV Generators cable termination
13.8KV Generators cable termination
(OP)
Good day to all,
Recently I had visited a power plant abroad USA to survey winding conditions for 8.1MW 13.8KV
During my inspection noticed that generator's power cables are not grounded at generator's junction box.
Power cables are only grounded ay substation switch board!
Will someone please revert if this is correct?
So far I have never witness medium voltage power cables connecting the generator and MSB, to have only one end grounded
Kind regards
ermioni
Recently I had visited a power plant abroad USA to survey winding conditions for 8.1MW 13.8KV
During my inspection noticed that generator's power cables are not grounded at generator's junction box.
Power cables are only grounded ay substation switch board!
Will someone please revert if this is correct?
So far I have never witness medium voltage power cables connecting the generator and MSB, to have only one end grounded
Kind regards
ermioni





RE: 13.8KV Generators cable termination
I agree that is not correct. There should be stress cone at both ends with shield of stress cone connected to ground.
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(2B)+(2B)' ?
RE: 13.8KV Generators cable termination
Much appreciated your prompt feed back,
the answer is YES only on site is grounded on the power cables and that is at Main Sitch board, but not generator site,
will it be possible to elaborate bit details so I can revert to the client,
also see attached photos with damaged end boot terminations
Sincerely
ermioni
RE: 13.8KV Generators cable termination
The photo you attached was the generator lead (not the cable from generator to remote panel), right? Was there a question about the photo?
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(2B)+(2B)' ?
RE: 13.8KV Generators cable termination
these are the single contactor cables from generator's junction box to main switch board.
One conductor per phase!
Thank you
RE: 13.8KV Generators cable termination
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(2B)+(2B)' ?
RE: 13.8KV Generators cable termination
The stress cone has a purpose – to reduce stress concentration which would otherwise occur at abrupt interruption of the shield. Without it, I guess this is what you get.
Here is a reference:
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(2B)+(2B)' ?