Can you describe the effect of connecting transformer neutral and body earthing together in TT system
Can you describe the effect of connecting transformer neutral and body earthing together in TT system
Also be aware that in some parts of the world, N is distributed on the HV/primary side - in the UK we tend to assume that any talk of N will mean the LV/secondary side, but that's not necessarily always the case.
I think normal UK practice is to Earth the transformer case on the HV/primary side (which may be solid metal back to the HV source, or a local electrode, depending mainly on whether the cables are overhead or underground) - LV N is always connected to Earth - sometimes sharing the same earthing facility as HV or sometimes a deliberately separated earth. Pros and cons to both arrangements.
- Andy.
Also be aware that in some parts of the world, N is distributed on the HV/primary side - in the UK we tend to assume that any talk of N will mean the LV/secondary side, but that's not necessarily always the case.
I think normal UK practice is to Earth the transformer case on the HV/primary side (which may be solid metal back to the HV source, or a local electrode, depending mainly on whether the cables are overhead or underground) - LV N is always connected to Earth - sometimes sharing the same earthing facility as HV or sometimes a deliberately separated earth. Pros and cons to both arrangements.
- Andy.
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