Connecting equipment requiring a neutral onboard a vessel.
Connecting equipment requiring a neutral onboard a vessel.
(OP)
Hi guys.
Pretty much every piece of equipment that arrives on my vessel is wired just to require 3 phases and earth. But someone has decided to be awkward and bring on a HPU that requires 3 phases, neutral and earth (the neutral is required as part of the control system)
Part of me is thinking about connecting the neutral to earth, but theres an alarm bell in my head ringing.
Any ideas?
Pretty much every piece of equipment that arrives on my vessel is wired just to require 3 phases and earth. But someone has decided to be awkward and bring on a HPU that requires 3 phases, neutral and earth (the neutral is required as part of the control system)
Part of me is thinking about connecting the neutral to earth, but theres an alarm bell in my head ringing.
Any ideas?






RE: Connecting equipment requiring a neutral onboard a vessel.
RE: Connecting equipment requiring a neutral onboard a vessel.
Have you found out what the control system does with the neutral (and how much current it would need to sink)? It might well just be supplying a transformer to provide low voltage power to the controls - in which case changing the transformer to one you can simply connect between two phases may be the tidiest solution.
A.
RE: Connecting equipment requiring a neutral onboard a vessel.
RE: Connecting equipment requiring a neutral onboard a vessel.
RE: Connecting equipment requiring a neutral onboard a vessel.
If for some reason a true neutral is needed, you can use three small transformers connected wye delta. The delta voltage is unimportant. The primary wye point will provide a true electrical neutral.
Don't ground the wye point neutral.
Bill
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