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Connectors for 200V dc

davidwalker2
I have an installation that uses 200V dc (balanced about earth but not earthed). All the installed equipment is direct wired, but I have an application that needs a plug and socket.  I don't want to use the standard connectors that are also used for ac to avoid ac equipment being plugged in inadvertently.  The equipment in question will draw a current around 8 amps and is metal framed, not double insulated so needs an earth.  I would be grateful for any suggestions/ advice.


I am sure that this has been discussed previously, but I cannot find it on the old forum.


Many thanks,


David
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    Again, many thanks for your interest, I had not expected to get such a generous response.

    As Mike guessed this is a museum, Kempton Steam Museum http://www.kemptonsteam.org .  The original 1928 installation was 200Vdc from a local generator, then from the mid-1930’s, ac from the grid and dc from mercury arc rectifiers.  So, we have a mix of ac and dc and as mentioned various wiring standards, no dc plugs and sockets and the ac distribution uses standard “modern” industrial standards.  We are charged with maintaining the heritage installation as installed subject to current safety regulations and if not, it has to look authentic (where on view, modern CU’s in dummy “cast iron” enclosures for instance).

    This particular requirement will be within a restricted access cage not accessible to the public.  The outlet does not have to be switched and will not be unplugged with power applied (any access will be in proximity to the bus-bars and if powered would be live working and subject to the Regulations).  I need to provide a base load of about 6 - 8amps for the rectifiers to stabilise the low current output voltage and would prefer it not to be hard wired.


    David

    My concern was to use something appropriate preferably an approved standard.  The problem is white CEEforms do not seem to be available.

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  • 0
    Again, many thanks for your interest, I had not expected to get such a generous response.

    As Mike guessed this is a museum, Kempton Steam Museum http://www.kemptonsteam.org .  The original 1928 installation was 200Vdc from a local generator, then from the mid-1930’s, ac from the grid and dc from mercury arc rectifiers.  So, we have a mix of ac and dc and as mentioned various wiring standards, no dc plugs and sockets and the ac distribution uses standard “modern” industrial standards.  We are charged with maintaining the heritage installation as installed subject to current safety regulations and if not, it has to look authentic (where on view, modern CU’s in dummy “cast iron” enclosures for instance).

    This particular requirement will be within a restricted access cage not accessible to the public.  The outlet does not have to be switched and will not be unplugged with power applied (any access will be in proximity to the bus-bars and if powered would be live working and subject to the Regulations).  I need to provide a base load of about 6 - 8amps for the rectifiers to stabilise the low current output voltage and would prefer it not to be hard wired.


    David

    My concern was to use something appropriate preferably an approved standard.  The problem is white CEEforms do not seem to be available.

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