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400v single phase heating element

Scott

Hi, 

I am currently having a production line designed in China which consists of some large heating elements. One of the questions of the supplier is if the heating elements can be supplied as 380/400v single phase (using a transformer). This seems odd to me as it is not something I have came across before and not something i can find an answer on online - is this legal in the UK and is there any special signage we will require for this? 

thanks in advance.  

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    A 400 volt heating element will work just as well if connected between any 2 phases of 3 phase, 4 wire, 230/400 volt supply, or between any phase and neutral of a 3 phase 4 wire 400/690 volt system, or from any other voltage via a transformer that gives 400 volts on the heating element.

    I would prefer to avoid transformers, as extra costs, losses and failure points are thereby added. Nothing actually  wrong with a transformer though.

    Presuming a standard UK supply, simply connected the heating elements between any two phases. If the total loading is significant, then balance the loading between phases at least approximately.

    elements between any two phases

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  • 0

    A 400 volt heating element will work just as well if connected between any 2 phases of 3 phase, 4 wire, 230/400 volt supply, or between any phase and neutral of a 3 phase 4 wire 400/690 volt system, or from any other voltage via a transformer that gives 400 volts on the heating element.

    I would prefer to avoid transformers, as extra costs, losses and failure points are thereby added. Nothing actually  wrong with a transformer though.

    Presuming a standard UK supply, simply connected the heating elements between any two phases. If the total loading is significant, then balance the loading between phases at least approximately.

    elements between any two phases

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