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Neutral Point of Heater Bank

FornhamSpark
Hi,

I have an application to control a bank of resistive heating elements (52Kw) in a Star configuration from a Eurotherm Power Management unit to control heat output.

Is it standard practice to connect the Neutral Point to Neutral ?
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    I'm not sure what's standard practice, but I can see a couple of advantages if having N connected even if it doesn't end up doing much most of the time. Obviously if the elements could be switched individually you'll need N connected - but there even if they're normally all switched together having a N would ensure correct operation of the other elements if one (or two) failed for any reason (perhaps due to a local thermal cut-out tripping, the element failing to open circuit, or loss of one phase of the supply).


    And if all else fails, see what the manufacturer's instructions say...


      - Andy.
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  • 0
    I'm not sure what's standard practice, but I can see a couple of advantages if having N connected even if it doesn't end up doing much most of the time. Obviously if the elements could be switched individually you'll need N connected - but there even if they're normally all switched together having a N would ensure correct operation of the other elements if one (or two) failed for any reason (perhaps due to a local thermal cut-out tripping, the element failing to open circuit, or loss of one phase of the supply).


    And if all else fails, see what the manufacturer's instructions say...


      - Andy.
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