3 wire 3 phase ungrounded systems

Former Community Member over 5 years ago

I suspect I already know the answer but are 3 phase, 230 volt, 3 wire ungrounded systems permitted in a UK installation?

I know this is common practice in some parts of the world but it's not something I've come across in the UK.

Just for clarity this would entail a delta connected secondary with 230 V between phases requiring separate earth fault detection.

I wait with abated breath.

Bill

Parents

0 Sparkingchip over 5 years ago

I presume this is what you need.

If it is combined with the appliance rather than supplying a circuit within the electrical installation to the appliance then surely BS7671 need not really be considered as it would come under the regulations covering the appliance you are modifying.

When the transformer is installed will it be part of the appliance or the fixed electrical installation?
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0 Sparkingchip over 5 years ago

I presume this is what you need.

If it is combined with the appliance rather than supplying a circuit within the electrical installation to the appliance then surely BS7671 need not really be considered as it would come under the regulations covering the appliance you are modifying.

When the transformer is installed will it be part of the appliance or the fixed electrical installation?
Cancel
Vote Up 0 Vote Down

Cancel

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3 wire 3 phase ungrounded systems

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