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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

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0 Former Community Member over 5 years ago

Bill,

Don't forget that for the unit to be legally used in the UK it must comply with the requirements of the Low Voltage Directive, and it is the responsibility of the importer to ensure this is done, it will require a declaration and technical file etc. and be CE marked, regardless of Brexit, the Low Voltage Directive has been brought into UK law.

I often see this being ignored, but as I say it is a statute law requirement.

I would look to see if it complies and look to doing any modifications to meet the legal requirements.
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0 Former Community Member over 5 years ago

Bill,

Don't forget that for the unit to be legally used in the UK it must comply with the requirements of the Low Voltage Directive, and it is the responsibility of the importer to ensure this is done, it will require a declaration and technical file etc. and be CE marked, regardless of Brexit, the Low Voltage Directive has been brought into UK law.

I often see this being ignored, but as I say it is a statute law requirement.

I would look to see if it complies and look to doing any modifications to meet the legal requirements.
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3 wire 3 phase ungrounded systems

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