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BS7671 Application to Power Stations

Chris Bailey

Please can someone offer some advice on the implementation of BS7671 on a new build power station in the UK. I have been challenged that the installation can be inline with IEC standards (because its a power station) , which to my understand isn't considered best practise in alignment with the requirements of the electricity at work regulations 1989.

In short my interpretation in the use of BS7671 covers the installation of LV electrical equipment to ensure that electrical installation work meets the requirements of the Electricity at Work Regulations 1989.

I'm not sure why anyone would specify an IEC standard for electrical installation when we have BS7671 that will similar but have UK specifics.

Also I am not sure why a 'power station' would be omitted from the scope of BS7671 when the electricity at work regulation 1989 applies there.

Any thoughts  on how to navigate this challenge would be appreciated?

Kind regards.

Chris

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    Chris Bailey said:
    Also I am not sure why a 'power station' would be omitted from the scope of BS7671

    The 'system for distribution to the public' (i.e. the generators and distribution equipment), if low voltage, is out of scope (Reg 110.2 (i)), but other low voltage electrical systems in the power station (local power, lighting, etc.) are not "out of scope".

    As an example,  LV services in DNO substations are often required to conform to BS 7671.

  • 0 in reply to gkenyon
    gkenyon said:
    The 'system for distribution to the public' (i.e. the generators and distribution equipment), if low voltage, is out of scope (Reg 110.2 (i)), but other low voltage electrical systems in the power station (local power, lighting, etc.) are not "out of scope".

    That was my first thought on seeing the question. The actual power which is generated is out of scope, but the 13 A socket which Mrs Meggs uses for her vacuum cleaner at the end of the working day is definitely within scope.

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  • 0 in reply to gkenyon
    gkenyon said:
    The 'system for distribution to the public' (i.e. the generators and distribution equipment), if low voltage, is out of scope (Reg 110.2 (i)), but other low voltage electrical systems in the power station (local power, lighting, etc.) are not "out of scope".

    That was my first thought on seeing the question. The actual power which is generated is out of scope, but the 13 A socket which Mrs Meggs uses for her vacuum cleaner at the end of the working day is definitely within scope.

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