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fixed Wire Testing Healthcare UPS / IPS

Paddy J

Morning all, currently starting managing fix wire testing in the hospital that I work at – tester has explained they are not testing any UPS / IPS circuits supplied from the UPS / IPS (blue socket outlets etc. ) , he’s saying they never have to test these ( he confirms he wouldn’t know how). This leads me to ask what tests and how would these be carried out reference live functional testing  (earth loops etc.).BS 7671 says very little about this.

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    Others here will know more than me about hospital setups, but the first thing is to realise that IT Power Systems don't rely on ADS for shock protection under first fault conditions - but rather they remain safe with an earth fault and power continues to be supplied. Insulation monitors should then rase an alarm. So conventional loop testing is much less of a concern. Only on 2nd faults (from a different pole) need disconnection occur.

       - Andy.

  • 0 in reply to AJJewsbury

    Hi Andy, yes totally agree about the ADS AND 1st fault / 2nd fault. The real question is what tests would be carried out to allow the hospital to remain compliant with the fixed wiring tests (every 5 years), would limited tests be carried out and stated in the limitations that due to the installation being a UPS-IPS only limited tests carried out. I’m finding it extremely difficult to get any information about this.

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  • 0 in reply to AJJewsbury

    Hi Andy, yes totally agree about the ADS AND 1st fault / 2nd fault. The real question is what tests would be carried out to allow the hospital to remain compliant with the fixed wiring tests (every 5 years), would limited tests be carried out and stated in the limitations that due to the installation being a UPS-IPS only limited tests carried out. I’m finding it extremely difficult to get any information about this.

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