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mansuralaa47
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Join Date: Dec 2013
Posts: 25

Estimation of Leakage Current

07/15/2014 4:09 AM

Hi dearsIs there any procedure to estimate the level of the probable leakage current in a buildingof high power consumption and several MEP equipment so the earth leakage relays at the different panels can be selected of suitable ranges?Please advise.Best Regards.
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

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Location: Richland, WA, USA
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#1

Re: Estimation of Leakage Current

07/15/2014 4:30 AM

Oh dear, no dear, probably not.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#2

Re: Estimation of Leakage Current

07/15/2014 6:36 AM

British Standard 7671.

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TonyS
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#5
In reply to #2

Re: Estimation of Leakage Current

07/16/2014 5:19 AM

What page?

I can't be bothered to look for something that isn't there.

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jack of all trades
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New Zealand - Member - Kiwi Popular Science - Weaponology - New Member Engineering Fields - Power Engineering - New Member Engineering Fields - Electrical Engineering - New Member

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#3

Re: Estimation of Leakage Current

07/15/2014 3:56 PM

Check the leakage current of the machines and add the values together. If your lucky the information is in the datasheets or manuals of the equipment otherwise you may have to measure it.

Don't forget to check the local electrical standards and codes of practice to ensure you are not setting the level too high!

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silverfox
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Join Date: Nov 2011
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#4

Re: Estimation of Leakage Current

07/16/2014 2:42 AM

what are the RCDs for. If you are looking for protecting life the criteria is different to the rating required because you have a poor earth return path and cannot clear the protection. Remeber to take into account time to discriminate between the devices.
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jack of all trades (1); PWSlack (1); silverfox (1); TonyS (1); Tornado (1)

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