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Topic Title: rcd failed?
Topic Summary: is this right?
Created On: 21 February 2013 09:01 PM
Status: Post and Reply
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 21 February 2013 09:01 PM
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davettherave

Posts: 38
Joined: 06 May 2012

hi at 1 x in rcd read 310ms at 1 x read 18ms

is this a fail?
 21 February 2013 09:07 PM
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leckie

Posts: 1605
Joined: 21 November 2008

Read what you posted again. I assume your talking a 30mA rcd.
 21 February 2013 09:11 PM
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davettherave

Posts: 38
Joined: 06 May 2012

yes mate
 21 February 2013 09:15 PM
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davettherave

Posts: 38
Joined: 06 May 2012

just googled 300ms seems to be a fail

new rcd ?
 21 February 2013 09:31 PM
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daveparry1

Posts: 5878
Joined: 04 July 2007

Did you have all loads disconnected?
 21 February 2013 10:16 PM
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davettherave

Posts: 38
Joined: 06 May 2012

i didnt test it just been asked to quote on someone elses ecr

they gave it a code 2 even though 18ms at 5 x
 22 February 2013 07:11 AM
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alanblaby

Posts: 283
Joined: 09 March 2012

If whoever tested it did it properly, then the results may be correct, and, if you now go and test it again, it may give acceptable results every time.

I'd guess at it not being tested for a long time, the Tester did it correctly and did half times and 1 times 30mA, and found it was sticking, by giving the 310mS result. Once it had tripped once, the results would then be acceptable, as the corrosion/sticking had been cleared.

If that has happened, he has made a judgement that it is likely to stick again in future, so needs replacing.
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