OP
Octopus
Yes I do
what is the "back ground" leakage like across the installation?
Discuss Earth Leakage problem in the Industrial Electricians' Talk area at ElectriciansForums.net
Yes I do
Yes....still trips with the 3 phase main switch shut off. Tested no voltage to the top of the ELCB....which I find very odd. Cannot wrap my head around that.Murdoch dunno if you spotted the bit about the ELCB still tripping with the installation off at the main switch? I think that is what was meant (J.Spark, can you confirm?) in which case I don't think it's leakage from this installation but from elsewhere circulating via the MET. This is one of the rare cases where it's actually helpful to clamp either of the earth leads going through the ELCB, normally clamping a CPC can give misleading results but here it's relevant because that's the current in the trip coil. If it's more than the current measured with the two tails clamped together (this system's leakage) then the problem is external.
Will do so when I am on site againIn the OP he states he replaced the 'earth leakage unit' with a new one, after I read that I wrote off any possibility it was a VOELCB. Photos would be handy if JSpark can attach a couple..
Ahh, I've got a feeling your terminology is causing kak boet.I am from South Africa so the wording may be a little different lol!
Reply to Earth Leakage problem in the Industrial Electricians' Talk area at ElectriciansForums.net
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