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ELCD Failure - Kyoritsu 5402D RCD Tester

06/29/2010 8:09 AM

What does it mean when a ELCB trips, when testing it with a Kyoritsu 5402D RCD Tester, set to "No Trip"
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Andy Germany
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#1

Re: ELCD Failure - Kyoritsu 5402D RCD Tester

06/30/2010 2:25 AM

As far as I am aware, ELCBs are set to trip at a specific current level. This depends upon exactly where in the supply its connected. (I do seem to have a vague recollection of around 30 ma of fault current.....which is confirmed in this excellent article here:-

http://en.wikipedia.org/wiki/Earth_leakage_circuit_breaker

So if it is tripping before this specific level, (as you appear to be suggesting!) I would say that the ELCB has a fault and is set to being "over sensitive" to low current levels.....send it back for repair or replacement!!!

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DSM2512
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#2
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Re: ELCD Failure - Kyoritsu 5402D RCD Tester

06/30/2010 6:57 AM

For my pennyworth.... So called "no trip" testers still trip, especially the old Robin range,of which i believe the Kyoritsu is the same, but re-badged
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