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Electrical Inspection & Testing Forum
earth loop impedance
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<blockquote data-quote="SLIPSHOD &amp; SLAPDASH" data-source="post: 12055" data-attributes="member: 16"><p>My old Robin earth loop has 'D Lock' to prevent the Rcd tripping. This works by saturating the Rcd coil with DC. Modern Rcbo's can sense both AC &amp; DC ( largely because lots of new PSU'S can put out DC when working, preventing an Rcd from tripping) I can not use this on Rcbo's and have bought a fluke multi tester now.</p><p></p><p>Why did you think your meter was cheap ?</p></blockquote><p></p>
[QUOTE="SLIPSHOD & SLAPDASH, post: 12055, member: 16"] My old Robin earth loop has 'D Lock' to prevent the Rcd tripping. This works by saturating the Rcd coil with DC. Modern Rcbo's can sense both AC & DC ( largely because lots of new PSU'S can put out DC when working, preventing an Rcd from tripping) I can not use this on Rcbo's and have bought a fluke multi tester now. Why did you think your meter was cheap ? [/QUOTE]
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