Transcription of Application Note Earth Leakage Toroids - Blue Electronics
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Application Note Earth Leakage Toroids - Blue Electronics
ELCB003 RV 3 22/11/99 CRN: 4473 AMPCONTROL CSM Pty Limited ACN 000 770 141250 Macquarie Road Warners Bay NSW 2282 Phone: (02) 4956 5899 Fax: (02) 4956 5985technicalApplication NoteEarth Leakage Toroids1. IntroductionToroids (current transformers) are not ideal devicesand if correct procedures are not followed duringinstallation nuisance tripping can result. If, forexample, we consider a single-phase Earth leakagesystem where active and neutral pass through a toroidthen at all times currents in the two wires are equaland opposite so that the net current through the toroidis zero.
ELCB003 RV 3 22/11/99 CRN: 4473 AMPCONTROL CSM Pty Limited ACN 000 770 141 250 Macquarie Road Warners Bay NSW 2282 Phone: (02) 4956 5899 Fax: (02) 4956 5985 technical
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