Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Can we get backfeed protection without causing our Earth Leakage Breakers to trip, (ELCB)?

April 26, 2017breakers causing earth elcb leakage trip

0

Posted

Can we get backfeed protection without causing our Earth Leakage Breakers to trip, (ELCB)?

1 Answer

0

Posted

Your Model B1 can have a relay/ contactor fitted to the incoming sources (inside the STS) so that when a supply failure on Source S1 occurs the contactor will physically disconnect supply Source 1 so that no backfeed from Source 2 can appear at the terminals of Source 1. The contactor never actually breaks or makes current because the STS portion is so quick that it transfers the critical load to the alternate source (in this case S2) if it was previously on S1 (or visa versa).