{}

Our Brands

Impact-Company-Logo-English Black-01-177x54

Welcome to the Schneider Electric Website

Welcome to our website.

Search FAQs

This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.

What is the Restricted earth fault protection and how to implement on Low Voltage ?

The restricted earth fault protection (ANSI 64REF) can be applied if the downstream power system neutral is earthed at the transformer (document attached).
This is a differential protection function that detects the difference between residual currents measured at the neutral earthing point and at the three-phase output of the transformer.
Please find attached document describing how to implement the estricted earth fault protection  with Masterpact Micrologic 6.0

Schneider Electric Egypt and North East Africa

Attachment(s)

technical_bulletin18_v4 Restrited Earth Fault.pdftechnical_bulletin18_v4 Restrited Earth Fault.pdf [482.87 KB]
Explore more
Range:
Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.
Explore more
Range: