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.
Broken Conductor (46BC)
A typical unbalanced fault that can occur on the system is an open circuit fault. This
fault can arise from broken conductor, discrepancy of one switchgear poles position
or blowing of a fuse.
MiCOM P122, P123 and P127 relays are able to measure the ratio of negative to
positive sequence current (I2/I1). This fully programmable function allows more
sensitivity and stability than pure negative sequence measurement
Released for: Schneider Electric Egypt and North East Africa
