How can the Micom Series 20 P122 - P123 - P127 Detect the Broken conductor fault? | Schneider Electric Egypt and North East Africa

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.

How can the Micom Series 20 P122 - P123 - P127 Detect the Broken conductor fault?

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