Arc Flash Reduction with SEPAM Zone Selective Interlocking

Issue

Users inquire whether SEPAM relays support arc flash reduction or provide arc flash protection through Zone Selective Interlocking (ZSI).

Product

SEPAM 20, SEPAM 40, SEPAM 50, SEPAM 80

Environment

Electrical distribution systems using SEPAM relays with protection and coordination schemes such as Zone Selective Interlocking (ZSI).

Cause

There may be a misconception that Zone Selective Interlocking in SEPAM relays provides arc flash protection or equivalent arc flash reduction functionality.

Resolution

SEPAM relays are not designed for arc flash protection. While they may support protection coordination methods such as ZSI, they do not provide dedicated arc flash detection or reduction capabilities.

Released for: Schneider Electric Thailand