SEL 487B Part 1

By Eng. Zaki Albared Bus Differential and Breaker Failure Relay The SEL-487B provides optimized, low-impedance bus differential fault detection by using high-speed, subcycle protection coupled with high-security operation for external faults. Superior protection performance is combined with integrated station automation features for seamless transition into new and retrofit applications. Optional Time-Domain Link (TiDL) technology and SEL Sampled Values (SV) technology using IEC 61850-9-2 transform the way you modernize your substation. #SEL #SEL_487B #differential #low_impedance #relay #BUSBAR #Testing #monsteroftesting