SEL-487E

Transformer Protection Relay

487E#BMG2

TiDL relay for a digital secondary system solution
Eight fiber ports (to connect to SEL-TMU TiDL Merging Units) in place of the current and voltage analog inputs
Five-terminal transformer protection with 3 REF elements, including voltage, frequency, directional overcurrent, and volts-per-hertz elements
Station phasor measurement unit
Power supply: 125–250 Vdc or 110–240 Vac
4U chassis and horizontal rack mount
8 optoisolated independent level-sensitive inputs (125 Vdc), 13 standard Form A outputs, and 2 standard Form C outputs
Ethernet card with four 10/100BASE-T connectors
Protocols: FTP, Telnet, Synchrophasors, DNP3, and IEC 61850