SEL-787-2/-3/-4

Transformer Protection Relay

787#31

Three-terminal current differential
Three 5 A phase current, one 5 A neutral current for restricted earth fault (REF)
Three 300 Vac voltage inputs
Power supply: 110/250 Vdc or 110/240 Vac
125 Vdc/Vac digital input
Dual 10/100BASE-T Ethernet and EIA-232
Protocols include: Mirrored Bits communications, Modbus RTU, DNP3, and IEC 61850
Fast high-current interrupting digital output