GE Multilin 735/737 Feeder Protection System

735/737 Feeder Relay System – Three Phase & Ground Feeder Protection

The GE Multilin 735/737 is a microprocessor based relay used to perform primary circuit protection on distribution networks at any voltage level. Protection features include three phase timed overcurrent, phase instantaneous overcurrent, ground timed overcurrent, and ground instantaneous overcurrent. Each protection element can be selectively enabled by the front panel dial settings. Flexible settings and selec-table curve shapes enable accurate coordination with other devices. Installation and maintenance costs are lower when the 735/737 is used instead of the 8 separate overcurrent protection devices it has been designed to replace.

GE Multilin 735/737 Protection & Control

  • 3 phase time overcurrent
  • SR737 has 8 additional output relays
  • Ground time overcurrent
  • Aux trip: 86 lockout, ground trip
  • 5 curve shapes
  • Outputs: trip, aux trip, service
  • 4 curve shift multipliers per curve
  • Pickup level for each overcurrent
  • 10 time multipliers per curve
  • Ground instantaneous overcurrent
  • ANSI, IAC, or IEC/BS142 curves
  • Phase instantaneous overcurrent

735/737 Monitoring & Metering

  • True RMS sensing
  • Pre-trip data includes currents
  • Trip record of last 5 trips

GE Multilin 735/737 User Interface

  • Baud rate up to 19,200 bps
  • 8 LED trip indicators
  • ModBus™ RTU protocol
  • 4 LED status indicators
  • RS485 or RS422 communications
  • Current bar graph, % of CT