GE Fanuc 489-P5-LO-A20-E Generator Management Relay

The GE Fanuc 489-P5-LO-A20-E is a Generator Management Relay designed to protect and manage both synchronous and induction generators. It ensures reliable operation by monitoring critical parameters like voltage, current, and frequency.

Technical Specifications

• Model Number: 489-P5-LO-A20-E
• Brand: GE Multilin / GE Grid Solutions
• Type: Generator Management Relay
• Display: 40-character alphanumeric LCD display
• Front Panel:
  • Numeric keypad
  • Status indicators
  • Control and programming keys: reset, enter, menu, menu up/down
  • RS232 port interface
• Back Panel:
  • 12 RTD inputs
  • 6 output relays
  • 2 RS485 communication ports
  • 4 VT inputs
  • 4 isolated 4-20 mA analog inputs/outputs
  • 7 assignable digital inputs
  • 7 CT inputs for current sensing (3-phase output/neutral and ground)

Key Features

• Communication Protocols:
  • Modbus RTU
  • DNP 3.0 (up to 19200 bps)
• Operating Frequency: 25, 50, or 60 Hz
• Power Supply:
  • 20-60 VDC
  • 20-48 VAC (48-62 Hz)
• Phase CT Secondaries: 5 A
• Control Power: 20-60 VDC, 20-48 VAC
• Analog Outputs: 4-20 mA
• Inputs:
  • 12 RTDs
  • 4 VT inputs
  • Digital inputs
• Outputs:
  • 6 Form-C relays (5 non-failsafe, 1 failsafe)
• Weight: 10.0 lbs
• Dimensions: 21.6 cm (L) x 22.4 cm (W) x 25.2 cm (H)
• Environment:
  • Industrial use
  • IP40 front, IP10 back
• Altitude: Up to 2000 meters
• Protection: Overcurrent, undervoltage, and frequency monitoring