Multi-channel relay SR489-P5-LO-A20-E
489-P5-LO-A20-E
The 489-P5-LO-A20-E Low Voltage 4-20 mA Analog Output Relay
489-P5-LO-A20-E Technical Specifications
Part Number 489-P5-LO-A20-E
Manufacturer/OEM GE Multilin / GE Grid Solutions
Series 489 Generator Management Relays
Input Voltage 20-60 VDC or 20-48 VAC
Included Draw Out Case Draw Out Case Included if Listed On Quotation
Communication Ports Parity None, Odd, Even
Harsh Environment Coating Not Available on this Model
High-Set Phase Overcurrent Elements Trip
IRIG-B Amplitude Modulated 2.5 to 6.0 Vpk-pk at 3:1 signal ratio
Low Forward Power Time Delay 0.2 to 120.0 s in steps of 0.1
Phase Overcurrent Voltage Restraint Programmable Fixed Characteristic
Pollution Degree II
Pulse Output Pulse Width 200 to 1000 ms in steps of 1
Tachometer Configurable Assignable to Digital Inputs 4 to 7
Weight 10 lbs.
About the 489-P5-LO-A20-E
The 489-P5-LO-A20-E is a GE Multilin Relay belonging to GE’s SR family (which also includes the 469 Motor Protection Relay and 735 Feeder Protection Relay)
It is specifically designed for Generator Protection and can be used with both induction and synchronous generators
SR489-P5-LO-A20-E
The unit can operate at 25. 50. or 60 Hz
User Interface and Control
Features a 40-character display for viewing value messages, diagnostics, and setpoints
The front panel includes:
A numeric keypad
Status indicators
Value up and down keys
An RS232 port interface
Control and programming keys (reset, enter, menu, menu up, menu down)
This design allows for control without needing an external computer
Back Panel Connectivity and I/O
The back panel provides:
Twelve RTD inputs (field programmable)
Six output relays
Two RS485 communications ports supporting ModbusRTU or DNP 3.0 protocol (or both) up to 19200 bps
Four VT inputs
Four isolated 4-20 mA analog inputs and outputs
Seven assignable digital inputs
Seven CT inputs for three-phase output/three-phase neutral and ground current sensing
A separate safety and filter ground
All inputs meet SWC, C37.990 EMI, RFI interference immunity standards