SR489-P5-LO-A20-E | GE Generator Management Relay

GE SR489-P5-LO-A20-E Generator Management Relay

· RTD Input: There are 12 RTD inputs, which can be programmed on site to achieve independent tripping and alarm settings, tripping voting, thermal modeling feedback, 

and other functions. It also has sensor open circuit detection, short circuit or low temperature detection functions.

· Digital input: It has 9 digital input terminals, including 2 pre-defined and 7 assignable, which can be used for circuit breaker status detection, remote reset, test input, hot 

reset, dual set points, sequential tripping, on-site circuit breaker difference, tachometer detection, etc.

· Analog inputs: There are 4 analog inputs that can be set to 4-20mA, 0-20mA, or 0-1mA. The name, minimum value, maximum value, and unit can be specified.

· Relay output: Contains 6 output relays in the form of C-type, with contact capacity of 10A/30-250Vac or DC, 30A (0.2 seconds).

· Analog output: 4 programmable analog outputs, capable of outputting 4-20mA or 0-1mA current signals.

· Display and operation: Equipped with a 40 character vacuum fluorescent display screen and keyboard, the front panel also has 22 status indicator lights, which can display 

up to 20 selectable scrolling information and support user-defined text information.

· Communication interface: There are 2 RS485 ports and 1 front panel RS232 port, with a maximum communication baud rate of 19200bps, supporting Modbus RTU or 

DNP 3.0 protocols.

· Frequency range: It can operate synchronously at 25Hz, 50Hz, and 60Hz, with a frequency parameter range of 0.00 to 90.00Hz.

· Power parameters: LO control power is 20-60VDC, 48-62VAC at 20-48Hz.