Description

GE SR489-P1-HI-A20-E is a microprocessor based generator protection and management relay widely used for monitoring and control of synchronous and induction generators.As an important member of the GE Multilin SR489 series,this relay has comprehensive diagnostic,protection,and control functions,which can meet the high reliability requirements of power systems in industrial sites.

P1 in the model indicates that the 60Hz system current input is 1 A CT secondary signal,HI refers to wide range power supply,A20 represents output of 4-20 mA analog signal,and E indicates equipped with an enhanced LCD panel for clearer display of operating parameters.Through EnerVista software,users can easily configure and analyze fault logs,and provide feedback on key parameters to PLC/DCS systems through simulated outputs,achieving intelligent power distribution solutions.

With 12 waveform samples per cycle,128 cycle short-circuit recording capability,IRIG-B precise time synchronization,4 analog inputs for vibration monitoring,and 12 RTD inputs for stator/bearing temperature monitoring,SR489-P1-HI-A20-E provides comprehensive visibility of generator status and efficient protection.Its drawer style design is easy to maintain,supports hot swapping,and is compatible with protocols such as Modbus/TCP,DNP 3.0,Modbus RTU,etc.,making it suitable for modern energy and industrial automation systems.

GE SR489-P1-HI-A20-E

Main features and advantages

High precision waveform sampling

SR489-P1-HI-A20-E can sample voltage and current at a rate of 12 times per cycle,support waveform recording with up to 128 cycles,and capture the instantaneous Q event of faults.

Enhance display and usability

The enhanced LCD panel improves data visibility,is clearer and more durable than the base version,and enhances on-site debugging efficiency.

Rich protection functions

Support multiple protection functions such as Stator Differential,Loss of Excitation,Over/Under Frequency,Reverse Power,Grounding Current,and Winding Overheating

Multi channel monitoring input

4 analog inputs support vibration monitoring,12 RTDs support temperature monitoring,with path voting mechanism to improve monitoring accuracy.

Strong communication capability

Supports RS-232,RS-485,10BaseT Ethernet,compatible with Modbus RTU/TCP,DNP 3.0 protocols,making it easy to integrate into existing SCADA/DCS systems

Drawer style installation is easy to maintain

The drawer style design simplifies on-site debugging and maintenance,allowing for easy plugging and unplugging of equipment without the need for downtime,significantly reducing maintenance costs.

technical specifications

Product model:SR489-P1-HI-A20-E

Manufacturer:GE Multilin(GE Grid Solutions)

Product type:Generator Management Relay

Supply voltage:90-300 V DC/70-265 V AC(48-62 Hz)

CT input type:P1=1A CT secondary

Analog output:A20=4-20 mA(4 channels)

Display panel:Enhanced Display(LCD)

Communication interface:RS-232,RS-485,Ethernet 10BaseT

Supported protocols:Modbus RTU,Modbus TCP/IP,DNP 3.0 Level 2

Analog input:4 channels,used for vibration monitoring

RTD input:12 channels,used for temperature monitoring

Drawer style design:supports drawer or 19 inch rack installation

Waveform sampling rate:12 times/cycle,up to 128 cycles recorded

IRIG-B synchronization:supports clock synchronization

Operating temperature:-40°C to+60°C

Protection level:Panel installation,compliant with UL/IEC standards

Response time:Protection action<50>

application area

SR489-P1-HI-A20-E is widely used in the protection and management of small and medium-sized synchronous or induction generators,especially suitable for scenarios such as cogeneration,industrial plant power,and backup power systems.It integrates a large number of functions such as generator stator differential protection,loss of excitation protection,frequency,voltage,reverse power,winding temperature and vibration monitoring,significantly reducing fault diagnosis time and improving system safety.

The multi protocol communication and real-time analog output of this module enable seamless integration with PLC/DCS/SCADA systems,enabling remote monitoring and intelligent maintenance strategies.The drawer style structure supports quick replacement and maintenance,suitable for critical power protection applications in power plants,distribution stations,grid sides,and industrial users.

Related products

SR489-P1-LO-A20-E:Low voltage power supply version,suitable for 20-60 VDC/20-48 VAC system environment.

SR489-P5-HI-A20-E:Same level high current CT input(5 A),suitable for high-capacity generators.

SR489-P5-HI-A20-T:Enhanced display version with Ethernet interface,supporting network monitoring.

SR489-P5-HI-A20-E-H:equipped with IP56 protective coating,suitable for harsh environments.

GE SR889(Upgraded Replacement):High performance relay,recommended to replace the discontinued 489 series

GE SR489-P1-HI-A20-E

Installation and maintenance

Preparation before installation:Please ensure that the main power supply is isolated and confirm that the supply voltage is in the range of 90-300 VDC or 70-265 VAC.Clean the installation channel and ensure good grounding.Configure CT secondary wiring(1A)and RTD sensor wiring,and reserve communication line interfaces.

Maintenance suggestion:Regularly use EnerVista software to export event records and waveform data for trend analysis and fault diagnosis.Calibrate CT and RTD measurement accuracy annually,check LCD contrast and backlight.Drawer type relays support hot plugging,and retaining redundant spare parts helps with quick on-site replacement.