GE SR489-P5-HI-A20-E – Motor Management Relay for Industrial Control Applications
The SR489-P5-HI-A20-E is a sophisticated motor protection relay designed by GE Multilin. It offers advanced monitoring, control, and protection capabilities tailored for safeguarding medium to large industrial motors, ensuring optimal performance and safety.
Analog Current Inputs:Accuracy ±1% of full scale
Fuse Model:215-02.5
Ingress Protection:IP40 Front, IP10 Back
Maximum Altitude:2000 m
Overvoltage Category:II
RTD Inputs Isolation:36 Vpk
Sinusoidal Vibration Test Level:Class 1
Voltage Phase Reversal:Configuration ACB or ABC
Tachometer Duty Cycle:> 10%
Trip Coil Supervision:Trickle Current 2 to 5 mA
Underfrequency Pickup Accuracy:±0.02 Hz
Shipping Weight:7.7 kg or 17 lbs.
Operating Temperature Range:-40 to 60°C
Dielectric Strength:1.9 kV AC for 1 second or 1.6 kV AC for one minute, per UL 508
Analog Current Output Isolation:36 Vpk
Digital Inputs:489
Sensor Supply:24 V DC at 20 mA max
Impedance Time Delay:0.1 to 100.0 s in steps of 0.1
Negative Sequence Overcurrent Pickup Level:3 to 100% FLA in steps of 1
Phase Distance Characteristics:Offset mho
Sequential Trip Configurable:Assignable to Digital Inputs 1 to 7
The GE SR489-P5-HI-A20-E is a premium generator management relay engineered for high reliability and precision in power generation applications. Designed for both primary and backup protection, this relay ensures optimal performance and safety in a wide range of generator systems, including synchronous and induction generators used in industrial, commercial, and utility-scale operations.
This relay features a robust control power supply capable of operating on a wide voltage range of 90–300 VDC or 70–265 VAC, making it adaptable to various power system configurations. With five 5A phase CT secondaries, the device offers accurate current monitoring and protection, allowing for real-time diagnostics and fault detection.
The SR489-P5-HI-A20-E is equipped with an enhanced LCD display for improved visibility and user interaction. This allows operators to monitor critical parameters such as voltage, current, frequency, and power with ease. The relay also provides 4–20 mA analog output for seamless integration with SCADA systems and other control equipment, enabling remote monitoring and data logging.
Built to withstand harsh industrial environments, this relay operates reliably within a temperature range of -40°C to +70°C and humidity levels up to 95% non-condensing. It meets stringent international standards including IEC 60255, EN 60255, and UL certifications, ensuring long-term durability and performance in demanding conditions.
The GE SR489-P5-HI-A20-E supports multiple communication protocols such as Modbus and Profibus, allowing for flexible integration into modern power management systems. Its programmable settings and customizable protection curves make it suitable for a wide range of applications, including co-generation, emergency power systems, and grid-connected generator sets. This makes it a versatile and essential component for any industrial power system requiring advanced generator protection and control.
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