Communication Ports: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:Approximately 10 lbs
Analog Current Output Isolation:36 Vpk (isolated with RTDs and analog inputs)
Case Drawout:Fully drawout (automatic CT shorts)
Digital Inputs:489
Sensor Supply:24 V DC at 20 mA max impedance
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 RTD inputs
Sequential Trip Configurable:Assignable to digital inputs 1 to 7
Shipping Weight:7.7 kg or 17 lbs
Thermal Model Curve Biasing:Phase unbalance, hot/cold curve ratio, stator
The GE SR489-P5-LO-A20-E is part of the GE Multilin family of relays, specifically designed for generator protection. This robust relay is equipped with a 40-character display, allowing users to easily monitor value messages, diagnostics, and setpoints. The front panel includes a numeric keypad and status indicators, making it user-friendly and easy to operate. Designed for harsh environments, the relay supports induction and synchronous generators and can operate at 25, 50, or 60 Hz. With its advanced phase overcurrent voltage restraint and programmable characteristics, this relay ensures reliable protection and efficient management of generators. The device is also fully drawout, providing additional safety and convenience during maintenance. Additionally, the 489-P5-LO-A20-E is compatible with various digital inputs, making it a versatile solution for industrial applications.
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