Features:
- Integrates generator protection, fault diagnostics, and power metering in a unified relay platform
- Supports flexible analog and digital signal processing with configurable inputs and outputs
- Provides advanced event recording and waveform capture for detailed fault analysis
The General Electric SR489-CASE 489-P1-HI-A20-E 489 Generator Management Relay is designed to deliver comprehensive protection and monitoring for industrial generator systems. It combines multiple operational functions into a single relay platform, reducing system complexity while maintaining precise control and measurement capability. The device is structured for synchronous and induction generator applications, ensuring stable operational support in demanding electrical environments.
In industrial power systems, the General Electric SR489-CASE 489-P1-HI-A20-E 489 Generator Management Relay plays a key role in detecting electrical faults and initiating protective responses. It processes analog and digital signals to monitor system conditions continuously. With integrated communication ports, it allows seamless connection to PLC and DCS platforms for centralized supervision and control.
The General Electric SR489-CASE 489-P1-HI-A20-E 489 Generator Management Relay also supports detailed operational analysis through event logging and waveform capture. These functions help engineers identify abnormal conditions quickly and improve system reliability. Its drawout design and rack-mount compatibility make it suitable for modern industrial control panels where maintenance efficiency and safety are essential.
The SR489-CASE 489-P1-HI-A20-E General Electric 489 Generator Management Relay may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
General Electric SR489-CASE 489-P1-HI-A20-E 489 Generator Management Relay Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
General Electric SR489-CASE 489-P1-HI-A20-E 489 Generator Management Relay Specs
General
- Manufacturer GE / Bently Nevada
- Model SR489-CASE 489-P1-HI-A20-E
- Condition New Original ready stock
- Product Family 489-P1-HI-A1-T,489-P1-LO-A20-T,489-P5-HI-A20-T
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Operating Temperature Range: The standard operating temperature range for the relay is -40 °C to +60 °C (-40 °F to +140 °F). Exceeding this range may limit the response speed and lifespan of the LCD display.
- Humidity Limit: Maximum relative humidity up to 95% under non-condensing conditions. For harsh corrosive environments, a protective coating on the circuit board is recommended.
- Vibration and Shock Resistance: Meets the mechanical vibration resistance requirements of IEC 60255, suitable for installation in switchgear or generator control panels subjected to general industrial vibration.
- Insulation and Withstand Voltage: Supports power frequency withstand voltage testing up to 2.0 kV AC (for 1 minute), ensuring extremely high electromagnetic compatibility (EMC) and insulation reliability in high-voltage switchgear environments.
- Small and Medium-Sized Generator Protection: As the main protection device for 1 ACT input, it provides differential, overcurrent, and overvoltage protection for synchronous or induction generators in industrial self-contained power plants.
- Thermal Overload Monitoring: Real-time monitoring of generator stator winding and bearing temperatures via 12 RTD inputs prevents insulation damage due to overheating.
- Islanding Operation Monitoring: In both grid-connected and islanded operation modes, loss-of-excitation protection (40) and underfrequency protection (81L) ensure generator stability during grid fluctuations.
- SCADA System Integration: Utilizing its A20 option (4-20 mA analog output) and communication protocol, generator operating data can be remotely transmitted to a DCS or SCADA system for digital power distribution management.
- Self-Test: The relay has a built-in continuous self-test program that monitors the operating status of the core processor, memory, and A/D converter. If a hardware fault is detected, the "Service" indicator on the panel will illuminate, and an alarm will be issued via the output relay.
- Event Recording: The system can automatically store the timestamps of the last 64 events, including the type and time of protection triggering, and the current/voltage parameters at the time of the fault. These records can be retrieved and analyzed through the front and rear panel interfaces.
- Oscillography: The system supports waveform capture during fault triggering, recording the current and voltage waveforms before and after the fault. This helps engineers accurately determine the fault location and the response of external systems.
- Real-time Metering Diagnostics: The display screen allows real-time monitoring of stator current, terminal voltage, power factor, frequency, and RTD temperature. If the measured values do not match the system's expectations, it can help determine whether the current transformer (CT/VT) polarity or wiring is correct.