Core Features
Full dimensional protection: covering stator differential, 100% stator grounding, demagnetization/overexcitation, reverse power, overcurrent/undercurrent, overvoltage/undervoltage, frequency abnormality, etc. The microprocessor drives rapid tripping (about 10ms) to ensure the safety of the generator.
Enhanced human-computer interaction: 40 character LCD large screen+LED indicator lights+numeric keypad, supporting local parameter settings, fault diagnosis, and event record tracing, with a pull-out handle to prevent misoperation.
Data monitoring and diagnosis: Real time monitoring of current, voltage, power, frequency, temperature, etc., supporting waveform recording, trend analysis, and pre fault data tracing for easy maintenance and analysis.
Flexible integration and expansion: 8 analog output channels are connected to DCS/PLC, 6 programmable relays are adapted to the unit control logic, and the communication interface supports remote monitoring and data uploading.
Conventional working condition adaptation: Standard coating design, suitable for conventional industrial environments without strong corrosion and high humidity, balancing cost and performance.
Application scenarios
Main or backup protection for small and medium-sized synchronous/asynchronous generators such as self owned power plants, distributed generation, and cogeneration.
Power generation equipment for industries such as chemical, metallurgical, and mining, used for comprehensive protection of generator stator, rotor, and electrical circuits.
The system with high reliability requirements for generators in conventional industrial environments does not require conformal coatings.

GE SR489-P5-HI-A20-E｜Motor Management Relay｜