GE SR489-P5-LO-A20-E Multilin Generator Management Relay in stock

GE SR489-P5-LO-A20-E belongs to GE Multilin SR489 series generator management relay. It is designed for synchronous generators with 5A CT secondary, equipped with low voltage control power and 4-20mA analog output, integrating comprehensive protection, measurement and fault recording functions.

This relay supports up to 12 RTD temperature channels for stator and bearing thermal monitoring, with drawout panel mounting structure. Widely used in power, chemical and pulp & paper generator protection maintenance, spare replacement and control system retrofit projects.

Data Parameters

• 1. Brand: GE Multilin (GE Vernova).

• 2. Model: SR489-P5-LO-A20-E.

• 3. Product Type: Generator Management Protection Relay.

• 4. Application: Synchronous generator protection & control, 5A CT secondary.

• 5. Feature: LO low control power, A20 = 4-20mA analog output.

• 6. Characteristic: 12 RTD temperature inputs, fault oscillography recording.

• 7. Control Power: 20~60VDC / 20~48VAC.

• 8. Package: Panel drawout protection relay unit.

• 9. Mounting: Installed inside generator protection cabinet.

• 10. Operating Temperature: -40℃ ~ +60℃.

Core Functions

• 1. Provide stator differential, stator ground fault, reverse power, loss-of-excitation and thermal overload protection.

• 2. Monitor stator winding and bearing temperature via RTD sensors with thermal protection model.

• 3. Measure voltage, current, active/reactive power and frequency, output 4-20mA analog signals.

• 4. Record time-sequence event logs and fault waveforms for post-fault analysis and troubleshooting.

• 5. Modbus RTU communication for remote monitoring, parameter setting and data uploading to SCADA.

Application Scenarios

• 1. Power plant medium synchronous generator protection relay spare replacement.

• 2. Petrochemical plant emergency backup generator protection cabinet maintenance project.

• 3. Pulp and paper mill on-site generator automation control upgrade.

• 4. Heavy industry generator multifunction protection spare parts inventory backup.

• 5. Old generator protection relay renewal and retrofit project.

FAQ

• 1. Q: What is GE SR489-P5-LO-A20-E?
      A: It is GE Multilin SR489 generator management relay with 5A CT, low operating power and 4-20mA analog output function.

• 2. Q: What does LO stand for?
      A: LO means low control power supply, supports 20~60VDC /20~48VAC power input for field low power supply conditions.

• 3. Q: Can it be hot swapped?
      A: Disconnect CT, PT circuits and power supply before pulling out the unit; hot swap is not permitted.