Description
Woodward MRG3I5E5D
Technical Specifications
- Series: MRG3.
- Protection Functions: Overcurrent, Earth Fault, Reverse Power, Under/Over Frequency.
- Measurement: True RMS voltage and current.
- Communication: Modbus / CANopen.
Functional Features
- Generator Protection: Dedicated ANSI standard protection functions for generators.
- Mains Supervision: Monitors grid health for safe synchronization and islanding.
- Thermal Replica: Calculates generator thermal capacity usage.
- Event Recording: Stores fault waveforms and event logs.
Application Scenarios
Deployed in diesel generator sets, gas turbines, and hydro generators for primary and backup protection.
Performance Parameters
- Accuracy: High-precision measurement for reliable tripping.
- Response Time: Fast fault clearance to protect generator windings.
Material Composition
Rugged industrial enclosure with conformal-coated electronics.
Structural Characteristics
- Mounting: Flush panel mount or DIN rail.
- HMI: Front panel with LCD display and navigation keys.
Working Principle
Samples three-phase voltages and currents, calculates symmetrical components, and executes protection logic to trip the generator breaker upon fault detection.
Installation Requirements
Connect CTs and VTs with correct polarity. Ensure proper grounding of the relay case.
Precautions for Use
Verify protection settings match the generator nameplate and system coordination study. Test protection functions before energizing.
