Description
Woodward MRR1-D
Technical Specifications
- Series: MRR1.
- Protection: Rotor Earth Fault, Field Failure, Loss of Excitation.
- Measurement: Rotor voltage and current.
- Output: Multiple alarm and trip relays.
Functional Features
- Rotor Ground Fault: Detects single and double ground faults in the rotor winding.
- Field Failure: Monitors excitation system health.
- Alarm & Trip: Separate outputs for warning and critical trip conditions.
- High Impedance: Prevents loading of the rotor circuit.
Application Scenarios
Essential for large synchronous generators, motors, and synchronous condensers.
Performance Parameters
- Sensitivity: High-sensitivity ground fault detection.
- Response: Fast tripping for double ground faults.
Material Composition
Robust industrial enclosure with high-voltage isolation.
Structural Characteristics
- Mounting: Panel or DIN rail.
- Connections: High-voltage rated rotor input terminals.
Working Principle
Injects a measuring signal or monitors rotor voltage/current to detect insulation degradation or complete ground faults in the rotor circuit.
Installation Requirements
Connect rotor leads with proper high-voltage insulation. Ensure the relay is properly grounded.
Precautions for Use
Handle with care due to high-voltage rotor connections. Verify rotor voltage rating matches the relay specification.
