Schneider Electric Easergy MiCOM P391 Generator Rotor Earth Fault Injection Unit
Schneider Electric Easergy MiCOM P391 Generator Rotor Earth Fault Injection Unit is designed to provide reliable rotor earth fault detection for synchronous generators. It operates together with Easergy MiCOM P342, P343, P344 and P345 Generator Protection Relays, forming a complete rotor earth fault protection system for utility and industrial power plants.
The MiCOM P391 continuously injects a low-frequency signal into the generator rotor circuit, allowing the associated protection relay to detect insulation deterioration and rotor earth faults at an early stage. Early detection helps prevent serious generator damage, reduces unplanned outages and supports safe, reliable operation of critical generating equipment.
The unit integrates easily with existing generator protection schemes and is suitable for both new installations and retrofit projects. Its simple design, dependable operation and compatibility with the Easergy MiCOM generator protection range make it a practical solution for modern power generation systems.
Specifications
- Manufacturer: Schneider Electric
- Product Family: Easergy MiCOM
- Model: MiCOM P391
- Device Type: Generator Rotor Earth Fault Injection Unit
- Application: Rotor earth fault detection
- Suitable For: Synchronous generators
- Compatible Relays: Easergy MiCOM P342, P343, P344 and P345
- Detection Method: Low-frequency signal injection
- Generator Monitoring: Rotor insulation supervision
- Installation: Works as part of a complete generator protection scheme
- Integration: Compatible with generator protection and automation systems
Features
- Dedicated rotor earth fault injection unit for synchronous generators.
- Works with Easergy MiCOM P342, P343, P344 and P345 protection relays.
- Uses low-frequency signal injection for dependable fault detection.
- Detects rotor insulation deterioration at an early stage.
- Helps reduce generator damage and unplanned downtime.
- Supports reliable operation of generator protection schemes.
- Easy integration with existing generator protection systems.
- Suitable for utility and industrial power generation applications.
- Compact design for straightforward installation.
- Designed for long-term, dependable operation.
Applications
- Utility power stations
- Thermal power plants
- Hydroelectric power stations
- Gas turbine generators
- Industrial captive power plants
- Renewable energy generation
- Generator-transformer installations
- Large synchronous generator protection systems
Schneider Electric Easergy MiCOM P391 Generator Rotor Earth Fault Injection Unit provides dependable rotor insulation monitoring when used with compatible Easergy MiCOM generator protection relays, helping improve generator reliability and reduce maintenance costs.
