P391 Generator Protection Relay

GE's Agile P34x generator protection solutions provide extensive functionality to meet all generator and generator - transformer applications, including differential protection for fast and selective tripping of phase and earth faults. All generator protection, control, monitoring, recording and communications components are housed within one box, and the solutions are accompanied by a comprehensive library of hardware options, protection and control functions to meet system requirements.

Key benefits:
Extensive condition based monitoring features for generators and transformers
Graphical programmable scheme logic eases protection scheme creation and avoids the need for external logic controllers
Range of different protocols (MODBUS, DNP3, IEC 60870-5-103 and IEC 61850) are available
IEC 61850 / DNP3.0 redundant Ethernet, supporting self healing ring, RSTP, dual homing or PRP
Programmable curves for easy protection customization

Main characteristics :
Sensitive rotor earth fault protection using low frequency injection method
Harsh Environment Option to protect against corrosive gases such as H2S or SO2
Generator and transformer thermal overload, transformer loss of life and through fault monitoring
Extensive protection for large machines such as pole slipping and 100% stator earth fault protection (3rd harmonic and low frequency injection method)