Protection Functions:
Overcurrent Protection: Definite/Inverse Time (DTL/IDMT) with voltage restraint
Earth Fault Protection: Sensitive directional/non-directional (50/51N, 67N)
Phase Imbalance: Negative sequence detection (46)
Motor Protection: Start/stall supervision, thermal overload (49)
Arc Flash Detection: Optional light sensor input
Measurement & Monitoring:
Accuracy Class: 0.5% for current/voltage, 0.2% for frequency
Sampling Rate: 64 samples/cycle (3.2kHz at 50Hz)
Real-Time Values: Current (I), Voltage (V), Power (P/Q/S), Energy (Wh/VARh)
Disturbance Recorder: 8GB storage for COMTRADE events
Communication & Integration:
Protocols: IEC 61850 (Ed.2), Modbus RTU/TCP, DNP3.0, Profibus
Ports: 2x Ethernet (RJ45), 2x RS-485, 1x USB (front panel)
Cyber Security: Password protection, IEC 62351 compliance
Mechanical & Environmental:
Enclosure: 19" rack-mount (4U) or panel-mount, IP52 rated
Operating Temperature: -25°C to +55°C (full accuracy)
EMC Immunity: 4kV surge (IEC 61000-4-5), 8kV ESD (IEC 61000-4-2)
Certifications & Compliance:
Standards: IEC 60255, IEEE C37.90, UL 508
Grid Codes: ENTSO-E, NERC PRC-027
Safety: CE, UL, cULus
Key Advantages:
Adaptive Protection: User-configurable curve shaping (up to 20 characteristic curves)
Synchrophasor Ready: Optional PMU (IEEE C37.118) for grid synchronization
Local HMI: 5.7" color LCD with multi-language support
Test Mode: Simulate faults without tripping live systems
(Note: DFP14C1N000GB denotes specific hardware/software configuration. Consult GE publication GET-8404 for detailed settings matrices.)
Typical Applications:
Medium voltage switchgear protection
Industrial plant main feeders
Renewable energy collector systems
Mining power distribution