Description

GE MIFPA55E100H00C (Digital Feeder Protection Relay)
MIFPA55E100H00C is a GE Multilin (now belonging to ALSTOM) MIF series digital feeder relay, belonging to the M Family protection control platform. It is a current over-limit protection and digital feeder control module specifically designed for gas turbines / heavy industrial equipment.

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Core parameters
Model: MIFPA55E100H00C
Brand: GE Multilin / ALSTOM
Protection type: Three-phase overcurrent protection (TOC/IOC) + Ground fault protection
Rated voltage: 24–250VDC / 100–240VAC
Frequency range: 45–65Hz
Communication protocol: Supports Modbus, DNP3, IEC 61850
Operating temperature: -25°C ~ +70°C
Weight: Approximately 0.3kg

Main functions
Overcurrent and ground protection (core)
Provides three-phase time-limited / inverse-time overcurrent (TOC/IOC), **ground fault (50N/51N)** protection, suitable for heavy-duty gas turbines, Frame series units’ feeder fault protection.
High-precision fault detection
Built-in 16-bit ADC, real-time collection of three-phase current / voltage, fault response time <20ms, supports adjustable trip curves and start value calibration.
Multi-protocol communication and monitoring
Standard Modbus RTU/TCP, optional IEC 61850, supports remote parameter configuration, fault recording upload and real-time electrical parameter measurement (current / voltage / power).

Industrial-grade anti-interference and reliability
Wide temperature design (-25°C~+70°C), vibration resistance 5G, built-in hardware watchdog, suitable for harsh environments such as metallurgy, power, oil and gas.
Typical applications
Gas turbines: feeder protection and fault monitoring for GE Frame series and heavy-duty industrial gas turbines.
Power distribution: main / backup protection for medium and low voltage switch cabinets, busbars, replacing traditional electromagnetic relays.
Industrial drives: overcurrent / ground fault protection for large motors, inverters, suitable for 6kV/10kV transmission systems.