GE MIFIIPI55E10H100 Multilin MIF II Digital Feeder Management Relay

Description

Technical Specifications

• Processor: 32-bit RISC microprocessor
• Rated Voltage: 100–240 V AC / 110–250 V DC (88–300 V DC operating range)
• Rated Frequency: 50/60 Hz
• Power Consumption: 10 VA (AC) / 10 W (DC)
• Analog Inputs: 3-phase current (5 A PH / 5 A GND), 3-phase voltage (0–120 V AC)
• Digital Inputs: 8 isolated inputs (up to 300 V DC)
• Digital Outputs: 6 relay outputs (250 V AC, 16 A resistive)
• Communication Interfaces:
  • Front-panel RS-232 (EnerVista configuration)
  • Rear-panel RS-485 (Modbus RTU, 19.2 kbps max)
  • Optional Ethernet (Modbus TCP/IP, IEC 61850)
• Display: 2×16 character backlit LCD
• Indicators: 6 LEDs (4 configurable color/function)
• Operating Temperature: -40°C to +70°C (-40°F to +158°F)
• Storage Temperature: -40°C to +85°C (-40°F to +185°F)
• Humidity: 5%–95% (non-condensing)
• Protection Class: IP54 (dust/water splash resistant)
• Dimensions (H×W×D): 170 mm × 105 mm × 32 mm (6.7 in × 4.1 in × 1.3 in)
• Weight: 4.53 kg (10 lbs)
• Certifications: CE, UL 508, CSA C22.2 No.14-13, IEC 60255
• Conformal Coating: Full PCB coating for harsh environment protection

Key Features

1. Comprehensive Feeder Protection: Provides 3-phase/ground overcurrent (instantaneous/delayed), earth fault, overvoltage/undervoltage, reverse power, and frequency protection; supports IEC/ANSI time-current curves。
2. Advanced Control Functions: Integrates circuit breaker open/close control, 4-shot auto-reclosing, cold-load pickup, and breaker failure protection; enables remote and local control。
3. High-Precision Monitoring: Measures 3-phase current/voltage, power, energy, and frequency; captures 32 event records and fault waveforms for post-fault analysis。
4. Flexible Communication: Supports Modbus RTU/TCP/IP and IEC 61850 protocols; front RS-232 for local configuration, rear RS-485/Ethernet for SCADA integration。
5. User-Friendly Interface: Features a 2×16 LCD for real-time data and fault display; 6 LEDs for status indication; 5-button keypad for local programming。
6. Dual Setting Groups: Stores two configurable protection setting groups for seamless switching between operating modes (e.g., peak/off-peak)。
7. Robust Environmental Durability: Operates reliably in -40°C to +70°C, withstands 5%–95% non-condensing humidity, and features IP54 protection for industrial environments。
8. EnerVista Software Compatibility: Uses GE’s EnerVista software for intuitive configuration, real-time monitoring, firmware updates, and fault diagnosis。
9. Flash Memory for Upgrades: Enables field-upgradable firmware via communication ports, eliminating hardware replacement for feature enhancements。
10. Configurable I/O & LEDs: Allows customization of digital inputs/outputs and LED functions/colors to match specific application requirements。

Application Scenarios

• Utility Distribution Substations: Deployed in medium-voltage (10–35 kV) substations for primary/backup protection of distribution feeders, ensuring grid stability and fault isolation。
• Industrial Power Systems: Used in manufacturing plants, refineries, and chemical facilities to protect motor control centers (MCCs), transformers, and critical process equipment。
• Commercial Buildings: Applied in high-rise buildings, shopping malls, and data centers for low-voltage (400 V) feeder protection, ensuring uninterrupted power supply。
• Renewable Energy Plants: Utilized in solar/wind farms to protect grid-tie inverters, step-up transformers, and collector feeders, complying with grid connection standards。
• Mining & Oil/Gas: Deployed in harsh mining and offshore oil/gas environments to protect heavy machinery, pumps, and compressors, withstanding extreme temperatures and vibration。

Functional Overview