1. Product Description

MIVII1000E00HI00 is a multifunctional digital feeder protection IED manufactured by GE Multilin, designed for medium-voltage power distribution feeders, industrial transformers and auxiliary power units. It is a compact panel-mount protective relay integrated with measurement, protection, control, fault recording and communication functions, widely deployed in power plants, refineries, factories and municipal substations.

The model suffix E00HI00 defines its hardware configuration: standard LCD HMI display, dual Ethernet communication, universal AC/DC dual power supply, full set of analog/digital I/O terminals, without optional arc flash expansion module. The unit supports 47~63Hz power grid, rated CT current up to 1000A peak, rated voltage up to 690V AC, meeting IEC 60255 and ANSI C37 industrial protection standards.

Electrical specifications: Wide-range power supply 24VDC ±20% or 110~240VAC auto-switch; operating temperature range -10℃ ~ +50℃; front panel IP54 dust & splash resistance; built-in non-volatile memory to store protection setting groups, fault event logs and disturbance records; conformal coated internal PCB for anti-corrosion in harsh industrial cabinet environments.

2. Core Product Functions

• Complete ANSI Standard Feeder Protection Suite Integrated overcurrent (50/51), earth fault (51N), overvoltage (59), undervoltage (27), over/under frequency (81O/U), negative sequence voltage (47), breaker failure and cold load pickup protection; multi-stage time-delay and inverse-time curve configurable to coordinate upstream & downstream protection devices.
• High-Precision Electrical Measurement Real-time three-phase voltage, current, active/reactive power, power factor, energy accumulation monitoring; support 16-bit high-precision ADC sampling for accurate power statistics and load analysis.
• Local HMI Operation & Control Front LCD display with navigation buttons for on-site parameter setting, real-time data viewing, fault alarm browsing and manual breaker closing/tripping; multi-color LED indicators for power, alarm, trip and communication status.
• Multi-Protocol Industrial Communication Dual Ethernet ports supporting Modbus TCP, EtherNet/IP; rear RS485 terminal for Modbus RTU; bidirectional data exchange with plant DCS, SCADA and substation monitoring systems for remote control and data upload.
• Fault Recording & Event Logger Built-in disturbance recorder to store COMTRADE format fault waveform data; timestamped event log records protection trips, breaker status changes, communication faults and parameter modification history for post-fault analysis.
• Programmable Logic & Interlock Control Custom logic programming via GE configuration software; support load shedding, synchrocheck, transformer OLTC auxiliary interlock, breaker control and abnormal load automatic trip logic.
• Comprehensive Self-Diagnosis & Fault Alarm Continuously monitor CT open circuit, VT fuse failure, internal hardware error, power supply undervoltage and communication disconnection; lock misoperation of protection functions and trigger local alarm output when abnormalities detected.
• Multiple Setting Group Switching Store up to 8 groups of protection parameters; auto switch setting groups according to grid load period, maintenance mode or seasonal power supply conditions without repeated reconfiguration.

3. Typical Application Scenarios

• Industrial Medium-Voltage Distribution Substations Primary/secondary feeder protection for factory power distribution cabinets, implement overload, short-circuit and earth fault protection for distribution lines.
• Thermal & Cogeneration Power Plants Auxiliary station service transformer and feeder protection, frequency/voltage supervision for plant auxiliary power supply, generator islanding anti-islanding protection.
• Oil & Gas Refineries & Offshore Platforms Hazardous area medium voltage feeder protection, coordinated load shedding to protect critical production compressors and pumps during grid voltage drop.
• Municipal Power Distribution Networks Urban substation overhead line and cable feeder protection, automatic fault isolation and power restoration logic for urban power grids.
• Mining & Metallurgical Heavy Industry Mine underground power distribution line protection, motor group feeder overcurrent and earth fault protection for smelting furnaces.
• Chemical & Petrochemical Plants Explosion-proof switchgear feeder protection, multi-stage priority load shedding to avoid critical process equipment shutdown during grid faults.
• Commercial Complex & Large Data Center Power Rooms Transformer low-voltage side backup protection, busbar voltage/frequency monitoring and emergency load cut-off interlock control.

4. Common Faults & Troubleshooting Issues