MIVII1000E00HI00 is a digital voltage protection relay from the GE Multilin M II Series, specially designed for pure voltage protection of motors, generators, automatic transfer systems, lines and busbars in power systems. It is a cost-effective intelligent protection device.
This product integrates accurate voltage monitoring, flexible configuration, and comprehensive fault recording and diagnostics. It supports Modbus RTU communication and is compatible with EnerVista software. Featuring a 1/4 19" rack-mounted withdrawable structure, it meets voltage protection requirements in various industrial and power applications.
It also provides password protection, on-site firmware upgrade, dual setting groups and other functions, ensuring operational safety and convenient maintenance.

Order Code Explanation
- 1000: Function type – voltage protection only(MIV II 2000: frequency protection only; 3000: combined voltage + frequency protection)
- 0: Voltage range – high range 10–250V(1: low range 2–60V, available only for 1000 models)
- E: Operating language – English(F: French)
- 00: Intermediate placeholder, no configuration meaning
- HI: Power supply type – high-range power supply
- 110–250Vdc (operating range: 88–300Vdc)
- 110–230Vac (operating range: 88–264Vac, 48–62Hz)
- 0: Protective coating – no conformal coating(H: with conformal coating)
Core Protection Functions
- Three-Phase Over/Undervoltage Protection4 independent time-delay over/undervoltage elements.Phase-to-phase or phase-to-ground voltage detection is selectable.Pickup range: 10.0–250.0V (0.1V step)Time delay range: 0–600s (0.01s step)Supports breaker position supervision; undervoltage protection can be disabled when the breaker is open to prevent nuisance tripping.
- Ground Overvoltage Protection2 independent definite-time ground overvoltage elements.Pickup range: 10.0–250.0V (0.1V step)Time delay: 0–600s (0.01s step)Pickup voltage and operating time can be set independently.
- Protection AccuracyVoltage element full-scale accuracy: ±3%Measurement accuracy at rated voltage: ±1%Operating time at 1.2× pickup value, 50Hz: < 30msTiming accuracy: ±3% of operating time or ±30ms (whichever is greater)
Monitoring & Fault Diagnostics
- Electrical Parameter MonitoringReal-time monitoring of primary/secondary values of phase voltage and ground voltage (CT ratio must be preset).Frequency measurement accuracy: ±10mHzVoltage measurement accuracy: ±1% within 50/80V range.
- Event RecordingStores up to 24 event records with millisecond-precise time stamping.Records include element start/operate/reset, digital I/O status changes, self-test events, etc.Each record can be individually masked.Voltage values and all protection element statuses are logged at the time of the event.
- Waveform RecordingSupports analog and digital recording.Sampling rate: 8 samples per cycle.Stores 1 waveform record up to 24 cycles.Trigger sources: element start/operate, external digital input, communication command.Records AC input channels, digital I/O channels, and self-test event data.
- Fault QueryThe last 5 trip fault records can be viewed directly on the front display without a PC, enabling fast on-site fault analysis.

Configuration & Control Features
- Configurable I/O2 digital inputs are user-configurable.Of the 6 digital outputs:
- 2 are fixed (Trip, Service Required)
- 4 are user-programmable, assignable to pre-configured values or their OR/NOT combinations.Each output can be independently blocked.Normally open / normally closed is selectable via jumpers.Outputs 1/2 and 3/4 can be electrically isolated by removing the JX jumper.
- Configurable LEDs6 LED indicators:
- 2 are fixed (READY green, TRIP red)
- 4 are programmable for function, color (red/green), and memory mode (self-reset / latched).All LEDs can be tested by pressing and holding the ESC/RESET key for 3 seconds.Latched status must be reset using the same key.
- Configurable LogicSupports up to 4 custom logic schemes using 4 pre-configured logic gates and timers.Logic outputs can be assigned to output contacts or LEDs.The graphical user interface simplifies configuration.
- Breaker ControlBreaker ON/OFF operation can be achieved by programming specific outputs.Digital inputs verify successful operation.Protection and control functions are fully integrated.

User Interface & Communication
- Local InterfaceFront-facing 2×16 character LCD display for real-time measurement data, fault reports, and parameter settings.5-key keypad supports relay interrogation, parameter modification, baud rate and communication address configuration.
- Communication PortsFront RS232 port and rear RS485 port, both supporting Modbus RTU protocol with baud rates from 300 to 19200 bps.A single communication channel can connect up to 32 GE Multilin devices, each with a unique address.The rear RS485 port can be converted to RS232 or fiber via external converters (e.g., DAC300/F485).
- Software CompatibilityFree EnerVista software for Windows supports real-time device configuration, parameter upload/download, event and waveform review.EnerVista Launchpad enables offline configuration and document management.Viewpoint Monitoring provides centralized multi-device monitoring, trend reporting, and automatic data acquisition.Also compatible with the MultiNet communication module for Modbus RTU to Modbus TCP/IP conversion, allowing connection to Ethernet/fiber networks.
Hardware & Electrical Specifications
1. Power Supply & Inputs
- Power Supply: HI type high-range, supports 110–250 Vdc / 110–230 Vac.Maximum power consumption: 15 W.Date, time and event log memory are backed up for more than 1 week after power loss.
- AC Voltage Input: 10–250 V range, 50/60 Hz ±3 Hz (user configurable).Burden: < 0.2 VA @ 120 Vac.Continuous withstand voltage: 440 Vac.
- Digital Inputs: High-range threshold 75 Vdc, max voltage 300 Vdc, load 5 mA @ 300 Vdc.
2. Output Performance
- 6 electromechanical Type-C output contacts, silver alloy material suitable for inductive loads.
- Contact Ratings:
- Maximum operating voltage: 400 Vac
- Continuous current: 16 A
- Making current: 30 A
- Breaking capacity: 4000 VA
- Breaking and making capabilities meet industrial standards under various voltages at 100,000 operations.
3. Mechanical & Environmental Characteristics
- Mechanical:304 stainless steel enclosure, 1/4 19-inch rack (4 units high), withdrawable structure.Protection degree: IP52.Net weight: 2.7 kg, shipping weight: 3.2 kg.
- Environmental:Operating temperature: -20 °C ~ +60 °CStorage temperature: -40 °C ~ +80 °CHumidity: ≤ 95% non-condensing.
- EMC Performance:Complies with IEC 60255 series.ESD protection: 8 kV contact / 15 kV air.Fast transient, RF interference and other disturbances meet Class IV immunity,suitable for harsh industrial electromagnetic environments.
Applications
- Three-phase over/undervoltage and ground overvoltage protection for generators and motors;
- Voltage monitoring and protection for distribution lines and busbars;
- Voltage anomaly protection for Automatic Transfer Switches (ATS);
- Industrial distribution systems requiring precise voltage monitoring and fault recording.
Core Advantages
- Cost Effective: Integrated event recording and waveform recording reduce troubleshooting time and maintenance costs, with no need for additional diagnostic equipment.
- Flexible Design: Supports custom programming of I/O, LEDs, and logic schemes. Dual setting groups adapt to different operating modes. On-site flash upgrade avoids factory return.
- Data Accessibility: Modbus RTU communication + EnerVista™ software enable local/remote parameter configuration, status monitoring, and data collection. Supports integration into DCS/SCADA systems.
- Safe & Reliable: Password protection for local operation, comprehensive self-test functions, industrial-grade EMC immunity and environmental design ensure stable operation in harsh environments.
- User Friendly: Front keypad and display allow fast on-site operation. The software provides a graphical configuration interface and fault analysis tools, reducing operational complexity.
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