GE

Product Background

MIF II is a member of GE M‑II modular microprocessor relay family, a cost‑effective all‑in‑one digital feeder protection device for medium‑voltage and low‑voltage distribution systemsGE Vernova. It integrates overcurrent protection, breaker control, metering, event logging and communication into one compact panel‑mount unit, replacing multiple discrete analog relays in traditional power distribution cabinets. This model MIFIIPI51E10HI00 is the 3‑phase‑plus‑ground variant, widely deployed in utility substations and industrial power distribution networks. GE has officially declared MIF‑II series Discontinued (EOL); modern replacement models are GE P14N and 350 series relays. Only surplus original stock, refurbished or aftermarket spare units are available in the industrial spare‑parts marketGE Vernova. It is a standalone panel‑mount device, ready for field installation.

GE Multilin MIF II MIFIIPI51E10HI00 Digital Feeder Protection Relay

Main Functions

1. Comprehensive overcurrent protection Phase and ground Time‑Overcurrent (TOC) / Instantaneous‑Overcurrent (IOC) protection with configurable IAC / EPTAR‑C time‑current curves. Supports cold‑load pickup function to avoid false tripping on system energizationGE Vernova. Thermal image protection for overload thermal damage prevention.
2. Circuit‑breaker control & autoreclosing Built‑in breaker open/close control logic; four‑shot autorecloser function for distribution feeder fault recovery. Breaker‑failure protection and breaker‑health monitoring (KI2 counter) to track breaker operation wear for predictive maintenanceGE Vernova.More products: www.plcva.com
3. Configurable programmable logic & dual setting groups Flexible user‑programmable logic gates; two separate setting groups for easy switching between different operating conditions; password‑protected parameter access for securityGE Vernova.
4. Metering, event recording & oscillography Real‑time measurement of phase/ground currents; millisecond‑time‑stamped event logging (up to 32 events). Analog/digital waveform oscillography for post‑fault disturbance analysis, stores fault records for troubleshootingGE Vernova.
5. Multi‑interface communication Front‑panel isolated RS‑232 port; rear‑side RS‑485 supporting Modbus‑RTU. Compatible with GE EnerVista configuration software for local/remote setting, monitoring and fault data upload to SCADA/DCS systemsGE Vernova.
6. Self‑diagnosis & hardware monitoring Continuous internal self‑test; detects hardware faults, power‑supply anomalies and reports alarm signals. Front‑panel LED indicators show trip, ready, thermal, and fault status for quick field diagnosisGE Vernova.
7. Wide‑range universal control power supply (HI version) Accepts both AC and DC auxiliary power, adapts to diverse power‑system field environments.

GE Multilin MIF II MIFIIPI51E10HI00 Digital Feeder Protection Relay

Applications & Usage

This is a complete standalone digital feeder protection relay, mainly used for primary protection of three‑phase distribution feeders, and can also serve as backup auxiliary protection for transformers, generators, busbars and large‑size motorsGE Vernova.

Typical end‑user industries and scenarios:

• Utility power distribution substations
• Petrochemical, metallurgy, mining, cement and large‑scale industrial plants
• Water‑treatment plants, large‑scale commercial power distribution systems
• Medium‑& low‑voltage power distribution feeders in factory power networks

It can be used for new‑project installation, as well as retrofit replacement for old‑generation analog protection relays.

Understand the lowest price, please contact via email: plcvarious@foxmail.com

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