GE

1. Full Product Designation

Full English Name: GE Multilin 369‑HI‑0‑M‑F‑E‑0 Motor Management Relay

Ordering‑code Breakdownicdn.trade…

• 369: Base series of Multilin digital motor‑management protective relay
• HI: Control‑power rating, wide AC/DC supply (50‑300 VDC / 60‑265 VAC)
• 0: No built‑in RTD resistance‑temperature‑detector inputs
• M: Metering package for extended electrical‑quantity measurement
• F: Fiber‑optic communication port
• E: Enhanced I/O and enhanced diagnostic functions
• 0: No harsh‑environment ruggedization option

Note: This is a panel‑mount standalone protection‑and‑control unit. It can perform motor protection, control, measurement and communication without depending on external PLC hardware.

GE Multilin 369‑HI‑0‑M‑F‑E‑0

2. Product Background

369‑HI‑0‑M‑F‑E‑0 belongs to the GE Multilin 369‑series digital motor‑management relay (now part of GE Grid Solutions). It is a widely‑deployed integrated protective device for medium‑and‑low‑voltage three‑phase industrial motors.

It targets high‑power pumps, fans and compressors used in power plants, petro‑chemical plants, water‑treatment and oil‑gas facilities. Original OEM production has reached End‑of‑Life (EOL). Available supplies consist of surplus new stock, pulled‑used and refurbished spare‑parts. Configuration and commissioning are completed via EnerVista 369 software. Implementing ANSI‑standard protection elements, the unit integrates protection, control, metering, fault recording and event logging. It supports local standalone operation as well as remote monitoring via DCS / SCADA systems.

GE Multilin 369‑HI‑0‑M‑F‑E‑0

3. Key Functions

1. Comprehensive motor electrical protection (ANSI‑compliant protection logic) Thermal overload (49), locked‑rotor protection, long‑start‑time protection, phase‑unbalance / single‑phase‑loss protection (46), instantaneous overcurrent (50), time‑delayed overcurrent (51), ground‑fault protection, under‑load protection, over‑/under‑voltage and frequency‑abnormity protection. Embedded motor thermal‑model calculation prevents winding damage caused by repeated frequent starts.
2. Electrical metering & condition monitoring (M metering package) Measures 3‑phase current, voltage, power, power factor and energy consumption. Accumulates motor operating hours and start‑up counts; captures start‑up profiles for motor and mechanical‑load health evaluation.
3. Built‑in control logic Embedded motor start‑stop interlock logic, re‑start inhibit and back‑spin detection. Multiple digital inputs acquire external status signals; multi‑relay outputs implement trip, alarm and local / remote control.
4. Communication & fiber‑optic interface The F option provides fiber‑optic ports with strong immunity against industrial electromagnetic interference. Connects to SCADA / DCS to upload settings, real‑time measurements, alarms and fault‑recorder files.
5. Diagnostics & fault oscillography Sequence‑of‑events logging and fault waveform capture store current‑and‑voltage traces at trip instant for post‑fault root‑cause analysis. On‑board status LED indicators; external HMI display panel is optional for local alarm and parameter viewing.
6. Enhanced I/O (E option) Equipped with multiple isolated digital inputs, relay outputs and analog outputs to satisfy field interlock, alarm and remote‑signal‑transmission requirements.

4. Applications & Purpose

1. Applicable equipment: Industrial three‑phase induction motors and synchronous motors; high‑power pumps, forced‑draft / induced‑draft fans, compressors and agitators for medium‑and‑low‑voltage motor circuits.
2. Target industries: Thermal‑power plants, combined‑cycle power stations, petro‑chemical plants, oil‑gas pumping stations, water‑treatment facilities and heavy‑industry workshops.
3. Operational purpose: Provides full‑scope protection for critical motors. Trips rapidly upon overload, short‑circuit, phase‑loss or ground‑fault events to avoid motor burnout. Performs electrical‑quantity monitoring and start‑stop logic control while uploading motor operational data to host control systems. Fiber‑optic communication is well‑suited for switchgear rooms with heavy electromagnetic interference.
4. Market profile: Critical spare protective device for power and industrial plants, used for retrofit and field‑failure replacement. Operates standalone locally or acts as front‑end motor‑protection‑and‑measurement unit for DCS systems.

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