The GE 369-HI-R-0-0-0-E is a fully-featured digital motor management relay from GE’s (now part of ABB) renowned Multilin™ 369 series, specifically configured as a high-current (“HI”) input version. This device is a comprehensive electronic controller and protector designed for medium to large three-phase AC induction and synchronous motors. It transcends the role of a simple overload relay by integrating advanced motor protection, extensive performance monitoring, and basic control functions into a single, robust unit. The GE 369-HI-R-0-0-0-E continuously monitors motor electrical parameters—such as current, voltage, and derived values like thermal capacity—to safeguard against a wide array of faults including thermal overload, locked rotor, excessive starts, current unbalance, short circuits, and ground faults. Its primary mission is to prevent motor burnout and catastrophic failure, thereby avoiding costly unplanned downtime, repair expenses, and production losses in critical industrial processes.
As a core component of modern motor control centers (MCCs) and switchgear, the GE 369-HI-R-0-0-0-E delivers significant value through its intelligence and connectivity. It provides detailed metering information, including kWh consumption, power factor, and demand, which are crucial for energy management initiatives. The inclusion of a real-time clock allows for time-stamped event recording, enabling precise analysis of trip events and motor performance trends. With its standard communication port (implied by the suffix “-E”), it can seamlessly integrate into plant networks using protocols like Modbus, facilitating remote monitoring and data acquisition for predictive maintenance strategies. For maintenance and operations personnel, this relay transforms a motor from a simple piece of rotating equipment into a smart, communicative asset, providing deep visibility into its health and operational efficiency.
Technical Specifications
Parameter Name
Parameter Value
Product Model
GE 369-HI-R-0-0-0-E
Manufacturer
GE Multilin™ (now part of ABB)
Product Type
Digital Motor Management Relay
Current Input Range
High Range (“HI”), accepts 5A secondary current from standard Current Transformers (CTs)
Voltage Input
Supports voltage input via Potential Transformers (PTs) for full protection & metering (e.g., phase loss, under/over voltage)
Protection Functions
Thermal Overload (I²t curve), Locked Rotor / Stall, Short Circuit (Instantaneous & Time-Delayed), Ground Fault (50:0.2-2.0A adjustable), Current Unbalance, Underload, Jam, Excessive Starts, Start Time Supervision
Measurement Parameters
True RMS Phase Currents, Average Current, Ground Current, % Thermal Capacity Used, Voltage (with PTs), kW, kVAR, kVA, Power Factor, kWh, kVARh
1 x RS-485 serial port (supports Modbus RTU protocol) – denoted by the “-E” suffix
Real-Time Clock
Battery-backed for time-stamping of events
Display
Backlit LCD with status, measured values, and event log
Power Supply
Typically 85-265V AC/DC or 24-48V DC (specifics determined by final suffix codes)
Enclosure
Industrial, designed for DIN-rail or panel mounting
Standards
UL 508, CSA, CE, IEC
Key Features and Advantages
The GE 369-HI-R-0-0-0-E offers a powerful blend of reliable protection and operational insight. Its cornerstone is a sophisticated thermal model protection algorithm. Unlike simple bimetallic overloads, this model accurately calculates the heat generated within the motor based on current, accounting for cooling during off periods and the extra heating during starts. This prevents nuisance tripping during legitimate high-inertia starts while ensuring the motor is protected from dangerous overheating, ultimately extending motor life.
369-HI-R-M-0-0-0-0
Advanced diagnostics and metering capabilities are integral to its value proposition. The relay acts as a multi-function meter, providing precise data on energy consumption (kWh), power factor, and demand. This information is vital for identifying inefficient motors, optimizing load profiles, and supporting energy savings programs. The time-stamped event log records the last several trips with details like cause, motor current, and thermal capacity at the time, dramatically speeding up post-fault troubleshooting. The programmable logic and flexible I/O allow it to replace traditional auxiliary relays for implementing control sequences like auto-reset, alarm escalation, or permissive starts, reducing panel hardware and wiring.
Connectivity and ease of use enhance its practicality. The built-in Modbus RTU communication (“-E” suffix) allows the relay to be integrated into SCADA, DCS, or building management systems, enabling centralized monitoring of motor status and health. The intuitive, menu-driven backlit LCD interface provides local access to all settings, real-time data, and diagnostics without the need for a PC. Its rugged industrial design ensures reliable operation in harsh environments with wide temperature ranges and significant electrical noise. For facilities managing numerous motors, the GE 369-HI-R-0-0-0-E provides a standardized, feature-rich platform that simplifies maintenance, improves reliability, and delivers a strong return on investment through avoided downtime and energy insights.
Application Areas
The GE 369-HI-R-0-0-0-E is ideally suited for protecting and monitoring critical motors across a vast spectrum of industries. In water and wastewater treatment plants, it is a standard choice for large pumps (raw water intake, clean water boost, sludge transfer) and aeration blowers, where motor failure can disrupt service to entire communities.
Within manufacturing and processing industries such as chemical, food & beverage, and pulp & paper, it safeguards motors driving mixers, conveyors, compressors, fans, and extruders. Its jam protection is particularly useful for detecting mechanical blockages on conveyors. In HVAC systems for large commercial buildings, hospitals, and data centers, it protects critical chillers, cooling tower fans, and large air handling units, with its metering aiding in energy management.
For mining and aggregate processing, the relay is deployed on crushers, ball mills, and heavy-duty conveyors that face high starting torque and abrasive conditions. Its robust protection against current unbalance and stall is essential here. In oil & gas operations, it is used on pipeline pumps, offshore water injection pumps, and compressor auxiliaries. Its communication capability allows for remote monitoring of these often-unattended sites. Essentially, any 3-phase AC motor that is expensive, difficult to replace, or critical to continuous process flow is a prime candidate for the protection and intelligence offered by the GE 369-HI-R-0-0-0-E.
Related Products
GE 369-LO-R-0-0-0-E: The “Low” current range version, designed for 1A CT secondaries, used with different CT ratios.
GE 369-HI-R-M-0-0-H-E: A more fully-configured variant, likely including RTD inputs for direct motor temperature monitoring (“-M”) and a higher-output power supply (“-H”).
GE 369 (non-“E” versions): Base models without the factory-enabled communication port.
GE Multilin™ 469 Motor Management Relay: The next-generation successor with a larger color display, enhanced communications (EtherNet/IP, Modbus TCP), and more advanced features.
GE Multilin™ 269 Plus Relay: A simpler, more cost-focused motor protection relay for smaller or less critical motors.
Current Transformers (CTs): Essential external sensors sized to the motor’s full-load current, providing the 5A secondary signal to the “HI” input of the relay.
GE QuickSet™ Windows Software: The configuration and monitoring software for setting up protection curves, I/O logic, and retrieving data from the 369 relay.
Communication Gateways: Devices that can connect multiple Modbus RTU devices (like the 369) to an Ethernet network for integration into higher-level systems.
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