GE 369-HI-R-M-0-0-H-E Digital Motor Management Relay
Parameter Name
Parameter Value
Product Model
GE 369-HI-R-M-0-0-H-E
Manufacturer
GE Multilin™ (now part of ABB)
Product Type
Digital Motor Management Relay (High-Current Version)
Motor Compatibility
3-Phase AC Induction & Synchronous Motors (Typically for High Voltage or Large LV Motors)
Current Input
5A secondary from Current Transformers (CTs) — High Range (HI)
Voltage Input
Up to 690V AC line-to-line via Potential Transformers (PTs) — Standard (implied by model)
Protection Functions
Thermal Overload (I²t with cooling), Stall/Start Protection, Current Unbalance, Short Circuit, Ground Fault (Sensitive & Instantaneous), Under/Overload, Under/Overvoltage, Under/Overfrequency, Power Factor, RTD Inputs for Temp.
The GE 369-HI-R-M-0-0-H-E is a highly sophisticated, digital, multi-function motor management relay, specifically the 369-HI model from GE’s (now part of ABB) Multilin™ 369 series. This device represents the pinnacle of intelligent motor protection, integrating comprehensive protection, advanced monitoring, diagnostics, and control capabilities into a single unit designed for large, high-voltage, or critical medium-voltage induction and synchronous motors. Far exceeding the capabilities of a simple overload relay, the GE 369-HI-R-M-0-0-H-E functions as a dedicated motor controller and guardian. It continuously analyzes motor current, voltage, temperature, and other critical parameters to detect a wide array of potentially damaging conditions, including thermal overload, stall, starting faults, current unbalance, ground faults, and under/overvoltage. Upon detecting a fault, it can initiate a trip command to the motor breaker or contactor, preventing catastrophic failure and costly downtime.
The suffix code «-R-M-0-0-H-E» details its specific configuration: likely indicating specific input ranges, communication options, output contact configurations, and power supply. Its value lies in its depth of functionality. It not only protects but also provides detailed metering (kW, kVAR, kVA, PF, kWh), extensive I/O for control logic, and powerful communications (Modbus, Ethernet). The GE 369-HI-R-M-0-0-H-E supports advanced features like load jam protection, undercurrent (loss of load), and bearing temperature monitoring via RTDs. For engineers and maintenance teams, this relay transforms motor management from reactive to predictive by delivering actionable intelligence on motor health, enabling condition-based maintenance, optimizing energy usage, and ensuring the reliability of the most demanding motor-driven assets in industries like mining, water treatment, and power generation.
Technical Specifications
Parameter Name
Parameter Value
Product Model
GE 369-HI-R-M-0-0-H-E
Manufacturer
GE Multilin™ (now part of ABB)
Product Type
Digital Motor Management Relay (High-Current Version)
Motor Compatibility
3-Phase AC Induction & Synchronous Motors (Typically for High Voltage or Large LV Motors)
Current Input
5A secondary from Current Transformers (CTs) — High Range (HI)
Voltage Input
Up to 690V AC line-to-line via Potential Transformers (PTs) — Standard (implied by model)
Protection Functions
Thermal Overload (I²t with cooling), Stall/Start Protection, Current Unbalance, Short Circuit, Ground Fault (Sensitive & Instantaneous), Under/Overload, Under/Overvoltage, Under/Overfrequency, Power Factor, RTD Inputs for Temp.
True RMS Current, Voltage, kW, kVAR, kVA, PF, kWh, kVARh, Motor Thermal Capacity, Starts/Hour, Run Time
Communication Ports
(Configuration dependent) Typically: 1x RS-485 (Modbus RTU), 1x Ethernet (Modbus TCP/IP), 1x USB for local config
RTD Inputs
Supports up to 6 RTDs (for stator & bearing temp)
Display
Backlit LCD with Real-Time Data, Status, and Event Log
Power Supply
85-265 V AC/DC or 20-60 V DC (specific to suffix)
Enclosure
Heavy-duty, DIN-rail or Panel Mount
Key Features and Advantages
The GE 369-HI-R-M-0-0-H-E is distinguished by its advanced thermal modeling and comprehensive protection suite. Its core is a highly accurate motor thermal model that accounts for heating during starts and running, as well as cooling during stops. This provides precise overload protection tailored to the specific motor, preventing nuisance trips while ensuring safe operation. Beyond standard overloads, it offers specialized protections like start protection and stall detection, which guard the motor during the high-stress acceleration phase, and current unbalance protection, which mitigates damage from phase loss or voltage imbalance.
369-HI-R-M-0-0-0-0
Extensive diagnostic and monitoring capabilities are a cornerstone of its value. The relay provides detailed metering of all key electrical parameters, acting as a high-accuracy energy and power quality meter. It continuously monitors up to six Resistance Temperature Detectors (RTDs) for direct motor winding and bearing temperature measurement, offering the most reliable thermal protection. The built-in event recorder with time-stamping captures the sequence of events leading up to a trip, while the waveform capture feature records current and voltage during faults, enabling rapid root-cause analysis and reducing mean-time-to-repair (MTTR).
Flexible integration and control make it a central motor management node. With programmable logic, multiple digital inputs/outputs, and support for various starting methods, it can replace traditional hardwired control circuits. Its dual communication ports (Modbus RTU and TCP/IP) allow seamless integration into SCADA, DCS, or plant-wide asset management systems (like ABB Ability™), enabling remote monitoring, data trending, and centralized alarm management. This connectivity transforms the GE 369-HI-R-M-0-0-H-E from a protective device into a critical source of operational intelligence for predictive maintenance strategies.
Application Areas
The GE 369-HI-R-M-0-0-H-E is engineered for the protection and management of large, critical, and high-value motors where unplanned downtime carries significant financial or safety risks. In water and wastewater treatment, it is essential for protecting large raw water intake pumps, high-head clean water pumps, and aeration blower motors, ensuring continuous community service.
Within mining and minerals processing, it safeguards critical motors driving ball mills, crushers, conveyor systems, and slurry pumps—equipment subject to heavy loads and harsh conditions. Its stall and jam protection are vital for these applications. In power generation, the relay is used for boiler feed pumps, induced draft (ID) and forced draft (FD) fans, and circulating water pumps, where motor failure can lead to unit shutdown.
For oil & gas applications, it protects gas compressors, pipeline pumps, and offshore water injection pumps. Its robust construction and comprehensive protection are key for remote and unmanned facilities. In HVAC for large complexes like data centers or airports, it manages large chiller and cooling tower fan motors. Its energy metering capabilities also support efficiency initiatives. Essentially, the GE 369-HI-R-M-0-0-H-E is the solution of choice for any medium-voltage or large low-voltage motor that is capital-intensive and critical to continuous process operation.
Related Products
GE 369-LO-R-M-0-0-H-E: The «Low-Range» (LO) version of the same relay, designed for 1A CT secondary current, used with different CT ratios.
GE 369 Motor Management Relay (other variants): The base 369 series with different feature sets (e.g., 369 without «-HI» may have fewer RTD inputs or comms options).
GE Multilin™ 469: The next-generation motor management relay from GE/ABB, offering enhanced graphics, more connectivity options (EtherNet/IP), and advanced features.
GE Multilin™ 869: A high-end motor protection relay with even more advanced protection (e.g., differential) and extensive communications for the largest and most critical motors.
Current Transformers (CTs) & Potential Transformers (PTs): The external sensors required to provide scaled current and voltage signals to the 369-HI relay.
RTDs (Pt100 or similar): The temperature sensors installed in motor windings and bearings, connected to the relay’s RTD input module.
GE QuickSet™ Software: The PC-based configuration and monitoring software used to set up, analyze data from, and troubleshoot the 369-HI relay.
Communication Gateway (e.g., GE SGR-1000): A device that can aggregate data from multiple 369 relays into a single network connection for a SCADA system.
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