GE 369-HI-R-0-0-0-0-E

Description

Product Description

The GE 369-HI-R-0-0-0-0-E is a specialized configuration of the GE Multilin 369 Motor Management Relay. This specific model suffix denotes a high-resolution (HI) monitoring relay designed for comprehensive protection, control, and monitoring of large, critical three-phase AC induction or synchronous motors. The GE 369-HI-R-0-0-0-0-E acts as an intelligent electronic device (IED) that replaces multiple discrete components—such as overload relays, phase monitors, and undercurrent relays—with a single, programmable unit. Its primary function is to prevent motor damage from electrical and mechanical faults by continuously analyzing motor current, voltage, and thermal capacity. The “-R” suffix typically indicates a relay-style form factor for panel mounting. By integrating advanced protection with detailed metering and communication capabilities, this relay ensures operational reliability, reduces downtime, and enables predictive maintenance strategies for high-value motor-driven assets like pumps, fans, and compressors.

Technical Parameters and Characteristics

• Manufacturer and Series: GE (now part of ABB), Multilin 369 series.

• Device Type: High-Resolution Motor Management Relay (Panel Mount, Relay Style).

• Key Function: Comprehensive motor protection, monitoring, and control.

• Protection Functions: A wide array of programmable protections, including:

  • Thermal Overload Protection: Models motor heating using current and time, with separate stator and rotor thermal capacity calculations.

  • Electrical Fault Protection: Phase unbalance (negative sequence), undercurrent, overcurrent, locked rotor, jam, short circuit, ground fault (residual or zero-sequence).

  • Mechanical Protection: Starts per hour, time between starts, underpower.

  • System Protection: Under/over voltage, under/over frequency, loss of load.

• Monitoring and Metering (High-Resolution “HI”): Provides detailed, accurate measurements of:

  • Currents & Voltages: True RMS values for all three phases and neutral.

  • Power & Energy: kW, kVAR, kVA, Power Factor, kWh.

  • Thermal Capacity: Real-time percentage used of motor thermal capacity.

  • Motor & Relay Status: Starts count, run time, trip history, relay health.

• Control Functions: Two programmable Form-C output relays for direct control of motor contactors or circuit breakers (Start/Stop, Trip). Multiple programmable digital inputs for commands and statuses.

• Communication: Equipped with serial communication ports (RS-485) supporting protocols like Modbus RTU and GE SRTP for integration into PLC, DCS, or SCADA systems.

• Power Supply: Operates from a standard control voltage (e.g., 24-240 VAC/VDC).

• Display: Includes a backlit LCD for local configuration, real-time data viewing, and event logging.

Advantages and Key Features

• All-in-One Motor Protection: The GE 369-HI-R-0-0-0-0-E consolidates numerous protection functions into one device, simplifying panel design, reducing wiring, and improving reliability.

• Advanced Thermal Modeling: Its accurate motor thermal model provides superior overload protection compared to traditional bimetallic overload relays, preventing premature aging and insulation failure.

• High-Resolution Data for Diagnostics: The “HI” version offers precise metering data, enabling in-depth performance analysis, energy monitoring, and early fault detection (e.g., detecting rising bearing friction via current trend).

• Reduced Downtime: By preventing catastrophic failures and providing clear cause-of-trip information, it allows for faster troubleshooting and repair.

• Seamless Integration: Standard industrial communication protocols allow the 369-HI-R-0-0-0-0-E to seamlessly feed data into plant networks for centralized monitoring and control.

Application Cases in Various Fields

• Water & Wastewater Treatment: Protection of critical raw water, transfer, and wastewater pumps against dry running (undercurrent), jammed impellers, and electrical faults.

• Oil & Gas (Upstream & Midstream): Managing large injection pumps, compressor motors, and fan motors on offshore platforms and pipelines, protecting against load loss and phase unbalance.

• Power Generation (Balance of Plant): Safeguarding induced draft (ID) and forced draft (FD) fans, boiler feed pumps, and cooling water pumps in thermal power plants.

• Mining & Minerals: Protecting crusher motors, conveyor drives, and large slurry pumps from overload, jam, and mechanical stress.

• HVAC for Large Facilities: Monitoring and protecting large chilled water pumps and cooling tower fans in commercial buildings and data centers.

Comparisons with Competing Products (e.g., Siemens SIPROTEC, ABB (formerly GE) Multilin, Schneider Electric Sepam)

• In favor of the GE 369-HI-R-0-0-0-0-E: It is a mature, feature-rich product with a strong reputation, particularly in North American markets. Its focus on detailed thermal modeling and motor-specific diagnostics is a key strength. As part of the GE/ABB family, it integrates well with other GE protection and control devices.

• Points to consider: Competitors offer similar motor protection relays. Siemens SIPROTEC and Schneider Electric Sepam series are also highly capable. The newer ABB (formerly GE) Ability™ series is the successor platform. Selection often depends on existing plant standards, engineer familiarity, and desired integration with a specific PLC or DCS ecosystem.

Selection Suggestions and Precautions

1. Accurate Motor Data Input: The effectiveness of the GE 369-HI-R-0-0-0-0-E depends entirely on correct motor nameplate data entry (FLA, service factor, locked rotor current, thermal time constants). Inaccurate data will lead to improper protection.

2. Proper CT/PT Selection and Wiring: Use current transformers (CTs) with the correct ratio and accuracy class. Ensure wiring to the relay’s current and voltage inputs is correct and secure to guarantee accurate measurements.

3. Tailored Protection Settings: Do not rely on default settings. Each protection element (overload, unbalance, ground fault) must be carefully calculated and set based on the specific motor, driven load, and system characteristics (e.g., grounding).

4. Utilize Communication for Monitoring: To gain full value, connect the relay via Modbus to a supervisory system. This allows for remote monitoring of motor health, load trends, and energy consumption, enabling predictive maintenance.

5. Regular Testing and Maintenance: Incorporate functional testing of the relay’s trip outputs and verification of critical settings into the plant’s preventative maintenance schedule.

6. Source from Authorized Distributors: Purchase the GE 369-HI-R-0-0-0-0-E from authorized GE/ABB distributors or reputable automation suppliers. This ensures you receive a genuine product with the correct firmware, access to configuration software (EnerVista 369 Setup), and technical support.

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