Description

The GE 369-HI-R-0-0-E-0-E is a high-integrity, microprocessor-based motor protection relay from GE’s Multilin™ 369 series, engineered to safeguard medium- and high-voltage induction motors in demanding industrial environments. This advanced unit integrates comprehensive thermal modeling, differential current monitoring (with external CTs), power metering, and communication capabilities into a single ruggedized platform. Designed for mission-critical applications—from oil & gas compressors to mining conveyors—the GE 369-HI-R-0-0-E-0-E delivers predictive diagnostics, arc-flash mitigation, and seamless integration with modern SCADA and DCS systems.

Application Scenarios

At a North Sea offshore gas platform, a 6.6 kV seawater injection pump motor suffered repeated insulation failures due to undetected phase imbalance and thermal cycling. The legacy electromechanical relay offered no insight beyond trip events. After installing the GE 369-HI-R-0-0-E-0-E, engineers gained real-time thermal capacity tracking, negative-sequence current alerts, and weekly insulation health reports via Modbus TCP. Within six months, unplanned outages ceased, and scheduled maintenance was optimized based on actual motor stress—not calendar intervals. This transformation underscores how the GE 369-HI-R-0-0-E-0-E shifts motor protection from reactive tripping to proactive asset management.

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Technical Principles and Innovative Values

Innovation Point 1: The GE 369-HI-R-0-0-E-0-E features dual thermal models—calculated (based on I²t) and RTD-monitored—allowing cross-verification of winding temperature, critical for motors operating in variable ambient conditions.

Innovation Point 2: Its built-in arc-flash detection uses light-sensing inputs (via optional fiber-optic sensors) combined with overcurrent logic to trigger breaker trips in < 4 ms—mitigating catastrophic switchgear damage.

Innovation Point 3: Unlike basic relays, it performs motor efficiency and energy consumption analysis, enabling sustainability reporting and load optimization without external meters.

In Innovation Point 4: All events—including waveform captures during faults—are time-stamped via IRIG-B or SNTP and archived for forensic analysis, supporting root-cause investigations and NERC compliance.

Application Cases and Industry Value

In a Chilean copper mine, four 4 MW SAG mill motors were protected by the GE 369-HI-R-0-0-E-0-E following repeated bearing failures caused by mechanical binding. The relay’s “jam detection” function—triggered by sudden torque spikes—now initiates controlled shutdowns before mechanical damage occurs. Additional benefits included:

30% reduction in motor rewind costs over two years

Integration with the mine’s OSIsoft PI system via Modbus TCP for real-time motor health dashboards

Automated weekly reports on thermal utilization, enabling dynamic load balancing across mills

Maintenance supervisors noted that the GE 369-HI-R-0-0-E-0-E’s trend logs helped identify a failing gearbox weeks before vibration sensors alarmed—demonstrating its value as an early-warning sentinel.

Related Product Combination Solutions

GE Multilin L90: Line differential relay—complements the 369-HI-R-0-0-E-0-E in feeder protection schemes for motor busbars.

SEL-710: Competitor motor relay—often replaced by the 369-HI-R-0-0-E-0-E during GE ecosystem standardization.

ABB REF615: Feeder protection relay—can coexist in hybrid substations where the 369-HI-R-0-0-E-0-E handles motor-specific logic.

RTD Modules (e.g., GE 369-RTD-12): External 12-channel RTD input adapter—enables direct stator/winding temperature monitoring for the 369-HI-R-0-0-E-0-E.

Fiber-Optic Arc Sensors (e.g., GE AF01): Light-detection probes that connect to the 369-HI-R-0-0-E-0-E for ultra-fast arc-flash response.

GE Enervista UR Setup: Configuration software—provides device programming, event analysis, and firmware updates for the 369-HI-R-0-0-E-0-E.

Rockwell PowerFlex 7000: Medium-voltage drive—often paired with the 369-HI-R-0-0-E-0-E for post-drive motor protection.

Schneider Electric ION9000: Power quality meter—shares data with the 369-HI-R-0-0-E-0-E for holistic motor system analytics.

Installation, Maintenance, and Full-Cycle Support

Installing the GE 369-HI-R-0-0-E-0-E requires precise CT polarity verification, secure grounding of the chassis, and shielded cable routing for analog inputs. For arc-flash detection, fiber-optic sensors must be routed inside switchgear compartments per IEEE 1686 guidelines. Commissioning is simplified through Enervista UR Setup’s guided wizard, which auto-populates motor nameplate data and validates protection settings against IEEE 329 curves.

During operation, the GE 369-HI-R-0-0-E-0-E continuously self-diagnoses—monitoring CT health, internal power supply stability, and memory integrity. Maintenance teams can schedule firmware updates remotely and extract event records without site visits. We rigorously test every unit for dielectric strength (4 kV), EMI immunity (IEC 61000-4 Level 4), and thermal endurance. Our support includes protection coordination studies, cybersecurity hardening (for Ethernet variants), and lifecycle migration paths from legacy GE 369 or 371 relays.

Contact us for a customized solution—whether you’re protecting a critical compressor train, modernizing a legacy motor control center, or implementing predictive maintenance for your rotating assets. With deep expertise in power system protection and decades of field deployment, we ensure your GE 369-HI-R-0-0-E-0-E delivers safety, reliability, and operational intelligence.