Description

The GE UR6CH is a sophisticated protective relay from General Electric’s Multilin Universal Relay (UR) series, engineered to deliver unparalleled motor protection and control for industrial automation systems. As a cornerstone of GE’s legacy in electrical protection technology, the GE UR6CH integrates advanced monitoring, diagnostics, and fault management capabilities in a single compact unit. This relay excels in safeguarding medium-voltage motors (typically 2.3–13.8 kV) against complex electrical faults, including phase imbalances, thermal overloads, ground faults, and start-up anomalies. Its modular architecture allows seamless customization through plug-in communication and I/O modules, making it adaptable to diverse system architectures.

Designed for mission-critical environments, the GE UR6CH combines robust hardware with GE’s proprietary FlexLogic™ programmable software, enabling engineers to create custom protection schemes without external PLCs. The relay features dual Ethernet ports for redundant networking, real-time oscillography, and comprehensive event logging with time synchronization via IRIG-B. As part of GE’s globally trusted Multilin platform, the GE UR6CH significantly reduces unplanned downtime while extending equipment lifespan through predictive analytics and condition-based maintenance insights.

GE UR6CH

Technical Specifications

Main Features and Advantages

The GE UR6CH delivers exceptional motor protection through its dynamic thermal modeling, which continuously calculates motor temperature using real-time load data and ambient conditions. This prevents insulation damage during overloads or frequent starts. Its patented torque control algorithm minimizes mechanical stress during start-up, extending motor life by up to 30%. The relay’s high-speed sampling (64 samples/cycle) captures transient faults undetectable by conventional devices.

Advanced Diagnostics and Connectivity: Integrated sequence of events (SOE) recording with 1 ms resolution provides forensic analysis of faults, while power quality monitoring tracks harmonics, voltage sags, and swells. The dual Ethernet ports support device-level ring (DLR) topologies for network redundancy, and IEC 61850 compatibility enables seamless integration with modern SCADA systems. GE’s Enervista™ UR Setup software simplifies configuration via drag-and-drop logic, reducing commissioning time by 50%.

User-Centric Design: The GE UR6CH features a high-contrast LCD with multilingual support and an intuitive menu structure for local operations. Its hot-swappable modules allow field upgrades without system shutdowns. The relay’s hardware is hardened against EMI/RFI interference and rated for severe environments, including high-vibration zones.

Application Field

The GE UR6CH excels in heavy industries where motor reliability directly impacts operational continuity. In mining, it protects critical conveyor drives and crusher motors from torque spikes and bearing failures, withstanding dust and humidity extremes. For oil and gas applications, the relay safeguards offshore platform compressors and pipeline pumps, offering Class I Div 2 certifications for hazardous areas. Its vibration-tolerant design suits refinery environments with high mechanical stress.

In water treatment facilities, the GE UR6CH prevents pump damage from dry-running or cavitation through advanced flow correlation algorithms. Power generation plants utilize it for boiler feed pumps and ID/FD fans, leveraging its load-cycling analytics to optimize maintenance schedules. The relay also serves in manufacturing automation, protecting extruders and high-inertia machinery where unbalanced voltages cause premature winding failures.

Related Products

GE UR5CH: Compact motor relay for low-voltage applications (<1>

GE UR7CH: Enhanced model with arc-flash detection and breaker control capabilities.

GE C60: Multifunctional protection relay for transmission lines and transformers.

GE F60: Feeder protection relay with integrated fault location.

GE B30: Bus differential relay for switchgear protection.

GE L90: Line differential relay for high-voltage grids.

GE 469: Motor management relay with integrated HMI for standalone operations.

GE T60: Transformer protection system with harmonic restraint.

GE UR6CH

Installation and Maintenance

Pre-installation preparation: Verify environmental conditions align with the GE UR6CH‘s operating specifications, particularly temperature and humidity ranges. Ensure proper clearance around ventilation slots and confirm DIN rail or panel mounting surface flatness (<1>

Maintenance recommendations: Perform quarterly IR thermal scans on relay terminals to detect loose connections. Annually calibrate protection settings using secondary injection testing and validate communication health via SNR diagnostics. Retain event logs after critical incidents for root-cause analysis. For firmware updates, download only GE-signed files and maintain configuration backups on encrypted USB drives. Replace backup batteries every 5 years to preserve event data during outages.