UR1HH Universal Relay Power Module (Industrial-Grade 24V DC Supply)

The UR1HH Power Supply Module is a mission-critical component engineered for GE Multilin Universal Relay platforms, delivering regulated 24V DC power to T60, L90, D60, and F60 protection systems. Designed for utilities, industrial plants, and infrastructure operators requiring uninterrupted protection relay operation, this module combines wide input voltage tolerance with robust electrical isolation to ensure continuous performance in harsh substation and control room environments.

Built to withstand extreme temperature fluctuations (-40°C to +85°C) and electrical transients, the UR1HH addresses critical power reliability challenges in transformer protection, motor control, and feeder management applications. Its hot-swappable architecture enables maintenance without system downtime, while 2.3kV isolation safeguards sensitive relay electronics from voltage surges and ground faults.

Whether you're upgrading legacy protection systems or deploying new Universal Relay installations, the UR1HH provides the foundation for dependable power distribution. Compatible with redundant configurations and global voltage standards, this module ensures your protection infrastructure remains operational 24/7/365.

Core Features & Benefits

✓ Universal Input Compatibility (90-300V AC/DC)
Adapts seamlessly to diverse power systems worldwide, eliminating the need for multiple SKUs across international installations. Supports both AC and DC auxiliary power sources commonly found in substations and industrial facilities.

✓ Hot-Swappable Maintenance
Replace failed modules during live operation without interrupting protection functions. Reduces planned downtime to zero and enables proactive maintenance scheduling without service windows.

✓ Enhanced Electrical Isolation (2.3kV)
Protects downstream relay components from transient overvoltages and ground potential differences. Meets stringent utility and industrial safety standards for high-voltage environments.

✓ Compact DIN Rail Design
Optimizes panel space utilization with a 120mm × 95mm × 65mm footprint. Standard DIN rail mounting simplifies installation and allows flexible cabinet layout configurations.

✓ Extended Temperature Range
Operates reliably from -40°C to +85°C without derating, supporting outdoor enclosures, unheated buildings, and high-ambient industrial zones. Convection cooling eliminates fan maintenance.

✓ Visual Diagnostics
Integrated LED indicators provide instant status feedback for output voltage, overload conditions, and input power presence. Accelerates troubleshooting and reduces mean time to repair (MTTR).

Typical Application Scenarios

→ Transformer Protection Systems
Powers differential, overcurrent, and thermal protection relays in utility substations and industrial distribution transformers. Ensures continuous monitoring of oil temperature, winding currents, and fault conditions. Ideal for installations requiring compliance with IEEE C37.91 and IEC 60255 standards.

→ Motor Control Centers
Supplies reliable DC power to motor protection relays monitoring thermal overload, phase imbalance, and ground fault conditions. Supports critical motors in water treatment plants, HVAC systems, and manufacturing lines where unexpected shutdowns cause production losses.

→ Feeder Protection & Distribution Automation
Enables intelligent feeder management in smart grid applications, powering relays that coordinate reclosing sequences, fault location, and load shedding. Integrates with SCADA systems for remote monitoring and control.

→ Generator Protection & Synchronization
Provides stable power for generator protection relays managing reverse power, loss of excitation, and out-of-step conditions. Critical for cogeneration facilities, backup generators, and renewable energy installations.

→ Redundant Power Architectures
Deploys in N+1 configurations alongside additional UR-series power modules to eliminate single points of failure. Ensures protection system availability exceeds 99.99% in mission-critical infrastructure.

Technical Parameters & Selection Guide

Selection Criteria: Calculate total current draw from all connected relay modules (CPU, I/O, communication cards). For systems exceeding 2.0A, implement redundant power supplies or upgrade to higher-capacity models. Verify input voltage availability at installation site matches 90-300V range. For outdoor or extreme-temperature applications, confirm enclosure provides adequate ventilation for convection cooling.

Extended Functions

Redundant Power Configuration
The UR1HH supports parallel operation with additional power modules for N+1 redundancy. Automatic load sharing and diode-OR output protection prevent backfeed during single-module failure. Configure with URRHH or UR7HH modules for critical applications requiring zero downtime.

Remote Monitoring Integration
When paired with Universal Relay CPU modules featuring Modbus or DNP3 communication, power supply status can be monitored via SCADA systems. Alarm outputs signal low voltage or overload conditions for proactive maintenance.

Customization Options
Factory-configured variants available for specialized voltage ranges, conformal coating for corrosive environments, and extended temperature screening. Contact technical support for application-specific requirements.

Delivery & Service Assurance

Lead Time: Standard stock items ship within 1-3 business days. Custom configurations require 4-6 weeks manufacturing lead time. Expedited shipping available for emergency replacements.

Warranty Coverage: Comprehensive 12-month warranty covers defects in materials and workmanship. Extended warranty programs available for critical infrastructure applications.

Technical Support: Expert application engineers provide pre-sales consultation, system design review, and post-installation troubleshooting. Access to GE Multilin technical documentation, wiring diagrams, and configuration tools included.

Documentation Package: Each unit ships with installation manual, dimensional drawings, terminal connection diagrams, and compliance certificates. Digital resources available via manufacturer portal.

Frequently Asked Questions

Q: What is the maximum cable length between the UR1HH power supply and connected relay modules?
A: Recommended maximum cable run is 10 meters using 18 AWG wire to minimize voltage drop. For longer distances, increase wire gauge to 16 AWG or implement local power distribution.

Q: Can the UR1HH operate from solar panel or battery backup systems?
A: Yes, the wide 90-300V DC input range accommodates battery banks (96V, 110V, 125V, 220V nominal) and solar charge controllers. Ensure input voltage remains within specification during battery discharge cycles.

Q: How do I calculate total power budget for a multi-module Universal Relay system?
A: Sum current consumption of CPU module (typically 0.8-1.2A), I/O modules (0.3-0.5A each), and communication cards (0.2-0.4A). Add 20% safety margin. If total exceeds 2.0A, deploy redundant UR1HH modules.

Q: Is the UR1HH compatible with legacy GE Multilin relay platforms like SR series?
A: The UR1HH is optimized for Universal Relay (UR) platforms. For SR469, SR489, and SR750 relays, verify compatibility with GE technical support or use dedicated SR-series power supplies.

Q: What maintenance procedures are recommended for the UR1HH?
A: Inspect terminal connections annually for tightness. Verify LED indicators show normal operation. Clean ventilation openings if dust accumulation is visible. No internal maintenance required due to sealed construction.

Q: Does the module include surge protection for lightning-prone installations?
A: Internal transient suppression handles typical switching surges. For substations with high lightning exposure, install external surge arrestors on AC input lines per IEEE C62.41 guidelines.

Ready to Secure Your Protection System Power?

Ensure uninterrupted relay operation with the UR1HH Power Supply Module. Our technical team is ready to assist with system design, compatibility verification, and volume pricing for multi-site deployments. Contact us today for expert consultation and fast delivery.

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