UR-RHH Industrial-Grade Power Module for GE Multilin Universal Relay Systems

The UR-RHH Power Supply Module represents GE's commitment to uninterrupted protection relay operation in mission-critical electrical infrastructure. This industrial-grade power module converts wide-range AC/DC inputs into stable 24VDC output, powering GE Multilin Universal Relay platforms across substations, industrial plants, and renewable energy facilities. Designed for harsh environments and continuous duty cycles, the UR-RHH ensures your protection systems remain operational when grid reliability matters most.

Electrical utilities, industrial operators, and system integrators rely on the UR-RHH to eliminate single points of failure in protection architectures. With support for redundant configurations, hot-swappable maintenance, and compliance with international standards including IEC 61850 and IEEE 1613, this module delivers the reliability demanded by critical infrastructure applications.

Whether you're upgrading legacy relay systems, designing new substation protection schemes, or maintaining existing GE Multilin installations, the UR-RHH provides proven performance with minimal lifecycle costs. Its universal input range accommodates diverse station battery voltages, while robust thermal management ensures stable operation from -40°C to +85°C.

Core Features & Business Value

✓ Universal Input Flexibility
Accepts 88-300 VDC or 70-265 VAC inputs, eliminating the need for multiple spare modules across facilities with different station battery voltages. Reduces inventory costs and simplifies procurement for multi-site operations.

✓ Redundant Architecture Support
Enables N+1 power supply configurations with automatic load sharing and seamless failover. Protects against power supply failures that could disable critical protection functions during fault conditions.

✓ Hot-Swappable Maintenance
Replace failed modules without de-energizing relay systems or interrupting protection coverage. Minimizes planned outage windows and maintains continuous asset monitoring during maintenance activities.

✓ Industrial Environmental Rating
Operates reliably in -40°C to +85°C ambient temperatures with >85% efficiency. Withstands substation electromagnetic interference, voltage transients, and harsh industrial conditions without performance degradation.

✓ Standards Compliance
Certified to IEC 61850, IEEE 1613, UL/CSA standards for utility-grade protection equipment. Meets utility specifications for substation automation and protection relay power supplies.

→ Extended Service Life
Industrial-grade capacitors and thermal design deliver 15+ years of maintenance-free operation. Reduces total cost of ownership through extended replacement cycles and minimal field service requirements.

Application Scenarios

Transmission Substation Protection
Powers transformer differential, line distance, and bus protection relays in high-voltage substations. The UR-RHH's wide input range accommodates 125VDC and 250VDC station batteries, while redundant configurations ensure protection remains active during battery charger failures or DC system faults. Utilities deploy UR-RHH modules to maintain protection coverage during station battery maintenance and emergency conditions.

Industrial Power Distribution
Supplies reliable power to motor protection relays, feeder management systems, and generator protection platforms in manufacturing facilities. The module's hot-swap capability allows maintenance during production shifts without interrupting critical motor monitoring. Industrial operators reduce unplanned downtime by eliminating power supply failures as a relay system vulnerability.

Renewable Energy Installations
Enables protection relay operation in solar farms, wind facilities, and battery energy storage systems where AC and DC voltage sources vary. The UR-RHH's universal input accepts power from diverse sources including inverter outputs, battery banks, and auxiliary transformers. Renewable operators standardize on a single power module across mixed-voltage installations.

Retrofit & Modernization Projects
Provides drop-in power supply upgrades for aging GE Multilin relay installations without requiring panel modifications or wiring changes. Backward compatibility with earlier UR series platforms extends the service life of legacy protection investments. Utilities modernize protection systems incrementally while maintaining existing relay configurations.

Marine & Offshore Platforms
Withstands vibration, salt fog, and temperature extremes in shipboard electrical systems and offshore oil/gas platforms. The module's robust construction and wide operating temperature range ensure reliable operation in harsh maritime environments where equipment access is limited and failures are costly.

Technical Parameters & Selection Guide

Selection Criteria:

Choose the UR-RHH when your application requires universal input compatibility across multiple sites, redundant power architecture for critical protection functions, or hot-swap maintenance capability. For applications with stable 24VDC station supplies and non-critical loads, consider simpler fixed-input modules. For relay chassis requiring more than 3A output current, deploy multiple UR-RHH modules in parallel or specify higher-capacity power supplies.

Verify that your relay chassis backplane supports hot-swap power modules before specifying redundant configurations. Consult GE Multilin system integration guides for proper module slot assignments and redundancy wiring practices.

Extended Functions

Remote Monitoring Integration: The UR-RHH provides power supply status signals to relay CPU modules, enabling remote monitoring of power module health through SCADA systems and substation automation platforms. Operators receive advance warning of power supply degradation before failures occur.

Parallel Operation: Multiple UR-RHH modules automatically share load current when installed in redundant configurations. No external load-sharing circuits or manual adjustments are required. The modules balance current within ±10% for optimal thermal performance.

Transient Immunity: Built-in surge suppression and filtering protect against voltage spikes, fast transients, and electromagnetic interference common in substation environments. The module meets IEEE C37.90.1 surge withstand capability requirements without external protection devices.

Diagnostic Indicators: Front-panel LEDs provide instant visual confirmation of input power presence, output voltage regulation, and fault conditions. Maintenance personnel can verify power module status without test equipment during routine inspections.

Delivery & Service Assurance

Standard Delivery: 3-5 business days for in-stock modules via express courier. All units ship factory-tested with calibration certificates and installation documentation.

Custom Configuration: 10-15 business days for special input voltage ranges, conformal coating, or extended temperature ratings. Contact our technical team for custom specification requirements.

Warranty Coverage: 12-month comprehensive warranty covering manufacturing defects, component failures, and workmanship issues. Warranty includes advance replacement service to minimize system downtime.

Technical Support: Unlimited access to application engineers for installation guidance, troubleshooting assistance, and system integration support. Phone and email support available during business hours with 4-hour response commitment.

Documentation Package: Each module includes installation manual, technical specifications, wiring diagrams, and compliance certificates. Digital documentation available for download from our technical library.

Frequently Asked Questions

How do I configure redundant power supplies for maximum reliability?
Install two UR-RHH modules in adjacent power supply slots on your relay chassis. Connect both modules to independent DC sources (separate battery banks or chargers) to eliminate common-mode failures. The modules will automatically share load current and provide seamless failover if one input source fails or a module requires replacement.

What is the typical power consumption of a fully-loaded GE Multilin relay chassis?
A standard UR series relay with CPU, I/O modules, and communication cards typically draws 1.5-2.5A at 24VDC (36-60W). A single UR-RHH module provides sufficient capacity for most configurations. For chassis with extensive I/O expansion or multiple communication modules, verify total current requirements before specifying power supplies.

Can the UR-RHH operate from solar panel or battery inverter outputs?
Yes, the module's wide AC input range (70-265 VAC) accommodates modified sine wave inverters and variable-frequency sources. For DC coupling, the 88-300 VDC input accepts power directly from battery banks, solar charge controllers, and DC-DC converters. Ensure input voltage remains within specified limits during all operating conditions.

What protection features prevent damage during installation errors?
The UR-RHH includes reverse polarity protection, input overvoltage shutdown, output overcurrent limiting, and thermal overload protection with automatic recovery. Short-circuit protection safeguards the module and connected relay equipment. These protections allow safe operation even during wiring errors or fault conditions.

How does the module perform in high-altitude installations?
The UR-RHH operates without derating up to 2000 meters (6560 feet) altitude. For installations above 2000 meters, derate output current by 10% per 1000 meters to maintain thermal performance. Consult factory for applications above 4000 meters or in low-pressure environments.

Is firmware or software configuration required for operation?
No, the UR-RHH is a hardware-only module requiring no firmware updates or software configuration. Simply install the module in the relay chassis power supply slot and apply input power. The relay CPU automatically detects the power module and monitors its status.

Take the Next Step

Ensure uninterrupted protection relay operation with the UR-RHH Power Supply Module. Contact our technical sales team for application-specific recommendations, volume pricing, or custom configuration options. We provide complete system integration support including power budget calculations, redundancy design, and installation planning.

Request a quote today: Share your relay chassis configuration and power requirements for a detailed proposal including delivery timeline and technical specifications.

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