Description
3. Key Technical Specifications
- Product Type: Power Supply Module
- Power Rating: 35 W / 35 VA
- Input Voltage: 88-250 V DC or 100-240 V AC
- Output: Provides internal relay power rails
- Compatibility: Multilin UR series chassis
- Mounting: Plug-in power supply slot
- Design: Redundant capable in some configurations
- Efficiency: Optimized for industrial duty
- Protection: Internal overvoltage and short circuit protection
- Application: Powers UR relay processor and I/O modules
4. Product Introduction & Supply Chain Strategy
The GE URRHH is a power supply module for the Multilin UR series relays. It converts station AC or DC supply into the stable voltages required by the relay processor, I/O modules, and communication interfaces.
New Surplus URRHH units offer a practical way to maintain UR relay availability while controlling inventory costs. Power supplies are among the most failure-prone components in protection systems, making 1-2 on-site spares a smart insurance policy. This supports Total Cost of Ownership goals by reducing emergency lead times and avoiding the shorter service life typical of refurbished power modules.
- URRHH
- URRHH
5. Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety) Lock-out and tag-out all power sources to the UR chassis. Wear an ESD wrist strap. Note the existing power supply wiring and slot position with photographs.
Stage 2: Removal De-energize the relay. Release the power module latches and slide the old URRHH out of its dedicated slot.
Stage 3: Installation (Clone & Seat) Insert the new URRHH module into the power supply slot. Ensure it seats fully and latches engage. Reconnect any external power wiring.
Stage 4: Power-On & Testing Apply input power and monitor the relay boot sequence. Check all status LEDs and confirm the relay recognizes stable internal voltages. Verify no power-related alarms.
6. Firmware/Software Versions & Upgrade Notes
Power supply modules like the URRHH do not contain firmware. Relay operation depends on the main CPU firmware version.
Keep the UR relay firmware current and compatible with your overall system. Power supply replacement does not normally require firmware changes, but always validate full relay operation including protection elements after installation.
7. Frequently Asked Questions (FAQ)
Q: Is the URRHH a New Surplus power supply? Yes. This is genuine New Surplus stock in original condition. It receives quality checks but is not refurbished.
Q: Why use New Surplus for UR power modules? Reliable power delivery is fundamental to protection system uptime. New Surplus units provide full design life expectancy versus the variable condition of refurbished supplies.
Q: What risks do refurbished URRHH modules carry? Degraded capacitors or voltage regulation components can cause intermittent failures or complete loss of relay power, leading to unprotected feeders or buses.
Q: Is the UR series power supply obsolete? UR components continue to support installed bases, but proactive spares management is essential. New Surplus buffer stock prevents long outages from power supply issues.
Q: Can the power module be replaced while the relay is running? In redundant power configurations it may be possible, but standard practice requires isolating the chassis. Test all functions after replacement.
Q: What warranty applies? We offer a 1year warranty on this New Surplus URRHH module.
Q: How do I verify the new power supply? After installation, confirm the relay powers up normally. Monitor voltage status in the HMI and run self-diagnostics. Check that all I/O modules and communications function correctly.
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