Description
The GE Multilin UR-1HH is a high-range auxiliary power supply module designed specifically for the Universal Relay (UR) platform. Engineered to provide reliable and regulated internal operating voltages, this plug-and-play module converts primary substation control power into stable DC rails required by the relay’s CPU, measurement boards, and input/output modules.
📊 Technical Specifications
- Brand: GE Multilin (General Electric)
- Model / Part Number: UR-1HH (High-Range Power Supply)
- Series: Multilin Universal Relay (UR) Platform
- Product Name: High-Voltage Power Supply Module
- Manufacturing Status: Mature / Active Industrial Protection Spare Part
- Dimensions: Standard UR internal slide-in module profile (approx. 15 cm x 18 cm x 4 cm)
- Weight: Approx. 1.15 kg (2.5 lbs)
- Country of Origin: Canada / USA
- Input Voltage Ratings:
- DC Range: 125 VDC to 250 VDC nominal
- AC Range: 100 VAC to 240 VAC, 50/60 Hz
🛠️ Operation Guidelines & Installation
Installation and replacement must be performed strictly by qualified electrical substation technicians or protection engineers. Before attempting to slide out or insert any internal UR module, ensure that auxiliary control power to the relay chassis is completely disconnected and isolated to prevent equipment damage, data corruption, or personal injury. Wear an anti-static grounding wrist strap (ESD protection) when handling internal electronics. Always replace power modules with exact like-for-like voltage specifications (matching high-range to high-range slots).
🔌 Power-Up and Power-Down Sequence
Verify that all terminal wiring harnesses and rear-chassis power connections are firmly secured before energizing the cabinet. Apply the rated high-range auxiliary supply (125–250 VDC / 100–240 VAC) to initialize the module. Observe the front-panel LED indicators on the relay display interface to confirm that internal health diagnostics report a normal, stable power status. For shutdown, isolate the external auxiliary feed prior to performing any hardware maintenance.
📝 Product Usage Instructions
The UR-1HH module operates passively once installed, continually converting facility control power to support advanced protection, automation, and communication applications within the UR relay ecosystem. Utilize GE’s EnerVista UR software suite to monitor system logs, check power supply health diagnostics, and review internal event records. Keep the switchgear environment clean, dry, and thermally regulated.
❓ Common Questions (Q&A)
Q: What is the difference between the UR-1HH and low-range (UR-1LL) power supply modules?
A: The UR-1HH is designed for high-range AC/DC control voltages (100–240 VAC / 125–250 VDC), whereas low-range modules are restricted to lower DC control voltages (such as 24–48 VDC).
Q: Can the power supply module be hot-swapped while the relay is live?
A: No. Control power must be completely removed from the unit before removing or inserting modules to avoid electrical hazards and potential internal component damage.
Q: How does the relay monitor the health of the power supply?
A: The UR system features built-in self-testing diagnostics that continuously evaluate supply rails, triggering major or minor alarm flags via faceplate LEDs and EnerVista software if an anomaly is detected.
🚀 Recommended Related Models
- GE Multilin UR-1LL (Low-Range Power Supply Module – 24/48 VDC)
- GE Multilin UR-RHH (Redundant High-Range Power Supply Module)
- GE Multilin D60 Line Distance Protection System
- GE Multilin G30 Generator Protection Relay
- GE Multilin T60 Transformer Protection System
- GE Multilin F60 Feeder Protection System
- GE Multilin EnerVista Launchpad Communication Hub
- GE Multilin UR-CPU Microprocessor Module
- GE Multilin UR-COM Communications Switch Module
- GE Multilin UR-DEM Digital Expansion Module
