Description
Product Overview
When a protection relay fails to start, resets unexpectedly, or reports an internal power issue, the power supply module is one component that maintenance engineers may need to inspect. The GE Multilin UR1HH is identified as a high-voltage power supply for the Universal Relay family. It supports the relay’s internal power requirements, making correct module identification important for maintaining protection and control equipment in substations and industrial electrical systems.
Before ordering a GE Multilin UR1HH replacement, verify the complete module marking, the relay model, the installed power supply generation, and the available AC or DC source. Supplier references report different voltage descriptions, so a single universal input specification should not be assumed without checking the applicable GE documentation. For redundant-power installations, also review the existing module arrangement: one supplier reference specifically recommends using two modules from the same generation when both power supply positions are populated.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product model | UR1HH |
| Manufacturer | GE Multilin |
| Product type | Universal Relay high-voltage power supply module |
| System family | GE Multilin Universal Relay |
| Input supply | AC or high-voltage DC, depending on the applicable rating |
| AC input rating | Supplier listing reports 100–240 VAC, 50/60 Hz; verify against the module nameplate |
| DC input rating | Supplier references report different DC ranges; confirm the exact permitted range in the GE manual |
| Output voltage | Not conclusively verified for every UR1HH configuration |
| Power rating | Not conclusively verified from authoritative model-specific documentation |
| Operating temperature | Verify using the applicable relay and power supply documentation |
| Installation | Compatible slot or mounting arrangement within the applicable Universal Relay chassis |
| Redundant supply use | Matching power supply generations are recommended when two modules are installed |
| Lifecycle | Legacy generation; confirm current support status |
Important: Some supplier pages report conflicting electrical ratings and output specifications. Do not use an unverified value to select a replacement or energize a module. The original nameplate and applicable GE Multilin manual should take precedence.
Major Features and Advantages
Relay power supply function
The UR1HH provides the power required by the Universal Relay’s internal electronics. A correctly specified replacement can help restore relay operation when the original supply has been diagnosed as faulty. A relay that fails to start, however, may also have problems elsewhere in the system, so supply replacement should follow a fault assessment rather than assumption.
UR1HH
Support for AC and DC station supplies
The UR1HH is listed for high-voltage power supply applications in relay systems that may use AC or DC station power. The precise permissible range depends on the specific module rating. Check the relay nameplate, wiring diagram, and approved installation manual before connecting a supply source.
Compatibility with the Universal Relay architecture
The belongs to the GE Multilin Universal Relay family rather than a general-purpose PLC power supply range. Compatibility must be assessed using the relay chassis, module generation, and installed configuration. A product description that only says “GE power supply” is not sufficient evidence of interchangeability.
Redundant supply planning
Some Universal Relay installations use two power supply modules. A supplier reference recommends matching the generation of both modules where redundancy is implemented. Before replacing only one module, check the relay manual for supported combinations and the site’s redundancy requirements.
Legacy equipment maintenance
The is described as an older-generation product. For maintenance teams operating established protection systems, procurement planning should account for module condition, test evidence, warranty terms, and the availability of an approved alternative. A newer module should not be treated as a direct replacement unless GE documentation confirms compatibility.
Application Scenarios and Common Pain Points
- Substation protection systems: Maintaining power to GE Multilin Universal Relays used for electrical protection and control.
- Industrial power distribution: Replacing a diagnosed faulty relay power supply in an established electrical installation.
- Redundant relay power arrangements: Checking module-generation compatibility when maintaining systems with two power supply positions.
- Legacy spare-parts management: Holding a verified spare for an installed relay configuration when replacement hardware is difficult to source.
Common problems include selecting a module with the wrong input rating, confusing different Universal Relay hardware generations, overlooking the second power supply in a redundant arrangement, and diagnosing a power supply without checking upstream wiring or relay status information.
Related Products
The following models are associated with GE Multilin protection equipment. They are related for system identification and maintenance planning, not confirmed direct substitutes for .
| Model | Product family or role | Distinction |
|---|---|---|
| UR-SH | Universal Relay power supply generation | Newer-generation supply; verify the supported replacement relationship |
| UR-RH | Universal Relay power supply generation | Alternative generation; confirm the exact relay compatibility |
| UR9KH | Universal Relay CPU module | Processing and relay control, not a power supply |
| UR6RH | Universal Relay digital I/O module | Digital signal interface, not a power supply |
| UR8FH | Universal Relay CT/VT module | Current and voltage measurement interface |
| UR7CM | Universal Relay module | Separate relay module function; verify the installed configuration |
| UR8FH / UR9EH | Universal Relay family modules | Different module functions and hardware roles |
The UR-SH and UR-RH references are particularly relevant when evaluating legacy supply support, but a replacement decision should be based on the exact relay model, module generation, and official compatibility documentation.
Engineer’s Guide: Three Checks Before Installation
1. Confirm the exact product identity. Verify the GE Multilin nameplate, model number, relay model, and supply generation. Do not order based on “” alone without confirming that the requested item is the GE power supply rather than another product using the same designation.
2. Match the input supply rating. Check the AC or DC source, frequency where applicable, polarity where required, and the module’s approved input range. Never energize the module using a voltage value copied from an unverified supplier listing.
3. Review redundancy and relay status. If the chassis uses two supplies, check the approved combination and generation requirements. After replacement, follow the approved commissioning procedure and verify relay startup, power status, alarms, and protection-system readiness before returning equipment to service.
Frequently Asked Questions
Q1. What is the GE Multilin ?
It is identified as a high-voltage power supply module for the GE Multilin Universal Relay protection platform.
Q2. What input voltage does the support?
Supplier listings report AC and high-voltage DC input options, but published ranges vary. Use the exact module nameplate and applicable GE documentation to establish the permitted voltage.
Q3. Can be replaced by UR-SH or UR-RH?
Do not assume direct interchangeability from the model names. Confirm compatibility with the exact Universal Relay model and hardware generation using approved documentation. If two supplies are installed, check the supported generation combinations.
Q4. Does provide 24 VDC output?
Some supplier listings describe a 24 VDC output, but the available references do not conclusively establish a universal output rating for every configuration. Verify the official electrical specification before using this value for design or troubleshooting.
Q5. What could cause a relay to remain unpowered after replacing ?
Possible causes include an incorrect input supply, upstream fuse or wiring faults, poor module seating, an incompatible module, or a fault elsewhere in the relay chassis. Follow the approved troubleshooting procedure and avoid replacing additional components without evidence.
Q6. What should be checked when purchasing a used ?
Request photographs of the complete nameplate, module condition, confirmation of the exact model and revision, and a functional test report. Clarify whether the unit is new old stock, used, or refurbished, and what the test actually covered.
Q7. What are the warranty and lead time?
These depend on the individual supplier and stock condition. Confirm availability, dispatch timing, warranty coverage, return terms, and the evidence supporting the module’s tested condition before placing an order.
Procurement recommendation: Treat GE Multilin as a legacy Universal Relay power supply. Confirm the module generation and actual AC/DC input rating before purchase, and use the official relay documentation to approve any alternative generation.
