Description

1. GE UR-RHH | Traceable Substation Relay Hardware

2. Unboxing & Physical Snapshot

• Brand & Model: GE Multilin URRHH / UR-RHH
• Product Category: Universal Relay Second Generation Power Supply Module
• Application Platform: GE Multilin Universal Relay (UR) family protection and control systems. The UR platform uses a modular architecture with replaceable hardware modules including power supply, CPU, I/O, and communications assemblies.
• Approximate Physical Dimensions: Approximately 6.5 × 6.0 × 2.5 in (165 × 152 × 64 mm), depending on installed relay chassis configuration.
• Estimated Shipping Weight: Approximately 3 lb (1.36 kg) including protective packaging.
• What’s in the Box:
  • GE Multilin UR-RHH power supply module
  • Original anti-static (ESD) shielding bag when supplied from controlled inventory
  • Protective foam packaging
  • Module identification label
  • Documentation when included with OEM packaging

3. Product Introduction

Power supply modules in protection relays are not ordinary auxiliary components. The GE Multilin UR-RHH provides the regulated power source required by compatible UR Series relay systems, supporting relay electronics and associated control functions. A failed or unstable supply module can interrupt protection availability, event recording, and communications performance (which is why spare verification before installation matters).

The UR-RHH installs into the modular UR relay chassis and interfaces internally with the relay backplane. Treat it as a precision electronic assembly. Inspect the module edge connectors, locking features, and enclosure condition before insertion. A clean mechanical fit is required because protection equipment may remain in service for years without intervention.

4. Core Technical Specifications

Parameter	Value
Manufacturer	GE Multilin
Model Number	URRHH / UR-RHH
Product Type	Universal Relay Power Supply Module
Relay Family	GE Multilin UR Series
Module Function	Relay power conversion and distribution
Generation	Second Generation UR Power Supply Module
Input Voltage Range	Depends on ordered supply variant
Typical High Range Option	125-250 V nominal AC/DC (verify exact nameplate)
Low Range Variant	24-48 VDC option available on related configurations
Mounting Method	Internal UR relay module slot
Communication Function	None; power module only
Power Output	System-dependent
Power Consumption	Configuration dependent
Heat Dissipation	Determined by relay load and power conversion losses
Cooling Method	Relay chassis convection airflow
Storage Requirement	ESD-controlled environment

GE UR-RHH

5. Global Compliance & Industry Certifications

Expected regulatory approvals for this class of protection relay hardware may include:

• CE Mark for applicable electromagnetic compatibility and electrical safety requirements.
• UL/cUL Recognition or Listing when installed as part of an approved protective relay assembly.
• ATEX/IECEx consideration when used in hazardous-area installations with a certified system design.
• Marine approvals such as DNV GL when installed in certified offshore or vessel electrical protection systems.

A certified power supply module helps maintain the electrical safety envelope of the complete relay assembly, including insulation coordination and temperature performance during operation.

Verify specific lot certifications with OEM.

6. Long-Term Storage & Asset Preservation Guide

• Keep the UR-RHH sealed in an ESD shielding bag until required. Avoid storing exposed modules near energized equipment, welding areas, or high-static environments.
• Maintain warehouse humidity below 60% RH. Moisture intrusion can affect connector surfaces and internal electronic components over extended storage periods.
• Inspect stored modules every 12-24 months. Check the terminal interface, mounting tabs, label readability, and enclosure condition (older relay spares often fail inventory inspections because packaging deteriorates before electronics do).

7. Physical Installation Prerequisites

• Verify the UR relay chassis model and power supply voltage range before installation.
• Use grounded ESD protection equipment when handling the module.
• Insert the module into the correct UR chassis position and ensure the retaining mechanism is fully secured.
• Maintain approximately 50 mm clearance above and below adjacent cabinet equipment where required for convection cooling.
• Confirm protective earth bonding of the relay cabinet before energizing.
• Verify incoming control power matches the module nameplate rating before startup.

8. Buyer’s FAQ (Logistics & Compliance Focus)

Q: What HS Tariff Code is commonly reviewed for the GE URRHH module?
A: Relay power modules are generally evaluated under electrical control equipment classifications, commonly reviewed around HS 8537 depending on declared function and destination-country customs interpretation.

Q: Does Country of Origin affect import approval for this spare module?
A: Yes. COO documentation supports customs clearance, procurement controls, and lifecycle traceability. Maintain OEM labels, serial information, and supplier records with the asset file.

Q: Should shipping insurance be included for the UR-RHH?
A: Yes. Power supply modules contain sensitive electronic assemblies that can suffer hidden transit damage. Use ESD-safe packaging, impact protection, and declared-value insurance.

Q: Does the URRHH include the latest firmware pre-loaded?
A: No firmware is normally associated with this power supply module. Firmware resides in other UR system components, such as CPU modules. Confirm complete relay configuration compatibility before returning the protection system to service.