Description

GE Multilin URSHB UR-SHB High-Voltage Power Supply Module

The GE Multilin URSHB, also designated as the URSHB High-Voltage Power Supply Module, operates as a dedicated hardware component for regulated DC power conversion within GE Multilin Universal Relay (UR) platforms. It converts external AC/DC auxiliary sources into internal relay supply buses.

Hardware Specifications

Parameter	Specification
Model	URSHB (UR-SHB)
Brand	General Electric (GE Grid Solutions / Multilin)
Weight	0.8 lbs
Dimensions	8.2 cm x 12.2 cm x 6.0 cm
Operating Temp	-40 deg C to +60 deg C
Power Consumption	Approx. 0.75 A max current input
Module Type	High-Voltage Power Supply Module
Compatible Platform	GE Multilin Universal Relay (UR) Series
Installation Method	Plug-and-play modular slide-in unit
DC Input Voltage	110 - 250 VDC nominal; 88 - 300 VDC operating range
AC Input Voltage	100 - 240 VAC, 50/60 Hz nominal; 88 - 265 VAC operating range
Ride-Through Time	>= 30 ms at nominal input

Industrial Control Power Conversion Characteristics

The URSHB module integrates with GE Multilin Universal Relay chassis power architecture through the dedicated power supply slot (Slot A). It provides regulated internal DC buses for the relay processor, communication modules, digital I/O modules, and CT/VT measurement assemblies.

The module incorporates electrical transient immunity features, power-fail diagnostic monitoring, and internal self-test functions for relay system supervision. The power conversion stage maintains stable DC output under substation auxiliary AC and DC supply conditions.

The module supports GE Multilin UR platform configurations including B30, L90, T60, G60, and C60 relay families where compatible chassis hardware is installed.

Backplane Bus Communication and Firmware Compatibility

The URSHB power module interfaces with the Universal Relay backplane power distribution system rather than providing external field communication. Its operation depends on chassis-level power routing, module recognition, and firmware compatibility between installed relay components.

The modular slide-in construction allows integration with UR series rack assemblies while maintaining controlled power delivery to processor and I/O expansion cards. Installation requires verification of chassis compatibility and correct power supply slot assignment.

Frequently Asked Questions

Q: What slot position is required for the URSHB module in a GE Multilin UR chassis?
A: The URSHB is installed in Slot A, which is the dedicated power supply position of the Universal Relay chassis.

Q: What input power sources can the URSHB accept?
A: The module accepts high-voltage auxiliary AC or DC control power inputs, including 88 - 300 VDC and 88 - 265 VAC operating ranges.

Q: Does the URSHB provide field signal processing functions?
A: No. The URSHB is a power conversion module and does not perform relay protection algorithms, I/O processing, or communication functions.

Field Installation Guidelines

Install the URSHB only in the designated power supply slot of a compatible GE Multilin Universal Relay chassis. Confirm that the auxiliary power source matches the specified AC/DC input range before energizing the module.

Maintain proper cabinet grounding and ensure protective earth bonding is completed according to substation installation practices. Separate high-voltage auxiliary power wiring from low-level communication and measurement signal wiring to reduce electrical interference.

For replacement installation, remove input power before extracting or inserting the module. Verify connector alignment, chassis seating, and mechanical locking engagement before restoring power.

Specifications

• Brand: General Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems