GE Multilin URSHB Power Supply Module

Configured for power conversion in Universal Relay chassis platforms, the GE Multilin URSHB (URSHB Power Supply Module) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

The URSHB module operates within the GE Multilin Universal Relay (UR) hardware framework with input options tailored for target sub-station voltage rails:

• URSHB Base Model: High-reliability internal power supply module designed for direct slot integration into GE Multilin UR series protection relay chassis.
• Low-Voltage DC Option: Optimized for 8 to 48 VDC battery systems, delivering output current up to 15 A with up to 98% efficiency.
• Universal AC/DC Option: Operates across a wide 110 to 250 V AC/DC input range, featuring output current up to 5 A per channel and integrated auxiliary relay contacts.

Hardware Specifications

Backplane Bus Communication Velocity & I/O Scaling

The URSHB power supply delivers regulated DC voltage rails directly to the internal UR backplane bus, enabling stable processing velocity across secondary CPU and digital sampling cards. High-efficiency power conversion limits thermal dissipation within the closed relay chassis, preventing backplane bus degradation during full-load I/O density scaling. Integrated voltage monitoring circuits maintain execution integrity across the internal bus structure during severe input source fluctuations.

Frequently Asked Questions

Q: What are the input voltage options for the URSHB power module?

A: The module is available in a Low-Voltage DC version (8 to 48 VDC) and a Universal AC/DC version (110 to 250 V AC/DC).

Q: What is the contact rating for the auxiliary status relay on the AC/DC variant?

A: The integrated relay output contacts are rated for 5 A at 240 VAC or 10 A at 24 VDC resistive load.

Field Installation Guidelines

1. De-energize all primary input AC/DC power sources feeding the relay chassis before installing or replacing the module.
2. Insert the URSHB module firmly into its designated power supply slot in the UR relay frame until the backplane card edge connectors engage completely.
3. Fasten top and bottom front panel captive screws to 0.6 Nm torque to lock the module in position and ensure chassis frame grounding.
4. Verify input supply polarity and wire gauge compatibility prior to terminating connections on the rear terminal block.
5. Connect ring terminals securely to input power terminals to ensure minimal contact resistance under high-current DC operation.