Description

GE Multilin UR9KH UR-9KH Universal Relay CPU Module

Configured for relay processing and communication execution in the GE Multilin Universal Relay (UR) Series platform, the GE Multilin UR9KH (UR-9KH CPU Module) provides direct physical and electrical execution for protection logic processing, serial communication, and fiber-optic network interface functions. The module operates as a CPU assembly within modular UR protection and control devices.

Hardware Specifications

Parameter	Specification
Model	UR9KH / UR-9KH
Brand	GE Multilin
Origin	USA / Ontario, Canada
Weight	1 lb
Dimensions	6.5 in L x 6 in W x 2.5 in H
Operating Temp	-40 deg C to +60 deg C
Power Consumption	Determined by UR relay chassis power supply configuration
Product Family	Universal Relay (UR) Series
Module Type	CPU Module
Communication Interface	RS-485 and 100Base-FX multi-mode fiber interface
Network Configuration	Redundant fiber communication support
Installation Method	Plug-in modular UR chassis slot
Cooling Method	Chassis natural convection cooling

GE Multilin UR CPU Communication and Processing Architecture

The UR9KH CPU module provides the central processing interface for GE Multilin Universal Relay systems. It manages relay application execution, communication exchange, and coordination with installed CT/VT, digital I/O, and communication modules within the UR chassis.

The module supports industrial protection system communication requirements including deterministic network communication paths, backplane bus communication velocity compatibility, and firmware flash compatibility within supported UR platform hardware revisions. The CPU architecture allows integration of serial and fiber communication channels for substation protection and control applications.

Frequently Asked Questions

Q: What function does the UR9KH CPU module perform inside a UR relay system?
A: The UR9KH provides processor functions for relay logic execution, communication handling, and coordination of installed UR hardware modules.

Q: Does the UR9KH operate as a standalone protection relay?
A: No. The module requires installation in a compatible GE Multilin Universal Relay chassis with supporting power supply and application modules.

Q: What communication interfaces are available on the UR9KH?
A: The module configuration includes RS-485 serial communication and multi-mode fiber 100Base-FX communication interfaces.

Field Installation Guidelines

• Install the UR9KH only in the designated CPU slot of a compatible GE Multilin Universal Relay chassis.
• Confirm chassis power removal before module insertion or removal.
• Verify connector alignment before applying insertion force to avoid damage to module guides and backplane contacts.
• Maintain separation between fiber-optic communication cables, serial wiring, and high-voltage signal conductors.
• Connect communication cable shields and grounding points according to the relay panel EMC design.
• Confirm firmware compatibility between the CPU module and installed UR relay hardware before commissioning.

Specifications

• Brand: General Electric

Advantages

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