UR9HH GE Multilin UR-9HH CPU Module

Description

The UR-9HH central processing unit (CPU) module serves as the primary computational and control engine for the General Electric Universal Relay (UR) series protection and management devices. This specialized hardware component executes complex logic frameworks, protective algorithms, and manages system latches and gates that govern unit protection across electrical substations and industrial power networks. The UR-9HH coordinates inter-module data synchronization, processes information collected by adjacent input/output modules, and acts as the central communication hub. It manages the integrated RS485 serial port on the rear backplane alongside dual Ethernet ports, which include a front-access port and a dedicated rear copper 10/100Base-TX Ethernet port designed for maintenance, configuration, and commissioning diagnostics. Configured in a horizontal mechanical footprint indicated by the "H" designation, this module interfaces directly with the EnerVista UR software platform for comprehensive device configuration and system monitoring.

Features

• Governs unit protection logic via dedicated algorithms, frameworks, and system gates.
• Provides central orchestration and data aggregation for all secondary modules within the relay chassis.
• Equipped with an RS485 serial communication port located at the rear of the device.
• Features dual Ethernet ports, including a front-facing port and a rear copper 10/100Base-TX Ethernet port.
• Facilitates direct system configuration, maintenance, and commissioning via EnerVista UR software.
• Constructed in a horizontal form factor designed for standard horizontal relay chassis layouts.

Applications

• Central processing and communication management in GE Universal Relay protective units.
• Substation automation, protective relay logic execution, and serial/Ethernet communications.
• Configuration deployment, field maintenance, and diagnostic commissioning via copper Ethernet interfaces.

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Chassis Orientation Verification: Confirm that the host relay unit utilizes a horizontal enclosure layout matching the horizontal ("H") mechanical configuration of this module prior to insertion.
• Power Isolation: De-energize the entire Universal Relay enclosure before removing or installing the CPU module to prevent permanent electronic damage to the backplane logic bus.
• Communication Cable Routing: Separate network copper 10/100Base-TX Ethernet and RS485 serial cables from high-voltage primary wiring to prevent electromagnetic interference from disrupting signal transmission.
• Firmware and Software Setup: Ensure that the EnerVista UR software configuration tools are updated to match the specific firmware revisions running on the replacement processing unit.