GE UR9EH CPU Processor Module

Technical Specifications

Model: UR9EH

Brand: GE Multilin (GE Vernova)

Product Type: Main CPU processor module for UR‑series universal relay

Applicable System: GE Multilin UR chassis platform, compatible with T60, G60, B90, C60, F60, L90 protection relays

Processor: High‑speed industrial 32‑bit RISC processor, microsecond‑level protection logic response

On‑board Memory: Large‑capacity event log, fault disturbance recording storage space

Communication Interface: Front‑panel Ethernet port, back‑plane bus; supports Modbus RTU, DNP3.0, IEC 61850 MMS protocol

Configuration Tool: Matched with GE EnerVista UR configuration & debugging software

Back‑plane Interface: UR‑chassis high‑speed back‑plane connector, plug‑in slot installation

Supported Logic: FlexLogic programmable protection logic, multi‑setting‑group storage

Matching Requirement: CPU firmware version shall match CT/VT acquisition module version, avoid hardware mismatch fault

Installation Mode: Plug‑in slot installation inside UR relay chassis

Operating Temperature:‑40℃ ~ +85℃, non‑condensing

Humidity:5%‑95% non‑condensing

Weight:1.03kg

Dimension:145mm ×126mm ×65mm

Application: Power‑plant transformer & generator protection, substation feeder‑busbar protection, industrial high‑voltage power‑system UR‑relay core computing unit.

Product Function Description

UR9EH is the high‑performance main CPU processor module of GE Multilin UR series universal relay platform, which is the core brain of UR‑series protection relays。

This module completes high‑speed calculation of protection algorithms, protection logic judgment, fault‑event processing, disturbance‑recording and communication management. It receives sampling data from CT/VT acquisition modules such as UR8FH through chassis back‑plane bus, executes differential protection, overcurrent protection, impedance protection and other protection algorithms, outputs trip and alarm judgment results, and completes real‑time measurement data calculation。

It has powerful data recording capacity, which can store multi‑group event logs, fault waveforms and operation trend data, convenient for post‑fault analysis. It carries Ethernet communication interface, supports multiple mainstream power‑industry communication protocols, and realizes data interaction with upper‑level DCS/SCADA system. FlexLogic flexible logic function can realize customized interlock and control logic according to on‑site requirements.

The module adopts plug‑in structure, convenient for on‑site replacement and maintenance. It should pay attention to firmware‑version matching with CT/VT acquisition module when replacing, otherwise hardware‑mismatch or DSP‑error alarm will occur.

Product Details

Standard plug‑in CPU module for UR‑series chassis, metal shielding housing, industrial‑grade anti‑interference hardware design, adapts to complex electromagnetic‑interference environment of power‑plant and substation sites. This legacy CPU module has been discontinued by original manufacturer, mainly used for old‑equipment overhaul and spare‑part replacement. Please confirm chassis slot position, firmware compatibility and matching acquisition‑module version before commissioning. Strict ESD protection shall be adopted during installation.