GE Multilin UR-9EV / UR9EV UR Series CPU Module

Description

The GE Multilin UR-9EV is a high-performance CPU module engineered for the UR Series (Universal Relay) platform, specifically utilized within advanced systems such as the T60 Transformer Protection System. This module serves as the primary processing and control hub, executing critical protection algorithms, managing communication interfaces, and driving the human-machine interface.

The UR-9EV configuration is equipped with dual RS485 communication ports supporting industrial protocols including Modbus RTU and DNP 3.0, ensuring seamless integration into SCADA systems and substation automation networks. It features an enhanced front panel assembly integrated with a localized Chinese language text display and user-programmable pushbuttons. This layout provides field operators with intuitive local control, real-time diagnostic visibility, and flexible operation right at the relay fascia. Built with robust, substation-hardened hardware, the module delivers dependable processing capabilities under harsh environmental conditions.

Features

• Advanced Processing Core: Acts as the central processing engine for UR Series protection and control devices.
• Dual Serial Connectivity: Integrated with dual RS485 communication ports supporting Modbus RTU and DNP protocols.
• Enhanced Local Interface: Features an advanced faceplate layout with a wide-angle hinge assembly for simple module accessibility.
• Localized HMI Display: Equipped with a native Chinese language character display for localized parameter and status monitoring.
• User-Programmable Control: Includes configurable front-panel pushbuttons to execute user-defined control logic or menu navigation.
• Substation-Hardened Design: Employs distinct blue identifying labels to prevent physical module mismatching across legacy systems.

Applications

• Substation Automation Networks: Serves as the communication and processing backbone for SCADA and telemetry links via Modbus RTU or DNP 3.0.
• Transformer Protection Control: Installed within the T60 Transformer Protection System to manage asset health and high-speed protection mechanisms.
• Localized Industrial Control Panels: Deployed in industrial facilities requiring native Chinese character displays and quick tactile pushbutton control at the device fascia.

Technical Specifications

Installation Guidelines

• Control Power Removal: Module withdrawal and insertion must only be performed when all control power has been isolated and completely removed from the relay unit.
• Electrostatic Discharge (ESD) Protection: Technicians must utilize appropriate electrostatic discharge protection (such as a properly grounded static wrist strap) when handling the module.
• Hardware Compatibility Verification: Ensure that the CPU module label color matches the associated CT/VT and DSP module label colors. Mismatched hardware variants will cause the relay to halt and display a "DSP ERROR" or "HARDWARE MISMATCH" fault code.
• Faceplate Operation: Unfasten the primary thumb screw to swing the wide-angle hinged front faceplate panel to the left, enabling clear access to the chassis card slots for module extraction or seating.