GE UR9EH – CPU Module for GE Multilin UR Series Universal Relays

Technical Specifications

• Manufacturer: GE Multilin (General Electric)
• Model: UR9EH (also written as UR-9EH)
• Series: UR Series Universal Relays
• Processor: 32-bit high-speed industrial processor
• Memory: 1 MB (for logic execution and data storage)
• Communication Ports: Ethernet, Serial (RS-485), USB
• Dimensions (L×W×H): 6.5” × 6” × 2.5” (approx. 165 mm × 152 mm × 64 mm)
• Weight: 1 lb 10 oz (approx. 0.74 kg)
• Operating Temperature: -40°C to +70°C (-40°F to 158°F)
• Certifications: CE, UL, CSA (industrial safety and EMC compliance)
• Warranty: 3 years

Key Features

1. Core Processing & Logic Execution
   • Serves as the brain of UR-series relays, executing protection logic, logic gates, latches, and timers for precise control.
   • High-speed 32-bit processor ensures real-time data processing and rapid fault response.
2. Seamless Compatibility & Upgradability
   • Designed for direct replacement or upgrade of UR-series relay CPUs, simplifying maintenance and system modernization.
   • Compatibility Note: Must pair new UR9EH modules with new CT/VT modules and old modules with old CT/VT modules to avoid hardware mismatch errors.
3. Multi-Protocol Communication
   • Equipped with Ethernet, RS-485 serial, and USB ports for flexible data exchange with SCADA systems, HMIs, and other industrial devices.
   • Supports IEC 61850, Modbus RTU, and other industrial communication protocols.
4. Robust Industrial Design
   • Ruggedized hardware withstands extreme temperatures (-40°C to +70°C) and harsh industrial environments.
   • Compact form factor enables easy integration into standard relay enclosures and control panels.
5. Configurable & User-Friendly
   • Fully configurable via the relay’s faceplate keypad or EnerVista UR software for customized protection and control settings.
   • Plug-and-play functionality reduces setup time and simplifies system integration.

Application Scenarios

• Power Generation
  • Gas/Steam/Hydro Turbine Protection: Provides critical CPU processing for relay-based protection of turbines in power plants.
  • Generator Protection: Executes logic for overcurrent, undervoltage, frequency, and differential protection of generators.
• Power Transmission & Distribution
  • Feeder & Line Protection: Enables high-speed fault detection and isolation for transmission lines and distribution feeders.
  • Transformer Protection: Supports differential, overcurrent, and earth fault protection for power transformers.
• Industrial Automation
  • Motor Protection & Control: Used in industrial facilities for protecting large motors from overload, short-circuit, and earth faults.
  • Process Control Systems: Integrates with PLCs and SCADA systems for coordinated control of industrial processes.
• Renewable Energy
  • Wind/Solar Farm Protection: Provides reliable relay CPU functionality for grid connection and protection of renewable energy installations.