Product Overview

The GE Multilin UR 7BH is a high-speed communication and processing module specifically developed for the Universal Relay (UR) family. This module acts as the digital backbone of the protective relay system, managing complex data traffic between the local protection logic and higher-level supervisory networks. Designed to meet the stringent requirements of power utility and industrial substation automation, the UR 7BH ensures that critical status information and control commands are transmitted with ultra-low latency.

Unlike basic I/O cards, the UR 7BH is engineered to handle advanced substation protocols, facilitating a unified communication architecture. It allows the protective relay to interface seamlessly with SCADA, Human Machine Interfaces (HMI), and Distributed Control Systems (DCS), making it a vital component for smart grid integration and modern power management.

Technical Specifications

• Manufacturer: General Electric (GE Multilin)

• Model Number: UR 7BH

• Series: Universal Relay (UR) Series

• Module Type: Communication / CPU Processor Module

• Ethernet Support: Dual-Redundant 10/100Base-T or Fiber Optic options

• Protocols: IEC 61850, DNP 3.0, Modbus TCP/IP, Modbus RTU

• Operating Temperature: -40°C to +85°C (Industrial Grade)

• Relative Humidity: 5% to 95% (Non-condensing)

• Weight: 0.66 kg

• Dimensions: 16.3 cm x 4.2 cm x 21 cm

• System Type: Protection & Control (PLC/DCS Interface)

Key Technical Characteristics

• Redundant Network Architecture: Equipped with dual-redundant Ethernet ports, the UR 7BH supports "bumpless" redundancy. This ensures that in the event of a cable failure or switch malfunction, the protection system maintains uninterrupted communication with the control room.

• Multi-Protocol Versatility: The module features native support for a wide array of industrial standards, including IEC 61850 for substation automation and DNP 3.0 for remote telemetry, eliminating the need for external protocol converters.

• Enhanced Processing Power: Optimized for the UR series chassis, the processor manages high-speed peer-to-peer GOOSE (Generic Object Oriented Substation Event) messaging, which is essential for interlocking and high-speed tripping schemes across the substation.

• Robust Environmental Hardening: Built to withstand the electrical interference and temperature fluctuations typical of high-voltage environments, the module is tested for high EMI immunity and extreme thermal cycling.

• Scalable Integration: The UR 7BH provides the flexibility to be integrated into existing legacy systems via serial ports or modernizing infrastructures through high-speed Ethernet backbones.

Industrial Applications

The GE UR 7BH is an essential component for high-reliability power systems, including:

• Substation Automation Systems (SAS)

• Utility-scale Power Generation Protection

• Smart Grid Communication Gateways

• Large Industrial Microgrids and Power Distribution Centers

• Transmission and Distribution Control