Overview

The GE UR81H is a communications module for the GE Multilin Universal Relay (UR) series. This module is designed to provide advanced networking and communication capabilities, enabling seamless integration of UR relays into modern SCADA, DCS, and automation systems.

Supporting high-speed Ethernet, serial protocols, and redundant communication channels, the UR81H ensures reliable data exchange between protection relays and supervisory systems. By expanding the communication options of UR relays, it enhances system flexibility, interoperability, and cyber-secure connectivity across utility substations, power generation plants, and industrial facilities.

Technical Data

Typical Applications

• Utility substations: Enabling UR relays to communicate with SCADA systems for centralized monitoring and control.

• Power generation plants: Providing redundant communication paths for generator and transformer protection.

• Industrial facilities: Integrating motor and feeder protection relays into plant automation networks for real-time control.

• Smart grid networks: Supporting IEC 61850-enabled communication for modern grid infrastructure and digital substations.

Key Features

• High-speed Ethernet and serial communication for flexible and efficient relay integration.

• Supports multiple protocols including IEC 61850, Modbus, DNP3, and RS-485 for wide compatibility.

• Redundant channel design ensures fault-tolerant networking for continuous operation.

• Plug-in modular architecture enables easy installation and replacement during maintenance.

• Secure communication features for cyber-secure connectivity in modern automation systems.

FAQ

Q1: What is the primary role of the UR81H module?

A1: The UR81H provides communication interfaces for GE Multilin UR relays, enabling their integration with SCADA/DCS systems for seamless data exchange.

Q2: How does it improve system reliability?

A2: By offering redundant channels and secure networking, the UR81H ensures continuous communication, even during network failures or disturbances.

Q3: Is it compatible with all UR relays?

A3: Yes, the UR81H is designed for integration across the GE Multilin Universal Relay platform, ensuring compatibility with all UR series modules.

Q4: Can it be replaced easily?

A4: Yes, its plug‑in modular design allows for quick installation and replacement without significant system downtime.

Q5: Why choose GE UR communications modules?

A5: GE UR communications modules offer proven reliability, advanced protocol support, and global compatibility for critical power system and industrial applications, ensuring continuous, secure operation in demanding environments.