Global Architecture Relaying Device (GARD)

RFL's GARD platform is highly versatile and is designed to perform a multitude of protective relay and communications applications. The GARD platform supports both legacy and modern communications technology and can be adapted to the most-basic and the most-complex protection systems. Explore our product offerings below.

GARD Pro Digital Teleprotection

The GARD Pro Digital Teleprotection system is a versatile product with extensive digital Time Division Multiplexed (TDM) communications capabilities for use in a wide range of power system protection applications.


GARD Pro® PLC Terminal

The GARD Pro® Single Function PLC channel is a product that can be programmed as Frequency-Shift Keyed (FSK) power line carrier system or as an amplitude-modulated ON/OFF powerline carrier terminal.


GARD Pro® 61850 Gateway

The GARD Pro® IEC 61850 Gateway is an option to the GARD Pro® protection communications platform for supporting IEC 61850 Edition 2 applications. Utilities can now utilize legacy communications channels, for protection applications, between digital IEC 61850 stations. As a result, there is no need to establish secure Ethernet channels between stations as existing digital networks or Powerline Carrier may be used. Other new features include; separate station bus and process bus ports, Parallel Redundancy Protocol (PRP) for redundant GOOSE communications, Manufacturing Message Specification (MMS) for system control and status management, Precision Time Protocol (PTP) for clock synchronization and IEC 61850 Edition 2 test and simulation modes.


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Utility industry and electric utility white papers by RFL providing communications and protection solutions to today's challenges, such as migrating data from leased lines.

Helping Utilities Move Forward in IP Migration

Multipoint-to-Multipoint Protective Relaying Signaling Using Digital Communications and Built-In Logic

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