Over the last decade, the SMPTM Gateway has been recognised as one of the most efficient and reliable substation gateways on the market.

Eaton’s SMP SG-42xx platform leverages more than 20 years of hardware and software development, and delivers one of the most advanced substation automation solutions on the market. Flexible, reliable, evolutive, the SMP SG-4250 and SMP SG-4260 models are smart grid enablers.

The SMP Gateway is used successfully in thousands of substations to perform data acquisition and distribution, protocol translation and to provide secure remote access to substation intelligent electronic devices (IEDs).

As the successor to the SMP 4/DP, the SMP DA-3050 addresses a key limitation by integrating built-in I/Os, eliminating the need for external modules in many applications. This enhancement makes it an even more versatile and compact solution for both substation and field automation. Whether installed inside protective relay enclosures or directly in the switchyard, this SMP Gateway delivers essential communication, data concentration, and protocol conversion capabilities. Built to withstand extreme environmental conditions, the SMP DA-3050 ensures reliable operation across a wide temperature range, meeting the demands of modern utilities.

Specially designed to meet the requirements of distributed I/O in modern utility substation automation systems, Eaton’s substation-grade SMP distributed I/O platforms integrate with the SMP Gateway or can be used as standalone I/O modules that connect directly to a DNP3 master station. Supporting binary input and output cards, as well as analog input cards, both devices operate with AC or DC voltage and communicate using the DNP3 protocol over serial RS-485 or TCP/IP using fiber or copper Ethernet. Error-detection features ensure data integrity between the data point and the control center, with supported IRIG-B synchronisation for precise timestamping. In addition, all wiring resides on the rear panel through removable terminal blocks, with a front panel that displays the status of the device and the state of all I/O signal.