This page is a practical guide for designing feeder automation terminals (FTU, DTU and TTU) with the right mix of sensing, communication, power, security and IC choices. It helps map real grid scenarios into a robust architecture, a realistic checklist and brand-ready component selections. It comes with various models, suitable for ring main units, switch stations, and other applications with 8 and 16 bays, respectively. The functional advantages of dtu. Distribution Automation Terminals (DTU and FTU) by Application (Substation, Pole Mounted Switch, Distribution Transformer, Others), by Types (Distribution Terminal Unit (DTU), Feeder Terminal Unit (FTU)), by North America (United States, Canada, Mexico), by South America (Brazil, Argentina, Rest of. The communication management machine is a very important link in the automation system of an integrated substation. It is located at the communication layer of the system, undertaking communication tasks with the control layer and the higher-level dispatching layer at the upper level, and. The DTU series distribution automation terminal device is a protection and monitoring terminal product developed for multi line collection sites such as ring main units and small switch stations in distribution networks. Overview of DTU Distribution Network Automation Terminal Device: The DTU.