T&D World Magazine

Digital Transducer Provides Real-Time View of Entire Distribution System

Schweitzer Engineering Laboratories, Inc. has released the SEL-734T Advanced Digital Transducer. Optimized for smart distribution monitoring and automation, the SEL-734T monitors feeders, transformers, and distributed generation assets.

The SEL-734T’s monitoring, recording, and reporting capabilities enable control of power system assets for improved power quality and reliability, while instantaneous disturbance reporting features decrease response times of operations departments and prevent future disturbances. With the SEL-734T, system operators can now assess the state of the entire distribution system in real time, isolate disturbances, and switch on power condition equipment, such as capacitor banks, by issuing remote commands to the SEL-734T.

The SEL-734T provides seamless communications integration with an optional Ethernet port and DNP3 communications protocol. Combined with standard SELogic programming and optional I/O, the SEL-734T can monitor and control distributed assets such as capacitor banks and transfer switches. Adding an SEL-2401 Satellite-Synchronized Clock enables synchrophasor measurement, which gives system operators an instantaneous picture of the power system and correlates system-wide events.

The SEL-734T’s optional lightweight enclosure houses accessories that include a network radio, power supply, and battery. Fully sealed, the enclosure complies with NEMA 1, 2, 3, 4, 4X, 12, and 13; IEC 529; and IP66 protection requirements. Standard connectors enable a true plug-and-play system necessary for distribution automation and smart grid projects.

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