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Solar Powered RTU

Solar Powered RTU

The Solar-Powered RTU enables a utility to monitor a remote site when it is impractical or too expensive to run electrical power to the location. Typical applications for Solar-Powered RTUs are water level measurement, water quality, and rainfall.

DFS has numerous Solar-Powered RTU installations in South Florida where stormwater drainage and canal level control are critical issues. The Solar-Powered RTUs are placed in strategic locations where power is not available, but knowing the upstream or downstream water level is key to gate control operations. Rainfall activity and water quality instruments are also monitored at Solar-Powered RTU locations.

The Solar-Powered RTUs utilize radio communications with the central site and will co-exist with AC-powered RTUs on the same RF link.

A high efficiency multi-crystal photovoltaic module manufactured by Kyocera is utilized. Its cells are encapsulated between a tempered glass cover and a pottant with back sheet to provide efficient protection from the severest environmental conditions. The entire laminate is installed in an anodized aluminum frame to provide structural strength and ease of installation.

The unit is also equipped with a Solar Power Module (SPM) and 18 Ah battery to provide power to a Telemetry Interface Module (TIM), Analog Monitor Module (AMM), and/or Digital Monitor Module (DMM). This design provides power to the solar-powered RTU for up to 3 days without sunlight.