Wago DIN-Rail DC Current Sensors

WAGO Corp.’s new Feedthrough Current Sensors continuously measure DC currents to optimize photovoltaic (PV) energy production. Via serial connection, the 789-620 (0–80A DC) and 789-621 (0–140A DC) sensors transmit data with an accuracy of 0.5 percent (full scale value). This can be used to quickly identify defective or damaged PV modules, bolstering performance and reliability.

Equipped with dual RJ-45 interfaces, the sensors transmit data via RS-485 serial communication lines up to 4,000 feet. Thirty-two Current Sensors can reside on one line for connection to the WAGO-I/O-SYSTEM or PC as a MODBUS Slave. The 789 Series feedthrough configuration eliminates the need to terminate conductors, simplifying commissioning. Both models are addressable via on-unit DIP switch and feature an operational status LED. Engineered for harsh environments, the sensors operate in temperatures of -20°C to +70°C.

Shine On

The 789 Series Sensors join Wago’s solar portfolio, which includes solar tracking for PV and concentrated solar applications via WAGO-I/O-SYSTEM. 828 Series lever-operated, feedthrough terminal blocks serve solar inverters.

Wago solar applications include 758 Series IPCs managing solar energy for Tûranor PlanetSolar. The catamaran is attempting to be the first solar-powered global circumnavigation via vessel: http://www.planetsolar.org/