Power Electronics

Power Distribution Systems

Thomas & Betts (T&B) is collaborating with Schweitzer Engineering Laboratories (SEL) to provide a new capacitor switch control that improves the efficiency of power distribution systems. The new capacitor bank control combines Joslyn Hi-Voltage® capacitor switches with SEL advanced monitoring control systems.

Among the new capacitor bank controls being offered by this collaboration is the SEL-734B Three-Phase Monitor and Capacitor Bank Control, which is used for the automation and monitoring of three-phase banks, combined with T&B's selection of VerSaVac (VSV) one- and three-phase vacuum switches for pole-top capacitors, and VBM distribution vacuum switches. Capacitor bank upgrade kits are also available for applying the capacitor bank control system to existing fixed-capacitor banks.

The new capacitor bank control system includes a full set of power quality monitoring, control and reporting functions, and can be combined with metering accuracy measurements. Its plug-and-play pole mount enclosure provides weather-protected space to mount network radios, power supplies and encrypting transceivers. The capacitor bank control system also includes SEL standard software tools, a 10-year product warranty on SEL products and technical support.

Thomas & Betts
Part Number: SEL-734B

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