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Medium Voltage Static Transfer Switch
Static transfer switches use solid-state devices to perform transfers. These solid-state devices replace the mechanical operators in the conventional transfer switches. There are two approaches for transfer switches operation; open transition or closed transition. “An open transition is a break-before-make operation where the current to the load is interrupted for a brief period of time. This has the advantage of never paralleling the two sources. A closed transition is a make-before-break operation where the current to the load is not interrupted during the transfer. This has the advantage constantly supplying the load” .
STS find applications in the areas of automated manufacturing and assembly lines, telecommunication centers, power quality and industrial parks and internet data centers.
 A Comparison of Medium Voltage Static Transfer Switches and Medium Voltage Mechanical Transfer Switches, By: William P. Risko P.E., Sr. Applications Engineer Silicon Power Corporation, Electric Energy Publications Inc. URL: http://www.electricenergyonline.com/?page=show_article&mag=6&article=43
Key Technology Area:
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