ST3 Series 50-2500A-39509

Product Code: ST3/50-250

Static transfer switch is a semiconductor system that can automatically or manually switch between two single-phase or three-phase AC sources synchronous with each other, without any interruption to the load. Power transfer in the device is done by means of thyristors.

Working theory: The primary function of the static transfer switch is to ensure that the load is fed uninterruptedly through the other source that does not have a problem, when there is a problem in any of the sources feeding it. One of the input sources of the static transfer switch is called the "preferred source" and the other is called the "alternate source". Feeding the load from the preferred source has priority. In other words, when both sources are within the limits, the load will be fed from the preferred source. If any problem is detected in the preferred source, the load will be transferred to the alternative source in less than 1/4 period. Which of the sources will be the preferred source, which will be the alternative source and voltage limits can be adjusted.

Usage Areas: Static transfer switches are also used as a single system in almost every area where uninterrupted energy is very critical. Hospitals, medical centers, military systems, data processing centers, airports can be listed among these places.