These Outdoor VCB are of live tank design. The vacuum interrupters are housed in hollow porcelain insulators filled with SF6/Nitrogen gas at 0.5 bar above atmospheric pressure to safeguard against condensation. A spring operated mechanism is housed in a weather-proof cabinet and a sturdy extruded steel angle structure is used for mounting the breaker. Simple and reliable spring mechanism minimizes operating energy and ensures longer mechanical life.
Nowadays, Outdoor vacuum circuit breakers applications to not only medium voltage power systems but also in high voltage substations or transmission systems.
It is because of Outdoor VCB’s extremely advantageous characteristics such as high interruption capability, long operation life, safety and high cost-performance.
Based on the applications of these supreme characteristics, many promising new products are being continuously developed, so far and from now on.
In the recent years, vacuum circuit breakers got developed a lot and are used in various fields which are discussed in this section.
