Synchronizing switching times of vacuum interrupters for medium voltage switchboards' techniques

Abstract

The vacuum interrupter is generally accepted as reliable circuit breaker in the medium voltage power system , but the operating thoroughly a high inductive loads and capacitive loads caused a significant damages with severe erosion in the surfaces both of cathode and anode vacuum Interrupter . This paper remedies both of arcing currents, chopping currents and prevents a high transient voltages (TRV) due to process of switching interrupters . We are still using the conventional theory for designing of medium voltage switching system but by using a semiconductor materials such as Thyristors circuit as a compact construction for adaptive to be an ideal switching device for medium voltage offers the facilities for shifting the full arcing currents and current chopping between two electroplates this paper presents on the existing of copper-chrome interrupters Cu-Cr30. Thus for enhanced durability of dielectric properties.