So it has far superior arc quenching properties than any other medium oil in oil cb, sf6 in sf6 circuit breaker. The vacuum circuit breaker is today recognized as most reliable current interruption technology for medium voltage switchgear. Abb library is a web tool for searching for documents related to abb products and services. Current interruption in vacuum the vacuum circuitbreaker does not require an interrupting and insulating medium. Vacuum circuit breaker, vcb is installed in the medium voltage distribution lines to protect life and load equipment. It requires minimum maintenance compared to other circuit breaker technologies. The vacuum interrupter technology was first introduced in the year of 1960. These characteristics allow opening and closing operations. The vd4 circuitbreakers use a mechanical operating mechanism, with stored energy and free trip. Optimization design of communication circuit parameters in dc vcb. Vd4 medium voltage vacuum circuitbreaker 12 kv 12504000 a. The main characteristics of vacuum circuit breaker are, it interrupts the arc in a vacuum bottle. Customers are required to provide relevant switchgear information for customization. Vacuum circuit breaker or vcb and vacuum interrupter.
Lsis promec vcb is userfriendly to give more convenience and safety by providing high speed interrupting. As time goes on, the size of the vacuum interrupter has reduced from its early 1960s size due to different technical developments in this field of engineering. Secovac vacuum circuit breakers are withdrawable type circuit breakers rated for a voltage of 12kv and a maximum current of up to 4000a for application in indoor. Vacuum circuit breakers abb 11 kv vcb panel distributor.
Ls promec vcb is userfriendly to give more convenience and safety by providing high speed interrupting time 3cycles, adopting the rapid auto reclosing. Medium voltage products vd4 medium voltage vacuum circuit. Pdf the results of switching tests of a dc vacuum circuitbreaker designed for rated. Vacuum circuit breakers are almost maintenance free. This technical manual describes transport, assembly, operation and maintenance of the series hvx vacuum circuitbreakers. The vcb is draw out type and can be racked out directly on the floor. View and download abb vd4 instruction manual online. Center are well coordinated to suit the duties that a circuit breaker must perform.
Medium voltage switching devices vacuum circuitbreaker hvx. Vcbs are type tested according to international standards iec. Some important characteristics of vacuum circuit breaker are below, the vcb vacuum circuit breaker current rating is up to 3000 amperes. Vacuum circuit breaker construction, working and its applicatons. Lsis promec vcb is user friendly to give more convenience and safety by providing high speed interrupting. For example, when contacts of a breaker are opened in the vacuum. In vacuum circuit breakers, the vacuum is used as the arc quenching medium. The vacuum circuit breaker dose not require any other media for arc extinction.
The realization of a rapid dc vacuum circuit breaker vcb depends on the. Our range starts from ht 11 kv and upto ht 2 kv vacuum circuit breakers and sf6 breakers. Vcpw vacuum circuit breaker controls and indicators are functionally grouped on the front control panel, including. Vacuum circuit breaker vcb principle, construction and. Vcpwc mv vacuum circuit breakers are designed for high capacity vcb used in 36 inches switchgears, including epoxy insulation and polyolefin insulated. Vacuum circuit breakers powerline electric india pvt ltd and its subsidiary company ms powertech india situated in delhi and ghaziabad,up have been involved in the trade and manufacturing of switchgear panels and vacuum circuit breaker since 1990.
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