circuit breaker vakwu

circuit breaker vakwu

"Vacuum circuit breaker" is named because both the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no need for maintenance for arc extinguishing. The application in the power grid is more popular. The vacuum circuit breaker is an indoor power distribution device in a 3-10kV, 50Hz three-phase AC system. It can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants and substations. In the places of maintenance and frequent operation, the circuit breaker can be configured in the middle cabinet, double-layer cabinet and fixed cabinet to control and protect high-voltage electrical equipment.

prinċipju tax-xogħol

Meta s-circuit breaker tal-vakwu jkun fil-pożizzjoni magħluqa, l-insulazzjoni tal-art tagħha tinġarr mill-iżolatur ta 'appoġġ. Ladarba sseħħ ħsara permanenti fuq l-art fil-linja konnessa mal-vacuum circuit breaker, wara li l-circuit breaker jersaq, il-punt tal-ħsara fl-art ma jiġix eliminat, u hemm busbar elettriku. L-insulazzjoni tal-art għandha tinġarr ukoll mill-vojt tal-vakwu tal-ksur tal-breaker; meta diversi difetti jiġu interrotti, id-distakk tal-insulazzjoni tal-vakwu bejn par ta 'kuntatti tal-ksur għandu jiflaħ l-azzjoni ta' diversi vultaġġi ta 'rkupru mingħajr ħsara. Għalhekk, il-proprjetajiet iżolanti tad-distakk tal-vakwu saru s-suġġett ewlieni ta 'riċerka biex itejbu l-vultaġġ tal-ksur tal-kamra tat-tifi tal-ark u jagħmlu l-breaker tal-vakwu tal-fracture waħdieni jiżviluppa għal livell ta' vultaġġ għoli.