Xa kuthelekiswa nabanye abaphuli beesekethe, umgaqo wokusebenza we-vacuum circuit breaker wahlukile kulowo we-arc extinguishing medium.Akukho sixhobo sokuqhuba kwi-vacuum, esenza ukuba i-arc icime ngokukhawuleza.Ngoko ke, isithuba phakathi koqhagamshelwano oluguquguqukayo kunye noluzinzileyo lwe-breaker circuit luncinci kakhulu.
Iimpawu ze-insulation ze-vacuum
Ivacuum ineempawu eziqinileyo zokugquma.Kwi-vacuum circuit breakers, igesi incinci kakhulu, ukuhamba kwamahhala kwee-molecule zegesi kukhulu kakhulu, kwaye amathuba okungqubana okulinganayo kuncinci kakhulu.Ke ngoko, ukuqhawuka kongquzulwano akusona sizathu siphambili sokuqhekeka kwe-gap yendawo, kodwa amasuntswana esinyithi agqitywe yi-electrode phantsi kwesenzo sentsimi yombane ephezulu yeyona nto ibangela ukonakala kwe-insulation.
Amandla e-insulation kwi-vacuum gap ayihambelani kuphela nobukhulu be-gap kunye nokufana kwentsimi yombane, kodwa iphinde ichaphazeleke kakhulu kwiipropati zezinto ze-electrode kunye neemeko zomhlaba.Ngaphantsi kwemeko yomgama omncinci womgama (2-3 mm), i-gap ye-vacuum ineempawu eziphezulu zokugquma kunomoya ophezulu woxinzelelo kunye negesi ye-SF6, isizathu sokuba umgama wokuvula umgama we-vacuum circuit breaker uncinci.
Impembelelo yezinto ze-electrode kwi-voltage ye-breakdown ibonakaliswe ngokukodwa kumandla omatshini (amandla okuqina) wezinto eziphathekayo kunye nendawo yokunyibilika kwezinto zetsimbi.Okukhona uphezulu amandla okuqina kunye nenqanaba lokunyibilika, kokukhona amandla okufakelwa kwe-electrode ephantsi kwevacuum.
umgaqo wokusebenza
Xa i-vacuum ephezulu yomoya igeleza kwindawo ye-zero, i-plasma isasazeka ngokukhawuleza kwaye icime i-arc ukugqiba injongo yokuqhawula okwangoku.
Ixesha lokuposa: Aug-04-2022