Isiphazamisi seVacuum yokuthumela ngaphandle TD-17.5/630-21 (188)

Ii-Subassemblies zeziphazamisi ze-vacuum zaqala zadityaniswa kwaye zadityaniswa kunye kwiziko le-hydrogen-atmosphere.Ityhubhu eqhagamshelwe ngaphakathi kwesiphazamisi yayisetyenziselwa ukukhupha isiphazamisi ngempompo yokufunxa yangaphandle ngelixa isiphazamisi sigcinwe malunga ne-400 °C (752 °F).Ukusukela ngeminyaka yee-1970, iinxalenye ze-interrupter subcomponents ziye zadityaniswa kwi-high-vacuum brazing furnace ngenkqubo edityanisiweyo yokuqhafaza kunye nokukhutshwa.Amashumi (okanye amakhulu) eebhotile acutshungulwa kwibhetshi enye, kusetyenziswa isithando somlilo esiphezulu esibafudumeza kumaqondo obushushu ukuya kuthi ga kwi-900 °C kunye noxinzelelo lwe-10−6 mbar.Ke, iziphazamisi zizalisekisa imfuneko yomgangatho "utywinwe ubomi bonke".Ngombulelo kwinkqubo yokuvelisa ngokuzenzekelayo, umgangatho ophezulu unokuphinda wenziwe kwakhona nangaliphi na ixesha.
Emva koko, ukuvavanywa kweziphazamisi ngokusebenzisa inkqubo ye-X-ray isetyenziselwa ukuqinisekiswa kwezikhundla kunye nokugqitywa kwamacandelo angaphakathi, kunye nomgangatho weendawo zokuqhafaza.Iqinisekisa umgangatho ophezulu we-vacuum interrupters.
Ngexesha lokwenziwa, amandla aqinisekileyo e-dielectric yangaphakathi yesiphazamisi se-vacuum asekwa ngokunyuka kwamandla ombane, kwaye oku kungqinwa luvavanyo lombane lwe-impulse voltage.Yomibini imisebenzi yenziwa ngamaxabiso aphezulu kunalawo achazwe kwimigangatho, njengobungqina bomgangatho we-vacuum interrupters.Le yimfuneko yokunyamezela ixesha elide kunye nokufumaneka okuphezulu.
Ngaphantsi kweemeko ezithile, i-vacuum circuit breaker inokunyanzela i-current in circuit ukuya kwi-zero phambi kwe-zero yendalo (kunye nokuguqulwa kwangoku) kwisiphaluka esitshintshisayo.Ukuba ixesha lokusebenza kwesiphazamisi alilunganga ngokubhekiselele kwi-AC-voltage waveform (xa i-arc icinyiwe kodwa abafowunelwa basahamba kwaye i-ionization ayikachithwa kwi-interrupter), i-voltage inokugqithisa i-gap's withstand voltage.
Kule mihla, ngokunqunyulwa okuphantsi kakhulu kwangoku, i-vacuum zesekethe zokuqhawula aziyi kubangela i-overvoltage enokunciphisa ukugquma kwizixhobo ezijikelezileyo.