Isiphazamisi sevacuum kwikhabhathi enokuvutheka (132A)

Kwi-1926, iqela elikhokelwa yiRoyal Sorensen kwi-California Institute of Technology liphanda ukutshintshwa kwe-vacuum kunye nokuvavanya izixhobo ezininzi;Imiba engundoqo yophazamiseko lwe-arc kwindawo engenanto iphandwe.USorenson ubonise iziphumo kwintlanganiso ye-AIEE ngaloo nyaka, kwaye waxela kwangaphambili ukusetyenziswa korhwebo.Ngomnyaka we-1927, uGeneral Electric wathenga amalungelo obunikazi kwaye waqala uphuhliso lwezorhwebo.I-Great Depression kunye nophuhliso lwe-oyile-ezaliswe yi-switchgear yabangela ukuba inkampani inciphise umsebenzi wophuhliso, kwaye umsebenzi omncinci obalulekileyo wezorhwebo wenziwa kwi-vacuum power switchgear de kwaba ngo-1950.
Ngo-1956, u-H. Cross waguqula i-high-frequency-circuit vacuum switch kwaye wavelisa i-vacuum switch enezinga le-15 kV kwi-200 A. Kwiminyaka emihlanu kamva, u-Thomas H. Lee kwi-General Electric wavelisa i-vacuum breakers yokuqala kunye ne-rated amandla ombane we-15 kV kwimisinga yokuqhawula i-short-circuit ye-12.5 kA.Ngo-1966, izixhobo zaphuhliswa nge-voltage elinganisiweyo ye-15 kV kunye ne-short-circuit breaking currents ye-25 kunye ne-31.5 kA.Emva kweminyaka yoo-1970, izitshixo zevacuum zaqala ukutshintsha iiswitshi ze-oyile encinci kwisixhobo sokutshintsha i-voltage ephakathi.ekuqaleni kweminyaka yoo-1980, iiswitshi ze-SF6 kunye nezaphuli-mthetho ziye zatshintshwa ngokuthe ngcembe bubuchwephesha be-vacuum kwi-medium-voltage application.
Ukususela ngo-2018, i-vacuum circuit breaker ifikelele kwi-145 kV kwaye i-breaking current ifike kwi-200 kA.

Iminyaka engama-30 ubudala ye-Siemens isiphazamisi sevacuum
Abafowunelwa baphethe i-current current xa ivaliwe, benza i-terminals ye-arc xa ivuliwe.Zenziwe ngezinto ezahlukeneyo, kuxhomekeke kusetyenziso lwesiphazamisi sevacuum kunye noyilo lobomi obude bokunxibelelana, ukubuyiswa ngokukhawuleza kombane wokumelana nokulinganisa, kunye nolawulo lombane ogqithisileyo ngenxa yokunqunyulwa kwangoku.
Indlela yokusebenza yangaphandle iqhuba umnxibelelwano ohambayo, ovula kwaye uvale isiphaluka esixhunyiwe.Isiphazamisi sevacuum sibandakanya umkhono wesikhokelo ukulawula unxibelelwano oluhambayo kunye nokukhusela imivumbo yokutywina ekujikeni, okuya kuthi bufutshane kakhulu ubomi bayo.