Isiphazamisi se-vacuum sokuthekelisa i-TD-17.5/630-21 (188)

Imininingwane Yomkhiqizo

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Incazelo emfushane yomkhiqizo:

Iziphazamisi ze-vacuum zaqale zahlanganiswa futhi zaqiniswa ndawonye esithandweni se-hydrogen-atmosphere.Ishubhu elixhunywe ngaphakathi kwesiphazamisi liye lasetshenziselwa ukukhipha isiphazamisi ngepompo yokuhlanza yangaphandle kuyilapho isiphazamisi sigcinwe cishe ku-400 °C (752 °F).Kusukela ngeminyaka yawo-1970s, izingxenye ezingaphansi kweziphazamisi ziye zahlanganiswa esithandweni somlilo se-vacuum ngenqubo ehlanganisiwe yokubhokoda nokuphuma.Amashumi (noma amakhulu) amabhodlela acutshungulwa eqoqweni elilodwa, kusetshenziswa isithando somlilo se-vacuum esiphezulu esiwashisisa emazingeni okushisa afinyelela ku-900 °C kanye nokucindezela kuka-10−6 mbar.Ngakho-ke, iziphazamisi zifeza imfuneko yekhwalithi "evalwe impilo yonke".Ngenxa yenqubo yokukhiqiza ezenzakalelayo ngokugcwele, ikhwalithi ephezulu ingaphinde ikhiqizwe noma nini.
Bese, ukuhlolwa kweziphazamisi ngenqubo ye-X-ray kusetshenziswa ukuze kuqinisekiswe izikhundla kanye nokuphelela kwezingxenye zangaphakathi, kanye nekhwalithi yamaphoyinti okubrawuza.Iqinisekisa ikhwalithi ephezulu yeziphazamisi ze-vacuum.
Ngesikhathi sokwakha, amandla aqondile we-dielectric angaphakathi wesiphazamisi se-vacuum asungulwa nge-voltage ekhuphuka kancane kancane, futhi lokhu kuqinisekiswa ukuhlolwa okwalandela kombani we-impulse voltage.Yomibili imisebenzi yenziwa ngamavelu aphezulu kunalawo ashiwo kumazinga, njengobufakazi bekhwalithi yeziphazamisi ze-vacuum.Lokhu kuyisidingo sokukhuthazela isikhathi eside nokutholakala okuphezulu.
Ngaphansi kwezimo ezithile, i-vacuum circuit breaker ingaphoqa i-current in circuit to zero ngaphambi kukaziro wemvelo (kanye nokuguqulwa kwamanje) kusekethi yamanje eshintshanayo.Uma isikhathi sokusebenza kwesiphazamisi singalungile ngokuphathelene ne-AC-voltage waveform (lapho i-arc icishiwe kodwa abathintwayo basanyakaza futhi i-ionization ingakashabalali kusiphazamisi), i-voltage ingase yeqe i-voltage ye-standard yegebe.
Kulezi zinsuku, ngokusika okuphansi kakhulu kwamanje, ama-vacuum circuit breaker ngeke abangele ukugcwala ngokweqile okungase kunciphise ukufakwa kwezinto ezisetshenziswayo ezizungezile.