Isiphazamisi se-vacuum se-low voltage circuit breaker(604)

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Incazelo emfushane yomkhiqizo:

Kuma-circuit breaker, izinto zokuxhumana ze-vacuum-interrupter ngokuyinhloko ziyingxubevange ye-copper-chromium engu-50-50.Angase enziwe ngokushisela ishidi lengxubevange ye-copper-chrome endaweni engaphezulu nephansi yokuxhumana phezu kwesihlalo sokuxhumana esenziwe ngethusi elingenawo umoya-mpilo.Ezinye izinto, njengesiliva, i-tungsten ne-tungsten compounds, zisetshenziswa kweminye imiklamo yeziphazamisi.Isakhiwo sokuthinta isiphazamisi se-vacuum sinomthelela omkhulu kumthamo waso wokuphuka, ukuqina kukagesi kanye nezinga lokunqunywa kwamanje.
Izivunguvungu zesiphazamisi se-vacuum zivumela ukuthintana okunyakazayo ukuthi kuqhutshwe ngaphandle kwendawo evalekile yesiphazamisi, futhi kufanele kugcine i-vacuum ephezulu yesikhathi eside ngaphezu kwempilo yokusebenza elindelwe yesiphazamisi.Izifutho zenziwe ngensimbi engagqwali enogqinsi luka-0.1 kuya ku-0.2 mm.Impilo yayo yokukhathala ithintwa ukushisa okwenziwa ku-arc.

Ukuze bakwazi ukuhlangabezana nezidingo zokukhuthazela okuphezulu ekusebenzeni kwangempela, ama-bellows ahlala evivinywa ukubekezela njalo ezinyangeni ezintathu.Ukuhlola kwenziwa ekhabetheni lokuhlola elizenzakalelayo ngokugcwele futhi uhambo lulungiselelwa uhlobo olufanele.
Izingxenye ezincane zeziphazamisi 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).
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 icishwa kodwa abathintwayo basanyakaza futhi i-ionization ingakashabalali kusiphazamisi), i-voltage ingase yeqe i-voltage ye-gap. okhela i-arc, okubangela imisinga yesikhashana esheshayo.Kunoma ikuphi, i-oscillation yethulwa ohlelweni olungase lube nomphumela omkhulu phezu kwe-voltage.Abakhiqizi be-vacuum-interrupter babhekana nalokhu kukhathazeka ngokukhetha izinto zokuxhumana kanye nemiklamo ukuze banciphise ukusika kwamanje.Ukuze kuvikelwe okokusebenza ku-voltage engaphezu kwamandla, amagiya okushintsha ivacuum ngokuvamile ahlanganisa izibambisi zokuhlinzwa.