... Isiphazamisi se-Vacuum sase-China se-MV VCB(igobolondo le-ceramic, I-voltage elinganiselwe: 7.2kV-12kV) umphakeli kanye nomkhiqizi kanye Nomthengisi |Kukhanye
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Isiphazamisi se-vacuum se-MV VCB(igobolondo leceramic, i-voltage elinganiselwe: 7.2kV-12kV) Isithombe Esifakiwe
  • Isiphazamisi se-vacuum se-MV VCB(igobolondo leceramic, I-voltage elinganiselwe: 7.2kV-12kV)

Isiphazamisi se-vacuum se-MV VCB(igobolondo leceramic, I-voltage elinganiselwe: 7.2kV-12kV)


Imininingwane Yomkhiqizo

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Incazelo emfushane yomkhiqizo:

Ukunquma kwamanje ku-vacuum circuit breaker kuncike ecindezelweni lomhwamuko kanye nezakhiwo ze-electron ephumayo yento yokuxhumana.Izinga lokunquma liphinde lithonywe yi-thermal conductivity-yehlisa ukuqhutshwa kokushisa, okuphansi yizinga lokunquma.
Kungenzeka ukunciphisa izinga lamanje lapho ukuqotshwa kwenzeka khona ngokukhetha into yokuxhumana enikeza umhwamuko wensimbi owanele ukuvumela owamanje ukuba ufike enanini eliphansi kakhulu noma inani elinguziro, kodwa lokhu akuvamile ukwenziwa ngoba kuthinta kabi amandla e-dielectric. .
Amandla okuvikela aphezulu: Uma kuqhathaniswa neminye imithombo yezokuxhumana ehlukahlukene esetshenziswa ku-circuit breaker vacuum iyi-dielectric medium ephakeme kakhulu.Ingcono kunayo yonke eminye imithombo yezindaba ngaphandle komoya kanye ne-SF6, eqashwe ngengcindezi ephezulu.
Uma i-arc ivulwa ngokuhlukanisa abathintwayo endaweni engenalutho, ukuphazamiseka kwenzeka kuziro wokuqala wamanje.Ngokuphazamiseka kwe-arc, amandla awo e-dielectric akhuphuka afika esilinganisweni sezinkulungwane zesikhathi uma kuqhathaniswa namanye ama-breaker.

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Lalela

(1) Izinyathelo zokuvimbela ukugcwala ngokweqile.I-vacuum circuit breaker inokusebenza okuhle kokuphuka.Kwesinye isikhathi lapho kuphulwa umthwalo ongenisayo, ukugcwala okukhulu kwe-overvoltage kukhiqizwa kuzo zombili iziphetho ze-inductance ngenxa yoshintsho olusheshayo lwe-loop current.Ngakho-ke, kuma-transformer ohlobo olomile kanye nezinye izinto zokusebenza ezinokumelana ne-voltage ephansi ye-impulse, kungcono ukufaka amadivaysi okuvikela ukuguquguquka kwe-overvoltage, njenge-metal oxide arresters.
(2) Lawula ngokuqinile umthwalo wamanje.
Umthamo wokulayisha ngokweqile we-vacuum circuit breaker umpofu.Njengoba ukufakwa kwe-thermal kwakhiwa phakathi kokuxhumana kanye negobolondo le-vacuum circuit breaker, ukushisa othintana naye kanye nenduku ye-conductive kudluliselwa ngokuyinhloko eduze kwenduku ye-conductive.Ukuze wenze izinga lokushisa lokusebenza le-vacuum circuit breaker lingeqi inani elivumelekile, ukusebenza kwayo kufanele kukhawulelwe ngokuqinile ukuze kube ngaphansi kunokwamanje olinganiselwe.

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