Isiphazamisi seVacuum yeMV VCB(iqokobhe leceramic, amandla ombane alinganisiweyo: 7.2kV-12kV) Umfanekiso okhoyo

Isiphazamisi seVacuum yeMV VCB(iqokobhe leceramic, Umbane olinganisiweyo: 7.2kV-12kV)

Iinkcukacha zeMveliso

Iithegi zeMveliso

Inkcazo emfutshane yemveliso:

Ukunqunyulwa kwangoku kwi-vacuum circuit breaker kuxhomekeke kuxinzelelo lomphunga kunye neempawu zokukhutshwa kwe-electron yezinto zoqhagamshelwano.Inqanaba lokunqunqa liphinde liphenjelelwe yi-thermal conductivity-ezantsi i-thermal conductivity, ephantsi yinqanaba lokusika.
Kuyenzeka ukunciphisa inqanaba langoku apho ukunqunyulwa kwenzeka khona ngokukhetha imathiriyeli yoqhagamshelwano ekhupha umphunga wesinyithi owaneleyo ukuvumela umsinga ukuba ufike kwixabiso eliphantsi kakhulu okanye ixabiso elingu-zero, kodwa oku akufane kwenzeke njengoko kuchaphazela kakubi amandla edielectric. .
Amandla aphezulu okugquma: Xa kuthelekiswa nezinye izinto ezahlukeneyo zokukhusela ezisetyenziswa kwi-vacuum ye-circuit breaker yi-dielectric medium ephezulu.Kungcono kunawo wonke amanye amajelo ngaphandle komoya kunye ne-SF6, eziqeshwe kuxinzelelo oluphezulu.
Xa i-arc ivulwa ngokuhambisa ngaphandle abafowunelwa kwi-vacuum, uphazamiseko lwenzeka kwi-zero yokuqala yangoku.Ngokuphazamiseka kwe-arc, amandla abo e-dielectric anyuka ukuya kuthi ga kwisantya samawakawaka xa kuthelekiswa nezinye izaphuli.

Qwalasela

(1) Amanyathelo okuthintela ukugqithiswa kwamandla.I-vacuum circuit breaker inomsebenzi omhle wokuqhawula.Ngamanye amaxesha xa kuphulwa umthwalo wokufakelwa, ukugqithisa okuphezulu kuveliswa kuzo zombini iziphelo ze-inductance ngenxa yokutshintsha ngokukhawuleza kwe-loop yangoku.Ngoko ke, kwii-transformers zohlobo olomileyo kunye nezinye izixhobo ezinokumelana nombane ophantsi we-impulse, kungcono ukufaka izixhobo zokukhusela i-overvoltage, ezifana ne-metal oxide arresters.
(2) Lawula ngokungqongqo umthwalo wangoku.
Umthamo ogqithisiweyo we-vacuum circuit breaker umbi.Ekubeni ukufakwa kwe-thermal kwenziwa phakathi koqhagamshelwano kunye negobolondo ye-vacuum circuit breaker, ukushisa kwi-contact kunye nentonga ye-conductive ihanjiswa ngokukodwa kunye nentonga yokuqhuba.Ukuze wenze ukushisa okusebenzayo kwe-vacuum circuit breaker kungadluli ixabiso elivumelekileyo, ukusebenza kwayo kufuneka kukhawulelwe ngokungqongqo ukuba kube ngaphantsi kunomlinganiselo olinganisiweyo.

Ngaphambili: Isiphazamisi seVacuum yeMV VCB(iqokobhe leceramic, Umbane olinganisiweyo: 7.2kV-12kV)

Okulandelayo: Isiphazamisi seVacuum yeMV VCB(iqokobhe leceramic, Umbane olinganisiweyo: 7.2kV-12kV)

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