12kV 1250A 31.5kA iVoltage ePhezulu yeVacuum Vacuit Breaker yeSekethe

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I-China VD4 series vacuum vacuum-breakers zizixhobo zofakelo lwangaphakathi lwe-switchgear.Nceda uqhagamshelane ne-ROCKWILL ngeemfuno ezizodwa zofakelo.I-VD4-R yoluhlu oluphakathi lwezaphuli zesekethe zesivacuum zombane ezinendlela yokusebenza esecaleni yofakelo lwangaphakathi lubonisa ubuchule bokwakha ipali eyahlukileyo.Ipali nganye igcina isiphazamisi sevacuum esibiyelwe kwiresin xa isilinda sibunjwa ngenxa yenkqubo ekhethekileyo yokwenziwa.Le ndlela yokwakha ikhusela isiphazamisi sevacuum ekothukeni, kungcoliseko kunye nokuxinana.
Umatshini wokusebenza luhlobo lwamandla agciniweyo oluhamba simahla kunye nokuvulwa ngokuzimeleyo kunye nokuvala nokuba sithini isenzo somsebenzisi.Indlela yokusebenza isetyenziswa ngokubanzi kuzo zonke ii-VD4-R series circuit-breakers kunye nolawulo lwangaphambili.
I-circuit-breaker inokulawulwa kude xa ifakelwe izixhobo zombane ezinikezelweyo (i-gearmotor, ukukhululwa kokuvula kunye nokuvala).
Indlela yokusebenza, iipali ezintathu kunye ne-sensor zangoku (ukuba zinikezelwe) zifakwe kwisakhelo sesinyithi ngaphandle kwamavili.Ulwakhiwo luxinene ngakumbi, lomelele kwaye linobunzima obulinganiselweyo.
I-VD4-R ichungechunge lwe-circuit-breakers kunye neendlela zokusebenza ezisecaleni zixhobo zoxinzelelo ezitywinwe ubomi obude.(Imigangatho ye-IEC 62271-100)

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Vacuum-breaker-circuit   **4/R 12 **4/R 17 **4/R 24
Imigangatho   *     *     *    
Umbane olinganisiweyo Ur(kV) 12     17.5     24    
I-voltage elinganisiweyo yokufakelwa Us(kV) 12     17.5     24    
Ukumelana nombane kwi-50Hz Ud(kV) 28     38     50    
Impulse imelana nombane Phezulu(kV) 75     95     125    
Ilinganiswe rhoqo fr(Hz) 50-60     50-60     50-60    
Ilinganiswe kwi-thermal current Ir(A) 630 800 1250 630 800 1250 630 800 1250
Umthamo wokwaphulwa komsebenzi olinganisiweyo
(i-symmetrical rated i-short-circuit current)
Isc(kA) 12.5 / / 12.5 / / 12.5 / /
16 16 16 16 16 16 16 16 16
20 20 20 20 20 20 20 20 20
25 25 25 25 25 25 / / /
Ukumelana nexesha elifutshane (3s) Ik(kA) 12.5 / / 12.5 / / 12.5 / /
16 16 16 16 16 16 16 16 16
20 20 20 20 20 20 20 20 20
25 25 25 25 25 25 / / /
Ukwenza umthamo Ip(kA) 31.5 / / 31.5 / / 31.5 / /
40 40 40 40 40 40 40 40 40
50 50 50 50 50 50 50 50 50
63 63 63 63 63 63      
                 
Ukwenza umthamo   * * *
Ixesha lokuvula ms 40...60 40...60 40...60
Ixesha le-arcing ms 10...15 10...15 10...15
Ixesha lekhefu lilonke ms 50...75 50...75 50...75
Ixesha lokuvala ms 30...60 30...60 30...60
Ikhowudi Iinguqulelo ezikhoyo
Ukuvala iqhosha lokutyhala **Izaphuli-mthetho ezi-4 ezinendlela yokusebenza esecaleni ziyafumaneka
ezi nguqulelo zilandelayo:
Isalathisi esivuliweyo/esivaliweyo      
Ikhutshiwe Umgama ophakathi P=()mm Ilungisiwe Iyasuswa
Ikhawuntara yokusebenza 210 210
Umqheba wokutshaja ngesandla 230 230
Ukuvula iqhosha lokutyhala 250 250
Ukukhuselwa kodluliso 275 275
Ibhokisi ye-terminal yonikezelo 300 300
I-transformer yangoku 310 310
Polo      

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