High-voltage circuit breakers ua ob lub luag haujlwm tseem ceeb hauv lub tshuab hluav taws xob: tswj thiab tiv thaiv. Ua ntej, lawv tswj kev ua haujlwm ntawm cov khoom siv hluav taws xob lossis cov kab los ntawm kev hloov mus rau hauv lossis tawm ntawm kev pabcuam raws li xav tau. Qhov thib ob, lawv tiv thaiv kev ua txhaum ntawm cov khoom siv lossis kab los ntawm kev sib txuas sai sai ntawm qhov tsis raug ntawm lub zog hluav taws xob los ntawm cov khoom siv tiv thaiv relay, kom ntseeg tau tias kev ua haujlwm zoo ntawm cov ntu tsis raug cuam tshuam.
Muaj ntau ntau hom high -voltage Circuit Court breakers, tab sis cov txheej txheem lawv tag nrho muaj tsib yam tseem ceeb: cov khoom tawg, txhawb kev rwb thaiv tsev, cov khoom sib kis, lub hauv paus, thiab kev ua haujlwm. Cov khoom tawg yog lub hauv paus tseem ceeb, lub luag haujlwm rau kev tswj thiab kev tiv thaiv. Lwm cov khoom siv yog tsim los ua haujlwm ua ke nrog cov khoom tawg kom ua tiav cov haujlwm no.
Circuit Court breakers tuaj yeem muab faib ua hom hauv qab no raws li arc - tua nruab nrab siv:
Roj Circuit Court Breakers: Circuit Court breakers uas siv roj transformer raws li arc -extinguishing nruab nrab hu ua roj Circuit Court breakers. Yog hais tias cov roj hauv Circuit Court breaker kuj ua hauj lwm raws li rwb thaiv tsev tom qab tawg thiab raws li lub rwb thaiv tsev nruab nrab ntawm cov khoom nyob thiab hauv av casing, nws yog hu ua multi- roj Circuit Court breaker. Yog tias cov roj tsuas yog siv los ua qhov arc - tua nruab nrab thiab ua qhov nruab nrab rwb thaiv tsev tom qab kev sib cuag tawg, thaum lub rwb thaiv tsev nruab nrab ntawm cov khoom nyob thiab hauv av yog cov plooj (porcelain) lossis lwm yam xov xwm, nws yog hu ua qis - roj Circuit Court breaker. Cov no feem ntau yog siv rau hauv cov phiaj xwm hluav taws xob ntawm ntau qib voltage uas nquag ua haujlwm thiab siab - nrawm nrawm tsis tas yuav tsum tau ua.
Sulfur Hexafluoride (SF6) Circuit Breakers: Circuit Court breakers uas siv SF6 roj, uas muaj arc zoo heev - tua thiab rwb thaiv tsev zog, raws li lub arc - tua nruab nrab yog hu ua SF6 Circuit Court breakers. Lawv tau siv dav hauv cov tshuab hluav taws xob. Lawv haum rau cov ntawv thov uas yuav tsum tau ua haujlwm nquag thiab siab - nrawm nrawm. Hauv kuv lub tebchaws, SF6 Circuit Court breakers raug pom zoo rau qhov hluav taws xob ntawm 7.2 thiab 40.5 kV, tshwj xeeb tshaj yog rau cov hluav taws xob siab tshaj 126 kV, qhov twg yuav luag txhua SF6 Circuit Court breakers siv. Txawm li cas los xij, lawv tsis haum rau qhov siab - qhov siab.
Nqus Circuit Court Breakers: Circuit Court breakers uas siv lub siab dielectric zog ntawm lub tshuab nqus tsev mus tua arcs yog hu ua lub tshuab nqus tsev Circuit Court breakers. Tam sim no lawv tau siv dav hauv cov khoom siv hluav taws xob (kev faib tawm) cov tes hauj lwm nrog qhov voltage ntawm 7.2-40.5 kV, feem ntau yog rau cov ntawv thov uas yuav tsum tau ua haujlwm ntau zaus thiab siab - cuam tshuam ceev. Txawm li cas los xij, thaum siv hauv thaj chaw ntug dej hiav txwv, yuav tsum tau them nyiaj tshwj xeeb rau kev tiv thaiv condensation, vim qhov no yuav txo tau qhov arc -extinguishing peev ntawm Circuit Court breaker's arc-extinguishing chamber.
Cov saum toj no peb hom Circuit Court breakers feem ntau yog siv nyob rau hauv lub hwj chim systems, thaum ib co qub hom, xws li cua Circuit Court breakers, tau maj phased tawm.
Disconnecting Switches: High-voltage disconnecting keyboards yog siv los cais cov khoom siv hluav taws xob siab -voltage los xyuas kom muaj kev nyab xeeb. Yog li ntawd, lawv cov yam ntxwv ntawm tus yam ntxwv yog pom meej meej disconnecting qhov sib txawv tom qab disconnection. Lwm tus yam ntxwv ntawm tus yam ntxwv yog qhov tsis muaj qhov tshwj xeeb arc - tua hluav taws, yog li lawv tsis tuaj yeem ua haujlwm hauv qab load. Txawm li cas los xij, lawv tso cai rau kev hloov pauv ntawm qee qhov me me tam sim no, xws li unloaded transformers nrog rau qhov excitation tam sim no tsis tshaj 2A, unloaded kab nrog ib tug them capacitor tam sim no tsis tshaj 5A, thiab voltage transformer circuits. Sab hauv tsev disconnecting keyboards siv nyob rau hauv switchgear feem ntau suav nrog GN19 series, GN6 series, thiab GN9 series. Lub disconnecting hloov feem ntau muaj ib feem ntawm conductive, ib qho insulating ib feem, ib tug kis tau tus mob, thiab lub hauv paus.
High-voltage load switches: Kev siv cov hloov pauv hloov tau raws li lawv cov yam ntxwv. Structurely, load keyboards mas tuaj nyob rau hauv ob hom: ib tug yog nws tus kheej mounted rau ntawm phab ntsa los yog ncej, zoo ib yam li nyob rau hauv cov qauv mus rau ib tug disconnecting hloov; lwm qhov yog ntsia rau hauv lub siab -voltage switchgear, tshwj xeeb tshaj yog thaum siv lub tshuab nqus tsev lossis SF6 roj, thiab nyob ze rau lub tshuab hluav taws xob. Kev siv cov khoom siv thauj khoom sib xyaw ua ke cov txiaj ntsig ntawm ob hom.
Thaum nyob rau hauv txoj hauj lwm qhib, lub load hloov, zoo li lub disconnecting hloov, muaj ib tug meej disconnect point, yog li muab hluav taws xob cais. Nws muab cov xwm txheej tsim nyog rau kev siv hluav taws xob tsis zoo ntawm de- cov khoom siv hluav taws xob lossis kab.
Load keyboards muaj qhov yooj yim arc- tua cov cuab yeej, tso cai rau lawv hloov pauv tam sim no hauv lawv qhov ntsuas tam sim no. Lawv tuaj yeem siv los hloov pauv hloov pauv thiab lub tsev txhab nyiaj capacitor ntawm qee lub peev xwm, thiab cov kab xa tawm ntawm qee lub peev xwm. Hauv qee qhov kev cob qhia, lub tshuab hloov hluav taws xob nyob deb ntawm lub tshuab hluav taws xob hauv lub siab -voltage faib chav. Thaum lub sij hawm hluav taws xob hluav taws xob, qhov pom tseeb qhov kev sib txuas tsis pom nyob hauv chav hloov pauv. Yog li ntawd, lub siab -voltage load switch feem ntau yog ntsia rau ntawm phab ntsa ntawm chav tsev transformer. Qhov no tso cai rau kev ua haujlwm yooj yim ntawm lub tshuab hloov pauv tsis muaj - thauj khoom tam sim no thiab muab lub ntsiab lus tsis sib xws, ua kom muaj kev nyab xeeb thiab txhim khu kev qha hluav taws xob.
Load keyboards nruab nrog siab -voltage fuses tuaj yeem siv los ua cov hluav taws xob hluav taws xob uas muaj peev xwm tawg. Nyob rau hauv cov ntaub ntawv no, lub load hloov nws tus kheej yog siv los hloov lub load tam sim no nyob rau hauv ib txwm tej yam kev mob, thaum lub siab -voltage fuse yog siv los cuam tshuam luv luv - Circuit Court txhaum tam sim no. Txawm li cas los xij, cov kev hloov pauv no feem ntau yog lub tshuab nqus tsev-hom lossis sulfur hexafluoride- hom, thiab tag nrho lub nplhaib tseem ceeb yog qhov me me, muaj peev xwm txhawb nqa transformers nrog lub peev xwm siab tshaj plaws ntawm 1250 kVA.