Lub neej sealing thiab tu-dawb ua haujlwm
Cov txheej txheem tsim khoom ntawm lub tshuab nqus tsev cuam tshuam kom ntseeg tau tias lawv tau "raug kaw rau lub neej," tshem tawm qhov xav tau rau kev soj ntsuam txuas ntxiv lossis kev ntsuas nruj raws sijhawm raws li tau teev tseg hauv IEEE Standard C37.100.1, kab lus 6.8.3. Qhov kev sib khi hermetic no tau ua tiav los ntawm cov txheej txheem brazing qib siab thiab lub tshuab nqus tsev siab, ua kom ntseeg tau tias lub tshuab nqus tsev ruaj khov nyob thoob plaws lub neej ua haujlwm ntawm lub cuab yeej. Cov yam ntxwv no txo qis kev saib xyuas thiab txhim kho kev ntseeg tau ntawm lub tshuab nqus tsev cuam tshuam.
Tam sim no Chopping thiab Overvoltage Kev txhawj xeeb
Nyob rau hauv qee qhov kev ua haujlwm, lub tshuab nqus tsev twj tso kua mis tuaj yeem yuam cov tam sim no hauv Circuit Court mus rau xoom ua ntej lub ntuj zero hla thiab thim rov qab ntawm qhov hloov tam sim no. Qhov tshwm sim no, hu ua kev txiav tam sim no, tuaj yeem tshwm sim yog tias qhov cuam tshuam lub sijhawm ua haujlwm tsis zoo cuam tshuam rau AC voltage waveform. Tshwj xeeb, yog tias lub arc raug tua tab sis cov kev sib cuag tseem tab tom txav thiab ionization tseem tsis tau ploj mus, qhov hluav taws xob hla qhov sib txawv tuaj yeem tshaj qhov cuam tshuam ntawm qhov cuam tshuam. Qhov no tuaj yeem ua rau rov pib dua ntawm lub arc, ua rau muaj kev hloov pauv sai sai thiab qhia oscillations rau hauv lub cev. Cov oscillations no tuaj yeem ua rau muaj kev cuam tshuam loj heev, ua rau muaj kev pheej hmoo rau kev rwb thaiv tsev ntawm cov khoom siv ib puag ncig.
Cov tswv yim txo qis
Nqus-interrupter manufacturers hais txog cov kev txhawj xeeb no los ntawm kev ua tib zoo xaiv cov ntaub ntawv tiv tauj thiab tsim kev sib cuag kom txo qis tam sim no. Cov khoom siv feem ntau suav nrog tooj liab-chromium alloys, uas muaj cov khoom siv hluav taws xob zoo thiab thermal, nrog rau kev tiv thaiv arc yaig. Cov kev sib cuag feem ntau yog zoo li cov slots, ridges, los yog grooves los tsim magnetic teb uas txav lub arc qhov chaw nyob rau ntawm qhov chaw tiv tauj, txo qis hauv zos hnav thiab tswj qhov qis arc voltage.
Txhawm rau tiv thaiv cov cuab yeej los ntawm overvoltage, lub tshuab nqus tsev switchgear feem ntau suav nrog cov surge arresters. Cov khoom siv no yog tsim los nqus thiab dissipate ib ntus overvoltages, kom ntseeg tau tias cov rwb thaiv tsev ntawm cov khoom siv txuas nrog tseem nyob ruaj khov. Surge arresters yog ib qho tseem ceeb hauv cov txheej txheem tiv thaiv tag nrho, muab txheej txheej ntxiv ntawm kev nyab xeeb thiab kev ntseeg tau.
Kev txhim kho niaj hnub
Kev nce qib hauv tshuab nqus tsev cuam tshuam tau ua rau txo qis hauv kev txiav tam sim no. Niaj hnub nimno nqus Circuit Court breakers yog tsim los ua hauj lwm nrog tsawg heev tam sim no chopping theem, txo qhov kev pheej hmoo ntawm induced overvoltage. Yog li ntawd, cov breakers no feem ntau tsis ua rau overvoltage theem uas tuaj yeem cuam tshuam cov rwb thaiv tsev ntawm cov khoom siv nyob ib puag ncig. Qhov kev txhim kho no yog qhov tseem ceeb rau kev tswj xyuas kev ncaj ncees thiab kev nyab xeeb ntawm cov tshuab hluav taws xob, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas muaj kev ntseeg siab thiab kev ua tau zoo yog qhov tseem ceeb.
Cov txheej txheem tsim khoom ntawm lub tshuab nqus tsev cuam tshuam kom ntseeg tau tias lawv tau "sau rau lub neej", tshem tawm qhov xav tau kev saib xyuas thiab kev ntsuas nruj. Txawm li cas los xij, nyob rau hauv qee qhov xwm txheej, kev txiav tam sim no tuaj yeem tshwm sim, ua rau overvoltage thiab kev puas tsuaj rau cov khoom siv. Txhawm rau txo cov kev pheej hmoo no, cov tuam ntxhab siv cov ntaub ntawv sib txuas thiab cov qauv tsim, thiab lub tshuab nqus tsev hloov pauv tau nruab nrog cov surge arresters los tiv thaiv overvoltage. Kev nce qib niaj hnub no tau txo qis tam sim no, kom ntseeg tau tias lub tshuab nqus tsev hluav taws xob tsis cuam tshuam cov qib overvoltage uas tuaj yeem ua rau cov khoom siv nyob ib puag ncig, yog li txhim kho tag nrho kev ntseeg siab thiab kev nyab xeeb ntawm hluav taws xob.
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Technical Parameters
| Cov ntaub ntawv | Chav tsev | Tus nqi |
| Rated Zaus | Hz | 50 |
| Rated Voltage | kV ua | 12 |
| Rated Lub Sijhawm luv luv Nrog Voltage | kV ua | 48 |
| Rated Lightning Impulse Withstand Voltage | kV ua | 85 |
| Rated Tam sim no | A | 1250 |
| Circuit Court Resistance ntawm qhov qis tshaj qhov sib tiv tauj quab yuam | μΩ | Tsawg dua los yog sib npaug li 25 |
| Rated Short-circuit Breaking Current | kA | 25 |
| Rated Short-circuit Breaking Tam sim no Breaking Sijhawm | Sijhawm | 30 |
| Rated Lub Sijhawm luv luv Nrog rau tam sim no | kA | 25 |
| Rated Duration ntawm Short-circuit | s | 4 |
| Rated Peak Nrog Tam Sim No | kA | 63 |
| Rated Short-circuit Making Current | kA | 63 |
| Rated Operaing Sequence | O{{0}}.3(0.5)s-CO-180s-CO | |
| Tiv tauj Stroke | mm | 11±1 |
| Hu rau Kaw Force | N | 80±30 |
| Yuav tsum tau yuam kom tuav cov neeg sib cuag qhib ntawm tag nrho cov hlab ntsha tawg | N | 160±40 |
| Qhov Nruab Nrab Qhib Ceev (thawj 75% stroke) | m/s | 1.0±0.2 |
| Nruab nrab Kaw Ceev (kawg 30% stroke) | m/s | 0.65±0.15 |
| Rated Contact Force | N | 2000±200 |
| Hu rau Force ntawm Touch Point | N | 1400±100 |
| Hu rau Kaw bouncing Duration | ms | Tsawg dua los yog sib npaug 2 |
| Hu rau qhib thiab kaw Tsis yog ib txhij | ms | Tsawg dua los yog sib npaug 2 |
| Hu rau Qhib Rebound Amplitude | mm | Tsawg dua los yog sib npaug 2 |
| Lub neej cia | Xyoo | 20 |
| Mechanical Endurance | Sijhawm | 10000 |
| Hu rau Erosion Limit | mm | 3 |
