Kev piav qhia ntxaws txog kev xaiv tooj liab BusBars, kev suav lub peev xwm nqa tam sim no, thiab khoov txheej txheem rau High Voltage Switchgear

Lub peev xwm nqa tam sim no ntawm lub tsheb npav hluav taws xob tooj liab hais txog qhov siab tshaj plaws tam sim no nws tuaj yeem nqa mus tas li yam tsis pub tshaj nws qhov ntsuas kub raws li qhov xwm txheej. Hauv kev tsim kho vaj tsev, tam sim no lub peev xwm nqa tau ntawm kev khoov tooj liab busbar tsis yog tus nqi ruaj khov, tab sis qhov ntsuas tsis zoo cuam tshuam los ntawm ntau yam xws li kev teeb tsa, qhov kub thiab txias, ntoo khaub lig- cov duab ntu, thiab cov txheej txheem ntau lawm.

Ua ntej, txoj kev teeb tsa muaj kev cuam tshuam loj heev rau cov cua sov dissipation. Txoj kev txhim kho nyob rau hauv lub txee feem ntau muab faib ua kab rov tav thiab ntsug. Txij li qhov chaw ntsug siv cov cua sov dissipation deg cheeb tsam ntau dua thiab ua tiav cov cua convection zoo dua, lub peev xwm nqa tam sim no ntawm qhov chaw ntsug feem ntau yog me ntsis ntau dua li qhov kev tso kawm kab rov tav. Qhov no yog vim li cas cov busbars tseem ceeb hauv cov khoom xa khoom loj feem ntau yog ntsia tau rau hauv vertically.

Qhov thib ob, qhov kub thiab txias ambient yog ib qho kev hloov pauv tseem ceeb uas yuav tsum tau xav txog. Tus qauv siv ambient kub feem ntau yog 35℃lossis 40 degree. Thaum qhov tseeb ambient kub siab tshaj qhov kev siv no, lub peev xwm nqa tam sim no ntawm chatsworth hauv av tsheb npav bar yuav txo qis, thiab nws yuav tsum tau muab faib ua qhov sib npaug ntawm qhov ntsuas kub; conversely, qhov kub thiab txias, qhov ntau tam sim no nqa peev xwm yuav tsim nyog nce.

Hauv kev kwv yees engineering, peb tuaj yeem siv cov qauv empirical rau kev suav nrawm. Rau ib qho tooj liab busbar dabtsi yog khoov, nws lub peev xwm nqa tam sim no yog kwv yees li qhov sib npaug ntawm lub busbar dav (mm) multiplied los ntawm thickness coefficient. Lub thickness coefficient muaj feem xyuam rau tooj liab hauv av busbar thickness; Piv txwv li, ib tug 10 hli tuab busbar muaj ib tug coefficient ntawm kwv yees li 18, thiab ib tug 12 hli tuab busbar muaj ib tug coefficient ntawm kwv yees li 20.

Rau ntau- txheej txheej, vim muaj cua sov dissipation tsis zoo, lub peev xwm nqa tam sim no tsis yog qhov yooj yim ntau ntxiv. Lub peev xwm nqa tam sim no ntawm ob - txheej busbar feem ntau yog li ntawm 1.56 txog 1.58 npaug ntawm ib qho - txheej busbar, peb txheej txog 2 zaug, thiab plaub txheej txog 2.45 zaug. Txawm li cas los xij, nws tsim nyog sau cia tias plaub txheej thiab saum toj no tsis pom zoo rau cov ntawv thov engineering vim muaj teeb meem hauv cov cua sov dissipation thiab cov nyhuv ntawm daim tawv nqaij tseem ceeb; Nws raug nquahu kom siv cov busbars tsis tu ncua lossis ib qho -txheej busbars nrog tus ntoo khaub lig loj dua - ntu hloov.

Hauv siab -voltage switchgear tsim, tsuas yog ua tau raws li qhov ntsuas tam sim no nqa lub peev xwm yuav tsum tau nyob deb ntawm qhov txaus. Lub tsheb npav hauv av hluav taws xob yuav tsum muaj peev xwm tiv taus qhov cuam tshuam ntawm lub cev luv luv -circuit tam sim no, piv txwv li, ua tau raws li "luv-lub sijhawm tiv thaiv tam sim no" qhov yuav tsum tau ua. Qhov no yog qhov tseem ceeb los xyuas kom meej tias electrolytic tooj liab busbar yuav tsis yaj vim overheating los yog ua rau cov khoom puas thaum muaj ib tug luv luv - Circuit Court txhaum.

Raws li cov qauv hauv Cov Ntawv Ntxiv D ntawm GB3906 tus qauv, peb tuaj yeem xam qhov tsawg kawg nkaus tus ntoo khaub lig- ntu ntu ntawm cov tsheb npav hauv av cais raws li thermal stability. Tus qauv yog: S=(I / a) × √(t / Δθ). Qhov twg S yog tus neeg xyuas pib hla- ntu ntu, Kuv yog qhov ntsuas luv luv- lub sijhawm tiv thaiv tam sim no (luv-circuit tam sim no), a yog cov khoom siv coefficient (13 rau tooj liab), t yog luv - lub sijhawm luv luv (feem ntau yog 4 vib nas this rau siab - voltage 2K) thiab qhov ntsuas kub ntawm θ 1. liab qab conductors).

Cov qauv no tuaj yeem siv los ua kom tau qhov tsawg kawg nkaus hla- ntu ntu yuav tsum muaj rau qhov sib txawv luv luv- kev ntsuas hluav taws xob. Piv txwv li, rau 25kA / 4S system, qhov tsawg kawg nkaus tus ntoo khaub lig-sectional cheeb tsam ntawm lub telecom hauv av bar bar yuav tsum yog 260mm²; rau 31.5kA/4S system, qhov tsawg kawg nkaus tus ntoo khaub lig-sectional cheeb tsam yuav tsum yog 330mm²; thiab rau 63kA / 4S system, nws yuav tsum yog 660mm². Hauv kev xaiv tiag tiag, cov neeg tsim qauv yuav tsum suav tus ntoo khaub lig- ntu ntu xav tau rau qhov ntsuas tam sim no thiab tus ntoo khaub lig- ntu ntu xav tau rau luv- Circuit Court tiv taus, thiab coj tus nqi siab tshaj plaws ntawm ob qhov kev xaiv zaum kawg. Piv txwv li, ib lub voj voog uas muaj qhov ntsuas tam sim no ntawm 630A tsuas yog yuav tsum muaj 40 × 6 hla- ntu, tab sis yog tias lub kaw lus luv -circuit tam sim no yog 31.5kA, ces ib qho ntoo khaub lig- ntu tsis pub tsawg dua 330mm² (xws li 60 × 6) yuav tsum raug xaiv kom muaj kev nyab xeeb ntawm lub cev.

Qhov tseeb machining ntawm BusBar rau Siemens ncaj qha cuam tshuam qhov yooj yim ntawm installation nyob rau hauv lub txee thiab ua raws li cov hluav taws xob clearances. Thaum lub sij hawm khoov thiab blanking txheej txheem, "cov ntaub ntawv ntev," piv txwv li, qhov ntev unfolded, yuav tsum raug xam kom raug. Vim hais tias BusBar rau Weidmuller tau txais cov yas deformation ntawm qhov taw tes dabtsi yog khoov- sab nraud yog stretched thiab elongated, thaum sab hauv yog compressed thiab shortened - ib tug them nyiaj coefficient yuav tsum tau nkag mus rau hauv lub xam.

Rau cov kev khoov zoo sib xws (txoj cai-lub kaum sab xis), ob qho tib si "sab nraud suav txheej txheem" ​​lossis "txoj kev suav sab hauv" feem ntau siv hauv engineering. Cov qauv dav dav rau txoj kev suav sab nraud yog: Tag Nrho Length=Sum ntawm qhov ntev ntawm txhua ntu + Cov Nqi Them Nqi - Coefficient × Tus lej ntawm Txoj Cai - Lub kaum ntse ntse. Qhov tshwj xeeb them nyiaj coefficient yog cuam tshuam nrog lub thickness ntawm BusBar Insulator Manufacturers; Piv txwv li, rau 3 hli tuab cov ntaub ntawv, txhua txoj cai - lub kaum sab xis khoov yuav xav tau kev tso cai ntxiv ntawm kwv yees li 0.3 hli, thaum 10 hli tuab cov ntaub ntawv xav tau ntau dua. Thaum ua cov txheej txheem ntau- txheej khoov lossis cov duab nyuaj, cov teebmeem ntawm lub vojvoog dabtsi yog khoov thiab lub kaum sab nraub qaum yuav tsum tau txiav txim siab.

Tsis tas li ntawd, txhawm rau tiv thaiv qhov tso tawm, BusBars rau Mersen Ferraz nyob rau hauv lub siab -voltage switchgear feem ntau yuav tsum tau chamfering lossis rounded rectangles. Qhov no tsis yog tsuas yog txhim kho cov hluav taws xob faib hluav taws xob tab sis kuj tseem txhim kho kev ua haujlwm rwb thaiv tsev. Thaum lub sij hawm tsim khoom, dabtsi yog khoov cov ces kaum thiab qhov ntev ntev yuav tsum nruj me ntsis tswj kom muaj kev ntxhov siab tsawg kawg nkaus thaum lub sij hawm tooj liab Ground Bus Bar installation, tiv thaiv kev puas tsuaj rau rwb thaiv tsev Cheebtsam los yog tsis sib xws kev nyuaj siab ntawm kev sib cuag nto vim raug yuam installation.

Hauv cov ntsiab lus, kev xaiv thiab tsim ntawm Distribution BusBars yog ib qho kev sib koom ua ke engineering project ua ke nrog kev suav hluav taws xob thiab cov txheej txheem siv tshuab. Tsuas yog los ntawm kev xav txog tam sim no muaj peev xwm nqa tau, thermal stability, thiab kev tsim khoom thiab kev teeb tsa tiag tiag tuaj yeem tsim lub zog txuag hluav taws xob thiab nyab xeeb.