Creepage nrug debNyob rau hauv cov ntsiab lus ntawm transformers yog hais txog txoj kev luv tshaj plaws raws cov khoom siv hluav taws xob luv tshaj plaws uas cov hluav taws xob tam sim no yuav taug kev hauv qhov txhaum lossis hluav taws xob xau. Nws yog lub cev nrug deb tshaj lub insulating nto ntawm cov chaw ua haujlwm (xws li cov windings, thiab lwm yam. Txhawm rau zam dhau los ntawm kev tawg lossis tawg.
TusCreepage nrug debyog qhov tseem ceeb tshaj plaws hauv kev ua kom muajRwb thaiv tsev kev koom siabNtawm lub transformer, tshwj xeeb tshaj yog nyob rau hauv high - voltage gradients tuaj yeem ua tsis tiav yog tias qhov kev ncua deb yog luv heev.
Cov ntsiab lus tseem ceeb txog kev ncua deb hauv kev hloov pauv
Creepage vs. tshem tawm:
Creepage nrug debHais txog qhov kev ncua deb raws cov rwb thaiv tsev, xws li raws lub cev ntawm cov transformer lossis raws cov ntaub ntawv insulating sab nraud.
Kev ncua debYog hais txog cov huab cua tsis muaj huab cua luv tshaj plaws ntawm ob qho chaw ua haujlwm (feem ntau ntawm cov chaw nyob thiab qhov chaw av).
Ob qho yog qhov tseem ceeb rau lub transformer tus qauv, tshwj xeeb tshaj yog nyob rau hauv cov rwb thaiv tsev tuaj yeem tiv thaiv cov hluav taws xob thiab tiv thaiv kev rhuav tshem lossis arcing.
Yam cuam tshuam rau kev ncua deb:
Voltage theem: Cov siab dua qhov hluav taws xob, qhov ntau dua qhov kev ncua deb yuav tsum tau los tiv thaiv cov plhaw lossis hluav taws xob xau. Qhov no yog vim tias cov hluav taws xob siab tsim kev ntxhov siab ntau dua ntawm cov rwb thaiv tsev.
Degion degree: Qhov uas ib puag ncig zoo li cov av noo, hmoov av, thiab cov pa phem tuaj yeem txwv lub rwb thaiv tsev zoo. Hauv kev qias ib puag ncig, kev sib nrug deb yuav tsum tau them ntev dua rau cov kab muaj peev xwm tsim los ntawm cov av lossis dej noo nyob saum npoo.
Rwb thaiv tsev ntaub: Hom khoom siv rwb thaiv tsev siv (piv txwv li, plooj (porcexy, silicone roj hmab, thiab lwm yam) kuj cuam tshuam rau cov kev yuav tsum muaj kev ncua deb. Cov ntaub ntawv sib txawv muaj cov khoom deedrictric sib txawv thiab withstand voltage txwv.
Huab cua huab cua: Transformers nruab rau hauv high - av noo lossis siab {{1} -}}}}}}}} }{ temperature້ນ yuav tsum muaj kev ua haujlwm zoo rau lawv txoj kev pabcuam lub neej.
Cov qauv rau kev nkag mus deb: Muaj cov qauv thoob ntiaj teb uas tswj hwm qhov tsawg kawg nkaus rau kev hloov pauv. Cov qauv uas hais txog feem ntau suav nrog:
IEC 60076: Cov txheej txheem no tau muab cov lus qhia rau tus qauv, kev xeem, thiab rwb thaiv tsev cov kev xav tau ntawm cov hluav taws xob hluav taws xob, nrog rau cov kev ntsuas kev ntsuas hluav taws xob thiab cov xwm txheej ib puag ncig.
Iec 60815: Tus qauv no muab cov lus qhia ntawm kev xaiv ntawm cov cuab yeej hluav taws xob, suav nrog cov khoom lag luam hluav taws xob sab nraud, suav nrog cov chaw ua kom muaj kuab paug.
Mis rau kev xam nkag mus deb: Lub cig repino kev deb yog feem ntau txiav txim siab raws li lubnominal voltagentawm transformer thiab tusDegion degreentawm kev teeb tsa ib puag ncig. Thaum cov kev suav hais tias feem xyuam yog nyob ntawm cov qauv hauv zos thiab cov khoom siv rwb thaiv tsev, cov cai ntawm tus ntiv tes xoo rau high- voltage transform yog:
Creepage deb =} Noominal voltage \\ ntawv}} {}} qhov tseeb × nominal voltage
Tusyam tseem ceebKev sib txawv nyob ntawm seb theem pa phem, cov khoom siv, thiab kev teeb tsa ib puag ncig. Piv txwv li, hauv kev mob ua kom muaj kuab paug, kev nkag mus yuav tsum yog 1.5-2 npaug ntev dua rau ib puag ncig huv.
Creepage nrug kev xyaum: Rau kev xa khoom xa khoom:
Ntawm cov qib qis dua (piv txwv li, 11 kV), qhov kev ncua deb yuav muaj los ntawm10 cm mus rau 20 cm.
Rau cov qib voltage ntau dua (piv txwv li, 110 kV), qhov kev nkag mus yuav yogntau dua 1 meterlossis ntau dua, nyob ntawm qhov xwm txheej uas tau hais los saud.
Cov qauv tsim tshwj xeeb ntawm cov hloov pauv, suav nrog kev npaj ntawm cov windings thiab hom kev siv cov khoom siv insulating, yuav cuam tshuam rau kev ncua deb
