Switching fais fab mov - nrhiav kom tau txoj kev ntawm lub hwj chim transformer
A. Xyuas seb puas muaj qhov txawv txav uas pom tseeb los ntawm kev soj ntsuam cov tsos ntawm lub transformer. Xws li seb lub coil lead hlau puas tawg, desoldered, seb cov khoom siv insulating puas muaj cov cim scorched, seb cov hlau tseem ceeb fastening ntsia hlau puas yog xoob, seb cov ntawv silicon steel puas xeb, seb lub coil winding raug, thiab lwm yam.
B. Rwb thaiv tsev kuaj. Ntsuas qhov ntsuas qhov tseem ceeb ntawm cov tub ntxhais hlau thiab lub hauv paus, lub hauv paus thiab txhua theem nrab, cov tub ntxhais hlau thiab txhua theem nrab, cov txheej txheem electrostatic shielding thiab cov theem nrab, thiab cov windings theem nrab nrog multimeter R × 10k. Lub pointer ntawm lub multimeter yuav tsum taw tes rau infinity. Txoj hauj lwm tsis txav. Txwv tsis pub, nws txhais tau hais tias cov rwb thaiv tsev kev ua tau zoo ntawm lub transformer tsis zoo.
C. Kev kuaj xyuas ntawm lub coil on-off. Muab lub multimeter rau hauv R × 1 txoj haujlwm. Thaum lub sij hawm xeem, yog hais tias tus nqi kuj ntawm ib tug winding yog infinite, nws txhais tau hais tias lub winding muaj ib tug qhib Circuit Court txhaum.
D. Paub qhov txawv ntawm cov coils thawj thiab theem nrab. Thawj tus pins thiab lwm tus pins ntawm lub hwj chim transformer feem ntau yog kos los ntawm ob sab, thiab thawj winding feem ntau yog cim nrog 220V, thiab qhov thib ob winding yog cim nrog tus nqi voltage, xws li 15V, 24V, 35V, thiab lwm yam. txheeb xyuas lawv raws li cov cim no.
E. Kev kuaj xyuas tsis muaj kev thauj khoom tam sim no. (1) Kev ntsuas ncaj qha. Qhib tag nrho cov kev sib tw thib ob, muab cov ntsuas ntsuas hauv AC tam sim no iav (500mA, thiab txuas nws nrog cov thawj winding. Tus nqi no yuav tsum tsis txhob ntau tshaj 10 feem pua mus rau 20 feem pua ntawm tag nrho cov load tam sim no ntawm lub transformer. ntau, nws txhais tau hais tias lub transformer muaj ib tug luv luv-circuit txhaum txoj kev. Tom qab fais fab tuag, siv ob qhov kev sim coj los ntsuas qhov ntsuas hluav taws xob poob U hla qhov resistor R, thiab tom qab ntawd siv Ohm txoj cai los xam qhov khoob qhov hluav taws xob, qhov nqa tam sim no kuv khoob, uas yog, kuv khoob { {13}}U/R.
F. Kev kuaj xyuas qhov tsis muaj qhov hluav taws xob. Txuas lub hauv paus ntawm lub hwj chim transformer mus rau 220V mains, thiab siv ib tug multimeter los ntsuas qhov tsis muaj-load voltage tus nqi ntawm txhua winding (U21, U22, U23, U24) nyob rau hauv ib ntus, uas yuav tsum tau raws li tus nqi yuav tsum tau. Qhov kev tso cai yuam kev yog feem ntau: high voltage winding Tsawg dua los yog sib npaug rau ± 10 feem pua, low-voltage windings Tsawg dua los yog sib npaug li ± 5 feem pua, thiab qhov sib txawv ntawm qhov sib txawv ntawm ob pawg ntawm symmetrical windings nrog nruab nrab kais yuav tsum tsawg dua los yog sib npaug ± 2 feem pua.
G. Feem ntau, qhov tso cai kub nce ntawm lub zog me me fais fab transformers yog 40 degree txog 50 degree . Yog tias qhov zoo ntawm cov khoom siv insulating siv tau zoo dua, qhov tso cai kom sov tuaj yeem nce ntxiv.
H. Tshawb xyuas thiab txiav txim qhov kawg ntawm txhua qhov winding nrog tib lub npe. Thaum siv lub tshuab hluav taws xob hloov hluav taws xob, qee zaum ob lossis ntau qhov sib txuas sib txuas sib txuas tuaj yeem txuas rau hauv cov khoom siv txhawm rau kom tau txais qhov xav tau theem nrab voltage. Thaum siv lub hwj chim transformer nyob rau hauv series, cov terminals nrog tib lub npe ntawm cov windings koom nyob rau hauv lub series yuav tsum tau kev cob cog rua kom raug thiab tsis tuaj yeem yuam kev. Txwv tsis pub, lub transformer tsis tuaj yeem ua haujlwm zoo.
I. Kev tshawb nrhiav thiab kev txiav txim siab ntawm qhov tsis raug luv luv hauv lub zog hloov hluav taws xob. Cov tsos mob tseem ceeb tom qab lub luv luv-circuit txhaum ntawm lub hwj chim transformer yog cua sov hnyav thiab txawv txav tawm voltage ntawm lub thib ob winding. Feem ntau, ntau qhov sib cuam tshuam luv luv-circuit cov ntsiab lus hauv lub kauj, qhov luv luv tam sim no ntau dua thiab qhov kub ntawm transformer loj dua. Txoj hauv kev yooj yim los kuaj xyuas thiab txiav txim seb lub tshuab hluav taws xob puas muaj qhov cuam tshuam luv luv yog ntsuas qhov tsis muaj kev thauj khoom tam sim no (txoj kev sim tau qhia ua ntej). Rau transformers nrog luv-circuit faults, tsis muaj-load tam sim no tus nqi yuav ntau dua 10 feem pua ntawm tag nrho-load tam sim no. Thaum lub luv luv Circuit Court yog hnyav, lub transformer yuav ua kom sov sai li sai tau nyob rau hauv kaum vib nas this tom qab tau powered los ntawm tsis muaj load, thiab cov tub ntxhais hlau yuav hnov kub thaum kov los ntawm tes. Nyob rau lub sijhawm no, nws tuaj yeem txiav txim siab tias muaj qhov luv luv Circuit Court point nyob rau hauv lub transformer yam tsis tau ntsuas qhov tsis muaj load tam sim no.
