Kev sim cov txheej txheem rau kev hloov fais fab mov transformers
1. Tshawb xyuas qhov txawv txav los ntawm kev soj ntsuam cov tsos ntawm lub transformer. Piv txwv li, seb cov coil leads puas tawg, desoldered, seb puas muaj cov cim hlawv ntawm cov khoom siv rwb thaiv tsev, seb lub fastening screws ntawm cov tub ntxhais hlau yog xoob, seb cov ntawv silicon steel puas yog xeb, thiab seb lub winding coil puas raug.
2. Kev ntsuas rwb thaiv tsev. Siv lub multimeter R × Ntsuas qhov ntsuas qhov tseem ceeb ntawm cov tub ntxhais thiab thawj, thawj thiab theem nrab, cov tub ntxhais thiab theem nrab, electrostatic shielding txheej thiab theem nrab, thiab theem nrab windings ntawm 10k iav. Lub multimeter pointer yuav tsum tau kho nyob rau hauv infinity. Txwv tsis pub, nws qhia tias tsis zoo rwb thaiv tsev kev ua tau zoo ntawm lub transformer.
3. Kev kuaj xyuas lub kauj ntawm / tawm. Muab lub multimeter nyob rau hauv R × Hauv iav 1, thaum lub sij hawm xeem, yog hais tias tus nqi kuj ntawm ib tug tej yam winding yog infinite, nws qhia tau hais tias muaj ib tug qhib Circuit Court txhaum nyob rau hauv lub winding.
4. Paub qhov txawv ntawm cov coils thawj thiab theem nrab. Thawj thiab thib ob pins ntawm lub hwj chim transformer feem ntau yog coj tawm ntawm ob sab, thiab cov thawj winding feem ntau cim nrog lo lus 220V, thaum lub thib ob winding yog cim nrog tus nqi voltage, xws li 15V, 24V, 35V, thiab lwm yam. Tom qab ntawd txheeb xyuas raws li cov cim no.
5. Kev kuaj xyuas tsis muaj kev thauj khoom tam sim no.
ib. Kev ntsuas ncaj qha. Qhib tag nrho cov windings thib ob thiab tso lub multimeter hauv AC tam sim no ntau yam (500mA). Txuas lub multimeter mus rau thawj winding hauv series. Thaum lub ntsaws ntawm thawj winding yog muab tso rau hauv ib tug 220V AC mains mov, lub multimeter qhia qhov tsis muaj-load tam sim no tus nqi. Tus nqi no yuav tsum tsis pub tshaj 10 feem pua mus rau 20 feem pua ntawm cov transformer tag nrho cov load tam sim no. Qhov ib txwm tsis muaj-load tam sim no ntawm cov khoom siv hluav taws xob siv hluav taws xob sib txawv yuav tsum nyob ib puag ncig 100mA. Yog tias nws dhau ntau dhau lawm, nws qhia tau tias lub tshuab hloov pauv muaj qhov ua txhaum luv luv.
b. Txoj kev ntsuas ntsuas tsis ncaj. Txuas lub 10 nyob rau hauv series nyob rau hauv thawj winding ntawm lub transformer / A tsis kam ntawm 5W, nrog rau tag nrho cov thib ob circuits tseem khoob. Teem lub multimeter rau AC voltage. Tom qab siv lub tshuab hluav taws xob, siv ob lub ntsuas hluav taws xob los ntsuas qhov ntsuas hluav taws xob poob U ntawm ob qho kawg ntawm qhov tsis kam R, thiab tom qab ntawd siv Ohm txoj cai los xam qhov tsis muaj load tam sim no kuv khoob, uas yog, kuv khoob =U / R. F? Kev kuaj xyuas qhov tsis muaj hluav taws xob. Txuas lub hauv paus ntawm lub hwj chim transformer mus rau 220V mains fais fab, thiab siv ib tug multimeter los ntsuas qhov tsis muaj-load voltage qhov tseem ceeb (U21, U22, U23, U24) ntawm txhua winding nyob rau hauv ib theem zuj zus. Qhov yuav tsum tau muaj qhov tseem ceeb yuav tsum tau ntsib, thiab qhov kev tso cai yuam kev yog feem ntau: high-voltage winding Tsawg dua los yog sib npaug rau ± 10 feem pua, low-voltage winding Tsawg dua los yog sib npaug rau ± 5 feem pua, thiab qhov sib txawv voltage ntawm ob pawg ntawm symmetrical windings nrog nruab nrab kais yuav tsum tsawg dua los yog sib npaug rau ± 2 feem pua.
6. Qhov tso cai rau qhov kub siab tshaj plaws rau kev siv hluav taws xob qis hluav taws xob yog nyob nruab nrab ntawm 40 degree thiab 50 degree. Yog tias cov khoom siv rwb thaiv tsev siv tau zoo, qhov kev tso cai kub tuaj yeem nce ntxiv.
7. Tshawb xyuas thiab paub qhov sib txawv ntawm qhov kawg ntawm txhua qhov winding. Thaum siv lub tshuab hluav taws xob hloov hluav taws xob, qee zaum ob lossis ntau qhov sib txuas sib txuas tuaj yeem txuas rau hauv cov khoom kom tau txais qhov xav tau theem nrab voltage. Thaum siv txoj kev sib txuas series los siv lub zog hloov hluav taws xob, qhov kawg ntawm txhua qhov kev sib txuas ntawm kev sib txuas yuav tsum raug txuas thiab tsis tuaj yeem yuam kev. Txwv tsis pub, lub transformer yuav tsis ua haujlwm zoo.
8. Kev tshawb pom dav dav thiab kev ntxub ntxaug ntawm kev ua txhaum luv luv hauv lub zog hloov hluav taws xob. Cov tsos mob tseem ceeb ntawm qhov tsis ua haujlwm luv luv hauv lub zog hloov hluav taws xob yog cov cua sov hnyav thiab cov khoom siv hluav taws xob tsis zoo ntawm cov khoom siv thib ob. Feem ntau, qhov ntau inter tig luv luv-circuit ntsiab lus nyob rau hauv lub coil, lub luv luv-circuit tam sim no ntau dua, thiab cov cua kub ntawm transformer loj dua. Txoj kev yooj yim rau kev 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). Transformers nrog short-circuit faults yuav tsis muaj load tam sim no tus nqi ntau dua 10 feem pua ntawm tag nrho cov load tam sim no. Thaum lub luv luv Circuit Court yog hnyav, lub transformer yuav sai sai cua sov nyob rau hauv ob peb vib nas this tom qab tsis muaj-load hwj chim rau, thiab kov cov tub ntxhais hlau nrog koj txhais tes yuav hnov kub. Lub sijhawm no, nws tuaj yeem xaus lus tias muaj qhov luv luv-circuit point hauv transformer yam tsis ntsuas qhov tsis muaj load tam sim no.
