Ib rooj plaub ntawm kev ntsuas qhov tsis muaj load tam sim no ntawm peb-theem asynchronous lub cev muaj zog nrog clamp ammeter
Qhov thib ob winding ntawm feedthrough tam sim no transformer ntawm lub clamp ammeter yog qhov txhab ntawm cov tub ntxhais hlau thiab txuas nrog AC ammeter, thiab nws cov thawj winding yog ntsuas cov hlau hla dhau qhov nruab nrab ntawm lub transformer. Lub pob qhov rooj yog qhov kev xaiv ntau yam hloov pauv, thiab qhov ua haujlwm ntawm tus ciaj ntswj yog qhib thiab kaw qhov txav tau ntawm cov tub ntxhais ntawm cov hloov pauv hloov pauv kom nws tuaj yeem clamp cov hlau hauv kev sim.
Thaum ntsuas tam sim no, nias lub ciaj ntswj, qhib lub puab tsaig, thiab muab cov xaim nqa tam sim no nyob rau hauv kev sim nyob nruab nrab ntawm cov khoom noj tam sim no. Ib tug tam sim no yog induced nyob rau hauv sab winding, thiab tam sim no dhau los ntawm lub kauj ntawm lub electromagnetic ammeter, ua rau lub pointer deflect, thiab ntsuas tam sim no tus nqi yog qhia nyob rau hauv dial scale.
Tom qab muab cov xaim nyob rau hauv kev sim rau hauv lub qhov rais los ntawm lub pob tseem ceeb, xyuam xim rau qhov zoo haum ntawm ob sab ntawm lub puab tsaig, thiab tsis txhob cia lwm yam khoom nyob rau hauv nruab nrab;
Qhov tsawg kawg nkaus ntawm qhov ntsuas clamp yog 5A, thiab qhov yuam kev ntawm cov zaub yuav loj dua thaum ntsuas qhov me me tam sim no. Qhov no yog qhov tshwm sim uas tuaj yeem ntsuas tau tom qab winding lub zog hluav taws xob ntawm lub ntsuas hluav taws xob clamp rau ob peb lub lis piam, thiab faib cov txiaj ntsig tau txais los ntawm tus lej ntawm kev tig.
Ib rooj plaub ntawm kev ntsuas qhov tsis muaj load tam sim no ntawm peb-theem asynchronous lub cev muaj zog nrog clamp ammeter
piv 1
Ib qho ore crusher nrog lub cev muaj zog ntawm 15kW. Tom qab lub cev muaj zog overhauled, nws khiav ib txwm tsis muaj load, tab sis nws yuav tsis tau loaded. Thaum lub load ntxiv, lub cev muaj zog yuav mus vim yog overload. Tom qab kev tshuaj xyuas, cov khoom siv tshuab thiab cov khoom siv hluav taws xob zoo li qub. DC tsis kam ntawm lub cev muaj zog kauj yog 2.4Ω, 3.2Ω thiab 2.4Ω feem; Peb-theem tsis muaj load tam sim no ntsuas los ntawm clamp ammeter yog 9A, 5A thiab 8.8A feem. Nws yog tseeb tias lub cev muaj zog coil muaj Fault. Tom qab tshem lub hau kawg ntawm lub cev muaj zog, nws tau pom tias ib qho ntawm cov hlau xaus ntawm ib qho ntawm cov theem windings tau loosened, thiab cov solder tau yaj. Lub cev muaj zog yog ob-wired, ib qho yog disconnected thiab lwm yam tseem txuas nrog, yog li ntawd lub torque yog txo, thiab nws tsuas tig tsis tau load, tab sis nws yuav tsis nqa lub load.
Piv txwv 2
Nws muaj lub cev muaj zog nrog lub zog ntsuas ntawm 13kW. Tom qab lub kauj yog rewound thiab kuaj, qhov ceev ntawm lub cev muaj zog yog ib txwm thaum lub cev muaj zog khiav tsis muaj load. Tom qab lub load yog nyob rau, lub cev muaj zog ceev yog qeeb heev, los yog txawm tsis tig. Qhov ntsuas hluav taws xob ntsuas hluav taws xob thiab qhov tsis kam ntawm txhua theem yog qhov qub, thiab peb-theem tsis muaj kev thauj khoom tam sim no yog qhov sib npaug thaum ntsuas nrog lub ntsuas ntsuas, tab sis cov nqi tam sim no yog tag nrho me me, yog li nws tau txiav txim siab tias qhov sib txuas winding yog. yuam kev. Qhib lub hau kawg, pom tias lub cev muaj zog nrog △ kev sib txuas tsis raug txuas nrog Y kev sib txuas, uas ua rau lub zog khiav ib txwm me me dhau los nqa lub nra, vim tias lub zog ntawm Y kev sib txuas yog ib feem peb ntawm. kev sib txuas △.
Piv txwv 3
Lub tshuab cuab yeej siv lub cev muaj zog 4kW. Tom qab lub hwj chim qhib, lub cev muaj zog tsis tig thiab tsuas yog hums. Tshem tawm cov xaim hluav taws xob, kuaj xyuas tias muaj hluav taws xob ntawm lub zog hluav taws xob, peb theem hluav taws xob kuj zoo li qub, DC tsis kam ntawm cov winding kuj sib npaug, cov rwb thaiv tsev tsim nyog, thiab kev sib hloov tshuab yog hloov tau. Thaum kawg, ntsuas qhov tsis muaj load tam sim no nrog lub clamp ammeter ntawm lub cev muaj zog coj mus rau sab qis ntawm qhov hloov. Yog li ntawd, muaj tam sim no nyob rau hauv ob theem thiab tsis muaj tam sim no nyob rau hauv ib theem. Indicates ib tug faulty hlau nyob rau hauv lub conduit. Rub tawm cov hlau sab hauv ntawm cov yeeb nkab steel, thiab pom tias ib feem ntawm cov hlau tau tawg lawm, sib ntsib ib leeg zoo li ob lub ntsiab lus, thiab muaj cov hmoov dawb oxidized nyob rau hauv qhov kawg ntawm cov hlau. Qhov no yog vim muaj qhov nro ntau dhau thaum hla cov yeeb nkab, cov hlau yog thinned thiab elongated, thiab lub sij hawm ntev energized tam sim no heats thiab oxidizes ntawm qhov chaw zoo li tawg. Lub sijhawm no, qhov hluav taws xob tseem tuaj yeem ntsuas ntawm lub zog hluav taws xob lub taub hau, tab sis tam sim no tsis tuaj yeem hla.
