Kev daws teeb meem ntawm Peb -Phase Asynchronous Motors

Windings yog ib qho tseem ceeb ntawm lub tshuab hluav taws xob. Kev laus, noo noo ingress, overheating, corrosion, intrusion los ntawm cov khoom txawv teb chaws, thiab kev cuam tshuam los ntawm sab nraud quab yuam tuaj yeem ua rau muaj kev puas tsuaj rau cov windings. Tsis tas li ntawd, lub cev muaj zog overload, undervoltage, overvoltage, thiab kev ua haujlwm nyob rau hauv ib theem - poob qhov xwm txheej kuj tuaj yeem ua rau muaj qhov tsis raug. Winding faults feem ntau categorized ua plaub hom: grounding faults, short circuits, open circuits, thiab wiring yuam kev. Cov ntu hauv qab no piav qhia, dhau los, cov tsos mob, ua rau, thiab kev tshuaj xyuas rau txhua hom kev ua txhaum.

Winding Grounding Faults
Qhov no yog hais txog ib qho xwm txheej uas cov rwb thaiv tsev ntawm lub winding thiab cov tub ntxhais hlau los yog lub cev muaj zog casing tawg, ua rau muaj hluav taws xob txuas rau hauv av.
1. Cov tsos mob txhaum cai
Lub cev muaj zog casing ua nyob (hluav taws xob them); tswj circuits yuav poob functionality; thiab winding yuav overheat vim luv luv -circuit tam sim no, ua rau lub cev muaj zog tsis muaj peev xwm ua haujlwm li qub.
2. Ua rau
Moisture ingress mus rau hauv lub windings, ua rau txo cov rwb thaiv tsev tsis kam; Lub sijhawm ua haujlwm ntawm lub cev muaj zog nyob rau hauv cov xwm txheej overload; corrosion tshwm sim los ntawm raug cov pa phem; intrusion ntawm hlau txawv teb chaws cov khoom mus rau hauv lub windings, ua puas lub rwb thaiv tsev; kev puas tsuaj rau rwb thaiv tsev thaum lub sij hawm stator rewinding, ua rau kev sib cuag nrog cov tub ntxhais hlau; kev sib cuag ntawm winding kawg lem thiab kawg npog los yog lub cev muaj zog ncej; hlawv ntawm rwb thaiv tsev los ntawm kev sib txhuam ntawm stator thiab rotor; kev puas tsuaj rau cov rwb thaiv tsev ntawm cov hlau lead, ua rau lawv hu rau lub cev muaj zog; los yog rwb thaiv tsev puas tshwm sim los ntawm overvoltage txheej xwm (xws li xob laim ntaus).
3. Cov txheej txheem tshuaj xyuas
(1) Txoj Kev Tshawb Pom Pom Pom: Pom pom qhov kawg ntawm lub voj voog tig thiab cov khoom siv rwb thaiv tsev nyob rau hauv stator slots rau tej yam tshwm sim ntawm lub cev puas tsuaj los yog scorching. Yog tias muaj cov paib zoo li no, qhov chaw qhia tias qhov chaw ua txhaum hauv av.
(2) Multimeter Method: Siv multimeter teem rau qis -kuj ntau yam los ua ib qho kev kuaj xyuas. Yog tias qhov kev nyeem ntawv tsawg heev (zero zero), nws qhia tau hais tias kev ua txhaum hauv av.
(3) Megohmmeter Method: Xaiv ib qho megohmmeter tsim nyog raws li lub tshuab hluav taws xob hauv chav kawm los ntsuas qhov rwb thaiv tsev ntawm txhua theem winding. Yog tias qhov kev nyeem ntawv yog xoom, nws qhia tau hais tias qhov tshwj xeeb winding theem yog grounded. Txawm li cas los xij, nyob rau hauv cov ntaub ntawv uas lub cev muaj zog rwb thaiv tsev tsuas yog ntub los yog tau raug kev puas tsuaj ib nrab vim muaj qhov xwm txheej, kev txiav txim yuav xav tau kev paub; Feem ntau, yog hais tias tus 'meter' pointer fluctuates unstably nyob ib ncig ntawm lub "0" cim, nws qhia tau hais tias lub winding tseem tuav ib tug tej yam℃ntawm kuj.
(4) Test Lamp Method: Yog hais tias lub teeb sim teeb, nws qhia tau hais tias lub winding yog grounded. Yog tias pom cov nplaim taws lossis cov pa luam yeeb tau pom ntawm ib qho chaw tshwj xeeb, qhov taw tes qhia tau qhov tseeb qhov chaw ntawm qhov chaw winding grounding txhaum. Yog hais tias lub teeb ci ntsa iab, nws qhia tias ib feem ntawm cov rwb thaiv tsev rau hauv av. Yog hais tias lub teeb tsis teeb, tseem muaj sparks tshwm sim thaum qhov kev ntsuam xyuas kov lub cev muaj zog casing (hauv av), nws qhia tau hais tias winding rwb thaiv tsev tseem tsis tau raug kev puas tsuaj tag nrho, tab sis tsuas yog ntub dej heev. Xwb, ib daim ntawm cov ntoo tawv tawv tuaj yeem siv los maj mam kais raws rabbet ntug ntawm lub cev muaj zog; Thaum tapping ib qho chaw tshwj xeeb ua rau qhov taw qhia lub teeb flicker- hloov ntawm off thiab on- nws qhia tau hais tias tam sim no yog intermittently ua thiab rhuav kev sib cuag, yog li pinpointing qhov tseeb qhov chaw ntawm av txhaum.
⑸ Tam sim no Hlawv-tawm txoj kev: Siv qhov sib txawv -voltage transformer txuas nrog lub zog hluav taws xob. Qhov taw tes hauv av yuav kub sai sai; qhov chaw uas cov pa luam yeeb pib los ntawm cov rwb thaiv tsev yog qhov chaw ntawm qhov txhaum. Kev ceev faj tshwj xeeb yuav tsum tau siv nrog cov motors me: qhov tam sim no yuav tsum tsis pub tshaj ob zaug ntawm qhov ntsuas tam sim no, thiab lub sijhawm ntawm qhov ntsuas yuav tsum tsis pub tshaj 30 vib nas this. Rau cov motors loj, qhov tam sim no yuav tsum tau teem rau 20%–50% ntawm cov ntsuas tam sim no-los yog maj mam nce-kom txog thaum cov pa luam yeeb tsuas yog pib tshwm ntawm qhov txhaum, lub sijhawm ntawd lub hwj chim yuav tsum raug txiav tam sim ntawd.
⑹ Txoj Kev Tshem Tawm Pab Pawg: Txoj kev no yog ua haujlwm thaum lub hauv av txhaum nyob rau hauv qhov tob hauv cov tub ntxhais hlau thiab muaj kev kub nyhiab heev, xws li cov tooj liab uas puas lawm tau fused ua ke nrog cov tub ntxhais. Cov txheej txheem suav nrog faib cov theem hauv av winding rau hauv ob halves; cov txheej txheem ntawm subdivision no yog rov ua dua mus txog rau thaum qhov chaw tshwj xeeb ntawm qhov txhaum hauv av raug cais tawm.
Tsis tas li ntawd, lwm yam kev kuaj mob muaj nyob -xws li kev ntsuas siab -voltage test method, magnetic needle detection, and power-frequency vibration analysis-tab sis cov no yuav tsis qhia meej ib leeg ntawm no.
4. Kev kho mob
⑴ Yog hais tias qhov av txhaum yog tshwm sim los ntawm noo noo nkag mus rau hauv lub windings, lub windings yuav tsum tau ua ntej kom qhuav. Thaum lawv tau txias rau kwv yees li 60-70 degree, siv lub tsho tiv no ntawm cov kua roj vanish, thiab tom qab ntawd muab lawv mus rau lub voj voog thib ob.
⑵ Yog hais tias lub rwb thaiv tsev ntawm lub winding xaus puas lawm, qhov chaw cuam tshuam ntawm qhov chaw txhaum hauv av yuav tsum tau rov ua dua- insulated, coated nrog cov kua roj vanish, thiab ces qhuav.
⑶ Yog tias qhov ua txhaum hauv av nyob rau hauv cov qhov winding, tag nrho cov winding yuav tsum tau rewound, los yog cov khoom puas winding yuav tsum tau hloov.
Thaum kawg, siv megohmmeters tsim nyog los ntsuas kev ntsuas kom ntseeg tau tias cov windings ua tau raws li txhua qhov kev qhia tshwj xeeb.

Winding Short Circuits
Cov luv luv hauv lub cev muaj zog windings feem ntau yog tshwm sim los ntawm kev puas tsuaj los ntawm lub cev muaj zog ntau dhau, kev hloov pauv loj hauv cov khoom siv hluav taws xob, ib zaug - haujlwm ua haujlwm, kev puas tsuaj, lossis kev tsim khoom tsis raug. Cov faults no tau muab faib ua inter-tig luv circuits (hauv ib lub kauj), inter-coil short circuits (nruab nrab ntawm cov coils nyob ib sab), inter-pole short circuits, thiab inter-phase short circuits.
1. Cov tsos mob txhaum cai
Kev faib tawm ntawm cov hlau nplaum sib nqus ua tsis sib xws, thiab peb -theem tam sim no tsis sib npaug, ua rau muaj kev vibration thiab suab nrov thaum lub sijhawm ua haujlwm ntawm lub cev muaj zog. Nyob rau hauv cov xwm txheej hnyav, lub cev muaj zog yuav tsis pib tag nrho. Tsis tas li ntawd, ib qho luv luv -circuit tam sim no yog tsim nyob rau hauv cov coil cuam tshuam, ua rau nws kub thiab hlawv sai heev. 2. Ua rau
Lub cev muaj zog ntev dhau los ua rau muaj kev tiv thaiv kev laus thiab poob ntawm cov khoom insulating; rwb thaiv tsev puas tshwm sim thaum lub sij hawm coil insertion txheej txheem; noo noo nkag mus rau hauv lub windings txo cov rwb thaiv tsev tsis kam, ua rau rwb thaiv tsev tawg; kawg -tig thiab inter- cov ntaub ntawv rwb thaiv tsev txheej yog qhov chaw tsis raug lossis puas thaum lub sij hawm coil shaping txheej txheem; rwb thaiv tsev ntawm qhov kawg -tig kev sib txuas ua kom puas; overvoltage los yog xob laim ntaus ua rau rwb thaiv tsev tawg; kev sib txhuam ntawm lub rotor thiab stator winding kawg - tig ua rau rwb thaiv tsev puas; los yog cov khoom hlau txawv teb chaws poob rau hauv lub cev muaj zog sab hauv, lossis cov roj ntau dhau / roj tsub zuj zuj tshwm sim.
3. Cov txheej txheem tshuaj xyuas
⑴ Kev tshuaj xyuas qhov muag: Saib xyuas lub thawv davhlau ya nyob twg thiab qhov kawg winding - tig rau txhua qhov cim ntawm scorching; overheating ntawm windings feem ntau tawm cov xim av tsaus nti thiab ua rau muaj ntxhiab tsw.
⑵ Temperature Sensing: Khiav lub cev muaj zog nyob rau hauv tsis muaj - load tej yam kev mob rau 20 feeb (tam sim ntawd nres yog tias muaj tej yam txawv txav), ces siv lub nraub qaum ntawm koj txhais tes los kov ntau qhov chaw ntawm lub windings los xyuas seb lawv qhov kub thiab txias tshaj li ib txwm txwv.
⑶ Energized Test: Siv lub ammeter los ntsuas qhov tam sim no hauv txhua theem; Yog hais tias qhov tam sim no nyob rau hauv ib theem tshwj xeeb yog siab heev, nws qhia ib tug luv luv Circuit Court nyob rau hauv lub theem.
⑷ Choj Ntsuas: Ntsuas qhov DC tsis kam ntawm txhua qhov winding; Feem ntau, qhov sib txawv ntawm cov theem yuav tsum tsis pub tshaj 5%. Yog tias nws ua li ntawd, theem nrog qis kuj yuav muaj luv luv - Circuit Court txhaum.
⑸ Luv-Circuit Detector Method: Muab ib daim hlau nyob ze ntawm qhov cua hauv qhov kev sim; Yog hais tias ib tug luv luv Circuit Court nyob rau hauv lub winding, lub steel sawb yuav co.
⑹ Multimeter los yog Megohmmeter Method: Ntsuas cov rwb thaiv tsev tiv thaiv ntawm ob theem windings; Yog tias qhov kev nyeem ntawv tsawg heev lossis xoom, nws qhia tau hais tias luv luv ntawm ob theem.
⑺ Voltage Drop Method: Txuas peb lub windings hauv series thiab siv qhov chaw nyab xeeb, qis -voltage AC fais fab mov; qhov winding nrog qhov ntsuas qhov ntsuas qis tshaj qhov poob qis qhia tias muaj qhov luv luv - Circuit Court txhaum.
⑻ Txoj kev sib piv tam sim no: Khiav lub cev muaj zog nyob rau hauv tsis muaj - thauj khoom. Ua ntej, ntsuas qhov tam sim no hauv tag nrho peb theem. Tom qab ntawd, sib pauv cov kev sib txuas ntawm ob theem, ntsuas cov tam sim no dua, thiab sib piv cov txiaj ntsig. Yog tias qhov kev nyeem ntawv tam sim no tsis hloov pauv hauv kev sib txuas lus nrog rau theem sib pauv, qhov winding nrog qhov siab dua tam sim no yuav muaj qhov luv luv.
4. luv-Txoj kev kho Circuit Court
⑴ luv luv Circuit Court nyob rau thaum kawg - tig: luv luv -circuit point yuav raug rho tawm siv cov ntaub ntawv insulating, los yog cov rwb thaiv tsev ntawm cov xaim cuam tshuam tuaj yeem rov ua dua- qhwv, ua raws li varnishing thiab re- ci.
⑵ Short circuit nyob rau hauv lub stator slots: soften lub rwb thaiv tsev kom nkag mus rau qhov txhaum, nrhiav thiab kho qhov luv luv -circuit point, ces re- ntxig rau winding rau hauv lub qhov, ua raws li los ntawm varnishing thiab ci. ⑶ Rau txhua theem winding nrog tsawg dua 1/12 ntawm nws cov lem koom nrog hauv luv luv Circuit Court, txhua qhov luv luv yuav tsum tau txiav; cov seem conductive seem yog txuas mus rau lub voj kaw, cia lub cev muaj zog siv thaum muaj xwm txheej ceev.
⑷ Yog hais tias tus naj npawb ntawm lem koom rau hauv lub voj voog luv luv tshaj 1/12, tag nrho cov winding yuav tsum tau muab tshem tawm thiab rov ua dua.

Winding Qhib Circuits
Tsis zoo soldering-los yog siv cov corrosive flux uas tsis huv huv si tom qab soldering- tuaj yeem ua rau "cov pob qij txha txias" lossis kev sib txuas xoob. Tsis tas li ntawd, txhua yam kev ntxhov siab lossis kev cuam tshuam lub cev tuaj yeem ua rau cov coils puas; Ib yam li ntawd, inter-tig luv luv Circuit Court lossis hauv av txhaum tuaj yeem ua rau cov conductors hlawv. Thaum ib los yog ntau dua conductors nyob rau hauv ib lub nras ntawm parallel - txuas xov hlau luv luv -circuit, cov seem conductors muaj qhov kub thiab txias vim muaj zog tam sim no, ua rau overheating ntawm winding thiab, thaum kawg, qhib Circuit Court. Qhib- Circuit Court faults feem ntau categorized rau hauv: qhib kev sib txuas ntawm winding kawg ntawm ib theem tshwj xeeb; qhib circuits nyob rau hauv parallel ceg; qhib circuits nyob rau hauv ib qho ntawm ob peb parallel - txuas conductors; thiab tawg rotor tuav (qhuav tawb).
1. Cov tsos mob txhaum cai
Lub cev muaj zog tsis pib; peb -theem tam sim no tsis sib npaug; muaj suab nrov txawv txav lossis kev co ntau dhau; qhov kub nce siab tshaj qhov tso cai; los yog pa luam yeeb tawm.
2. Ua rau
⑴ Kev puas tsuaj tshwm sim thaum kuaj xyuas, kho, lossis kho cov txheej txheem; Lwm qhov, cov teeb meem ntsig txog kev tsim khoom zoo.
⑵ Tsis zoo soldering ntawm cov ntsiab lus sib txuas-xws li nruab nrab ntawm ib tus neeg winding ntsiab, ncej (los yog theem) pawg, los yog winding leads -ua rau solder detachment tshwm sim los ntawm lub sij hawm ntev overheating thaum lub sij hawm ua hauj lwm.
⑶ Kev puas tsuaj rau lub cev lossis kev tawg ntawm cov cua ntsawj ntshab tshwm sim los ntawm cov khoom siv hluav taws xob lossis hluav taws xob.
⑷ Kev kub ceev los yog melting ntawm lub winding tshwm sim los ntawm inter-tig luv circuits, inter-theem luv circuits, los yog av txhaum.
3. Cov txheej txheem tshuaj xyuas
⑴ Visual Inspection Method: Qhib circuits feem ntau tshwm sim ntawm qhov xaus winding; visually soj ntsuam rau tej yam tshwm sim ntawm lub cev tawg los yog detached solder pob qij txha.
⑵ Multimeter Method: Siv qhov kev tiv thaiv ntau yam ntawm ib qho multimeter: rau "Y" (lub hnub qub) txuas windings, tso ib qho kev sojntsuam rau ntawm qhov nruab nrab (center) ntawm "Y" configuration thiab kov lwm qhov kev sojntsuam mus rau qhov pib kawg ntawm peb theem windings; cov theem uas sau npe infinite kuj qhia tias qhib Circuit Court. Rau "△" (delta) txuas windings, disconnect delta kev sib txuas, ces ntsuas qhov tsis kam ntawm txhua tus neeg theem winding; lub winding uas sau npe infinite kuj yog ib qho nrog qhib Circuit Court.
⑶ Test Teeb Method: Cov txheej txheem zoo tib yam rau txoj kev multimeter, tab sis siv lub teeb sim hloov; theem uas lub teeb tsis pom kev qhia tias qhib Circuit Court. ⑷ Megohmmeter Method: Cov theem nthuav tawm qhov kev tiv thaiv tus nqi nce mus rau infinity (ie, tsis yog qhov kawg, tsis yog -xoom tus nqi) qhia qhov chaw ntawm qhov qhib Circuit Court.
⑸ Ammeter Method: Thaum lub cev muaj zog khiav, siv lub ammeter los ntsuas peb -theem tam sim no. Yog tias peb -theem tam sim no tsis sib npaug thiab tsis muaj luv luv- Circuit Court raug kuaj pom, qhov winding nyob rau theem nrog qhov qis tshaj tam sim no yuav raug kev txom nyem los ntawm ib feem qhib - Circuit Court txhaum.
⑹ Txoj Kev Choj: Thaum qhov kev tawm tsam ntawm ib theem ntawm lub cev muaj zog ntau dua li ntawm ob theem, nws qhia tau hais tias lub winding nyob rau theem tshwj xeeb muaj ib feem qhib - Circuit Court txhaum.
⑺ Txoj Kev Ntsuas Tam Sim No: Rau "Y" - txuas windings, txuas peb theem ua ke thiab siv qhov tsawg-voltage, siab - tam sim no AC mov. Yog tias qhov sib txawv tam sim no ntawm peb qhov windings tshaj 10%, theem nrog qhov qis tshaj tam sim no qhia txog qhov qhib Circuit Court. Rau "△"- txuas windings, ua ntej txiav ib qho ntawm cov stator winding terminals; tom qab ntawd, siv qhov tsawg-voltage, siab- cov khoom tam sim no rau txhua theem ntawm tus kheej. Cov theem nthuav tawm qhov qis tshaj tam sim no qhia txog qhov qhib Circuit Court.
⑻ Txhaum-Bar Detector Method: Thaum lub sijhawm tshuaj xyuas, yog tias lub rotor muaj qhov tawg (qhib tawb), kev nyeem ntawv ntawm millivoltmeter yuav tsum txo qis.
4. Qhib-Cov txheej txheem kho Circuit Court
⑴ Yog hais tias qhov qhib Circuit Court nyob rau ntawm winding kawg (kawg lem), reconnect lub tawg xaus, solder lawv ruaj ntseg, qhwv lawv nrog insulating cov ntaub ntawv, npog lawv nrog insulating tubing, khi lawv ruaj khov, thiab thaum kawg, ci lub winding kom qhuav nws.
⑵ Yog hais tias lub winding tau kub hnyiab heev-vim inter-tig luv circuits, inter-theem luv circuits, hauv av faults, los yog zoo sib xws ua rau- feem ntau winding yuav tsum tau hloov nrog ib tug tshiab.
⑶ Rau qhov qhib circuits nyob rau hauv lub stator slots (slots) -muab tsuas muaj ob peb yam xws li so - kho thaum muaj xwm ceev yuav ua tau. Siv txoj kev "kev tshem tawm pab pawg" los txheeb xyuas qhov tseeb ntawm qhov chaw so; ib zaug pom, rov txuas qhov tawg kawg thiab xyuas kom lub rwb thaiv tsev ua tau raws li cov qauv kev nyab xeeb ua ntej xa rov qab lub cev rau kev pabcuam.
⑷ Rau cov kab rotor tawg hauv squirrel- tawb rotors, kho tuaj yeem cuam tshuam nrog kev siv vuam, txias - koom, lossis bar- hloov txoj kev.

Kev sib txuas Winding tsis raug
Kev sib txuas winding tsis raug ua rau muaj qhov ua tsis tiav lossis cuam tshuam qhov sib nqus sib nqus, ua rau cov tsos mob xws li pib nyuaj, tsis sib npaug peb - theem tam sim no, thiab suab nrov dhau. Hauv qhov xwm txheej hnyav, yog tias tsis kho tam sim ntawd, cov kev ua txhaum no tuaj yeem ua rau cov cua kub kub tawm. Cov xwm txheej tseem ceeb suav nrog cov hauv qab no: ib lossis ntau lub coils hauv ib tus ncej tshwj xeeb (lossis theem) tau muab tso rau hauv qhov thim rov qab lossis muaj lawv qhov pib thiab qhov kawg terminals txuas tsis raug; ib pawg ncej (los yog theem) txuas nrog rov qab; tag nrho cov theem winding txuas nrog rov qab; ceg nyob rau hauv ib tug multi- parallel winding circuits yog misconnected; los yog "Delta" (△) thiab "Wye" (Y) kev sib txuas teeb tsa tsis raug.
1. Cov tsos mob txhaum cai
Lub cev muaj zog tsis pib; qhov tsis muaj -load tam sim no ntau dhau los yog hnyav heev tsis sib npaug; qhov kub nce siab heev; lub cev muaj zog ua rau muaj kev vibration hnyav nrog lub suab nrov; los yog fuses tshuab tawm.
2. Ua rau
Qhov kev npaj "Delta" (△) kev sib txuas tau yuam kev xaim raws li "Wye" (Y) kev sib txuas; thaum lub sij hawm tu lossis kho, qhov pib thiab qhov kawg terminals ntawm ib qho ntawm peb -theem windings tau thim rov qab; thaum lub sij hawm txo -voltage pib, kais txoj hauj lwm raug xaiv tsis tsim nyog, los yog muaj teeb meem nyob rau hauv cov xov tooj; rau cov motors tshiab, yuam kev tau ua nyob rau hauv kev sib txuas winding thaum lub sij hawm winding installation txheej txheem; los yog rau cov laus motors, kev txheeb xyuas ntawm winding lead terminals (pib / kawg) yog tsis raug.
3. Cov txheej txheem tshuaj xyuas
⑴ Pob Bearing Method: Yog hais tias lub pob bearing muab tso rau hauv lub stator rotates thiab yob nyob rau hauv lub puab ncig ntawm lub stator core, nws qhia tau hais tias cov winding kev twb kev txuas yog lawm; txwv tsis pub, muaj ib qho kev sib txuas winding yuam kev.
⑵ Compass Method: Yog hais tias cov windings tau txuas mus kom raug, lub compass txav raws ib theem winding yuav tsum qhia alternating polarities (sab qaum teb thiab sab qab teb) raws li nws hla dhau cov ncej (los yog theem) pawg. Ib yam li ntawd, nyob rau hauv peb-theem winding, cov ncej uas nyob ib sab (los yog theem) pawg koom nrog * txawv * theem yuav tsum muaj qhov sib txawv polarities. Yog tias qhov kev taw qhia polarity tseem tsis hloov pauv, nws qhia tau tias ib pawg ncej tshwj xeeb (lossis theem) tau txuas nrog rov qab. Yog hais tias lub compass koob cov ntsiab lus erratically los yog tsis ruaj tsis khov, nws qhia tau hais tias ib tug los yog ntau tshaj ib tug neeg coils nyob rau hauv lub tshwj xeeb theem pab pawg neeg tau txuas nyob rau hauv rov qab.
⑶ Multimeter Voltage Method: Los ntawm kev ua raws li daim duab thaiv, yog tias lub voltmeter yields tsis nyeem ntawv thaum lub sij hawm ob qhov kev ntsuas sib cais -los yog nws yields ib tug nyeem ntawv nyob rau hauv ib qho kev ntsuas tab sis tsis yog lwm yam - nws qhia tau hais tias muaj ib tug winding kev twb kev txuas yuam kev.
⑷ Lwm txoj hauv kev: Cov no suav nrog kev qhuav- xovtooj ntawm tes roj teeb txoj kev, milliammeter residual magnetism txoj kev, thiab lub cev muaj zog rotation txoj kev.
4. Kev kho mob
⑴ Yog hais tias ib co coil los yog coil pab pawg yog txuas nyob rau hauv rov qab, uas ua rau ib tug tseem ceeb unbalance nyob rau hauv lub tsis muaj -load tam sim no, lub cev muaj zog yuav tsum tau rov qab mus rau ib tug tshwj xeeb kho qhov chaw rau rework.
⑵ Yog hais tias lub winding lead terminals raug misidentified, lub pib thiab xaus terminals yuav tsum raug txheeb xyuas kom raug thiab cov kev sib txuas re-tsim raws li.
⑶ Yog tias muaj teeb meem tshwm sim thaum lub xov hluav taws xob txo qis -voltage pib, cov kev sib txuas yuav tsum tau ua tib zoo hla- kuaj xyuas cov kab kos los yog schematic thiab rewired kom raug.
⑷ Yog hais tias qhov teeb meem tsis sib haum xeeb tshwm sim thaum lub sij hawm pib winding installation ntawm lub cev muaj zog tshiab, los yog tom qab ua tiav rewinding ntawm lub qub lub cev muaj zog, lub tsev yuav tsum tau xa rov qab mus rau lub chaw tsim tshuaj paus los yog ib tug tshwj xeeb kho qhov chaw rau rework. ⑸ Yog tias ib theem ntawm stator winding txuas nrog rov qab, qhov tam sim no nyob rau theem tshwj xeeb yuav siab heev; Cov yam ntxwv no tuaj yeem siv los kuaj xyuas qhov txhaum thiab ua haujlwm kho.
⑹ Yog hais tias lub winding txuas nyob rau hauv "Delta" (△) configuration es tsis txhob ntawm lub npaj "Wye" (Y) configuration, los yog yog hais tias tus naj npawb ntawm lem tsis txaus, qhov tsis muaj -load tam sim no yuav ntau dhau; tus mob no yuav tsum tau kho tam sim ntawd. Yuav ua li cas txheeb xyuas cov hlau lead uas sib raug zoo ntawm rau qhov tso zis tawm ntawm peb -theem asynchronous lub cev muaj zog: siv lub roj teeb ntawm tes qhuav thiab multimeter los txiav txim siab.