Yuav ua li cas yuav tsum tau qhov kev tiv thaiv ntawm stator winding ntawm peb-theem asynchronous lub cev muaj zog yuav suav hais tias ib txwm nyob ntawm lub peev xwm?(Raws li kev siv tus choj thiab suav cov kev tiv thaiv raws li txoj kab uas hla, nws yog qhov tsis muaj tseeb.) Rau cov motors qis dua 10KW, lub multimeter tsuas ntsuas ob peb ohms. Rau 55KW, lub multimeter qhia ob peb feem kaum. Tsis quav ntsej qhov inductive reactance rau tam sim no. Rau 3kw lub hnub qub-txuas lub cev muaj zog, lub multimeter ntsuas qhov winding tsis kam ntawm txhua theem kom nyob ib ncig ntawm 5 ohms (raws li lub npe ntawm lub cev muaj zog, tam sim no: 5.5A. Fais Fab = 0.8. Nws tuaj yeem suav tias Z = 40 ohms, R = 32 ohms). Qhov txawv ntawm ob qho tib si kuj loj heev.

Los ntawm kev pib lub cev muaj zog mus rau theem pib ntawm kev ua haujlwm puv, lub cev muaj zog khiav rau lub sijhawm luv luv thiab qhov kub tsis siab. Tom qab khiav rau 1 teev, qhov kub ib txwm nce mus rau ib qho twg, lub cev muaj zog puas yuav poob ntau tom qab ib teev?Thaj tsis!Ntawm no, kuv vam tias cov phooj ywg uas paub txog hluav taws xob tuaj yeem qhia koj li cas ntsuas nws. Cov phooj ywg uas tseem tsis meej pem thaum kho lub cev muaj zog tuaj yeem qhia koj nkag siab li cas?

Ntxiv ib daim duab kom pom:

Qhov tsis kam ntawm peb-theem winding ntawm lub cev muaj zog yog ntsuas raws li hauv qab no:

1. Untie qhov txuas ntawm lub cev muaj zog terminals.

2. Siv qhov kev ua haujlwm qis ntawm lub tshuab digital multimeter los ntsuas qhov tsis kam ntawm qhov pib thiab qhov kawg ntawm peb windings ntawm lub cev muaj zog. Raws li ib txwm muaj, qhov kev tawm tsam ntawm peb lub windings yuav tsum sib npaug.Yog tias muaj qhov yuam kev, qhov yuam kev tsis tuaj yeem siab dua 5%.

3. Yog hais tias lub cev muaj zog winding tsis kam yog ntau dua 1 ohm, nws tuaj yeem ntsuas nrog ib tus choj ib leeg. Yog tias lub cev muaj zog winding tsis kam tsawg dua 1 ohm, nws tuaj yeem ntsuas nrog ob sab caj npab.

Yog tias muaj qhov sib txawv loj hauv kev tiv thaiv ntawm lub cev muaj zog windings, nws txhais tau hais tias lub cev muaj zog windings muaj luv luv circuits, qhib circuits, vuam tsis zoo thiab ua yuam kev ntawm cov winding lem.

4. Lub rwb thaiv tsev ntawm windings thiab rwb thaiv tsev tsis kam ntawm windings thiab shells tuaj yeem ntsuas los ntawm:

1) Lub cev muaj zog 380V ntsuas nrog lub megohmmeter nrog kev ntsuas ntau ntawm 0-500 megohms lossis 0-1000 megohms.Nws cov rwb thaiv tsev tsis tuaj yeem tsawg dua 0.5 megohms.

2) Siv lub megohmmeter nrog kev ntsuas ntau ntawm 0-2000 megohms los ntsuas lub siab-voltage motor.Nws cov rwb thaiv tsev tsis tuaj yeem qis dua 10-20 megohms.

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Post lub sij hawm: Oct-15-2023