Lub zog ntawm atransformertsis yog tus qauv parameter feem ntau siv los piav txog qhov ua tau zoo lossis qhov xwm txheej ntawm transformer. Thaum peb tham txog lub hwj chim, peb feem ntau yog xa mus rau lub hwj chim ntawm lub load nyob rau hauv lub hwj chim system, uas yog tus piv ntawm active hwj chim rau pom lub hwj chim, feem ntau qhia raws li cosφ.
Lub ntsiab tsis zoo ntawm transformer feem ntau muaj xws li:
1. rated voltage: tus nqi voltage ntawm thawj (input) thiab theem nrab (tso zis) thaum lub transformer nyob rau hauv ib txwm ua hauj lwm.
2. rated tam sim no: tus nqi ntawm cov tam sim no uas muaj kev ruaj ntseg nqa los ntawm lub transformer nyob rau hauv lub rated voltage. 3. rated muaj peev xwm: tus nqi ntawm tam sim no uas muaj kev nyab xeeb nqa los ntawm lub transformer nyob rau hauv lub rated voltage.
3. Rated peev: tus nqi ntawm lub zog pom tseeb uas lub tshuab hloov pauv tuaj yeem xa tawm ntawm qhov ntsuas hluav taws xob thiab ntsuas tam sim no, feem ntau hauv kVA lossis MVA.
4. Efficiency: ib qho kev ntsuas ntawm kev hloov pauv kev ua haujlwm ntawm lub tshuab hloov pauv hauv kev hloov hluav taws xob hluav taws xob los ntawm qhov pib mus rau theem nrab.
5. short-circuit impedance: qhia txog impedance ntawm transformer nyob rau hauv cov kev tshwm sim ntawm ib tug luv luv-circuit nyob rau hauv thawj los yog theem nrab, thiab yog ib qho tseem ceeb rau kev tiv thaiv ntawm lub system thiab xaiv cov khoom tsim nyog.
Yog li ntawd, thaum xav txog qhov kev ua tau zoo thiab cov yam ntxwv ntawm lub transformer, peb feem ntau xa mus rau cov lus saum toj no tsis yog lub hwj chim. Tau kawg, lub zog ntawm cov khoom thauj hauv lub zog hluav taws xob tseem ceeb heev rau kev ruaj ntseg thiab kev ua haujlwm ntawm lub zog hluav taws xob, tab sis feem ntau nws muaj feem xyuam rau cov khoom siv hluav taws xob tshwj xeeb (xws li, motors, khoom siv teeb pom kev zoo, thiab lwm yam) thiab tsis ncaj qha rau lub transformer.
Nyob rau hauv dav dav, ** transformers tsis muaj ib tug cais "power factor" parameter ** . Hauv lub zog hluav taws xob, peb feem ntau muaj kev txhawj xeeb txog lub hwj chim ntawm tag nrho cov khoom siv hluav taws xob lossis lub zog hluav taws xob, tsis yog lub zog hluav taws xob ntawm tus kheej.
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