Clamp meter kuaj lub cev muaj zog thiab lub cev muaj zog tswj Circuit Court
Ib qho ntawm qhov nyuaj tshaj plaws rau kev ntsuas tam sim no yog lub txee tswj, tshwj xeeb tshaj yog thaum nws siv IEC yam khoom. Hom IEC cov khoom tsim los ntawm cov teb chaws Europe muaj ntau qhov sib npaug piv rau cov khoom sib txuas NEMA, thiab cov xaim yuav raug kaw nruj heev. Fluke 330 series clamp tsav kiv cua thiab twj tso kua mis. Lub cev muaj zog tuaj yeem tswj tau los ntawm lub tshuab hluav taws xob hluav taws xob lossis lub tshuab hluav taws xob hloov pauv ceev. Cov tsav tsheb sib txawv tau nce zuj zus vim tias lawv tuaj yeem txuag tau ntau lub zog.
Nws yog ib qho zoo tagnrho clamp hom rooj rau ntsuas cov nram qab no motors thiab tsav tsheb:
Load loj: Qhov nqus tam sim no ntawm lub cev muaj zog ntsuas los ntawm qhov nruab nrab ntawm peb theem yuav tsum tsis txhob tshaj qhov ntsuas tam sim no ntawm lub cev muaj zog. Lub conical clamp thiab backlighting muaj nuj nqi ntawm lub rated nqi rooj yog heev haum rau qhov kev ntsuas no. Multiply los ntawm kev tso cai overload coefficient '
Ntawm qhov tod tes, lub cev muaj zog nrog lub load tam sim no qis dua 60 feem pua ntawm tag nrho cov load tam sim no (feem ntau yog) muaj kev ua haujlwm qis dua thiab qis zog.
Kev tshuav nyiaj li cas tam sim no: qhov tsis txaus ntseeg tam sim no yuav qhia tau tias muaj teeb meem nrog lub cev muaj zog winding (piv txwv li, qhov sib txawv ntawm qhov sib txawv yog tsim los ntawm lub tshav pob winding vim yog ib qho luv luv Circuit Court (feem ntau, qhov imbalance yuav tsum tsawg dua 10 feem pua). ua ntej xam tus nqi nruab nrab ntawm peb-theem nyeem ntawv; tom qab ntawd nrhiav qhov siab tshaj qhov sib txawv ntawm qhov nruab nrab tus nqi thiab faib nws los ntawm tus nqi nruab nrab.) Thaum tsis muaj tam sim no nyob rau hauv ib theem ntawm peb theem, qhov tsis txaus siab tam sim no yog ib qho. -phase imbalance Qhov no feem ntau yog tshwm sim los ntawm kev sib txuas ntawm fuse.
Impulse tam sim no: Lub cev muaj zog uas tau ncaj qha los ntawm lub tshuab hluav taws xob thiab pib (los ntawm lub tshuab hluav taws xob) muaj qhov tam sim no impulse (uas tuaj yeem ncav cuag li 500 feem pua ntawm cov motors laus thiab txog li 1200 feem pua ntawm lub zog txuag motors). Yog hais tias lub impulse tam sim no siab dhau lawm, nws feem ntau ua rau voltage poob thiab annoying tripping. Qhov "impulse tam sim no" muaj nuj nqi ntawm Fluke 337 clamp type meter yog ib qho tshwj xeeb uas tsim los ua rau thiab ntes nws tus nqi tseeb ntawm qhov tam sim no.
Peak load (shock load): Qee lub cev muaj zog tuaj yeem tiv taus kev poob siab, uas tuaj yeem ua rau muaj kev txaus siab tam sim no mus rau lub voj voog dhau ntawm lub cev muaj zog.
Xav txog kev ntsib ib lub saw hlau tawv tawv thaum ua haujlwm. Qhov tsawg kawg nkaus / qhov siab tshaj plaws tuaj yeem siv los sau cov ntaub ntawv tsis zoo tam sim no absorbed los ntawm kev cuam tshuam.
Txawm hais tias nyob hauv tsev lossis chaw lag luam, clamp watches yog ib qho khoom siv tsis tau rau cov neeg siv hluav taws xob.
