1. Siv Clamp Meters nyob rau hauv daim ntawv thov nyob
Rau cov neeg siv hluav taws xob hauv tsev, lub ntsuas hluav taws xob yog ib qho tseem ceeb rau kev ntsuas. Thaum lub sijhawm kuaj xyuas qhov tam sim no feem ntau txaus, qee zaum qhov kev kuaj xyuas no tsis muab daim duab tiav vim tias lub load tau qhib thiab tawm, dhau ntau lub voj voog, thiab lwm yam.
Qhov hluav taws xob hauv hluav taws xob yuav tsum ruaj khov, tab sis tam sim no sib txawv. Txhawm rau kuaj xyuas qhov siab tshaj plaws lossis qhov hnyav tshaj plaws ntawm lub voj voog, siv lub ntsuas ntsuas ntsuas nrog min / max muaj nuj nqi tsim los ntsuas cov dej ntws siab uas muaj nyob rau ntev dua 100 ms lossis txog 8 lub voj voog. Cov dej ntws no tuaj yeem ua rau muaj kev cuam tshuam ntau dhau ntawm cov xwm txheej uas tuaj yeem ua rau muaj kev cuam tshuam tsis zoo ntawm Circuit Court breaker.
Lub load ntawm txhua ceg Circuit Court yog ntsuas ntawm lub switchboard Qhov kev ntsuas yog ua nyob rau ntawm lub load sab ntawm ib tug Circuit Court breaker los yog fuse uas yuav qhib lub Circuit Court nyob rau hauv cov kev tshwm sim ntawm ib tug luv luv Circuit Court, uas yog tshwj xeeb tshaj yog ib qho tseem ceeb rau txhua yam ntawm kev sib cuag ncaj qha voltage. Kev ntsuas , txawm tias cov clamps ntawm lub ntsuas ntsuas clamp yog insulated, vim tias muaj kev tiv thaiv qib tsis muaj rau kev ntsuas hluav taws xob ncaj qha, kev saib xyuas yog tsim nyog.
Ib qho teeb meem tshwm sim hauv kev ua haujlwm hluav taws xob hauv cov chaw nyob yog daim phiaj hluav taws xob rau cov hluav taws xob hluav taws xob, thiab cov ntsuas hluav taws xob yog qhov tseem ceeb hauv kev txheeb xyuas qhov hluav taws xob hluav taws xob twg. Ua ntej, coj ib qho piv txwv ntawm kev nyeem ntawv tam sim no ntawm Circuit Court ntawm lub vaj huam sib luag. Tom qab ntawd, muab lub ntsuas ntsuas ntsuas hauv max / max hom. Mus rau lub qhov hluav taws xob cuam tshuam, ntsaws rau hauv lub nra (lub tshuab ziab plaub hau zoo tagnrho), thiab tig nws rau ib feeb lossis ob zaug. Txheeb xyuas tias qhov kev nyeem ntawv siab tshaj plaws ntawm lub ntsuas ntsuas tsis tau hloov pauv, lub tshuab ziab plaub hau feem ntau yuav kos 10-13 A, yog li yuav tsum muaj qhov txawv txav. Yog tias qhov kev nyeem ntawv zoo ib yam, lub Circuit Court breaker tsis raug.
2. Siv clamp meters hauv kev lag luam daim ntaub ntawv
Clamp meters yog siv los ntsuas cov khoom siv hluav taws xob ntawm cov khoom siv thiab cov ceg hluav taws xob ntawm cov keyboards. Yog hais tias muaj ib tug Circuit Court breaker los yog fuse, qhov ntsuas ntawm lub feeder yuav tsum yeej ib txwm ua nyob rau hauv lub load sab ntawm lub Circuit Court breaker los yog fuse (xws li nyob rau hauv ib tug kaw lub cev muaj zog starter).
Qhov sib npaug thiab kev thauj khoom ntawm cov khoom siv cables yuav tsum raug kuaj xyuas: cov dej ntws ntawm tag nrho peb theem yuav tsum yog kwv yees li qub kom txo cov dej ntws rov qab mus rau nruab nrab.
Cov kab nruab nrab kuj yuav tsum tau kuaj xyuas kom dhau. Nrog cov khoom sib haum xeeb, txawm tias cov theem feeder muaj qhov sib npaug, tus neeg nruab nrab nruab nrab tuaj yeem nqa tam sim no ntau dua li cov khoom noj. Txhua ceg Circuit Court yuav tsum tau kuaj xyuas seb puas muaj peev xwm overloading.
Thaum kawg, hauv av loops yuav tsum tau kuaj xyuas. Qhov zoo tshaj plaws, yuav tsum tsis muaj tam sim no hauv av rov qab, txawm tias tsawg dua 300 mA yog qhov qub.
3. Clamp meter los ntsuas cov dej ntws tam sim no
Txhawm rau txheeb xyuas qhov xau tam sim no ntawm cov ceg hluav taws xob, tso cov xov hlau nyob thiab nruab nrab hauv lub puab tsaig ntawm lub ntsuas ntsuas clamp. Txhua qhov ntsuas tam sim no yog qhov xau tam sim no, uas yog, tam sim no rov qab mus rau hauv av rov qab. Cov khoom siv tam sim no (kab dub) thiab rov qab tam sim no (kab dawb) tsim cov teb sib nqus sib nqus. Cov tam sim no yuav tsum sib npaug (thiab rov qab) thiab qhov sib nqus sib nqus yuav tsum thim tawm ib leeg. Yog tias tsis muaj kev tshem tawm, nws txhais tau hais tias qee qhov tam sim no (hu ua cov xau tam sim no) rov qab los ntawm lwm txoj hauv kev, thiab tib txoj kev tsuas yog hauv av rov qab los.
Yog tias koj pom cov net tam sim no ntawm cov khoom siv tam sim no thiab qhov rov qab tam sim no, koj yuav tsum xav txog qhov xwm txheej ntawm qhov load thiab Circuit Court. Ib qho hluav taws xob tsis zoo tuaj yeem ua rau txog li ib nrab ntawm tag nrho cov khoom thauj tam sim no ntws los ntawm cov av hauv av. Yog hais tias qhov ntsuas tam sim no siab heev, feem ntau yuav muaj teeb meem ntawm kev xaim. Cov dej ntws tam sim no kuj tuaj yeem tshwm sim los ntawm kev thauj khoom xau los yog tsis zoo rwb thaiv tsev.
Hnav windings nyob rau hauv lub cev muaj zog los yog ya raws nyob rau hauv lub clamping mechanism yog ib tug culprits. Yog tias koj xav tias muaj qhov xau, qhov kev sim hluav taws xob hluav taws xob nrog megohmmeter yuav pab ntsuas qhov ncaj ncees ntawm cov hluav taws xob hluav taws xob thiab pab txiav txim seb qhov teeb meem nyob qhov twg.
Plaub, lub clamp meter ntsuas txhua qhov load
Txhawm rau ntsuas cov khoom thauj tus kheej, lub pinout tuaj yeem siv rau ntawm lub qhov (socket). Nws tsuas yog ib qho txuas txuas ntxiv nrog cov rwb thaiv tsev sab nraud kom nthuav tawm cov xov hlau dub, dawb thiab ntsuab. Qhov no yooj yim dua li rub lub qhov (socket) tawm kom nkag mus rau cov xov hlau. Txuas lub load rau ntawm lub cable thiab ntsaws lub cable rau hauv lub qhov (socket). Txhawm rau ntsuas qhov load tam sim no, clamp lub hlau dub. Ua ib qho av tam sim no kos ncaj qha rau ntawm cov hlau ntsuab lossis ntawm cov hlau dub nrog rau cov hlau dawb.
Tsib, clamp meter xeem lub cev muaj zog thiab lub cev muaj zog tswj Circuit Court
Ib qho ntawm qhov nyuaj tshaj plaws los ntsuas tam sim no yog nyob rau hauv lub txee tswj, tshwj xeeb tshaj yog thaum nws siv IEC hom Cheebtsam. IEC-hom qhov chaw pib hauv Tebchaws Europe yog qhov sib txuam ntau dua li qhov sib txuas NEMA qhov chaw, thiab cov xaim yuav raug ntim nruj heev. Fluke 330 Series Clamps 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 los ntawm hluav taws xob hloov pauv ceev tsav. Cov tsav tsheb sib txawv tau dhau los ua ntau dua vim tias lawv txuag tau ntau lub zog.
Fluke 337 yog qhov zoo tshaj plaws clamp meter rau cov nram qab no lub cev muaj zog thiab tsav ntsuas:
Load loj: Lub cev muaj zog tam sim no sinking, ntsuas raws li qhov nruab nrab ntawm peb theem, yuav tsum tsis txhob tshaj lub cev muaj zog tag nrho load tam sim no ntsuas. Lub tapered clamp thiab backlighting nta ntawm lub rooj yog zoo tagnrho rau qhov kev ntsuas no. Multiply los ntawm qhov tso cai overload factor'
Ntawm qhov tod tes, cov motors nrog load tam sim no qis dua 60 feem pua ntawm tag nrho cov load tam sim no (raws li lawv nyob rau hauv feem ntau) ua tsis tau zoo thiab lawv lub hwj chim yam poob.
Tam sim no tshuav nyiaj li cas: Tam sim no qhov tsis sib npaug tuaj yeem qhia tau tias muaj teeb meem nrog lub cev muaj zog windings (piv txwv li, qhov sib txawv ntawm qhov sib txawv ntawm lub tshav winding vim qhov luv luv Circuit Court (feem ntau, qhov tsis sib npaug yuav tsum tsawg dua 10 feem pua). Peb-theem nruab nrab ntawm kev nyeem ntawv; tom qab ntawd nrhiav qhov siab tshaj qhov sib txawv ntawm qhov nruab nrab thiab sib faib los ntawm qhov nruab nrab.) Kev kub siab tam sim no tsis sib npaug yog ib theem tsis sib npaug thaum tsis muaj tam sim no hauv ib qho ntawm peb theem. Qhov no feem ntau tshwm sim los ntawm qhib fuse ua rau.
Inrush tam sim no: Cov motors uas ncaj qha pressurized (los ntawm ib tug neeg kho tshuab starter) muaj ib tug inrush tam sim no (lub inrush tam sim no nyob ib ncig ntawm 500 feem pua ntawm cov laus motors thiab mus txog rau 1200 feem pua ntawm lub zog-npaum motors. Fluke 337 Clamp Meter's "Inrush Current" feature yog ib qho tshwj xeeb uas tsim los ua kom muaj kev cuam tshuam tam sim no thiab ntes nws tus nqi tiag.
Peak loads (shock loads): Qee lub cev muaj zog muaj 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 khiav mus rau hauv ib qho nyuaj knotted chainsaw. 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 poob siab.
Clamp meters yog cov cuab yeej tseem ceeb rau cov neeg siv hluav taws xob, txawm nyob hauv tsev lossis chaw lag luam.
