Tam sim no transformers (CTs) yog cov cuab yeej siv hluav taws xob tseem ceeb siv hauv cov tshuab hluav taws xob hluav taws xob kom txo qis cov hluav taws xob hloov pauv mus rau tus qauv qis tus nqi-feem ntau 1 A lossis 5 A- rau kev ntsuas kev nyab xeeb thiab kev tiv thaiv. Lawv muab hluav taws xob cais tawm ntawm qhov siab -voltage thawj Circuit Court thiab qis-voltage secondary instruments, ua kom cov meters, relays, thiab saib xyuas cov cuab yeej ua haujlwm zoo thiab raug. Vim tias qhov chaw sib txawv ntawm kev teeb tsa, kev ntsuas tam sim no, thiab cov kev xav tau raug xav tau sib txawv ntawm lub cev, cov tuam ntxhab tau tsim ntau hom kev hloov pauv tam sim no. Nkag siab txog cov hom no yog thawj kauj ruam ntawm kev xaiv cov cuab yeej tsim nyog rau txhua daim ntawv thov.
Kev faib tawm feem ntau yog ua raws li kev tsim kho thiab cov txheej txheem uas tus neeg xyuas pib cuam tshuam nrog cov tub ntxhais sib nqus. Cov hom loj muaj xws li qhov txhab, bar, qhov rai, nplhaib, cais-core, thiab bushing tam sim no transformers.
A qhov txhab tam sim no transformermuaj ib tug thawj winding muaj xws li ib los yog ntau tshaj lem lub cev raug mob nyob ib ncig ntawm lub magnetic core, nrog rau lub thib ob winding kuj raug mob rau tib lub core. Qhov kev tsim no muab qhov tseeb zoo ntawm cov thawj tam sim no qis vim tias ntau -tig thawj tso cai rau kev tswj tus piv txwv. Cov kab mob CTs feem ntau yog siv hauv kev sim kuaj, ntsuas qhov ntsuas qhov tseeb, thiab kev tswj hwm kev lag luam uas ntsuas qhov tseeb yog qhov tseem ceeb. Txawm li cas los xij, lawv feem ntau kim dua li lwm hom thiab tuav lub hneev taw loj dua, ua rau lawv tsis haum rau siab -tam sim no lossis qhov chaw- txwv kev teeb tsa.
A bar hom tam sim no transformersiv cov khoom siv hluav taws xob lossis busbar mus tas li ua rau hauv CT ua tus thawj winding. Qhov bar no ua raws li ib zaug xwb - tig thawj, thaum lub voj voog thib ob yog qhov txhab nyob ib ncig ntawm lub laminated magnetic core. Kev tsim kho muaj zog ntawm bar- hom CTs ua rau lawv tuaj yeem tiv taus cov kev ua txhaum loj tam sim no thiab cov neeg kho tshuab kev ntxhov siab, ua rau lawv zoo tagnrho rau cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab cov chaw tsim khoom loj uas yuav tsum tau ntsuas tam sim no thiab kev tiv thaiv.
A qhov rais tam sim no transformer(tseem hu ua pass-dhau los yog toroidal CT) tsis muaj qhov tshwj xeeb winding. Hloov chaw, lub hwj chim tus neeg xyuas pib lossis cable hla dhau qhov qhib nruab nrab - lossis qhov rais - ntawm transformer, ua ib zaug xwb - tig thawj winding. Qhov rai CTs yog compact, tsawg- nqi, thiab yooj yim rau nruab, ua rau lawv ib tug ntawm cov feem ntau siv hom nyob rau hauv lub motor control centers, switchboards, thiab fais fab faib vaj huam sib luag. Anplhaib hom tam sim no transformeryog qhov tseem ceeb ntawm qhov rais CT nrog lub voj voog lossis toroidal magnetic core, muab cov haujlwm zoo sib xws nrog ntau qhov tshwj xeeb zoo li tus tub ntxhais geometry.
A split-core tam sim no transformernta ib tug sib nqus core muab faib ua ob halves uas yuav qhib tau, muab tso rau ib ncig ntawm ib tug uas twb muaj lawm nyob conductor, thiab clamped rov qab ua ke. Qhov kev tsim no tso cai rau kev teeb tsa yam tsis muaj kev cuam tshuam hauv Circuit Court, ua rau kev sib cais -Core CTs yog qhov tseem ceeb rau cov haujlwm retrofit, kev tshuaj xyuas lub zog, thiab kev teeb tsa ib ntus. Kev lag luam tawm -tawm yog qhov tseeb me ntsis piv rau cov khoom siv- cov qauv tsim vim yog kev taw qhia ntawm huab cua sib txawv ntawm qhov sib koom ua ke.
A bushing tam sim no transformeryog kev koom ua ke rau hauv lub bushing ntawm siab - cov khoom siv hluav taws xob xws li fais fab transformers, Circuit Court breakers, thiab generators. Cov CTs no cia li nruab nrab ntawm tus neeg xyuas pib hauv lub hauv paus, muab kev ntsuas txhim khu kev qha thiab kev tiv thaiv hauv siab -voltage substations thiab switchgear sib dhos.
Txhua hom transformer tam sim no muaj qhov sib npaug ntawm qhov raug, yooj yim installation, tam sim no - tuav peev xwm, thiab tus nqi. Qhov kev xaiv ntawm lawv nyob ntawm cov yam xws li qhov loj ntawm qhov tseem ceeb tam sim no, muaj qhov chaw teeb tsa, seb lub Circuit Court puas tuaj yeem de-energized, thiab qhov yuav tsum tau ntsuas qhov tseeb.