Tam sim no ceev

Lub neej qhov teeb meem - nws yog tsim nyog rau nruab ib tug tshiab mus los qhov hluav taws xob nyob rau hauv lub teb chaws. Tag nrho cov no yog - ntsawb, hlau, fasteners, xaiv ntawm qhov chaw rau installation. Siv nws thiab ua nws. Tab sis tsis muaj! Kuv tsis nco qab mus xyuas, thiab kuv siv lub hlau yuav tsum muaj? Yuav kom txiav txim tau yuav tsum tau siv ib lub sij hawm xws li tam sim no ceev, thiab nrhiav nws cov pub tus nqi.

Yuav ua li cas yog no daim duab, thiab yog vim li cas nws thiaj li tseem ceeb? Nws yog ntseeg hais tias nyob rau hauv ib txwm tej yam kev mob ntawm lub fais tam sim no kis tau los ntawm tag nrho cov ntim ntawm tus neeg xyuas pib. Simplistically - tus nqi ntawm cov tam sim no ntws los ntawm tus neeg xyuas pib seem yog suav tias yog nws cov ceev. Rau nws cov kev ntsuas nyob rau hauv lub SI system siv xws li ib tug unit yog ampere ib square Meter (A / m), thiab nws yog permissible mus nrhiav kom tau thaum ntws los ntawm cov hlau tam sim no.

Qhov twg xws yuav tsum tau? Nws yog heev yooj yim. Txhua neeg xyuas pib muaj ib tug tsis kam rau tam sim no txaus, uas cov "poob" ib feem. Qhov no "poob" tam sim no ua rau cov cua kub ntawm tus neeg xyuas pib. Yog hais tias lub losses yog loj, ces ua raws li los ntawm ntev thaum tshav kub kub neeg xyuas pib, thiab nws melts. Yuav kom qhov no tsis yog, rau txhua yam ntawm kev ntsuas yog muab permissible tam sim no ceev, raws li uas yuav xyuas kom meej txhim khu kev qha lag luam ntawm lub xov.

Nws yuav tsum tam sim no muaj tseeb hais tias yog zoo xaiv seem ntawm tus neeg xyuas pib, i.e. yuav tsum siv cov load, uas kov tseem ceeb lub hwj chim, los yog ob qho tib si muaj xws li ob peb khoom vaj khoom tsev (hwj kais, computer, TV, thiab lwm yam), tam sim no khiav yuav ua teeb meem loj cua sov ntawm lub nyob ntawm tej, thiab lawv yaj. Los yog pab raws li ib tug ua ntawm qhov hluav taws kub.

Yog vim li cas cov kev xaiv ntawm neeg xyuas pib ntoo khaub lig-sections, los yog nyob rau hauv lwm yam ntaub ntawv, thaum lub load kev twb kev txuas los, nws yog tsim nyog los noj mus rau hauv tus account lub permissible tam sim no ceev. Nyob rau hauv nqa tawm kev tsim ua hauj lwm rau lub hom phiaj ntawd tshwj xeeb cov qauv thiab cov ntxhuav siv los ntawm engineers. Txawm li cas los, lub xam seem ntawm cov hlau nyob rau hauv pub tam sim no ceev muab ib tug xam txig los ntawm ib tug tswv yim taw tes ntawm view qhov tshwm sim.

Yuav kom qhov no kawg, nws tsis yog tsim nyog los siv complex qauv thiab cumbersome spreadsheets. Nws yog tsuas tsim nyog los noj mus rau hauv tus account lub nqi - tam sim no ceev nyob rau hauv lub tooj liab hlau yuav tsum tsis txhob ntau tshaj li rau mus rau kaum amperes ib sq. millimeter. Qhov saum toj no cov ntaub ntawv no siv tau rau tooj liab. Raws li tam sim no siv mas tooj liab nyob ntawm tej, cov ntaub ntawv no yuav tsum txaus los mus txiav txim nws applicability.

Cov nuj nqis yuav tsum tau to taub raws li nram no. Nyob rau hauv lub lag luam nruam tam sim no ceev nyob rau hauv lub Circuit Court yuav tsum tsis txhob ntau tshaj 6 A / sq. hli. Tom qab ntawd, thaiv yuav khiav nyob rau hauv lite hom, thiab nws yuav siv tau rau ib tug ntev lub sij hawm. Txawm li cas los, tej zaum nws yuav tsum ua nyob rau hauv hom 10 A / sq. hli, tab sis xws li ib tug tsoom fwv yuav tsum luv luv-lived.

Raws li nws yog muab tso rau hauv kev xyaum? Nws yog tsim nyog los mus txiav txim lub siab tshaj plaws kev cob cog rua load. Cia nws yuav, piv txwv li, nyob rau tib lub sij hawm nws muaj ib tug chandelier nrog tsib teeb ntawm 100 watts, TV, computer, tub yees. Tag nrho cov muaj peev xwm tsis ntau tshaj li 5 kW, faib qhov no daim duab los ntawm lub mains voltage, 5,000 watts muab faib los ntawm 220, peb tau txais round nuj nqis 23A. Nws txhais tau tias muab ib tug luv luv lub sij hawm kev lag luam xws li tam sim no tso cai yuav tsum tau tooj liab hlau 2.5kb. millimeter.

Koj muaj peev xwm txoj kev ua no qhov teeb meem nyob rau hauv ib tug txawv txoj kev. Yog hais tias lub qhov hluav taws xob yog sau hais tias nws yog tsim los 6A tam sim no, ces siv tooj liab hlau ntau tshaj ib tug square. hli yog tsis tsim nyog, lub nplos hlawv ua ntej. Cia li rau cov lus qhia - yog hais tias lub luag hauj lwm ntawm lub conductive khoom yog txhuas, lub permissible tam sim no ceev yog 4-6 A / sq. hli. Yog li ntawd, uas siv cov nuj nqis, koj yuav txiav txim dab tsi seem ntawm cov hlau yuav tsum tau siv rau xov lub ntaus ntawv.

Qhov saum toj no-hais cov ntaub ntawv uas muab ib tug txhais ntawm lub tswvyim ntawm "tam sim no ceev". Nws tau piav qhov yuav tsum tau rau nws siv los xaiv tus yam hlau loj. Lub tswv yim pom zoo nyob rau kev siv ntawm no parameter thaum lub sij hawm lub lag luam.