Yuav ua li cas yog muab xam rau ntawm qhov hluav taws xob load

Ua ntej cov tswv yim rau tus tsim ntawm electrics nyob rau hauv koj lub tsev, chav tsev, tsev, koj yuav tsum xub ua ib tug muab xam tswvyim, uas yuav tsum tau teev tseg tag nrho cov kev tsim cov load nyob rau thaj chaw, raws li zoo raws li qhov ntev ntawm tus neeg seem ntawm lub cable. Yuav kom tsim xws li ib tug card thiab koj yuav tsum tau xam qhov hluav taws xob load. Yog hluav taws xob Circuit Court tsim ntawm tus kwv yuav tuaj tos cov nyob ntawm tej thiab cables yuav tsum tau seem. Nyob rau hauv tus neeg mob qhov twg lub cable ntoo khaub lig-section tsawg tshaj li uas yuav tsum tau rau lub qub functionality ntawm xyaw muaj hwj huam qaum pib overheat. Thiab as a consequence yog kev puas tsuaj ntawm cov rwb thaiv tsev. Raws li ib tug tshwm sim, lub duration ntawm lub lag luam thiab kev cia siab ntawm lub xov txheej yog significantly txo. Ntxiv mus, cable overheating yuav ua rau muaj hluav taws kub. Lub sijhawm zoo tshwm sim feem ntau heev thaum xauj (txuag) yog siv hlau seem, yog tsawg tshaj li yuav tsum tau. Cov no ib tug luv luv Circuit Court thiab hluav taws. Cia peb kawm saib, dab tsi yog qhov muab xam los ntawm cov hluav taws xob load.

Qhov tseeb xaiv ntawm switching pab kiag li lawm thiab cable ntoo khaub lig-section nyob rau qhov sib txawv tseem ceeb ntawm ciaj ciam ntawm hluav taws xob tes hauj lwm. Qhov tseem ceeb tshaj ntawm lawv yog cov hluav taws xob tam sim no load. Thaum tus tsim theem qhov kev cai tswjhwm tus nqi yuav tsum tau txiav txim thiaj tau tuaj xyuam xim txoj kev. Nws yog ib tug heev ib qho tseem ceeb muab xam los ntawm hluav taws xob loads nyob rau hauv peb-theem tes hauj lwm, raws li ib tug load ntawm lawv yuav tsum tau muab tso rau tusyees ntawm cov theem, kom tsis txhob distortions ntawm voltage. Txawm li cas los, nyob rau hauv domestic tes hauj lwm xws xam yuav tsum tau nqa tawm nyob rau hauv lub tsim ntawm tsis tsuas yog lub ntaub thaiv npog tab sis kuj thaj.

Hluav taws xob cov load xam yog nqa tawm rau paub qhov tseem ceeb ntawm hwj chim hluav taws xob pab kiag li lawm, qhov xwm ntawm tus loads thiab cov mains voltage. siv mis rau kev txiav txim lub load tam sim no rau ib theem tes hauj lwm: I = P / (U × cosφ), qhov chaw uas:

• U - lub sij nqi ntawm cov mov voltage (ntsuas nyob rau hauv volts);
• cosφ - coj hwj chim tshaj.

Rau peb-theem tes hauj lwm muab xam rau ntawm hluav taws xob loads yog nqa tawm raws li nram qab no mis: Kuv = P / (1,73 × U × cosφ).

Nyob ntawm seb qhov xwm ntawm tus load hwj chim tshaj tus nqi yog xaiv. Nyob rau hauv cov lus teb rau hauv lub reactive load ntawm tus muaj hwj huam (txhawm chim teeb pom kev zoo, electric motors, transformers thiab lwm yam welding.) Nruab nrab nqi coj cosφ = 0,8. Nyob rau hauv kev txiav txim tam sim no hwj chim rau tus nquag load (rhaub hais, incandescent teeb) hwj chim tshaj kwv yees li sib npaug zos rau ib tug. Txawm li cas los, tej resistive load yeej ib txwm reactive tivthaiv yog tam sim no, li ntawd, cov lus teb tau siv tus nqi cosφ = 0,95.

Nyob rau hauv xaus, peb rov qab hais tias hluav taws xob tsis zam txim rau yuam kev, nws tsis muab ob feem. Kev Nyab Xeeb thiab kev cia siab ntawm hluav taws xob - uas aspires rau tej kev electrician. Thiab tsis muaj teeb meem qhov twg nws ua hauj lwm: ntawm chaw ua hauj lwm los yog nyob rau hauv lub private sector. Hluav taws xob cov load - qhov no yog ib tug ntawm cov tseem ceeb tshaj plaws tsim tsis tau hais tias yuav tsum muab suav hais tias nyob rau hauv tej system.