Peb-theem hluav taws xob ntsuas tau muab faib ua peb-theem peb-xaim meters thiab peb-theem plaub-hlau meters.Muaj peb txoj hauv kev tseem ceeb: kev nkag ncaj qha, tam sim no transformer thaiv, thiab tam sim no thiab voltage transformer thaiv.Lub hauv paus ntsiab lus ntawm kev sib txuas ntawm peb-theem 'meter' yog feem ntau: txuas lub kauj tam sim no nrog cov khoom thauj, lossis txuas mus rau sab thib ob ntawm lub tshuab hloov tam sim no, thiab txuas cov hluav taws xob hluav taws xob sib txuas nrog cov khoom thauj lossis txuas mus rau theem nrab. sab ntawm lub voltage transformer.
Peb-theem plaub-xaim system, nyob rau hauv qis-voltage tis network, cov kab kis tau tus mob feem ntau siv peb-theem plaub-xaim system, uas peb kab sawv cev A, B, C peb-theem, thiab lwm yam yog qhov nruab nrab. kab N lossis PEN (yog tias lub voj voog fais fab yog qhov nruab nrab ntawm sab hauv av, cov kab nruab nrab kuj tseem hu ua kab nruab nrab (lub npe qub yuav tsum maj mam zam thiab hloov npe ua PEN. Yog tias tsis yog hauv av, qhov nruab nrab. kab tsis tuaj yeem hu ua kab nruab nrab hauv kev txiav txim siab nruj).
Nyob rau hauv ib-theem kis tau tus mob kab nkag mus rau tus neeg siv, muaj ob kab, ib tug hu ua theem kab L, thiab lwm yam yog hu ua kab nruab nrab N. Cov kab nruab nrab feem ntau dhau los ua lub voj tam sim no hauv ib theem. kab.Nyob rau hauv peb-theem system, thaum peb theem sib npaug, cov kab nruab nrab (zero kab) tsis muaj tam sim no, yog li nws yog hu ua peb-theem plaub-xaim system;nyob rau hauv 380V low-voltage tis network, thiaj li yuav tau txais 220V theem-rau-theem voltage los ntawm 380V theem-rau-theem voltage Teeb N kab, thiab qee zaus, nws kuj tseem siv tau rau xoom-ib ntu tam sim no. nrhiav kom tau, thiaj li saib xyuas qhov sib npaug ntawm peb-theem fais fab mov.
Peb-theem plaub-hlau 'meter' thaiv daim duab
Post lub sij hawm: Nov-26-2022