Taw qhia: Hauv cov tshuab hluav taws xob, kev xa hluav taws xob los ntawm cov cables yog ib qho tseem ceeb heev.Qhov voltage poob hauv cov kab

yog ib qho kev txhawj xeeb uas cuam tshuam rau kev ua tau zoo thiab kev ua haujlwm ntawm cov khoom siv hluav taws xob.Nkag siab qhov ua rau ntawm qhov hluav taws xob

poob thiab yuav ua li cas xam nws yog ib qho tseem ceeb rau cov engineers hluav taws xob thiab cov kws tshaj lij.Hauv tsab xov xwm no, peb yuav tshawb txog cov laj thawj

qab voltage poob nyob rau hauv cables thiab muab ib tug yooj yim txoj kev xam, nrog rau cov tswv yim piv txwv.

Ua rau voltage poob hauv cables:

Resistance: Lub hauv paus ua rau ntawm qhov hluav taws xob poob hauv cov cables yog qhov tsis kam ntawm cov khoom siv hluav taws xob.Thaum hluav taws xob

tam sim no ntws los ntawm ib tug cable, nws ntsib kuj, ua rau ib tug poob nyob rau hauv voltage raws li qhov ntev ntawm cable.Qhov no kuj

yog cuam tshuam los ntawm cov khoom xws li cov khoom siv cable, qhov ntev, thiab qhov chaw hla ntu.

Cable loj: Siv undersized cables rau ib tug muab hluav taws xob load tuaj yeem ua rau muaj kev tiv thaiv ntau dua, ua rau muaj qhov cuam tshuam loj heev.

Nws yog ib qho tseem ceeb uas yuav tau xaiv cov cables uas tsim nyog qhov ntau thiab tsawg raws li qhov xav tau tam sim no ntws kom txo qis qhov hluav taws xob poob.

Cable ntev: Cov cables ntev dua yuav muaj qhov hluav taws xob ntau dua vim qhov kev ncua deb ntawm cov hluav taws xob tam sim no mus.

Yog li ntawd, thaum tsim cov tshuab hluav taws xob, nws yog ib qho tseem ceeb uas yuav tsum xav txog qhov ntev ntawm cable thiab tsim nyog xaiv qhov ntau thiab tsawg los yog cable

siv cov ntsuas hluav taws xob poob kom ntseeg tau tias kev ua haujlwm zoo.

Kev suav cov hluav taws xob poob: Qhov hluav taws xob poob hauv ib lub cable tuaj yeem suav nrog Ohm txoj cai, uas hais tias qhov hluav taws xob poob (V) yog

sib npaug ntawm cov khoom tam sim no (I), tsis kam (R), thiab cable ntev (L).Ua lej, V = I * R * L.

Txhawm rau xam qhov hluav taws xob poob kom raug, ua raws li cov kauj ruam no: Kauj Ruam 1: Txiav txim siab qhov siab tshaj plaws tam sim no (I) ntws los ntawm cable.

Qhov no tuaj yeem tau txais los ntawm cov khoom siv tshwj xeeb lossis kev suav cov load.Kauj Ruam 2: Txiav txim siab qhov tsis kam (R) ntawm cable los ntawm kev xa mus

mus rau cov chaw tsim khoom cable cov specifications lossis kev sab laj cov qauv tsim nyog.Kauj Ruam 3: Ntsuas lossis txiav txim qhov ntev cable (L) kom raug.

Kauj Ruam 4: Muab qhov tam sim no (I), qhov tsis kam (R), thiab cable ntev (L) ua ke kom tau txais qhov hluav taws xob poob (V).Qhov no yuav muab tus nqi

qhov hluav taws xob poob hauv volts (V).

Piv txwv li: Cia peb xav txog qhov xwm txheej uas 100-meter cable nrog qhov tsis kam ntawm 0.1 ohms ib meter yog siv los xa cov tam sim no ntawm 10 amps.

Txhawm rau xam qhov voltage poob:

Kauj ruam 1: I = 10 A (muab) Kauj Ruam 2: R = 0.1 ohm / m (muab) Kauj Ruam 3: L = 100 m (muab) Kauj Ruam 4: V = I * R * LV = 10 A * 0.1 ohm / m * 100mV = 100v

Yog li, qhov poob qis hauv qhov piv txwv no yog 100 volts.

Xaus: Kev nkag siab txog qhov ua rau muaj qhov poob qis hauv cov cables thiab yuav ua li cas xam nws yog qhov tseem ceeb rau kev tsim hluav taws xob zoo tsim thiab

kev ua tau zoo.Kev tiv thaiv, cable loj, thiab ntev cable yog yam uas ua rau muaj zog poob.Los ntawm kev ua hauj lwm Ohm txoj cai thiab cov muab

Txoj kev suav, engineers thiab cov kws tshaj lij tuaj yeem txiav txim siab qhov voltage poob thiab txiav txim siab paub kom txo qis nws cov teebmeem.

Kev tsim cov kab hluav taws xob kom zoo thiab kev txiav txim siab ntawm qhov poob qis yuav ua rau muaj txiaj ntsig zoo thiab txhim khu kev qha hluav taws xob.