Aliyense mwina amadziwa ma metre mphamvu zamagetsi. Masiku ano, ma smart mita amagwiritsidwa ntchito kuyeza ndikulipira magetsi apanyumba. Mukayang'anitsitsa, mudzapeza kuti pali chizindikiro cha 5 (60) cholembedwa pamalo otchuka a mita ya mphamvu yamagetsi.

Mwachitsanzo, chizindikiro chomwe chili mu bwalo lofiira pa chithunzi pamwambapa: 5 (60) A. Tikayang'ana gawoli, tikudziwa kuti linalembedwa ngati lamakono, ndiye pali mgwirizano wotani pakati pa mafunde awiriwa? Kodi chimachitika ndi chiyani pamene madzi adutsa? Tiyeni tikambirane zomwe mikondo iwiriyi ikutanthauza molingana ndi mabakiti akunja (5) ndi mkati mwa bulaketi (60).
Zomwe zili m'mabulaketi
Zomwe zili m'mabala - 60A mu chitsanzo, zimatanthawuza kuchuluka kwamphamvu kwa mita ya mphamvu. Mosiyana ndi zipangizo zina, mphamvu yamagetsi yamagetsi yamagetsi imakhudzidwa kwambiri ndi zinthu zachilengedwe, kotero kuti malire ena nthawi zambiri amasiyidwa akachoka ku fakitale - chiwerengero chenichenicho chapamwamba kwambiri ndi 120% chamakono olembedwa. Chifukwa chake, ngati nambala yomwe ili m'mabungwe ndi 60, kuchuluka kwake komwe kumawerengedwa pano ndi 72A - ngati simalo ovuta kwambiri, zotsatira zake pamlingo wapamwamba kwambiri sizingafike 20%. Chifukwa chake, kuchuluka kwamphamvu kwa mita yodziwika ndi 60A nthawi zambiri kumakhala pafupifupi 66A pakugwiritsa ntchito kwenikweni.
Kodi chimachitika ndi chiyani mtengowu ukapyola? Yankho ndi miyeso yolakwika - mwina zambiri, mwina zochepa.
Mabulaketi akunja apano
5 kunja kwa mabatani apa amatchedwa maziko apano, amatchedwanso calibration current. Zimatsimikiziridwa ndi chiyambi cha mphamvu yamagetsi yamagetsi - mtengo wocheperapo womwe umalola kuti mita yamagetsi ikhale yozungulira mosalekeza ndikuyesa mosalekeza. Kuyambira kwa mita yanzeru ndi 0.4% yazomwe zidavotera. Ndiko kuti, mita yokhala ndi mphamvu ya 5A idzaperekedwa malinga ngati yomwe ili muderali ikufika ku 0.02A ikagwiritsidwa ntchito. Padzakhala chiŵerengero pakati pa oveteredwa panopa ndi pazipita oveteredwa panopa, monga 5 (60) A, umene ndi 4 nthawi ubale. Chiŵerengero ichi chimatchedwa "load width". Nthawi zambiri, pali 2 nthawi, 4, 6, 8 nthawi kapena kuposa kakhumi - kukula kwa katunduyo, kulimba kwaukadaulo wofunikira, ndipo mtengo wa mita udzakhala wapamwamba kwambiri.
Choncho, manambala omwe ali kunja kwa mabatani alibe chochita ndi kugwiritsidwa ntchito kwenikweni kwa wogwiritsa ntchito-zochulukirapo kapena zochepa kuposa mtengo uwu sizidzakhudza metering ya mita. Pali makamaka mbali ziwiri zomwe zimakhudzidwa ndi kuwerengetsera panopa: mtengo wa mita (wokhudzana ndi kuchuluka kwa katundu) ndi poyambira panopa (kuwerengeredwa ndi kuwerengetsera panopa).