Nta ntawm Prepayment Electricity Meters:
Siv cov loj- nplai sib xyaw ua ke thiab SMT ua tshuab kom ntseeg tau cov khoom lag luam siab.
Lub ntsuas hluav taws xob muaj kev siv hluav taws xob tsawg, poob qis hauv qab cov kev cai ntawm lub teb chaws cov qauv:
Voltage Circuit Court: Tsawg dua lossis sib npaug ntawm 0.7W thiab 4VA (National Standard: Tsawg dua lossis sib npaug rau 2W thiab 10VA)
Tam sim no Circuit Court: Tsawg dua lossis sib npaug rau 0.3VA (National Standard: Tsawg dua lossis sib npaug rau 4.0VA)
Muaj peev xwm tiv thaiv- tub sab tub nyiag: Peb lub tuam txhab ib zaug -theem hluav taws xob hluav taws xob ntsuas hluav taws xob siv cov thev naus laus zis tiv thaiv- tub sab nyiag. Lawv tsis tsuas yog tiv thaiv txoj kev tub sab xwb-xws li qaij lub ntsuas, siv cov khoom sib nqus sab nraud, luv -circuiting, lossis rov qab siv fais fab-tab sis kuj muaj kev tiv thaiv tshwj xeeb tiv thaiv "ib- nyob- xaim- rau - av " tub sab schemes.
Raws li kev tsim qauv, lub ntsuas hluav taws xob tau tsim los nrog qhov tamper- pov thawj lub davhlau ya nyob twg los tiv thaiv hluav taws xob nyiag los ntawm luv luv -circuiting.
Lub 'meter' nta kev ntsuas dav dav, muaj peev xwm tuav ntau tshaj 6 npaug ntawm qhov ntsuas tam sim no.
Lub ntsuas ntsuas suav nrog kev tiv thaiv - creep logic circuit; Thaum raug rau 125% ntawm qhov ntsuas hluav taws xob, lub ntsuas hluav taws xob ua tsis muaj qhov ntsuas pulse tso zis.
Lub 'meter' muaj peev xwm pib thiab ua kom raug kaw qhov kev siv ntawm qhov kev thauj khoom tsawg li 0.4% ntawm qhov ntsuas tam sim no (Ib).
Lub ntsuas hluav taws xob ua haujlwm nyob rau hauv ntau qhov hluav taws xob ntau: nws tseem ua haujlwm ib txwm muaj txawm tias tsis muaj kev cuam tshuam rau qhov kev txhawb nqa overvoltage ntawm 380VAC.
Muaj nuj nqi ntawm Prepayment Electricity Meters:
Tsis siv neeg lub hwj chim disconnection tshwm sim thaum cov khoom siv hluav taws xob tau txais tag nrho.
Optional load tswj feature: fais fab tuag txiav tawm tom qab lub sij hawm ncua yog hais tias lub load tshaj qhov preset txwv.
Tsawg- credit tswb: ceeb toom rau tus neeg siv thaum muaj hluav taws xob qis qis, ceeb toom lawv kom yuav khoom siv hluav taws xob ntau raws sijhawm.
Lub LCD npo cycles los ntawm ntau yam kev siv tsis, tso cai rau cov neeg siv yooj yim saib xyuas lawv cov ntaub ntawv siv hluav taws xob.
Lub LCD npo ib txhij qhia ob qho tib si kev siv hluav taws xob sib xyaw thiab cov nyiaj tshuav tshuav nyob rau hauv ib hom ntawv meej thiab intuitive.
Siv ISO- qauv IC phaib uas muaj cov ntaub ntawv dynamic encryption algorithm rau kev ruaj ntseg thiab txhim khu kev qha; txhua lub 'meter' tau muab ib daim npav tshwj xeeb, tshwj xeeb.
Txhawb siab -meter peev xwm- nyeem ntawv, ua kom paub tseeb thiab sau cov ntaub ntawv sau thaum lub ntsuas ntsuas.
Daim npav yuav khoom hluav taws xob tau txais thiab xa cov ntaub ntawv siv los ntawm lub ntsuas hluav taws xob, ua kom yooj yim rau kev tswj hwm thiab siv cov ntaub ntawv pov thawj.
Dedicated configuration cards thiab meter -cov npav hloov pauv tau muab los ua kom yooj yim rau kev sau npe thiab kev saib xyuas cov txheej txheem rau cov chaw tswj hluav taws xob.
Koom nrog lub hwj chim-cov ntaub ntawv khaws cia thev naus laus zis, lav tias tsis muaj cov ntaub ntawv ploj mus txog 30 xyoo thaum muaj hluav taws xob poob.