雖說現(xian)在每(mei)(mei)家每(mei)(mei)戶幾乎都裝了電(dian)(dian)表(biao)(biao),但是(shi)并不是(shi)所有的(de)居民(min)都知(zhi)道電(dian)(dian)表(biao)(biao)怎么看(kan)度(du)數(shu),對于電(dian)(dian)費計(ji)算方(fang)式(shi)也(ye)只有很模糊的(de)認識,電(dian)(dian)表(biao)(biao)怎么看(kan)度(du)數(shu)呢?一般的(de)直進式(shi)的(de)單相電(dian)(dian)表(biao)(biao)和三相電(dian)(dian)表(biao)(biao)可直接(jie)讀(du)取數(shu)字,減去上(shang)次的(de)讀(du)數(shu)就為(wei)這一階段的(de)電(dian)(dian)量(liang)(liang)。智能電(dian)(dian)表(biao)(biao)度(du)數(shu)怎么看(kan)呢?智能電(dian)(dian)表(biao)(biao)只有一個液晶屏,如(ru)果是(shi)單相里面會(hui)直接(jie)顯示總有電(dian)(dian)量(liang)(liang)和剩余電(dian)(dian)量(liang)(liang),直接(jie)讀(du)數(shu)就可以(yi)。
一般(ban)的直進(jin)式的單(dan)相電表(biao)和三相電表(biao)可直接讀取數(shu)字(zi),減去上次的讀數(shu)就為(wei)這一階段的電量。
三(san)相(xiang)電(dian)(dian)(dian)(dian)表通(tong)過電(dian)(dian)(dian)(dian)流(liu)(liu)互感(gan)(gan)器(qi)連接(jie)方式連接(jie),電(dian)(dian)(dian)(dian)表的(de)接(jie)線(xian)有10根,要觀察(cha)連接(jie)的(de)電(dian)(dian)(dian)(dian)流(liu)(liu)互感(gan)(gan)器(qi)的(de)電(dian)(dian)(dian)(dian)流(liu)(liu)比(bi)。電(dian)(dian)(dian)(dian)流(liu)(liu)互感(gan)(gan)器(qi)的(de)名(ming)牌上(shang)有電(dian)(dian)(dian)(dian)流(liu)(liu)比(bi),都是(shi)一個數字(zi)比(bi)5標出的(de),例如 100/5 、150/5 等,電(dian)(dian)(dian)(dian)表上(shang)讀取的(de)數字(zi)乘以電(dian)(dian)(dian)(dian)流(liu)(liu)比(bi)就是(shi)計量的(de)電(dian)(dian)(dian)(dian)量,精(jing)確的(de)還要加上(shang)變損和線(xian)損。
單(dan)相電表計量(liang)三相電的電量(liang),電量(liang)讀(du)取方式是直進式的連接(jie)電表的方式,讀(du)取電表上(shang)的數(shu)字乘以(yi)3,若(ruo)通過互(hu)感器連接(jie)的電表要讀(du)取電表數(shu)字乘以(yi)互(hu)感器電流倍數(shu)再乘以(yi)3。
智能(neng)電(dian)表(biao)(biao)只有一個液晶屏,如果是(shi)(shi)單(dan)相里(li)(li)面(mian)會(hui)直(zhi)(zhi)接(jie)顯示(shi)總有電(dian)量和剩(sheng)余(yu)(yu)電(dian)量,直(zhi)(zhi)接(jie)讀(du)數就可(ke)以。如果是(shi)(shi)IC卡電(dian)表(biao)(biao),只有發光管顯示(shi)就是(shi)(shi)單(dan)顯卡表(biao)(biao),那(nei)電(dian)表(biao)(biao)上面(mian)上會(hui)有個小紅點(dian)。紅色的(de)(de)(de)小點(dian)跳(tiao)到總用那(nei)里(li)(li)就是(shi)(shi)總用,,跳(tiao)到剩(sheng)余(yu)(yu)那(nei)里(li)(li)就是(shi)(shi)剩(sheng)余(yu)(yu)。雙(shuang)顯卡表(biao)(biao),讀(du)上面(mian)或(huo)下面(mian)都可(ke)以。三相的(de)(de)(de)預付費電(dian)表(biao)(biao)直(zhi)(zhi)入(ru)式的(de)(de)(de)直(zhi)(zhi)接(jie)讀(du)數。互(hu)感式的(de)(de)(de)用表(biao)(biao)的(de)(de)(de)讀(du)數乘以互(hu)感器(qi)倍率(lv)。