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一、電能表的選購

電能(neng)表的選購

在我(wo)國家庭住宅供電(dian)線(xian)路(lu)電(dian)壓(ya)是(shi)(shi)220V，頻率(lv)是(shi)(shi)50Hz，所選電(dian)能表(biao)的額定電(dian)壓(ya)和(he)適用頻率(lv)應與(yu)此(ci)線(xian)路(lu)電(dian)壓(ya)、頻率(lv)一致，也應是(shi)(shi)220V，50Hz。

選擇電(dian)(dian)能表時，電(dian)(dian)流(liu)(liu)值選擇最重要(yao)，也最復雜(za)。其(qi)一(yi)是起動(dong)電(dian)(dian)流(liu)(liu)，即能夠(gou)使轉(zhuan)盤連續轉(zhuan)動(dong)的最小電(dian)(dian)流(liu)(liu)；其(qi)二是最大額定電(dian)(dian)流(liu)(liu)相對(dui)基本電(dian)(dian)流(liu)(liu) 的倍數。另(ling)外，老式表和新式表在性(xing)能方面有差異。

目前老住宅仍在(zai)使用的(de)(de)(de)(de)(de)舊式(shi)電(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)表(biao)(biao)，起(qi)(qi)動電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)比較大(da)(da)(da)，一般(ban)為(wei)(5%～10%);最(zui)大(da)(da)(da)額(e)定電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)小，一般(ban)小于(yu)等于(yu)2 ，在(zai)表(biao)(biao)盤(pan)的(de)(de)(de)(de)(de)盤(pan)面(mian)上(shang)只標一個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)值(zhi)(zhi)，且籠統地稱為(wei)額(e)定電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)。所以在(zai)舊電(dian)(dian)(dian)(dian)(dian)工手(shou)冊中(zhong)指出，使用時(shi)負載電(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)應(ying)大(da)(da)(da)于(yu)額(e)定電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)的(de)(de)(de)(de)(de)10%，小于(yu)120%或(huo)小于(yu) 125%。根據行業標準GB/T15283-94和(he)國際(ji)標準IEC521-1988生產的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)表(biao)(biao)，新建住宅中(zhong)使用的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)表(biao)(biao)起(qi)(qi)動電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)小，對于(yu)級表(biao)(biao)來說為(wei) 0.5% ；最(zui)大(da)(da)(da)額(e)定電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)大(da)(da)(da)，一般(ban)最(zui)大(da)(da)(da)額(e)定電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)為(wei)(2～4) ，有(you)的(de)(de)(de)(de)(de)可達(6～8)。在(zai)新電(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)表(biao)(biao)表(biao)(biao)盤(pan)的(de)(de)(de)(de)(de)盤(pan)面(mian)上(shang)標有(you)兩個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)值(zhi)(zhi)，如5(20A)，選用這個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)表(biao)(biao)時(shi)一方(fang)面(mian)要(yao)注意負載最(zui)小電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)不(bu)能(neng)(neng)(neng)低于(yu)起(qi)(qi)動電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)，即 0.5%×≥5A=0.025A；另一方(fang)面(mian)長期使用的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)值(zhi)(zhi)不(bu)能(neng)(neng)(neng)高(gao)于(yu)最(zui)大(da)(da)(da)額(e)定電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)值(zhi)(zhi)20A。選擇(ze)電(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)表(biao)(biao)時(shi)，應(ying)考(kao)慮(lv)到進入家庭(ting)的(de)(de)(de)(de)(de)各種電(dian)(dian)(dian)(dian)(dian)器日益增多，要(yao)留有(you)余量，也要(yao)合理(li)適度，因為(wei)倍數(shu)越(yue)大(da)(da)(da)的(de)(de)(de)(de)(de)表(biao)(biao)價錢越(yue)高(gao)。

括號(hao)前(qian)的(de)(de)(de)電(dian)流(liu)(liu)(liu)(liu)值10叫標定(ding)(ding)電(dian)流(liu)(liu)(liu)(liu)，是(shi)作(zuo)為計算負(fu)載基(ji)數(shu)(shu)電(dian)流(liu)(liu)(liu)(liu)值的(de)(de)(de)，括號(hao)內的(de)(de)(de)電(dian)流(liu)(liu)(liu)(liu)20叫額(e)(e)定(ding)(ding)最大電(dian)流(liu)(liu)(liu)(liu)，是(shi)能使電(dian)能表長期(qi)正(zheng)常工作(zuo)，而誤差與(yu)溫升(sheng)完全(quan)滿足(zu)規定(ding)(ding)要(yao)求(qiu)的(de)(de)(de)最大電(dian)流(liu)(liu)(liu)(liu)值。 根據規程要(yao)求(qiu)，直接(jie)接(jie)入式的(de)(de)(de)電(dian)能表，其標定(ding)(ding)電(dian)流(liu)(liu)(liu)(liu)應(ying)根據額(e)(e)定(ding)(ding)最大電(dian)流(liu)(liu)(liu)(liu)和過載倍(bei)數(shu)(shu)來確定(ding)(ding)，其中，額(e)(e)定(ding)(ding)最大電(dian)流(liu)(liu)(liu)(liu)應(ying)按(an)經(jing)核(he)準(zhun)的(de)(de)(de)客戶報裝負(fu)荷容量來確定(ding)(ding)；過載倍(bei)數(shu)(shu)， 對正(zheng)常運行(xing)中的(de)(de)(de)電(dian)能表實(shi)際負(fu)荷電(dian)流(liu)(liu)(liu)(liu)達到最大額(e)(e)定(ding)(ding)電(dian)流(liu)(liu)(liu)(liu)的(de)(de)(de)30%以上的(de)(de)(de)，宜(yi)取2倍(bei)表；實(shi)際負(fu)荷電(dian)流(liu)(liu)(liu)(liu)低(di)于(yu)30%的(de)(de)(de)，應(ying)取4倍(bei)表。

二(er)、關于我們

天津市(shi)三源申特(te)電氣設備銷(xiao)售有限公司堅持以(yi)研制(zhi)開發為基石、以(yi)銷(xiao)售為龍(long)頭、以(yi)生產為軸心的(de)(de)經(jing)營(ying)理念，逐步形成了(le)以(yi)科技為基礎、以(yi)市(shi)場為向(xiang)導、以(yi)質量為根本、以(yi)制(zhi)度(du)為保證的(de)(de)管(guan)理體系。

目前天(tian)津市三源(yuan)申特電氣設備(bei)銷售有限公(gong)司的(de)產品已經銷往(wang)(wang)各地，主(zhu)要銷往(wang)(wang)天(tian)津、新疆、江(jiang)蘇(su)、吉林、河南、河北、山(shan)東、山(shan)西(xi)等地區，并出口到非洲。

我們的(de)主營產品有：智(zhi)能電表、智(zhi)能水表、三相智能電表(biao)、單相智能(neng)電表、導軌式智能電表、燃氣(qi)智能電表、智能熱(re)量表

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