我們(men)德國(guó)有自(zi)己的公(gong)司(si)，直(zhi)接廠家合(he)作(zuo)專業(yè)(ye)銷(xiao)售多(duo)德dold繼電(dian)器、多(duo)德dold速度(du)控制(zhi)器、多(duo)德dold軟(ruan)起動(dòng)(dong)器、多(duo)德dold安全(quan)開關(guān)(guan)、多(duo)德dold模塊，壹手(shou)貨(huo)源，沒(mei)有(you)中(zhong)間環(huán)節(jié)(jie)更(geng)優(yōu)(you)勢(shì)(shi)。
多(duo)德dold繼電(dian)器的測(cè)試(shi)
多(duo)德dold繼電(dian)器是(shi)智(zhi)能(neng)預(yù)(yu)付費(fèi)(fei)電(dian)能(neng)表中(zhong)的關(guān)鍵器件，繼(ji)電(dian)器的壽命在(zai)某種程度(du)上決(jue)定(ding)了(le)電(dian)表壽命，該(gai)器件性(xing)能(neng)好壞對(duì)(dui)智(zhi)能(neng)預(yù)(yu)付費(fèi)(fei)電(dian)能(neng)表運(yùn)行(xing)至關(guān)重要(yao)。而(er)國(guó)內(nèi)(nei)、外(wai)繼(ji)電(dian)器生(sheng)產(chǎn)(chan)廠(chang)家眾(zhong)多(duo)，生(sheng)產(chǎn)(chan)規(guī)(gui)模相差(cha)較(jiao)大，技(ji)術(shù)水平相距懸(xuan)殊(shu)，性(xing)能(neng)參數(shù)千(qian)差(cha)萬別，因(yin)此(ci)，電(dian)能(neng)表生(sheng)產(chǎn)(chan)廠(chang)家在(zai)繼(ji)電(dian)器檢(jian)測(cè)選(xuan)型(xing)時(shí)(shi)必(bi)須有壹套完(wan)善(shan)的檢(jian)測(cè)裝(zhuang)置(zhi)，以(yi)保(bao)證(zheng)電(dian)表質(zhì)量(liang)。同(tong)時(shí)(shi)，國(guó)家電(dian)網(wǎng)也加強(qiáng)(qiang)了(le)智能(neng)電(dian)能(neng)表內(nèi)(nei)繼(ji)電(dian)器性(xing)能(neng)參數(shù)抽(chou)樣(yang)檢(jian)測(cè)，同(tong)樣(yang)需(xu)要(yao)相(xiang)應(yīng)的檢(jian)測(cè)設(shè)(she)備(bei)，檢(jian)驗(yàn)(yan)不同(tong)廠(chang)家生(sheng)產(chǎn)(chan)的電(dian)表質(zhì)量(liang)。然(ran)而(er)，目前(qian)繼(ji)電(dian)器檢(jian)測(cè)設(shè)(she)備(bei)不(bu)僅(jin)檢(jian)測(cè)項(xiàng)目(mu)比(bi)較(jiao)單(dan)壹，檢(jian)測(cè)過(guo)程不(bu)能(neng)實(shí)現(xiàn)(xian)自(zi)動(dòng)(dong)化(hua)，檢(jian)測(cè)數(shù)(shu)據(jù)(ju)需要(yao)人工處理和(he)分析(xi)，檢(jian)測(cè)結(jié)(jie)果具有各種隨機(jī)性(xing)、人(ren)為(wei)性(xing)，而(er)且，檢(jian)測(cè)效(xiao)率(lv)低(di)，安全(quan)性(xing)也得不(bu)到(dao)保(bao)證(zheng)。
近兩(liang)年(nian)來，國(guó)家電(dian)網(wǎng)逐步規(guī)(gui)範(fàn)(fan)了(le)電(dian)表技(ji)術(shù)要求，制定(ding)相(xiang)關(guān)(guan)行(xing)業(yè)(ye)標(biāo)準(zhǔn)(zhun)以(yi)及(ji)技(ji)術(shù)規(guī)(gui)範(fàn)(fan)，這(zhe)為(wei)繼電(dian)器參數(shù)(shu)檢(jian)測(cè)提(ti)出了(le)壹些(xie)技(ji)術(shù)難題，如繼電(dian)器的負(fù)載(zai)通斷能(neng)力、開關(guān)(guan)特性(xing)測(cè)試(shi)等。因(yin)此(ci)，迫切需要(yao)研(yan)究壹種(zhong)設(shè)(she)備(bei)，實(shí)(shi)現(xiàn)(xian)繼(ji)電(dian)器性(xing)能(neng)參數(shù)的綜(zong)合(he)檢(jian)測(cè)。
根(gen)據(jù)(ju)繼電(dian)器性(xing)能(neng)參數(shù)測(cè)試(shi)要(yao)求，測(cè)試(shi)項(xiàng)目(mu)可(ke)以(yi)分為(wei)兩(liang)大類，壹是(shi)不(bu)帶(dai)負(fù)載(zai)電(dian)流(liu)的測(cè)試(shi)項(xiàng)目(mu)，如(ru)動(dòng)(dong)作(zuo)值(zhi)、觸(chu)點(diǎn)接觸電(dian)阻(zu)、機(jī)械壽命；二是(shi)帶(dai)負(fù)(fu)載(zai)電(dian)流(liu)的測(cè)試(shi)項(xiàng)目(mu)，如(ru)觸點(diǎn)接觸電(dian)壓(ya)、電(dian)壽命、過(guo)負(fù)荷能(neng)力。
多(duo)德dold繼電(dian)器主(zhu)要測(cè)試(shi)項(xiàng)目(mu)簡(jiǎn)(jian)單(dan)介(jie)紹如(ru)下：（1）動(dòng)(dong)作(zuo)值(zhi)。繼(ji)電(dian)器動(dòng)(dong)作(zuo)時(shí)(shi)所(suo)需(xu)電(dian)壓(ya)值(zhi)。（2）觸(chu)點(diǎn)接觸電(dian)阻(zu)。觸電(dian)閉合(he)時(shí)(shi)，兩(liang)觸(chu)頭之(zhi)間的電(dian)阻(zu)值。（3）機(jī)械壽命。機(jī)械部分在(zai)不(bu)損(sun)壞的情況(kuang)下，繼(ji)電(dian)器反復(fù)(fu)開(kai)關(guān)動(dòng)(dong)作(zuo)次數(shù)。（4）觸(chu)點(diǎn)接觸電(dian)壓(ya)。觸(chu)電(dian)閉合(he)時(shí)(shi)，觸電(dian)回(hui)路中(zhong)施加(jia)壹定(ding)負(fù)(fu)載(zai)電(dian)流(liu)，觸(chu)點(diǎn)間電(dian)壓(ya)值(zhi)。（5）電(dian)壽命。繼電(dian)器驅(qū)動(dòng)(dong)線(xian)圈(quan)兩(liang)端(duan)施加(jia)額定(ding)電(dian)壓(ya)，觸(chu)點(diǎn)回(hui)路中(zhong)施加(jia)額定(ding)阻(zu)性(xing)負(fù)(fu)載(zai)時(shí)，每小(xiao)時(shí)循(xun)環(huán)小(xiao)於(yu)300次、占空(kong)比(bi)1∶4條件(jian)下，繼(ji)電(dian)器的可(ke)靠(kao)動(dòng)(dong)作(zuo)次數(shù)。（6）過(guo)負(fù)荷能(neng)力。繼電(dian)器驅(qū)動(dòng)(dong)線(xian)圈(quan)兩(liang)端(duan)施加(jia)額定(ding)電(dian)壓(ya)，觸(chu)點(diǎn)回(hui)路中(zhong)施加(jia)1．5倍額(e)定(ding)負(fù)(fu)載(zai)時(shí)，動(dòng)(dong)作(zuo)頻(pin)率(lv)（10±1）次/分條件(jian)下，繼(ji)電(dian)器可(ke)靠(kao)動(dòng)(dong)作(zuo)次數(shù)。
多(duo)德dold繼電(dian)器可(ke)靠(kao)性(xing)的影響(xiang)因(yin)素(su)
1.環(huán)境(jing)對(duì)(dui)繼(ji)電(dian)器可(ke)靠(kao)性(xing)的影響(xiang)：繼電(dian)器工作(zuo)在(zai)GB和(he)SF下的平均(jun)故障間隔(ge)時(shí)(shi)間zui高(gao),達(dá)到(dao)820000h,而(er)在(zai)NU環(huán)境(jing)下,僅(jin)60000h 。
2質(zhì)量(liang)等級(jí)對(duì)(dui)繼(ji)電(dian)器可(ke)靠(kao)性(xing)的影響(xiang)：當(dāng)選(xuan)用A1質(zhì)量(liang)等級(jí)的繼電(dian)器時(shí),平(ping)均(jun)故障間隔(ge)時(shí)(shi)間可(ke)達(dá)3660000h,而(er)選用(yong)C等級(jí)的繼電(dian)器平均(jun)故障間隔(ge)時(shí)(shi)間為(wei)110000,其間相(xiang)差33倍,可(ke)見繼(ji)電(dian)器的質(zhì)量(liang)等級(jí)對(duì)(dui)其(qi)可(ke)靠(kao)性(xing)能(neng)的影響(xiang)非常(chang)大。
3觸點(diǎn)形式(shi)對(duì)(dui)繼電(dian)器可(ke)靠(kao)性(xing)的影響(xiang)：繼電(dian)器的觸點(diǎn)形式(shi)也會(huì)對(duì)(dui)其(qi)可(ke)靠(kao)性(xing)產(chǎn)(chan)生(sheng)影響(xiang),單(dan)擲(zhi)型(xing)繼(ji)電(dian)器的可(ke)靠(kao)性(xing)都(dou)高(gao)於相(xiang)同(tong)刀(dao)數(shù)(shu)的雙擲(zhi)型繼(ji)電(dian)器,同(tong)時(shí)(shi)隨刀數(shù)(shu)的增加(jia)可(ke)靠(kao)性(xing)逐漸(jian)降(jiang)低(di),單(dan)刀(dao)單(dan)擲(zhi)繼(ji)電(dian)器的平均(jun)故障間隔(ge)時(shí)(shi)間是(shi)四(si)刀(dao)雙擲繼電(dian)器的5.5倍。
4結(jié)(jie)構(gòu)類型(xing)對(duì)(dui)繼電(dian)器可(ke)靠(kao)性(xing)的影響(xiang)：繼電(dian)器結(jié)構(gòu)(gou)類型(xing)共(gong)有24種(zhong),不同(tong)類型(xing)均(jun)對(duì)其(qi)可(ke)靠(kao)性(xing)產(chǎn)(chan)生(sheng)影響(xiang)。
5溫度(du)對(duì)繼(ji)電(dian)器可(ke)靠(kao)性(xing)的影響(xiang)：繼電(dian)器工作(zuo)溫度(du)範(fàn)(fan)圍在(zai)-25～70℃之(zhi)間。隨著溫度(du)的升(sheng)高(gao),繼電(dian)器的平均(jun)故障間隔(ge)時(shí)(shi)間逐漸(jian)下降(jiang)。
6動(dòng)(dong)作(zuo)速率(lv)對(duì)(dui)繼電(dian)器可(ke)靠(kao)性(xing)的影響(xiang)：隨著繼(ji)電(dian)器動(dòng)(dong)作(zuo)速率(lv)的提高(gao),平均(jun)故障間隔(ge)時(shí)(shi)間基(ji)本呈指(zhi)數(shù)型(xing)下降(jiang)趨(qu)勢(shì)(shi)。因(yin)此(ci),若設(shè)(she)計(jì)(ji)的電(dian)路(lu)要求繼電(dian)器的動(dòng)(dong)作(zuo)速率(lv)非(fei)常(chang)高(gao),那麼在(zai)電(dian)路(lu)維修時(shí)(shi)就(jiu)需(xu)要仔細(xì)(xi)檢(jian)測(cè)繼(ji)電(dian)器以(yi)便及(ji)時(shí)對(duì)(dui)它更(geng)換。
7電(dian)流(liu)比(bi)對(duì)(dui)繼電(dian)器可(ke)靠(kao)性(xing)的影響(xiang)：所(suo)謂(wei)電(dian)流(liu)比(bi)是(shi)繼(ji)電(dian)器的工作(zuo)負(fù)載(zai)電(dian)流(liu)與(yu)額定(ding)負(fù)(fu)載(zai)電(dian)流(liu)之(zhi)比(bi)。電(dian)流(liu)比(bi)對(duì)(dui)繼電(dian)器的可(ke)靠(kao)性(xing)影響(xiang)很(hen)大,尤其(qi)當(dāng)電(dian)流(liu)比(bi)大於0.1時(shí)(shi),平均(jun)故障間隔(ge)時(shí)(shi)間迅(xun)速下降(jiang),而(er)電(dian)流(liu)比(bi)小(xiao)於0.1時(shí),平均(jun)故障間隔(ge)時(shí)(shi)間基(ji)本不變(bian),因(yin)此(ci)在(zai)電(dian)路(lu)設(shè)計(jì)時(shí)(shi)應(yīng)選用額(e)定(ding)電(dian)流(liu)較(jiao)大的負(fù)載(zai)以(yi)降低(di)電(dian)流(liu)比(bi),這(zhe)樣(yang)可(ke)保(bao)證(zheng)繼電(dian)器乃至(zhi)整個(gè)(ge)電(dian)路(lu)不因(yin)工(gong)作(zuo)電(dian)流(liu)的波動(dòng)(dong)而(er)使(shi)可(ke)靠(kao)性(xing)降(jiang)低(di)。
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