在(zai)平常的(de)噴塑流程作業(ye)中(zhong)，30千(qian)伏到50千(qian)伏左右(you)的(de)電(dian)(dian)(dian)(dian)壓值為(wei)理想、合適的(de)電(dian)(dian)(dian)(dian)壓值。蝕(shi)刻沖孔(kong)網又稱微孔(kong)網，封閉母線用于集成電(dian)(dian)(dian)(dian)路印刷，熒(ying)光屏電(dian)(dian)(dian)(dian)子格柵，過濾，微電(dian)(dian)(dian)(dian)極元件(jian)，電(dian)(dian)(dian)(dian)子行業(ye)的(de)平面引腳、引線框架、基(ji)片等，加工工藝比較，大致可分為(wei)化學(xue)蝕(shi)刻和電(dian)(dian)(dian)(dian)解蝕(shi)刻兩(liang)種。覆膜工藝的(de)優(you)點很(hen)多，既(ji)不會被空(kong)氣和濕度氧(yang)化，在(zai)生(sheng)產制(zhi)作過程中(zhong)又減小了對鋁(lv)板的(de)傷害。篩分效(xiao)果并不僅(jin)僅(jin)只受這些因為(wei)影(ying)響，比如(ru)說開孔(kong)率或者(zhe)是其它問(wen)題(ti)(ti)，都有可能成為(wei)我們問(wen)題(ti)(ti)的(de)根(gen)源。

現(xian)代高(gao)層建(jian)筑和(he)大(da)(da)型的(de)(de)(de)車間需(xu)要巨大(da)(da)的(de)(de)(de)電能，而(er)面對這(zhe)龐大(da)(da)負荷(he)所需(xu)成百(bai)上千安培的(de)(de)(de)強大(da)(da)電流就要選(xuan)用的(de)(de)(de)傳導設(she)備(bei)，空(kong)氣型母(mu)(mu)線(xian)槽批發，母(mu)(mu)線(xian)系統(tong)便是(shi)很(hen)好的(de)(de)(de)選(xuan)擇。母(mu)(mu)線(xian)槽系統(tong)是(shi)一個(ge)輸送(song)電流的(de)(de)(de)配電裝置，尤其適(shi)應了越(yue)來(lai)越(yue)高(gao)的(de)(de)(de)建(jian)筑物和(he)大(da)(da)規模工(gong)廠經濟(ji)合理配線(xian)的(de)(de)(de)需(xu)要。

母線槽從空(kong)氣型發展到現在的(de)復合絕(jue)緣型共經(jing)歷了三代(dai)。

1.代空氣型母(mu)線槽（BMC）：

上世紀50年代中期起，將導(dao)電排用(yong)絕緣襯墊支(zhi)撐(cheng)在殼(ke)體(ti)內，靠(kao)空氣介質絕緣。相間(jian)(jian)距(ju)離50mm。由于母線之間(jian)(jian)接(jie)(jie)頭用(yong)銅片軟接(jie)(jie)過(guo)渡，在南方天氣潮濕，昆明空氣型母線槽(cao)，接(jie)(jie)頭之間(jian)(jian)容易產(chan)生氧化，形成接(jie)(jie)頭與(yu)母線接(jie)(jie)觸不良(liang)，使(shi)觸頭容易發熱(re)，故在南方使(shi)用(yong)。并(bing)且接(jie)(jie)頭之間(jian)(jian)體(ti)積過(guo)大，空氣型母線槽(cao)公司，水平母線段尺寸不一致(zhi)，外形不夠美觀。外殼(ke)防護等級有(you)IP40~IP54。

選(xuan)擇(ze)經(jing)(jing)濟(ji)(ji)的(de)(de)(de)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)截(jie)(jie)(jie)(jie)面(mian)(mian)：一般(ban)應(ying)根據(ju)長(chang)(chang)(chang)(chang)期工(gong)(gong)作電(dian)(dian)(dian)(dian)(dian)流選(xuan)擇(ze)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)截(jie)(jie)(jie)(jie)面(mian)(mian)。并在通(tong)過(guo)(guo)短(duan)路電(dian)(dian)(dian)(dian)(dian)纜的(de)(de)(de)情(qing)況下，檢(jian)查母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)的(de)(de)(de)短(duan)期熱(re)穩定(ding)性和動態穩定(ding)性。由于多根導體靠近時(shi)導體的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)阻和交流電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)計量(liang)效(xiao)應(ying)等因(yin)素的(de)(de)(de)影響，母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)在電(dian)(dian)(dian)(dian)(dian)流通(tong)過(guo)(guo)時(shi)會發(fa)熱(re)。銅、鋁裸(luo)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)長(chang)(chang)(chang)(chang)期運行時(shi)允(yun)(yun)許加熱(re)溫度(du)(du)為70℃，但當接觸(chu)面(mian)(mian)可靠鍍錫(xi)（如超聲(sheng)波鍍錫(xi)等）時(shi)，空氣型(xing)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)生產(chan)商，允(yun)(yun)許溫度(du)(du)提高到(dao)85℃，并允(yun)(yun)許連續加熱(re)。由于溫度(du)(du)限(xian)制，不同(tong)材(cai)料和截(jie)(jie)(jie)(jie)面(mian)(mian)的(de)(de)(de)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)給(gei)出相應(ying)的(de)(de)(de)長(chang)(chang)(chang)(chang)期允(yun)(yun)許電(dian)(dian)(dian)(dian)(dian)流值。選(xuan)擇(ze)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)截(jie)(jie)(jie)(jie)面(mian)(mian)時(shi)，母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)實際長(chang)(chang)(chang)(chang)期工(gong)(gong)作電(dian)(dian)(dian)(dian)(dian)流應(ying)小(xiao)于所選(xuan)截(jie)(jie)(jie)(jie)面(mian)(mian)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)的(de)(de)(de)長(chang)(chang)(chang)(chang)期允(yun)(yun)許電(dian)(dian)(dian)(dian)(dian)流值。當年均負荷較(jiao)大且母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)較(jiao)長(chang)(chang)(chang)(chang)時(shi)（如室外(wai)配(pei)電(dian)(dian)(dian)(dian)(dian)裝置母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)），通(tong)常按經(jing)(jing)濟(ji)(ji)電(dian)(dian)(dian)(dian)(dian)流密(mi)度(du)(du)法(fa)選(xuan)擇(ze)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)。經(jing)(jing)濟(ji)(ji)電(dian)(dian)(dian)(dian)(dian)流密(mi)度(du)(du)是在考慮母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)和輔(fu)助(zhu)設備的(de)(de)(de)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)損(sun)耗、年維護和折舊成本低(di)時(shi)流過(guo)(guo)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)單位截(jie)(jie)(jie)(jie)面(mian)(mian)積的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流。用(yong)經(jing)(jing)濟(ji)(ji)電(dian)(dian)(dian)(dian)(dian)流密(mi)度(du)(du)除以長(chang)(chang)(chang)(chang)期工(gong)(gong)作電(dian)(dian)(dian)(dian)(dian)流（不包括過(guo)(guo)載）得到(dao)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)截(jie)(jie)(jie)(jie)面(mian)(mian)。經(jing)(jing)濟(ji)(ji)電(dian)(dian)(dian)(dian)(dian)流密(mi)度(du)(du)法(fa)選(xuan)擇(ze)的(de)(de)(de)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)截(jie)(jie)(jie)(jie)面(mian)(mian)一般(ban)大于按較(jiao)大長(chang)(chang)(chang)(chang)期工(gong)(gong)作電(dian)(dian)(dian)(dian)(dian)流選(xuan)擇(ze)的(de)(de)(de)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)截(jie)(jie)(jie)(jie)面(mian)(mian)。