G-GCS型裝置共有輔助(zhu)電路(lu)方(fang)案120個。

　　直流操作部分的輔助電路(lu)方案，主要用(yong)于發電廠變電站的低(di)壓(ya)系統，適(shi)用(yong)于20MW及(ji)以(yi)下和(he)300及(ji)以(yi)上容機(ji)組低(di)壓(ya)系統，工作(備用(yong))電源進(jin)線，電源饋(kui)線和(he)電動機(ji)饋(kui)線的一般控(kong)制方式。

　　交(jiao)(jiao)流操作部分的輔助(zhu)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)方(fang)案(an)主要用(yong)于(yu)發電(dian)(dian)(dian)(dian)(dian)(dian)廠(chang)變(bian)電(dian)(dian)(dian)(dian)(dian)(dian)所(suo)的低壓系統。有6種適用(yong)于(yu)雙電(dian)(dian)(dian)(dian)(dian)(dian)源控(kong)(kong)制(zhi)操作控(kong)(kong)制(zhi)的組合方(fang)案(an)。并設用(yong)操作電(dian)(dian)(dian)(dian)(dian)(dian)氣連鎖備用(yong)自投(tou)、復等控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)、工程(cheng)設計中可以直接采用(yong)。直流控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)源為(wei)(wei)直流220V或(huo)110V，交(jiao)(jiao)流控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)源為(wei)(wei)交(jiao)(jiao)流380V或(huo)220V。

　　由(you)抽屜單元組成的成套柜(ju)。220V控(kong)制(zhi)電(dian)源(yuan)(yuan)引(yin)自本柜(ju)內專設控(kong)制(zhi)變壓(ya)器供(gong)電(dian)的公用(yong)控(kong)制(zhi)電(dian)源(yuan)(yuan)，公用(yong)控(kong)制(zhi)電(dian)源(yuan)(yuan)采用(yong)不接地方式控(kong)制(zhi)變壓(ya)器，留有24V電(dian)源(yuan)(yuan)供(gong)需要使(shi)用(yong)說電(dian)信號燈時采用(yong)。

　　電度表(biao)的(de)安裝地點電壓的(de)引進方法及(ji)其他安裝使(shi)用要求(qiu)。

　　母線

　　為提高母(mu)線動熱穩定能力和(he)改(gai)善接觸的升(sheng)溫，裝置全(quan)部采用(yong)TMY-T2系列銅排，銅排的連接部分必須搪(tang)錫，推薦采用(yong)全(quan)長搪(tang)錫，也可選用(yong)全(quan)長罐銀銅母(mu)線。

　　A)、水平母線

　　水平母線(xian)置于柜(ju)后母線(xian)隔離室內，3150A及以上(shang)為(wei)上(shang)下雙層布置，2500A及以下為(wei)單(dan)層布置，每相由4條或2條目排組成(cheng)，大大提高了母線(xian)的短(duan)路強度。裝置水平母線(xian)選用詳見表。

　　B)、垂直母線

　　用(yong)于抽屜(ti)柜的(de)垂直(zhi)母線(xian)采(cai)用(yong)“L”形搪(tang)錫母線(xian)

　　L型母(mu)線規格(mm)：(高X厚(hou))+(底X厚(hou))

　　(50×5)+(30x5)

　　額定電流1000A

　　C)、中(zhong)性接地母線

　　采用硬銅排，貫通水平中(zhong)性接地線(xian)(PEN或接地+中(zhong)性線(xian)PE)

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