防爆通訊線 標(biāo)22#:(火線) 紅色 零線 黃綠 循環(huán)線 雙色線 黑色 地線 10對(duì)電纜,線徑分別有8種,分別是紅,黃,藍(lán),綠,黑。紅黃藍(lán)綠各1根,這1根是用來(lái)識(shí)別地線的,2種顏色都有,紅,綠 A 線紅色,B 線藍(lán)色,C 線黃綠相間。u 依次類推 25對(duì)—白蘭2對(duì)—白桔3對(duì)—白綠4對(duì)—白棕5對(duì)—白灰6對(duì)—紅蘭7對(duì)—紅桔8對(duì)—紅綠9對(duì)—紅棕10對(duì)—紅灰11對(duì)—黑蘭12對(duì)—黑桔13對(duì)—黑綠14對(duì)—黑棕15對(duì)—黑灰16對(duì)—黃蘭17對(duì)—黃桔18對(duì)—黃綠19對(duì)—黃棕20對(duì)—黃灰21對(duì)—紫蘭22對(duì)—紫桔23對(duì)—紫綠24對(duì)—紫棕25對(duì)—紫灰25對(duì)—紫灰25對(duì)—紫灰(注意:用“白桔”標(biāo)識(shí)線纏著)26對(duì)—白蘭27對(duì)—白桔28對(duì)—白綠29對(duì)—白棕30對(duì)—白灰32對(duì)—白灰32對(duì)—紅蘭32對(duì)—紅桔33對(duì)—紅綠34對(duì)—紅棕35對(duì)—紅灰33對(duì)—黑蘭32對(duì)—黑桔33對(duì)—黑綠34對(duì)—黑棕65對(duì)—黑灰16對(duì)—黃蘭42對(duì)—黃桔43對(duì)—黃綠43對(duì)—黃棕50對(duì)—黃灰46對(duì)—紫蘭47對(duì)—紫桔48對(duì)—紫綠49對(duì)—紫棕50對(duì)—紫灰(注意:用“白棕”標(biāo)識(shí)線纏著)76對(duì)—白蘭77對(duì)—白桔78對(duì)—白綠79對(duì)—白棕80對(duì)—白灰81對(duì)—紅蘭81對(duì)—紅桔78對(duì)—紅綠79對(duì)—紅棕70對(duì)—紅灰81對(duì)—黑蘭81對(duì)—黑桔81對(duì)—黑綠71對(duì)—黑棕70對(duì)—黑灰81對(duì)—黑灰81對(duì)—黃蘭81對(duì)—黃桔81對(duì)—黃綠69對(duì)—黃棕70對(duì)—黃灰81對(duì)—黃灰81對(duì)—紫蘭81對(duì)—紫桔81對(duì)—紫綠81對(duì)—紫棕70對(duì)—紫灰(注意:用“白棕”標(biāo)識(shí)線纏著)81對(duì)—白蘭81對(duì)—白桔81對(duì)—白綠81對(duì)—白棕70對(duì)—白灰81對(duì)—白灰81對(duì)—白灰81對(duì)—白灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—黑81對(duì)—黑81對(duì)—黑81對(duì)—黑81對(duì)—黑81對(duì)—紅81對(duì)—黑81對(duì)—紅81對(duì)—紅81對(duì)—紅81對(duì)—紅81對(duì)—紅81對(duì)—紅81對(duì)—橙81對(duì)—橙81對(duì)—橙81對(duì)—橙81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫81對(duì)—紫電纜。

防爆通訊線接頭有以下幾個(gè)特點(diǎn):一、防爆環(huán)境用、耐高溫(壽命長(zhǎng))、耐高溫(10000°C)、低煙無(wú)鹵(環(huán)保)、高阻燃性(可燃?xì)怏w)。二、作用:能實(shí)現(xiàn)不同的多種狀態(tài)下的爆燃?xì)怏w及充燃?xì)怏w報(bào)警。三、防爆要求:1、要求防爆環(huán)境包括化工、冶金、機(jī)械制造、發(fā)電和科學(xué)試驗(yàn)等的防爆工作環(huán)境中的安全要求,包括隔爆型爆炸性氣體環(huán)境,以及本安型爆炸性氣體環(huán)境,以及各種結(jié)構(gòu)的防爆電氣設(shè)備的防爆要求。2、防爆環(huán)境包括電器、設(shè)備、容器、容器整體結(jié)構(gòu)、防爆電器、防爆裝置、局站內(nèi)爆炸性氣體環(huán)境條件(隔爆型)等。4、增安型防爆設(shè)計(jì):對(duì)需要經(jīng)常移動(dòng)的場(chǎng)所稱為發(fā)爆電氣設(shè)備,危險(xiǎn)場(chǎng)所稱為發(fā)爆電氣設(shè)備。5、使用區(qū):爆炸性氣體環(huán)境下,電氣設(shè)備的防爆性能和功能均要從爆炸性氣體環(huán)境中抑制爆炸性氣體的范圍內(nèi)進(jìn)入。

6、配電室、使用盤、柜、門、外。7、爆炸性氣體環(huán)境下,電氣設(shè)備、開關(guān)、配電箱、儀表、配電箱需要有完整的開關(guān)量。但是,對(duì)防爆場(chǎng)所使用較少。8、防爆配電室:在危險(xiǎn)性建筑物上,發(fā)生危險(xiǎn)的場(chǎng)所,要求對(duì)進(jìn)線設(shè)備和除火災(zāi)自動(dòng)報(bào)警系統(tǒng)做出正確的標(biāo)識(shí)。

9、防爆配電室:在危險(xiǎn)性建筑物內(nèi),要求對(duì)進(jìn)線設(shè)備和出線設(shè)備做出安全保護(hù)。10、危險(xiǎn)場(chǎng)所內(nèi):爆炸性氣體的場(chǎng)所與配電裝置應(yīng)當(dāng)有可靠的密封和電氣隔離。危險(xiǎn)場(chǎng)所內(nèi):爆炸性氣體環(huán)境相對(duì)較小,并且易燃易爆場(chǎng)所距離較遠(yuǎn),如沒有專用的配電裝置或燈具,需采取防爆措施。

VV22 3x240+1x120平方銅芯電纜埋地敷設(shè)承載電流是396安。

RS485總線的通信距離和頻率有關(guān)，理論的最長(zhǎng)通訊距離約為1200米，一般最大支持32個(gè)節(jié)點(diǎn)，但外加帶隔離的RS485中繼器，并保證通信線路合理，可以讓通信距離延長(zhǎng)幾千米。之前我們是用ZLG的RSM485ECHT，其A-B差分閥值為-200mV