電氣設(shè)備與電纜選擇要求規(guī)范

電氣設(shè)備與電纜選擇規(guī)一、開關(guān)的選擇(一) 一般要求：開關(guān)的短路保護(hù)應(yīng)在短路電流對(duì)導(dǎo)體和連接件產(chǎn)生的熱效應(yīng)和機(jī)械力之前分?jǐn)嘣撾娏鳌ｉ_關(guān)的過負(fù)載保護(hù)應(yīng)在過負(fù)載電流引起的導(dǎo)體溫升對(duì)導(dǎo)體的絕緣、接頭、端子或四周的物質(zhì)造成危害之前分?jǐn)嘣撨^負(fù)載電流。(二) 短路保護(hù)應(yīng)滿足的條件：分?jǐn)嗔α坎粦?yīng)小于保護(hù)電器安裝處的預(yù)期短路電流。應(yīng)在短路電流使導(dǎo)體到達(dá)允許的極限溫度之前分?jǐn)嘣摱搪冯娏?。保護(hù)電動(dòng)機(jī)時(shí)必需滿足電動(dòng)機(jī)的啟動(dòng)電流。(三) 過負(fù)載保護(hù)應(yīng)滿足的條件：分?jǐn)嚯妱?dòng)機(jī)電源。應(yīng)作用于信號(hào)而不應(yīng)作用于切斷電路。(四) 接地故障保護(hù)：1.當(dāng)發(fā)生帶電導(dǎo)體與外露可導(dǎo)電局部、裝置外可導(dǎo)電局部、PE線、PEN線、等之間的接故。(五)常用電動(dòng)機(jī)的額定參數(shù)表：型號(hào)額定功率型號(hào)額定功率額定電流轉(zhuǎn)速堵轉(zhuǎn)轉(zhuǎn)矩額定轉(zhuǎn)矩堵轉(zhuǎn)電流額定電流最大轉(zhuǎn)矩額定轉(zhuǎn)矩重量kWAr/min倍倍倍kgY80M1-20.751.828302.26.52.317Y80M2-21.12.528302.27.02.318Y90S-21.53.428402.27.02.322Y90L-22.24.828402.27.02.325Y100L-236.428802.27.02.334Y112M-248.228902.27.02.345Y132S1-25.511.129002.07.02.367Y132S2-27.51529002.07.02.372Y160M1-21121.829302.07.02.3115Y160M2-21529.429302.07.02.3125Y160L-218.535.529302.07.02.2145Y180M-22242.229402.07.02.2173Y200L1-23056.929502.07.02.2232Y200L2-23769.829502.07.02.2250Y225M-2458429702.07.02.2312Y250M-25510329702.07.02.2387Y80M1-40.551.513902.46.02.317Y80M2-40.75213902.36.02.317Y90S-41.12.714002.36.52.325Y90L-41.53.714002.36.52.326Y100L1-42.2514302.27.02.334Y100L2-436.814302.27.02.335Y112M-448.814402.27.02.347Y132S-45.511.614402.27.02.368Y132M-47.515.414402.27.02.379Y160M-41122.614602.27.02.3122Y160L-41530.314602.27.02.3142Y180M-418.535.914702.07.02.2174Y180L-42242.514702.07.02.2192Y200L-43056.814702.07.02.2253Y225S-43770.414801.97.02.2294Y225M-44584.214801.97.02.2327Y250M-45510314802.07.02.2381Y90S-60.752.39102.05.52.221Y90L-61.13.29102.05.52.224Y100L-61.549402.06.02.235Y112M-62.25.69402.06.02.245Y132S-637.29602.06.52.266Y132M1-649.49602.06.52.275Y132M2-65.512.69602.06.52.285Y160M-67.5179702.06.52.0116Y160L-61124.69702.06.52.0139Y180M-61531.49701.86.52.0182Y200L1-618.537.79701.86.52.0228Y200L2-62244.69801.86.52.0246Y225M-63059.59801.76.52.0294Y250M-637729801.86.52.0395Y280S-64585.49801.86.52.0505Y280M-6551049801.86.52.056Y132S-82.25.87102.05.52.066Y132M-837.77102.05.52.076Y160M1-849.97202.06.02.0105Y160M2-85.513.37202.06.02.0115Y160L-87.517.77202.05.52.0140Y180L-81124.87301.76.02.0180Y200L-81534.17301.86.02.0228Y225S-818.541.37301.76.02.0265Y225M-82247.67301.86.02.0296Y250M-830637301.86.02.0391Y280S-83778.27401.86.02.0500Y280M-84593.27401.86.02.0562Y315S-8551147401.66.52.0875Y2系列型號(hào)額定電流轉(zhuǎn)速kWAr/min倍倍倍Y2-63M1-20.180.528202.22.25.5Y2-63M2-20.250.728202.2.2.25.5Y2-71M1-20.371.028202.22.26.1Y2-71M2-20.551.428202.32.26.1Y2-80M1-20.751.828302.32.26.1Y2-80M2-21.12.628302.32.27.0Y2-90S-21.53.428402.32.27.0Y2-90L-22.24.928402.32.27.0Y2-100L-236.328802.32.27.5Y2-112M-248.128902.32.27.5Y2-132S1-25.511.029002.32.27.5Y2-132S2-27.514.929002.32.27.5Y2-160M1-21121.329302.32.27.5Y2-160M2-21538.829302.32.27.5Y2-160L-218.534.729302.32.27.5Y2-180M-22241.029402.32.07.5Y2-200L1-23055.529502.32.07.5Y2-200L2-23767.929502.32.07.5Y2-225M-24582.329602.32.07.5Y2-250M-255101.029702.32.07.5Y2-63M1-40.120.413702.22.14.4Y2-63M2-40.180.613702.22.14.4Y2-71M1-40.250.813802.22.15.2Y2-71M2-40.371.013802.22.15.2Y2-80M1-40.551.613902.32.45.2Y2-80M2-40.752.013902.32.36.0Y2-90S-41.12.914002.32.36.0Y2-90L-41.53.714002.32.36.0Y2-100L1-42.25.214302.32.37.0Y2-100L2-436.814302.32.37.0Y2-112M-448.814402.32.37.0Y2-132S-45.511.814402.32.37.0Y2-132M-47.515.614402.32.37.0Y2-160M-41122.314602.32.27.0Y2-160L-41530.114602.32.27.5Y2-180M-418.536.514702.32.27.5Y2-180L-42243.214702.32.27.5Y2-200L-43057.614702.32.27.2Y2-225S-43769.914752.32.27.2Y2-225M-44584.714752.32.27.2Y2-250M-455103.014802.32.27.2Y2-71M1-60.180.790021.94Y2-71M2-60.251.090021.94Y2-80M1-60.371.390021.94.7Y2-80M2-60.551.89002.11.94.7Y2-90S-60.752.39102.125.5Y2-90L-61.13.29102.125.5Y2-100L-61.53.99402.125.5Y2-112M-62.25.69402.126.5Y2-132S-637.49602.12.16.5Y2-132M1-649.89602.12.16.5Y2-132M2-65.512.99602.12.16.5Y2-160M-67.517.09702.126.5Y2-160L-61124.29702.126.5Y2-180M-61531.69702.127.0Y2-200L1-618.538.69802.12.17.0Y2-200L2-62244.79802.12.17.0Y2-225M-63059.39802.127.0Y2-250M-63771.09802.12.17.0Y2-280S-64585.99802.02.17.0Y2-280M-655104.79802.02.17.0Y2-80M1-80.180.97001.91.83.3Y2-80M2-80.251.27001.91.83.3Y2-90S-80.371.57001.91.84.0Y2-90L-80.552.27002.01.84.0Y2-100L1-80.752.47002.01.84.0Y2-100L2-81.13.47002.01.85.0Y2-112M-81.54.57102.01.85.0Y2-132S-82.26.07102.01.85.0Y2-132M-837.97102.01.86.0Y2-160M1-8410.37202.01.96.0Y2-160M2-85.513.67202.02.06.0Y2-160L-87.517.87202.02.06.0Y2-180L-81125.17302.02.06.6Y2-200L-81534.17302.02.06.6Y2-225S-818.541.47302.01.96.6Y2-225M-82247.47302.01.96.6Y2-250M-83064.07302.01.96.6Y2-280S-83777.87402.01.96.6Y2-280M-84594.17402.01.96.6Y2-315S-8551117402.01.86.6(六)

斷路器的選擇要求：1234DC型斷路器。5〔見附表。斷路器主要參數(shù)表400A和連接導(dǎo)線截面積額定電流額定電流A6380125160180、200、225250315、350 400導(dǎo)線截面導(dǎo)線截面積mm 1625507095120185240400A和連接導(dǎo)線截面積額定電流A銅導(dǎo)線或絕緣銅線數(shù)量截面積mm2銅母線數(shù)量截面積mm25002150230×56302185240×5700、8002240250×5型斷路器主要參數(shù)表型斷路器額定電流和連接導(dǎo)線截面積額定電流A≤68、1013、16、20253240、5063導(dǎo)線截面積mm11.52.5461016證不會(huì)引起事故的擴(kuò)大。熱繼電器的選擇：1得小于最大負(fù)荷時(shí)的實(shí)際電流。3對(duì)于保護(hù)主干線的開關(guān)，應(yīng)適當(dāng)考慮所掌握負(fù)載的同時(shí)運(yùn)行系數(shù)和電動(dòng)機(jī)的實(shí)際負(fù)載率。二、導(dǎo)線和電纜的選擇依據(jù)使用環(huán)境選擇電纜或?qū)Ь€型號(hào)聚氯乙烯絕緣聚氯乙烯護(hù)套電線,RVV銅芯聚氯乙烯絕緣聚氯乙烯護(hù)套軟電纜，且進(jìn)展1.5YQW輕型橡套軟電纜。電線、電纜不應(yīng)受力。2VV銅芯聚氯乙烯絕緣聚氯乙烯護(hù)套電線、電纜，BVV銅芯聚氯乙烯絕緣聚氯乙烯護(hù)套電線,或RVV銅芯聚氯乙烯絕緣聚氯1.5YQ3YQYZYC重型橡套軟電纜。YQW輕型橡套軟電纜，YZW中型橡套軟電纜，及YCW重型橡套軟電纜。4裂、松軟等特性。依據(jù)使用環(huán)境選擇電纜芯數(shù)瓦〕2芯電線、電纜，有特別要求的〔如需要接地線〕選3芯電纜。234N。且3N線應(yīng)盡量在同一處連接。如下示意圖所示。......

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........4芯電纜，嚴(yán)禁從其它線路N線。45NN線帶電。電線、電纜截面積的選擇1〔留意同時(shí)運(yùn)行不等于同時(shí)啟動(dòng)備比較多時(shí)要考慮設(shè)備的同時(shí)運(yùn)行系數(shù)和這些設(shè)備的負(fù)載率。另外還要考慮預(yù)留肯定的進(jìn)展空間和余量。器能夠準(zhǔn)時(shí)的斷開短路點(diǎn)，保證故障不會(huì)連續(xù)擴(kuò)大。因電壓過低燒毀設(shè)備〔為額定電壓的±%。85%。5室裝設(shè)依據(jù)室最熱月份的平均溫度進(jìn)展修正。附錄摘自《工業(yè)與民用配電設(shè)計(jì)手冊(cè)第三版》民用建筑電氣設(shè)計(jì)中室外線路電力電纜型號(hào)的選擇原則1規(guī)模較大的重要公共建筑亦宜承受銅芯電纜。護(hù)套電纜或帶外護(hù)層的鉛〔鋁〕包電纜?！陈竦胤笤O(shè)電纜時(shí)，應(yīng)承受〔如預(yù)留電纜長(zhǎng)度，用板樁或排樁加固土壤等〕消退因電纜位移作用在電纜上的應(yīng)力。防腐型電纜或?qū)嵭蟹乐闺s散電流腐蝕電纜的措施。5裸鉛〔鋁〕包電纜或阻燃塑料護(hù)套電纜。78910、室明敷的電纜，宜承受裸鎧裝電纜，當(dāng)敷設(shè)與無機(jī)械損傷及鼠害的場(chǎng)所，允許承受非鎧裝電纜。11、沿高層或大型民用建筑的電纜溝道，隧道、夾層、豎井、室橋架和吊頂敷設(shè)的電纜，其絕緣或護(hù)套應(yīng)具有非延燃性。12、三相四線制系統(tǒng)中應(yīng)承受四芯電力電纜，不應(yīng)承受三芯電纜另加一根單芯電纜或以導(dǎo)〔當(dāng)三相負(fù)荷不平衡時(shí)，相當(dāng)于單芯電纜的運(yùn)行狀態(tài)，簡(jiǎn)潔電能損失。對(duì)于鎧裝電纜，還會(huì)加速金屬護(hù)套和鎧裝層的腐蝕〕13、

在三相系統(tǒng)中，不得將三芯電纜中的一芯接地。附表6 300/300V YQ、YQW輕型橡套軟電纜規(guī)格及載流量芯數(shù)*芯數(shù)*mm22*0.32*0.53*0.33*0.5環(huán)境溫度環(huán)境溫度25℃下的載流量〔A〕7116925℃*25℃*(mm2)*面(mm2)環(huán)境溫度25℃下的載芯數(shù)*面(mm2)環(huán)境溫度25〔A〕〔A〕流量〔A〕2*0.75143*0.75124*0.75112*1173*1144*1132*1.5213*1.5184*1.5172*2.5303*2.5254*2.5242*4413*4354*4342*6533*6454*644四芯三大一小構(gòu)造3*1.5+1*1.0185*0.75105*4333*2.5+1*1.5255*1.0125*6433*4+1*2.5355*1.5173*6+1*4455*2.521附表8 450/750V YC、YCW重型橡套軟電纜規(guī)格及載流量芯數(shù)***芯數(shù)*截面25℃下的載截面25℃下的載截面25℃下的載截面25℃下的載(mm2)流量〔A〕(mm2)〔A〕(mm2)流量〔A〕(mm2)流量〔A〕1*1.5302*1.5243*1.5214*1.5201*2.5372*2.5303*2.5264*2.5261*4472*4393*4344*4331*6522*6513*6434*6431*10752*10743*10634*10821*161122*16983*16844*161131*251482*251353*251154*251401*351832*351673*351424*351721*502262*502083*501764*501961*702892*702593*702244*702201*953532*953183*952734*952701*1204153*1203164*1203101*1504833*1503604*1503511*1855451*2406701*3007831*400955四芯三大一小構(gòu)造*環(huán)境溫度芯數(shù)*環(huán)境溫度25℃芯數(shù)*環(huán)境溫度(mm2)〔A〕(mm2)〔A〕面(mm2)25℃下的載流量〔A〕3*2.5+1*1.5273*70+1*252245*1.5193*4+1*2.5343*95+1*352735*2.5253*6+1*4443*120+1*353165*4323*10+1*6633*150+1*503605*6433*25+1*10845*10803*35+1*101165*161133*50+1*161435*25140附表9 塑料絕緣電線長(zhǎng)期連續(xù)負(fù)荷載流量(A)(線芯長(zhǎng)期允許工作溫度四周環(huán)境溫度標(biāo)稱設(shè)穿標(biāo)稱設(shè)穿鐵管穿塑料管截面234234(mm2)銅鋁銅鋁銅鋁銅鋁銅鋁銅鋁銅鋁0.7516-------------1.020-16-15-13-15-14-12-1.525192116201519122116181417132.534263021272125182822251923164453540303527332537293325302365643524045364234503643343930108566735363485641685159455340161138791737961745585657658685325146112120911087895731108399738868351801391511111301011168613810312094109835022517318614116012814511117013015011513510470287220228176205156182140210160190147170130953502542752132451922201702601952