电缆截面载流量对照表

电缆截面载流量对照 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 序号洞电线型号单心载疣量t25nC)0)电压降mv/fil品字型电压隆蜓按一字型电压降mv/M间距一字型电压降mv/fil两心我流量C25-C)a)电压降nw/M三业载疣量C25=C3a)电压降nv/M四柱载流量025nC0)电压降mv/Ma.^50.850.7msYJYEEYYZ27JVZ2YJVZ2W2ZYJYZ211.5mm2/c202530.5626.7326.7326.T3161613IS30.S6131330.S622.Brrim2/c2S35IS.91S.9IS.9IS.92335is.9IS2218.9IS30IS.934nim乂/c305011.7611.7B11.7611.T&294511.7S243211.762E3211.7S4Grrirri2/c43&07.SBT.867.SB7.8&3SE87.SB32417.8633427.865lOmrTi2Zc&5054.674.044.044.0553B24.&T455E4.&747564.676lEmm2/c881102.952.552.562.55721112.961752.&65802.6T25mm2/c1131571.8T1.621.621.B3971451.9851051.&861081.6835mm2/c1421921.351.IT1.LT1.191201801.31051301.Z1081301.2950mm2/c1T1Z321.010.870.880.914022011241550.8T137165□.8710TOmni2/c£18£940.71aci0.620.651802850.T1602050.&1176220□.61112/c£653550.5£a.450.450.52503500.522012480.45217265□.4512120mm2/c3054100.430.370.3S0.422704250.42235驱C.362533100.3613ISOmm2Jc35547S0.3B0.320.330.373104850.35275343C.3曲Ci3600.314185rTirn2丿c4105500.30.2S0.230.333B0ESO0.293234000.25333415□.251524LlrrirTi2./c490&600.25a.220.240.294306500.243814S00.21400495□.2116BClUnini2y1c5G07500.22a.20.210.285007000.214405400.19467530□.1917400riim2/c&50S800.2a.it0.20.2&6008200.1918500mm2/c75010000.19a.is0.180.2519530mm2/c38011000.18a.is0.LT0.2520300mm2/c110013000.ITa.is0.170.2421lOOQmm2/=130QK0Q0.1&J.140.1600序号胡电线型号单心我蹄量(25BC)(A〕电压降mv/fil品宁型电压降mv/閘紧按一字型电压降mv/M司距一字型电压降mv.r1M两怙載流量(25BC)(A)电压降fTlV/'fl三心载流量电压降(25bC)(A)my/M四怙载流量电压降(25BC(A.)mv/M0.^50.850.7WTJVY¥IJVwrjvWYJV11.Snim2/'c202530.SB26.732B.732C.73161613IS30.SB131330.se22.EfTim2.i1'c2B3518.9is.gIB.9le.g233518.9IS2218.gIB30IB.934mni2Jc3B5011.7611.7611.7611.T&343B11.76233411.762B4011.7641mmZ/c48B0T.8&T.8BT.86T.8&4055T.8&3240T8635557.86510mm2/c65854.6T4.044.044.0555754.6T45554.6748804.&7616mm2/c901102.952.552.562.55701082.960752.665652.&T25mm2/c1151501.8T1.621.621.631001401.93010016661051.&835mm2/c145ISO1.351.171.171.1?1251751.31051301.21Q813Q1.2950mm2/c1702301.Q10.670.S30.91452101ISO1600.3713S1650.37TlJnini2/c2202850.710610.B20.651902650.7L&52:1C0.611752100.Bl1195rim2?c2B03500.52a.450.450.52303300.522002600.4E2202B00.4512120rrifTi2.i'1c3004100.43a.370.330.422704100.422353000.362553000.3B13ISOirih2/c3504800.3&a.320.330.3T3104700.352T5350□.33403B00.314185mm2/c4105400.3a.260.280.333605700.29320410□.254004150.Z515Z40mm2fc4806400.25a.220.240.294306500.24390485□.214704950.Z11&300mm2/c5607400.22a.20.210.285007000.214505600.135005800.19IT^OOmm2Zc65JS300.2J.ITO.E0.2&6DQ船00.1918^IJIJnim2/c75010000.19Q.150.IS0.2519E-30rrifTi2y1cBBO11000.18a.is0.170.2520ESUOnini2.i'1c110013000.ITa.is0.170.2421lODOmm2/cl30014000.1&a.140.160.24电线电缆截流量的速算法在供配电系统中,电线电缆的作用是传输电流，联络供电点(变电所或配电箱)与用电设备之间的桥梁•正确选择电线电缆是保证负载可靠运行的重要环节.若选择电线电缆的截面积过小而负荷电流超载运行时，则会引起电线电缆表面温升加快，使绝缘层过热，导致事故的发生•若选择电线电缆的截面积过大，则会造成浪费,使投资增加.电线电缆的栽流量取决于本身的构造形式，周围环境条件和敷设方式■电线电缆从材质上分为铜芯线和铝芯线，从绝缘上分为橡皮绝缘，塑料绝缘，塑料护套及铠装等形式•其敷设方式有明设和暗设(穿金属管或塑料管)•可见电线电缆的载流量，除自身条件外，还要随外界条件的变化而改变:当环境温度升高时，载流量要减少;暗敷设比明敷设的载流量要降低;多根共管敷设时，根数越多,载流量越小;而相同截面积的铝线要比铜线的载流量小一级,等等.在配电设计和施工中，如何快速检验电线电缆截面积能否满足计算负荷电流的 要求 对教师党员的评价套管和固井爆破片与爆破装置仓库管理基本要求三甲医院都需要复审吗 ，采用速算法可做到心中有数，有错必纠，避免返工和事故的发生.本文介绍截面积1.5〜185mm2的电线电缆速算法.速算法速算法是以计算标称截面积的载流量为基础的■速算表达公式为IN=K1K2K3K4aS式中:IN――电线电缆的速算载流量,A;S——线缆标称截面积,mm2;a——速算电流系数，见附表,A/mm2;K1――温升折算系数，环境温度为25r时,K1为1,当超过30°C时,九折；K2――导线折算系数，铜线K2为1,塑料铝线九五折；K3――管质折算系数，穿钢管K3为1,穿塑料管八五折■因穿塑料管后,散热差，故需打折；K4――穿线共管折算系数,明敷设K4为1,穿2,3根七五折,4根共管为六折.截面积S(mm2)185,150120,95705035251610642.51.5电流系数a(A/mm2)33.544.556789101418举例［例1］已知橡皮绝缘铜线50mm2;架空进户，环境温度为25C,求其载流量■若改用塑料铝线时，载流量又为多少解：(1)橡皮绝缘铜线：a=4.5,K1=K2=K3=K4=1.则IN=4.5x50=225(A)查手册，橡皮绝缘铜线的载流量为230A.(2)塑料铝线:若改用塑料铝线,K2=0.95,其计算公式为IN/=0.95IN=0.95x225=214(A)查手册，塑料绝缘50mm2铝电线的载流量为215A.［例2］上题中环境温度为30C,架空进户,求其载流量;从横担引入室内配电箱穿钢管保护，这时电线的载流量又为多少如果改用橡皮铝芯线，其截面积应为多少解:⑴环境温度为30°C:K1=0.9，则IN'=0.9x225=202.5(A)查手册，环境温度为30C时，载流量为215A.4根钢管保护:K4=0.6,折算电流为IN〃=0.6x225=135(A)查手册,4根电线穿钢管时，载流量为137A.改用铝芯橡皮线:若要使其载流量保持不变，则橡皮铝芯线应比铜线大一级，选70mm2即可.就看看*2-23全EM｛环風迟戾第I)Altt践W彊服号皇旳显号则号TIU$0I.J1ft7&E.GJ-35TJ-#LMB1肿jLGJ-5a220T卜过IJELOLG|.?&2?^TJ-UtooFJ^5170135!⑷卜箱林T卜2S11W£J-弭215170|lGM2D390TJ-35220ITSLJ-70Z65S15IlgI-JM]!J45TJ-弭Lj-55踽缈51SLJ-1K310血H-701J-HCU0370；LSMT]啲U-1S5425g-他TJ-JJD烟【』苗06?QTJJ50570IJ-3-Ofl!,GJ-4OOTJ-181150LJ•他S3CLGJ-50077CILJ-MG辆1I.GJ-5W1倾ij-mIJ-625114«畑t&3SLGJ-iftO8S-0*224乙烟■心软It及第心圾的70C杂件下，空气稅空敌设的負倉*・住设卄难用时.对手1・0圖川以下的小徽他・QWB4*«HiW£E降和机械找度.不同环境■度时的績■■修正癢敬环塢澄度/C51015202550354045BiE«*1.2MS1.111.0510.940.850.810.74*2-17蛊料电拔娈全戴濾■（单位=A）*2-25BVVft^BLVV型JR■乙制6线、UK乙心及铝心#«#<0潦・\ra标称越介、、/mm'BVVBLVV冷芯JO.Z三若♦芯取t三若10?0】G13i$1210l.S2$2116}9K122.5U26222622174.0<53»2$3529235.05143333933266・056472C433&288.070594654453510-08572$5665$43*226RVZfiXM乙烯給HLUAL乙刑护的"■。漬・、、參考栽泣、*/A标赤敌#1、/mm-二芯Z芯1.C0161313L5Q2116162.002419192.SO2622223.002826264.0038?929S.oo433333&oo47X636标鮮At面7mms阴毀敷设穿晉敷设护套线矗三很»二芯三及四芯铝Kfi«協ffi铝623320-3&L536476$65&化55臥108,560-11210S0-3151L5ID[18IS141314HL5221719131«121511UU)2IQ226so)51713151Z2016H122-530闆2Q2519231722汁19153-32■U?922272025152521221744。3039293325SO2333£525?oS453』315728詔25372822aAt穿ffa®护套线■WWan妙■h-^fk■■篁面二屜三枫四芯三麦西茜Zmraa«铝「帽雷H£fflffi■H|E6so3944344131372841:3\哉34«;歸*B55434兮394334St4030:S56S515G424937fi3!4S183?]{*075805172S524911110£5907080657456■12&13010013192“2*92$012311854663593332S734526624Q$53血392矽$3006-321864W7鎭铃7$90晴2677625心2祁9800120*注J】•甘我量离允许31度6^Cr空气中融设，环验沼度25Ci2.草芯电褰电規不用于交*««＞裂列为Hit«y«yt2-32金(«.fg)ttmi：OOftfiS/mm厳丸允怖电流/A/mm■大九许电涼/A«叫«»eS613511>51653542<17170皿186354M82051W19伯5S3010280215207355701336S2&0217906101444534522840650154953匆251005780注，叢中量大允许电浚・为70C.删用空气41厦为押C・如果实际空气《1攻不是33C.金K«l粳的敷MIS*以下炭中的校正累敦・周厦空弋赳度/C510115202530枚正豪數1.3613111.2$LZO1.131.07幅厲空代unr/e3S401,05S&正簾数1.000・930.850.760・&6«2J3尊线量髙允详廻度i殆境潟廈々/U/1/C一50+5+10+15420+701291.24L21.1SLIS1.05+902.141.9S1.141.111.071.04导拔■翦允许風度+25+30+35+4G+45+50+7010.940,880⑻0.740.67+901G.960・帥5貼0.$30・79<2-35大输迭鉅育和微閒选择年最大负猶小时数巾经溶电海/aw上552I.MSo.»sr三.电力电缆的选择1・电規选择的-展舉则电缆的额定电伍專于或大于所在网掛的额定电压，电黒的最滿工作电圧不得趙过其粽定电圧的】5%・在移动或剧烈按动的场所选择制芯电規•一般悄况下采用個芯电鲍。汕!歳设血电境曲説轲內鰹电藐.庄选用裡牠装韭還戏铭包燥塑料护蠶腿缆・N）曲爍电親采用帯护黑的觉轻电饥張馆包棵塹料护葺电駆.估）估动机械采用畫魁象舔电纵，训）御楝性±4[—股革珪电3L晋剖应采用待殊的肪嵐护套电9L｛门毎直或血堇较喪宦魁瓒电媳.应述舟不滴直电瓠f斛歼览程度超过*「ihT：宜采阳稼皮凳暑胞城*我拦轴示出电力电理甘品甘和劈号聂2-關社詔常用电徴的臺番*馆娃及使用桂ELE.电塩融谀的--些鋭宣（"电建勾鵜力膏谊臭冥他卷迪之闻库鞘一建更离,區慕时应有碍热楷嵐.平轩吋宴束距需为辺罠时为讥$m.C2）电地奁埋球黄尺扫互?F與（3）竄埠探庚1-35kV电缱直◎禅度不小于讥了rm^kVtl上也燒彊埋憲度耶协于1即・醪电缆同净业I^VU上电期净堑不小于£，T10—35kVEfe醴间卄示小于4鈴皿匕③电鞫护互交異对的赛离不小于氏5皿*（3）业境帕喲尤许寺曲丰轻