Representationofelectricaldiagram电气图连接线表示方法

Representationofelectricaldiagramconnectionlines电气图连接线的表示方法《工程识图与电气CAD》EngineeringDrawingReadingAndElectricCADTeachingResourcesDatabaseofNationalVocationalEducationPowerSupplyTechnologyBilingualCourses课程负责人：苏晓兰陈忠Courseleader:SuXiaolanChenzhong目录

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CONTENTS01/连接线的表示方法Representationofconnectionlines课程负责人：苏晓兰陈忠Courseleader:SuXiaolanChenzhongCharacteristicsofelectricaldiagram电气图的特点1.Representationofconnectionlines连接线的表示方法单线表示法Single-linerepresentation连续线表示法Continuouslinerepresentation中断线表示法Breaklinerepresentation多线表示法Multilinerepresentation连续线表示法Continuouslinerepresentation中断线表示法Breaklinerepresentation3.Representationofconnectionlines连接线的表示方法单根导线表示:两根或两根以上的连接线或导线在图上只用一条图线表示Single-wirerepresentation:twoormoreconnectinglinesorwiresarerepresentedbyasinglelineonthediagramCharacteristicsofelectricaldiagram电气图的特点3.Representationofconnectionlines连接线的表示方法单根导线的表Atableofsingle-wire（水平）Horizontal一根导线Onewire（竖直）Vertical二线交叉（不联接）Twowirecrossings(notconnected（二线交叉联接）（单边连接）Unilateralconnection（正确画法)Right（错误画法）Wrong导线暗敷wireisinside导线明敷wireisonthesurfaceTwowirescross(notconnected)TwowirescrossconnectionCharacteristicsofelectricaldiagram电气图的特点3.Representationofconnectionlines连接线的表示方法多根导线表示:每根连接线或导线各用一条图线表示Multiplewirerepresentation:eachconnectinglineorwireisrepresentedbyagraphlineCharacteristicsofelectricaldiagram电气图的特点3.Representationofconnectionlines连接线的表示方法多根导线表示:

每根连接线或导线各用一条图线表示Multiplewirerepresentation:eachconnectinglineorwireisrepresentedbyagraphline3（三根导线）3wiresL1L2L3水平三根线从竖直三根线分别连接引出Threehorizontallinesarerespectivelyconnectedfromthreeverticallines水平三根线与竖直三根线交叉但不连接ThreehorizontalwirescrossbutdonotconnectwiththreeverticalwiresCharacteristicsofelectricaldiagram电气图的特点3.Representationofconnectionlines连接线的表示方法单线和多线表示法:在同一图中，必要时单线表示法和多线表示法可组合使用。Single-lineandmulti-linerepresentation:single-lineandmulti-linerepresentationcanbecombinedifnecessaryinthesamediagramCharacteristicsofelectricaldiagram电气图的特点3.Representationofconnectionlines连接线的表示方法中断线法

BreaklinerepresentationCharacteristicsofelectricaldiagram电气图的特点3.Representationofconnectionlines连接线的表示方法中断线法Breaklinerepresentation连接线中断可用于以下三种情况：Connectionlinebreakingcanbeusedinoneofthreesituations（1）当穿越图面的连接线较长或穿越稠密区域时，允许将连接线中断，且在中断处加相应标记。Whentheconnectinglineacrossthedrawingsurfaceislongorthroughaserriedarea,itisallowedtobreaktheconnectingline,andthecorrespondingmarkisaddedatthebreakingpoint.（2）去向相同的线组，可中断，且在中断处加适当标记。Connectionlinesgoingtothesamegroupofwirescouldbreakandweshouldappropriatelymarkatthebreakingpoint（3）连接到另一张图上的连接线，应中断，且在中断处注明图号、张次、图幅分区代号等标记。Theconnectinglineconnectedtoanotherdrawingshouldbebrokenandmarkedwithdrawingnumber,sheetnumber,mappartitioncodeandothermarksatthebreakingpoint.Characteristic