Electrical Graphic Symbol 电气图形符号

ElectricalGraphicSymbol电气图形符号《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/图形符号的构成Thecompositionofgraphicsymbols02/一般符号Generalsymbol03/符号要素Symbolicelements04/限定符号Qualifyingsymbol05/图形符号的种类Typesofgraphicsymbols06/注意事项Precautions课程负责人：苏晓兰陈忠Courseleader:SuXiaolanChenzhongElectricalGraphicSymbol电气图形符号12图形符号的构成Thecompositionofgraphicsymbols图形符号的种类Typesofgraphicsymbols04-框形符号Boxsymbols1.Thecompositionofgraphicsymbols图形符号的构成03-限定符号Qualifyingsymbol01-一般符号Generalsymbol02-符号要素SymbolicelementsElectricalGraphicSymbol电气图形符号1电气图形符号ElectricalGraphicSymbol由一般符号、符号要素、限定符号、方框符号组成。Itiscomposedofgeneralsymbol,symbolelement,qualifyingsymbolandboxsymbol.ElectricalGraphicSymbol电气图形符号1.Thecompositionofgraphicsymbols图形符号的构成1ClicktoaddTitle用以表示一类产品和此类产品特征的一种通常很简单的符号。Itisausuallysimplesymbolusedtodenoteaclassofproductsandthecharacteristicsofsuchproducts.12.Generalsymbol

一般符号ElectricalGraphicSymbol电气图形符号Switch(mechanical)electricalgraphicsymbol1ClicktoaddTitle是一种具有确定意义的简单图形，不能单独使用。它必须同其它图形组合后才能构成一个设备或概念的完整符号。Itisasimple,defininggraphicthatcannotbeusedalone.Itmustbecombinedwithothergraphicstoformacompletesymbolofadeviceorconcept.3.Symbolicelements

符号要素符号要素Symbolicelements真空二极管真空三极管ElectricalGraphicSymbol电气图形符号shellandtubecathodeanodegridelectrodevacuumdiodevacuumtriode1ClicktoaddTitle1用以提供附加信息的一种加在其它符号上的符号，通常它不能单独使用。Itisasymbolthatisusedtoprovideadditionalinformationandisaddedtoothersymbols,usuallynotusedalone.系统图中的整流器符号Therectifiersymbolinthesystemdiagram4.Qualifyingsymbol

限定符号ElectricalGraphicSymbol电气图形符号1ClicktoaddTitle1用以表示元件、设备等的组合及其功能的一种简单图形符号。既不给出元件、设备的细节，也不考虑所有连接。Itisasimplegraphicsymbolusedtorepresentthecombinationofcomponents,equipment,etc.andtheirfunctions.Thedetailsofthecomponentsandequipmentarenotgiven,norareallconnectionsconsidered.整流器的框形符号Theboxsymbolofarectifier5.Boxsymbols

框形符号ElectricalGraphicSymbol电气图形符号1ClicktoaddTitle导线和连接器件Wiresandconnectingdevices无源元件Passivecomponent半导体管和电子管Semiconductortubesandelectronictubes电能的发生和转换Occurrenceandconversionofelectricalenergy开关、控制和保护装置Switching,controlandprotectiondevices测量仪表、灯和信号器件Measuringinstruments,lampsandsignaldevices电信交换和外围设备Telecommunicationsswitchingandperipherals电信传输Telecommunicationstransmission电力、照明和电信布置Electrical,lightingandtelecommunicationsarrangements二进制逻辑单元Binarylogicunit模拟单元灯符号Simulatetheunitlightsymbol6.Typesofgraphicsymbols

图形符号的种类图形符号的分类，主要有11类Thisistheclassificationofgraphicsymbols,thereare11mainclassesElectricalGraphicSymbol电气图形符号ClicktoaddTitle常见电气图形符号，如表所示。Commonelectricalgraphicsymbols,asshowninthetable.ElectricalGraphicSymbol电气图形符号6.Typesofgraphicsymbols

图形符号的种类图片翻译见下页DC(directcurrent)AC(alternatingcurrent)HeatingeffectGroundinggeneralsymbolIsoelectriclevelTerminal(Oryoucoulddrawitasaroundblackdot)Terminalblock(youcanaddthemarkofterminal)ConnectionofwiresConnectionof

multiwireOutlet(innerhole)

oronepoleofoutletPlug(convexhead)oronepoleofplugPlugandoutlet(convexheadandoutlet)ResistorCapacitorGeneralsymbolofmotorstarterRelaydiagramThermalrelaydrivedeviceSPSTNOSPSTNCSPDT(Breakandthenclosetransfercontacts)HandoperatedswitchNormallyopenbuttonNormallyclosedbuttonSPSTNCofthermalrelayCircuitinterrupterRangeswitchTwo-waydisconnectingswitchwithanintermediatedisconnectingpositionStar-trianglestarterElectricalGraphicSymbol电气图形符号AlternatorSCIM(3-phasesquirrel-cageinductionmotor)Two-circuittransformerThree-windingtransformerCT(currenttransformer)PT(potentialtransformer)ElectricreactorArresterFuseSparkgapWire/Cable/BusbarFlexiblewireLoadswitchNPNtypesemiconductortriodeVoltmeterAmperemeterPW/PPAPR/PPRPower-factorindicatorPF/FrequencymeterBuzzerAlarmapparatusDiodeBidirectionaldiodeLightemittingdiodePNPsemiconductortriodeElectricalGraphicSymbol电气图形符号图形符号应按无电压、无外力作用时的原始状态绘制。Graphicsymbolsshouldbedrawnintheiroriginalstatewhenthereisnovoltageandnoexternalforces.17.Precautions

注意事项ElectricalGraphicSymbol电气图形符号2ElectricalGraphicSymbol电气图形符号7.Precautions

注意事项图形符号可根据图面布置的需要缩小或放大，但各个符号之间及符号本身的比例应保持不变，同一张图纸上的图形符号的大小应一致，线条的粗细应一致。Graphicsymbolscanbereducedorenlargedaccordingtotheneedsofthelayoutofthesurface,buttheproportionsbetweeneachsymbolandthesymbolitselfshouldremainthesame,onthesamesheetofpaper,thesizeofthegraphicsymbolsshouldbeconsistent,thethicknessofthelinesshouldbeconsistent.3ElectricalGraphicSymbol电气图形符号7.Precautions

注意事项图形符号的方位不是强制的，在不改变符号含义的前提下，可根据图面布置的需要旋转或成镜像放置，但文字和指示方向不得倒置。Thepositionofthegraphicsymbolisnotmandatory.Underthepremiseofnotchangingthemeaningofthesymbol,accordingtothe