一．电气名词 Electric items二．二．线路（母线、回路）Lines (Bus, circuits)三．三．设备 Equipment四．四．保护、继电器 Protection, relays五．五．电气仪表 Electric instruments六．六．防雷 Lightning protection七．七．接地 Grounding, earthing八．八．室、所 Room, Substation九．九．电修车间设备 Equipment of electric repair room十．十．材料 Material十一．十一．图名 Drawings, diagrams十二．十二．表头 TablesTerms from standard DWG十三．十三．标准图词汇．线路电压 Line voltage 电气名词 Electric items一．电压降 Voltage drop 交（直）流 Alternating (direct) current工作电压 Working voltage 短路电流 Short-circuit current一次电压 Initial subtransient Primary voltage 起始次暂态短路电流二次电压 Secondary voltageshort-circuit current电源 Electric source (power supply) 冲击/脉冲电流 Impulse current自控电压 Power supply for process control 稳态短路电流 Steady state short-circuit6kV控制闪光电源 Flashing supply for 6kV currentcontrol临界电流 Critical current工作电源 Working power supply (electric 切断电流 Rupturing currentsource)Blow-out current 熔断电流保安电源 Fault current Emergency power supply (electric 故障电流source)Calculating current 计算电流直流稳压电源 Limit effective current Stabilized D.C. source 极限有限电流控制电源 Control supply 过电流 Over current直流电源 D.C. source 逆电流 Inverse current交流电源 A.C. source 整定电流 Setting current负荷计算 Load calculation 额定电流 Rated current设备容量电流密度 Current densityInstalled capacity需要容量effective Maximum value Electric demand of 短路电流最大有效值功率因数 Power factor short-circuit current安装高度 Mounting height 高压 High-voltage , High-tension耐电压 Low-voltage , Low-tension Withstand voltage 低压击穿电压 Calculating voltage Breakdown voltage 计算电压工频耐压 Working frequency withstand voltage 激磁电压 Exciting voltage表面闪络冲击电压 Impulse voltage Surface flash-over直流泄漏临界电压 Critical voltage D.C. leakage体电阻率残留电压 Residual voltage Volume resistivity介质损失角 Puncture voltage Dielectric loss angle 击穿电压击穿强度 Breakdown/Puncture intensity Pulsating voltage 脉动电压电压等级 Voltage grade 供电电压 Supply voltage比重 Power voltage 电力电压 Specific gravity性能照明电压 Lighting voltage Feature相序 Phase sequence Filament voltage 灯丝电压瞬时额定电压 Rated voltage Instantaneous倾角电压损失 Angle of inclination Voltage lossSpan跨度 Over (under) voltage电压)欠(过．电压干线正极 Positive pole Voltage main line端子出线负极 Negative poleTerminal outgoing中性线截面(积) Cross section area Neutral支线辅助电源 Auxiliary source Branch-line引入线 Lead-in遮断容量 Interrupting capacity电气线路 Current-carrying capacity Electric circuit载流量交流配电线路校正系数 Correction factor A.C. distribution circuit直流配电线路连续负荷 Continuous load D.C. distribution circuit事故照明线路 Emergency lighting circuit 长期载流量 Continuous capacity控制线路 Longtime ratingControl circuit长时间额定值接地或接零线路电动机堵转电流 Locked-rotor motor current Grounding or neutralizingcircuit限定负荷 Limited load信号线路 Signal circuit电感负荷 Inductive load有接地极的接地线路网 Induced currentGrounding with 感应电流grounding electrodes二．线路（母线、回路）Lines (Bus , circuits)定子绕组测温回路 Bus-barTemperature measuring 母线circuit for stator winding合闸电源 Closing power source bus 母线接地信号回路 Flashing-bus 闪光母线 Grounding signal circuit闪光信号回路 Spare busFlashing-signal circuit 备用母线开阀回路装在支柱上的插接式母线 Post-supported Circuit for opening valve 关（闭）阀回路plug-in bus wayCircuit for closing valve开度计回路 Circuit for opening meter 装在吊钩上的插接式母线 Hook-supported电流测量回路plug-in bus wayCurrent-measuring circuit差动保护回路装在支架上的插接式母线 Differental protective circuit Bracket-supported过流保护回路 Over-current protective circuit plug-in bus way合闸回路 Closing circuit小母线 Miniature bus停车延时回路 Delayed shutdown circuit Power supply miniature bus 电源小母线掉闸回路 Trip circuit Operating miniature bus操作小母线激磁回路 Exciting circuitsignal for 事故信号小母线 Miniature bus fault 备用回路 Spare circuitFlashing miniature bus 闪光小母线主回路 Main circuit馈路 Feeder circuit Main bus主母线现有回路 Existing circuit D.C. main bus 直流主母线单线回路 Single-wire circuit Prewarning bus 预告母线接地回路 Earthed circuitMain line干线有电压的电路 Live circuitLighting main line 照明干线三．设备 EquipmentsGrounding main line 接地干线 H.V. switchgear高压开关柜 Receptacle main line插座干线高压负荷开关 H.V. load break switch 动力配电箱 Power distribution cabinet三极高压断路器 3-pole HV circuit-breaker 电源配电箱 Source distribution cabinet刀开关 Knife switch 直流配电屏 D.C. switchboard (distribution转换开关 Transfer switchpanel)双极铁壳开关 2-pole iron-clad switch 交流低压配电屏 A.C.L.V. switchboard风扇变速开关 Fan speed regulator switch (distribution panel)密闭照明灯开关 Hermetic lighting switch Static capacitor cabinet 静电电容器柜防爆照明灯开关Explosion-proof lighting 多种电源插销箱 Receptacle box forswitchmiscellaneous power supplies行程开关控制箱 Control cabinetLimit switch高压隔离开关 Lighting (distribution panel) H.V. disconnecting switch 照明配电箱明装单极板钮开关Surface-mounted single-pole 连接箱 Junction boxtoggle switchOutlet box 出线盒暗装单极板钮开关 Flush-mounted single-pole 开关箱 Switch boxtoggle switchConsole控制台三路开关 Sectionalizing panel Three-way switch分段屏气密式组合开关进线屏 Incoming line panel Hermetic packet type switch防护式开关 Guard type switch 电控箱 Electric control panel联锁开关 Side board Interlock switch边屏操作方式选择开关 Selecting switch for types 端子箱 Terminal boxof operation供电盘 Power supply box控制电源开关 Switch for control supply 瓶车箱 Synchronizing cabinet主令开关 SpecialMaster switch (controller) 感应调压器专用变压器高压柜多切点切换开关induction cabinet H.V. for voltage Multi-point change-over transformerswitchregulator按钮电压互感器柜 Potential transformer cabinet Push-button控制按钮 Control push-button Signal panel 信号屏防爆控制按钮 Explosion-proof control Floating panel 浮充屏push-button蓄电池屏 Battery panel事故紧急按钮充电屏 Emergency stopping push-button Charging panel起动按钮 Bus tie cabinet 母线联络柜 Starting push-button停止按钮 Transfer switch转换开关 Stopping push-button现场按钮电压表转换开关 Push-button in field Voltmeter change-over switch挡板switch Metal-clad 铁壳开关switch) (Iron-clad damper音响解除按钮管式熔断器 Push-button for sound release Cartridge fuse起动器 Vacuum circuit breaker (V.C.B.) 真空断路器 StarterMagnetic starter磁力起动器 Automatic switch自动开关．Enameled high bay lighting 搪瓷深照型灯综合起动器 Combination starter (Magneticfittingstarter combination)防水防尘灯电力变压器 Power transformerWater and dust proof lightingfitting调压变压器 Voltage regulating transformer安全灯 Safety lighting fitting电压互感器 Potential transformer隔爆灯 Explosion-proof lighting fitting 电流互感器 Current transformer弯灯 Goose-neck light 照明变压器 Lighting transformer壁灯 Wall light三相三绕组变压器 3-phase tertiary winding高压水银灯 High pressure mercury vapor transformerlighting fittingH.V. testing transformer 高压试验变压器投光灯局部照明变压器 Local lighting transformer Flood-light (projection light)信号灯多量程仪用电流互感器 Multi-range current Signal lamp天棚灯transformer for measurement Ceiling-mounted lighting fitting局部照明灯 Local lighting fitting 降压变压器 Step-down transformer灯座 Lamp holder伺服电动机 Servo-motor事故照明灯 Dual-voltage motor Emergency lighting fitting 双电压电动机高压水银荧光灯感应电动机 Induction motorH.P. mercury fluorescentlighting fittingA.C. asynchronous motor 交流异步电动机广照型工厂灯同步电动机 synchronous motor Wide lit type industrial fitting深照型灯具 High bay lighting fitting 三相滑环感应电动机 3-phase slip-ring白炽灯具induction motorIncandescent lamp (bulb)圆球型灯三相鼠笼感应电动机 Globe lamp3-phase squirrel-cage嵌入式荧光灯 flush type fluorescent lighting induction motorfittingWound-rotor induction motor 绕线式电动机红色障碍灯 Red obstruction lamp for aviation Reaction motor 反应式电动机厂区道路照明灯 Street lighting in plant area Diesel generator 柴油发电机路灯 Street lampExcitation generator 励磁发电机视孔灯 Inspection hole lampSurface-mounted 2-pole 明装双极插座立杆弯灯 goose-neck post lamp , pole lamp模拟报警信号 Semigraph and alarm signal receptacle自整角机 Selsyn Flush-mounted 2-pole receptacle 暗装双极插座励磁机 Exciter 2-pole receptacle with 双极带接地插座显示器 Displaygrounding contact电位器 PotentiometerSurface-mounted single phase 单相三孔明插座内电阻 Internal resistance固定电阻（器） Fixed resistance 3-pole receptacle脱扣 Release , trip Guard type 防护式明装三相四孔插座分励 Shunt tripsurface-mounted 3-phase 4-pole receptacle 特殊失压脱扣器 Special no-voltage releaseStandard dome lighting fitting配照型灯 switch amplifier”Or““或”开关放大器．Brake 制动器接地继电器 Earthing relayCapacitor 电容重合闸继电器 Reclosing relay Rectifier 整流器同步继电器 Synchronous relay Chock 镇流器速动继电器 Quick acting relay Shunt分流器 Oil immersed rheostat油变阻器定时限继电器 Definite time relayFrequency sensitive rheostat 频敏电阻器光电继电器 Photoelectric relaySliding rheostat 滑线变阻器电子继电器 Electronic relay Buzzer蜂鸣器电磁式继电器 Electromagnetic relay Space heater (for motor) 电机加热器电动式继电器 Electrodynamic relay Motor operating 空气断路器电机操作机构mechanism for air circuit-breaker气压继电器 Gas-pressure relaySilicon controlled rectifier 可控硅励磁装置继电器常开触点 Relay N.O. contactexcitation device继电器常闭触点 Relay N.C. contactProtective device (element) 保护装置继电器保护触点（常开） Relay holding contact Flashing device闪光装置(N.O.)Lightning arrester 接闪装置（避雷器）断相保护 Phase failure protection能自动返回的常闭按钮触点Self-return buttonProtection , relays 保护、继电器四．with N.C. contactSignal relay 信号继电器模拟信号触点 Contact for semigraph signalOver-current relay 过电流继电器强励磁接点 Shock excitation contactVoltage relay 电压继电器电感线圈 Induction coilTime relay 时间继电器电流线圈 Current coilAuxiliary relay 中间继电器脱扣线圈 Trip coilThermal relay 热继电器合闸线圈 Close coilTemperature relay 温度继电器释放线圈 Releasing coilGas relay瓦斯继电器掉闸线圈 Tripping coilAuxiliary relay for 控制电源中间继电器予告信号 Prewarning signalcontrol supply掉闸回路断线信号 Breakage signal of tripRelay for auto-operation 自动操作继电器circuitUnder-voltage relay 低电压继电器断路器事故掉闸信号 Fault trip signal ofOver-voltage relay 过电压继电器breakerInterlock relay 联锁继电器掉闸音响信号 Tripping audible signalImpact relay冲击继电器重瓦斯预告信号 Heavy gas prewarning signalClose position relay 合闸位置继电器温度预告信号 Temperature prewarning signalReverse-current relay 逆流继电器手动、自动操作时事故信号 Fault signal inDifferential current relay 差流继电器manual/automatic operationDifferential relay 差动继电器保护掉闸 Protective tripCurrent relay 电流继电器控制掉闸 Control tripPower relay功率继电器 Manual trip手动跳闸．Voltmeter电压表 Emergency shutdown at 变电所紧急停车三相三线有功电度表 Three-phase three-wire substation kilowatt-hour meter , kWh meter工艺故障 Fault in process单相电度表 Single-phase kilowatt-hour meter 励磁故障 Fault in excitation三相无功电度表 Three-phase kilovar-hour 工作电源失电报警 No-voltage alarm of workingmeterelectric source有功功率表 Active power meter , 工作电源分合闸 On and off of working electric kilowatt meter无功功率表 Reactive power meter , kilovar sourcemeterThrow-in of working electric 工作电源投入三相瓦特表(功率表source) Three-phase watt meter功率因数表 supply of emergency electric Power factor meter 保安电源送电频率表 Frequency meter source 验电流器 Galvanoscope 运转指示 Indicating of operation欧姆表 Indicating of throw-in 投入指示 Ohmmeter相位表同步指示 Indicating of synchronism Phase meter转速表 Tachometer Delayed shutdown延时停车波长表 Wave-length meter电源切除 Switch off the power supply三相四线制标准电度表 Instantaneous trip and 速断及过流断通 3-phase 4-wire standardwatthour-meterover-current off/on过载电流表 Overload ammeterSelf-holding 自保持低功率因数瓦特表 Low power-factor wattmeter Self-lock 自锁交直流两用钳型电流表A.C./D.C. multi-purposeInterlocking联锁tongtesterInsulation supervision 绝缘监视兆欧表 Megger , Megohmmeter万用表 Avometer Voltage supervision 电压监视微安表 Microammeter Release of interlock联锁解除毫安表 MilliammeterTransfer of working and 工作、保安电源切换各种测量仪表 Various kind of measuringemergency power supplyinstrumentsSynchronization of 发电机与工作母线并车接地电阻测量仪 Earthing resistance tester真空管电压表 Vacuum tube voltmeter generator to working bus电动秒表 Electric second-meter Heavy gas protection重瓦斯保护六．防雷 Lightning protection Over-torque protection 开或闭超扭矩保护避雷装置 Lightning protector during opening and closing valve避雷针 Lightning rodSequence of motor starting 电机起动顺序避雷带 Strap type lightning protector Name plate denotation 铭牌框注字避雷网 Network of lightning protector (inscription)避雷针支架 Lightning rod support Electric instruments 五．电气仪表 Tip of lightning rod避雷针尖 Ammeter电流表．接地线 Ground connector避雷针拉铁 Brace for lightning rod接地干线 Ground(ing) main , (bus)避雷器 Lightning arrester , surge discharger接地网 Grounding network , earthing network 球型避雷器 Spherical arrester接地极 Tubular arrester Earth electrode (pole) 管形避雷器接地电阻阀形避雷器 Auto-valve arrester Earth resistance接地电路 Low voltage arrester Earth (ground) circuit 低压避雷器连接条角形避雷器 Horn arrester Connecting strip断接卡 Multigap arrester Connecting clamp 多隙避雷器八．铝避雷器 Aluminum cell arrester 室、所 Room , Substation贮藏室 Storage 氧化膜避雷器 Oxide film arrester套间 Compartment 击穿保险器 Puncture lightning arrester蓄电池室雷击 Lightning strokeBattery room控制室 Direct lightning stroke Control room 直接雷击配电室感应雷击 Induction lightning stroke Distribution room维修间 Thunderbolt daysRepair room 雷电日变电所 Substation雷电或然率 Lightning and thunder probability高压配电室触电 Electric shockH.V. distribution room休息室 Rest room静电感应 Electrostatic induction九．电修车间设备 Equipments Grounding, earthing接地of electric repair 七．砂轮机接地保护 Emery wheel grinder , Ground protection earth protection台钻 Grounding for lightning 防雷接地 Bench drilling machine交流电焊机保护接地 Protective earthing A.C. welding machine移动式空气压缩机人工接地 Portable air compressor Artificial grounding手电钻 Working 工作接地grounding Electric hand drillearthing , working单速手摇绕线机 Single speed hand winding Multiple earthing重复接地machine屏蔽接地 Screen earthing , shielding ground导线钳压器中性点接地 Neutral point groundedWire jointing press-clamp油压千斤顶 Hydraulic jack Grounding system , earthing system 接地系统电吹尘器 Electric dust cleaner Ground fault , earth fault 接地故障存放柜 Single phase earthing 单相接地 Store chest高压试验变压器 Bus ground母线接地 H.V. testing transformer泄漏试验变压器 Leakage testing set Grounding device , earthing device 接地装置大电流发生器 Down-lead , down conductor 引下线 Strong current generator油浸自冷感应调压器引下线固定 Oil-immersed self-cooled Clamping plate of support forinduction voltage regulatorfixing多量程仪用电流互感器支架夹板 Multi-range current Down leadtransformer for measurementSupport for fixing down lead引下线固定支脚垫圈仪用电感互感器 Instrumental voltage Pad塑料绝缘线transformerPlastics insulated wire橡套电缆 Rubber sheathed cable 单相自耦变压器 Single-phase auto-transformer中间接头 Splice 三相自耦变压器 3-phase auto-transformer填充剂 Filling agent Silicon rectifier硅整流器绝缘电线 Insulated wire仪表试验台 Testing stand for instrument移动软电缆 Movable flexible cable Relay and contactor 接触器，继电器试验台补偿导线 Extension wire testing stand套管 Slow scanning oscillograph Bushing 慢扫描示波器母线槽 Busway 交流电子稳压器 A.C. electronic voltage 悬索stabilizerCable suspension滑触线携带式交流电桥 Trolley conductor Portable A.C. electric bridge镀锌煤气管 Galvanized gas pipe 接地电阻测量仪 Earthing resistance tester镀锌角钢 Galvanized steel angle Cable fault detector电缆故障探伤仪镀锌扁钢 Galvanized steel strap , electric bridge D.C. 直流单臂电桥single-arm 钢丝绳 Steel wire ropeWheatstone bridge 电笛 SirenMaterial 材料十．电磁阀 Electromagnetic valve连接片 Connecting link Insulating tape 绝缘包布切换片 Transfering link Filler , packing 填料端子排Terminal boardInsulating compound 绝缘膏半导体二极管 Semiconductor diodeCable compound 电缆膏开度计 Opening meterAnti-corrosive oil 防腐油逻辑元件 Logical element接线盒 Junction boxBituminous varnish 沥青漆仪表槽板 Instrument trunking Insulating varnish 绝缘漆电缆吊架 Cable hanger Enamel varnish 瓷漆出线套 Outgoing line sleeveNon-ferrous metal有色金属十一．图名 Drawings , diagramsferrous metal 黑色金属电气图纸目录 Contents of electric drawingsWhite metal白金属电力系统图 Electric power system diagramMica云母照明系统图 Lighting system diagramEpoxy resin环氧树脂电力平面布置图 Electric power layout planPolyvinyl chloride , PVC 聚氯乙烯照明平面布置图 Lighting layout planWax蜡单线图 One line diagramTalc powder滑石粉控制箱面部布置图 Surface arrangement ofBakelite电胶木control boxPolyacrylic cover 聚丙烯外壳背部接线图 Back wiring (diagram)Oil-proof rubber tubes耐油橡胶管 External (outside) wiring diagram外部接线图 Grounding copper wire接地铜线启动设备 Starting device 内部接线图 Internal (inside) wiring diagram型号规格 Type , specification 控制原理图 Principle control diagram保护元件 Protective element 原理图 Schematic diagram计量装置 Calculating device展开图 Developed diagram用电设备主回路 Main circuit of electric 电气标准图 Electric standard drawingequipmentElectric working drawing 电气施工图控制回路复用图 Reproducibles (drawing) Control circuit控制装置 Cable hook-up diagramControl device 电缆联系图用电设备 Electric equipment 转换开关接点图 Contact diagram of transfer设备容量 Consumer capacity switch生产设备 Side view of box 箱侧视图 Production equipment位号正视图 Front view , facade No. of location名称 Name Back view 背视图备注 Remarks 剖面图 Section引入线 Reference drawing 参考图 Feed in配电箱 Distribution cabinet 电缆敷设图 Cable laying diagram型号及编号 Arrangement of frames inside 箱内框架布置图 Type and No.开关型号the cabinetSwitch type保护装置 Protective device diagram of developed 控制箱台面展开图 Surface回路编号 Circuit No. console相别 Phase出线端子示意图 Schematic diagram of terminal灯数 Number of lampsoutgoing lines插座数 Number of receptacles Diagram of terminal connections 端子接线图电缆编号 List of wire , cable and conduits 电气管线表 No. of line起点设备材料表 List of equipment and materials Starting终点 Ending表头十二． Tables母线截面 Section of bus 电力系统图 Power system diagram零母线 Neutral bus 引入线 Lead in屏编号保护设备 Protective device Panel No.型号及方案号 Type Type and variant No. 型号控制原理图号 Principle control diagram Rating 额定值工艺位号整定值 SettingProcess item No.十三．主启动设备回路标准图词汇 Circuit to starting device Terms from standard DWG电工系统图图形符号导线型号、芯数、截面及管径 Graphic symbols for Conductor type ,electric systemcores , section & diameter of conduitA.C. phase sequenceWire length 线长交流电的相别 Conduit length管长导线由上引来 Conductors turning from above 直流电的正负极 D.C. positive and negative导线由下引来 Conductors turning from below poles电缆沟 Cable trench 有中性点引出线的星形连接的三相绕组调压器Star-connected three phase windings with Voltage regulator隔离变压器neutral outletIsolating transformer击穿保护器 3-phase winding Puncturing safety device 开口三角形连接的三相绕组晶体管with open delta connectionTransisorized diode地坪互相连接的导线 Cross connection of wires Grade level电缆与水管平行 Cable running parallel to a 不连接的跨越导线 Crossing wires not inwater supply pipecontact with each other电缆与热力管道交叉敷设 Cable running across 可拆卸的电气连接 Removable connectionheat pipeline Pothead of cable or cable end 电缆终端头车道 Auto-transformerDrive way自耦变压器电缆穿管与管道交叉感应 Cable protective pipe 调压器 Induction voltage regulatoracross a pipelinemotor 凸极同步电动机 Salient pole synchronous双(单) Accumulator battery 带接换装置的蓄电池组侧支架电缆沟 Trench with rack on bothsides (one side) with tap-changers室外地坪 Outdoor grade 空气断路器 Air circuit-breaker跨接线保持触点 Holding contact Jumper金属软管 Thermal elementFlexible metal tube 热元件过渡接头 Adapter 自动复位的操作开关 Spring-return operatingswitch电气工程及其自动化专业术语翻译 Plug-in connector 插接器transistor 晶体管 Horn电喇叭audion 电炉三极管 Electric furnacecapacitance Shunt分流器电容Diesel 柴油机 Silicon controlled rectifier 可控硅整流箱屏AC- motors 交流电机 box paneltransistor 直流配电屏 D.C. distributing panelcoupling 磁力起动器组联结 Magnetic starter group 耦合current carrying capacity 载流能力（最大允自动开关箱 Automatic switch box许电流） Limit switch行程开关conductivity 传导性局部灯 Local lighting fittingin isolation 荧光灯列绝缘 Series fluorescent lighting fittinglead Protective switch 防护式灯开关导线leakage current 泄漏电流 Conductors turning up 导线引上感应系数inductance Conductors turning down导线引下coefficient 系数 loops 线圈configuration 构造 macroprocessor 微处理器constant 常量 multimedia show 多媒体展示copper sheet 铜片 medium-power distribution 中压配电damping motor and soft starters 电机及软起动器阻尼decomposition 分解 numerical controls 数控系统decouple 分离 optimal 最佳的，最理想的delay circuit 延迟电路 overload relays 过载继电器dielectric sheets overshoot 介电原片过冲diode clamping钳位peak current 峰值电流edge connector 边缘连接器电力分散 power dissipationelectrical infrastructure process automation 过程自动化电气基础设施electrical installation 电气安装技术过程仪process instrumentation and analyticsequations set 方程组表及分析仪器four-layer 四层穿孔，冲压punchhookup 接线图 reactance 电抗human machine interface 人机界面再充 rechargeimpedance regulated power supply 稳压电源阻抗incidence 阻抗resistance 入射incident wave 入射波电阻器resistorincorporated 合成一体的 resonate 共振instantaneous 瞬间的自感应 self-inductance interleaved series inductance 串联感应交叉load admittance 模拟simulation 负载导纳lumped switching 配电；交流集中的modal 模式的热循环thermal cyclemodeling 建模 thickness 厚度motor management systems 电机管理系统调压器voltage regulator mounting pads 安装垫片 warping 扭曲，变形noise margins 噪音安全系数线路配置图wiring layoutproximity effect 交流变频器AC-drives 邻近效应radian asymmetrical 弧度非对称的resistive 衰减attenuation 有抵抗力的schematic 示意图桥接阻抗bridged impedanceservices & industry solutions 电缆桥架cable bridge 服务和工业解决方案电荷charge终结器terminator 电路原理图解circuit schematic diagramundershoot 负脉冲信号；下冲。