电气专业术语中英对照

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1、一电气名词 Electric items二线路（母线、回路）Lines (Bus , circuits)三设备 Equipments四保护、继电器 Protection , relays五电气仪表 Electric instruments六防雷 Lightning protection七接地 Grounding , earthing八室、所 Room , Substation九电修车间设备 Equipments of electric repair十材料 Material十一图名 Drawings , diagrams十二表头 Tables十三标准图词汇 Terms from standard

2、 DWG一电气名词 Electric items交（直）流 Alternating (direct) current短路电流 Short-circuit current起始次暂态短路电流 Initial subtransient short-circuit current冲击电流 Impulse current稳态短路电流 Steady state short-circuit current临界电流 Critical current切断电流 Rupturing current熔断电流 Blow-out current故障电流 Fault current计算电流 Calculating curr

3、ent极限有限电流 Limit effective current过电流 Over current逆电流 Inverse current整定电流 Setting current额定电流 Rated current电流密度 Current density短路电流最大有效值 Maximum effective value of short-circuit current高压 High-voltage , High-tension低压 Low-voltage , Low-tension计算电压 Calculating voltage激磁电压 Exciting voltage冲击电压 Impulse

4、voltage临界电压 Critical voltage残留电压 Residual voltage击穿电压 Puncture voltage脉动电压 Pulsating voltage供电电压 Supply voltage电力电压 Power voltage照明电压 Lighting voltage灯丝电压 Filament voltage额定电压 Rated voltage电压损失 Voltage loss过(欠)电压 Over (under) voltage线路电压 Line voltage电压降 Voltage drop工作电压 Working voltage一次电压 Primary v

5、oltage二次电压 Secondary voltage电源 Electric source (power supply)自控电压 Power supply for process control6kV控制闪光电源 Flashing supply for 6kV control工作电源 Working power supply (electric source)保安电源 Emergency power supply (electric source)直流稳压电源 Stabilized D.C. source控制电源 Control supply直流电源 D.C. source交流电源 A.C.

6、 source负荷计算 Load calculation设备容量 Installed capacity需要容量 Electric demand功率因数 Power factor安装高度 Mounting height耐电压 Breakdown voltage工频耐压 High-voltage test with working frequency表面闪络 Surface flash-over直流泄漏 D.C. leakage体电阻率 Volume resistivity介质损失角 Dielectric loss angle击穿强度 Puncture intensity电压等级 Voltage

7、grade比重 Specific gravity性能 Feature相序 Phase sequence瞬时 Instantaneous倾角 Angle of inclination跨度 Span正极 Positive pole负极 Negative pole截面(积) Cross section area辅助电源 Auxiliary source遮断容量 Interrupting capacity载流量 Current-carrying capacity校正系数 Correction factor连续负荷 Continuous load长期载流量 Continuous capacity长时间额

8、定值 Longtime rating电动机堵转电流 Locked-rotor motor current限定负荷 Limited load电感负荷 Inductive load感应电流 Induced current二线路（母线、回路）Lines (Bus , circuits)母线 Bus-bar合闸电源 母线 Closing power source bus闪光母线 Flashing-bus备用母线 Spare bus装在支柱上的插接式母线 Post-supported plug-in bus way装在吊钩上的插接式母线 Hook-supported plug-in bus way装在支

9、架上的插接式母线 Bracket-supported plug-in bus way小母线 Miniature bus电源小母线 Power supply miniature bus操作小母线 Operating miniature bus事故信号小母线 Miniature bus for fault signal闪光小母线 Flashing miniature bus主母线 Main bus直流主母线 D.C. main bus预告母线 Prewarning bus干线 Main line照明干线 Lighting main line接地干线 Grounding main line插座干线

10、Receptacle main line电压干线 Voltage main line端子出线 Terminal outgoing中性线 Neutral支线 Branch-line引入线 Lead-in电气线路 Electric circuit交流配电线路 A.C. distribution circuit直流配电线路 D.C. distribution circuit事故照明线路 Emergency lighting circuit控制线路 Control circuit接地或接零线路 Grounding or neutralizing circuit信号线路 Signal circuit有接

11、地极的接地线路网 Grounding with grounding electrodes定子绕组测温回路 Temperature measuring circuit for stator winding接地信号回路 Grounding signal circuit闪光信号回路 Flashing-signal circuit开阀回路 Circuit for opening valve关（闭）阀回路 Circuit for closing valve开度计回路 Circuit for opening meter电流测量回路 Current-measuring circuit差动保护回路 Diffe

12、rental protective circuit过流保护回路 Over-current protective circuit合闸回路 Closing circuit停车延时回路 Delayed shutdown circuit掉闸回路 Trip circuit激磁回路 Exciting circuit备用回路 Spare circuit主回路 Main circuit馈路 Feeder circuit现有回路 Existing circuit单线回路 Single-wire circuit接地回路 Earthed circuit有电压的电路 Live circuit三设备 Equipment

13、s高压开关柜 H.V. switchgear动力配电箱 Power distribution cabinet电源配电箱 Source distribution cabinet直流配电屏 D.C. switchboard (distribution panel)交流低压配电屏 A.C.L.V. switchboard (distribution panel)静电电容器柜 Static capacitor cabinet多种电源插销箱 Receptacle box for miscellaneous power supplies控制箱 Control cabinet照明配电箱 Lighting (

14、distribution panel)连接箱 Junction box出线盒 Outlet box开关箱 Switch box控制台 Console分段屏 Sectionalizing panel进线屏 Incoming line panel电控箱 Electric control panel边屏 Side board端子箱 Terminal box供电盘 Power supply box瓶车箱 Synchronizing cabinet感应调压器专用变压器高压柜 Special transformer H.V. cabinet for induction voltage regulator电

15、压互感器柜 Potential transformer cabinet信号屏 Signal panel浮充屏 Floating panel蓄电池屏 Battery panel充电屏 Charging panel母线联络柜 Bus tie cabinet转换开关 Transfer switch电压表转换开关 Voltmeter change-over switch铁壳开关 Metal-clad switch (Iron-clad switch)管式熔断器 Cartridge fuse真空断路器 Vacuum circuit breaker (V.C.B.)自动开关 Automatic switc

16、h高压 负荷开关 H.V. load break switch三极高压断路器 3-pole HV circuit-breaker刀开关 Knife switch转换开关 Transfer switch双极铁壳开关 2-pole iron-clad switch风扇变速开关 Fan speed regulator switch密闭照明灯开关 Hermetic lighting switch防爆照明灯开关 Explosion-proof lighting switch行程开关 Limit switch高压隔离开关 H.V. disconnecting switch明装单极板钮开关 Surface-

17、mounted single-pole toggle switch暗装单极板钮开关 Flush-mounted single-pole toggle switch三路开关 Three-way switch气密式组合开关 Hermetic packet type switch防护式开关 Guard type switch联锁开关 Interlock switch操作方式选择开关 Selecting switch for types of operation控制电源开关 Switch for control supply主令开关 Master switch (controller)多切点切换开关

18、Multi-point change-over switch按钮 Push-button控制按钮 Control push-button防爆控制按钮 Explosion-proof control push-button事故紧急按钮 Emergency stopping push-button起动按钮 Starting push-button停止按钮 Stopping push-button现场按钮 Push-button in field挡板 damper音响解除按钮 Push-button for sound release起动器 Starter磁力起动器 Magnetic starter

19、综合起动器 Combination starter (Magnetic starter combination)电力变压器 Power transformer调压变压器 Voltage regulating transformer电压互感器 Potential transformer电流互感器 Current transformer照明变压器 Lighting transformer三相三绕组变压器 3-phase tertiary winding transformer高压试验变压器 H.V. testing transformer局部照明变压器 Local lighting transfo

20、rmer多量程仪用电流互感器 Multi-range current transformer for measurement降压变压器 Step-down transformer伺服电动机 Servo-motor双电压电动机 Dual-voltage motor感应电动机 Induction motor交流异步电动机 A.C. asynchronous motor同步电动机 synchronous motor三相滑环感应电动机 3-phase slip-ring induction motor三相鼠笼感应电动机 3-phase squirrel-cage induction motor绕线式电

21、动机 Wound-rotor induction motor反应式电动机 Reaction motor柴油发电机 Diesel generator励磁发电机 Excitation generator明装双极插座 Surface-mounted 2-pole receptacle暗装双极插座 Flush-mounted 2-pole receptacle双极带接地插座 2-pole receptacle with grounding contact单相三孔明插座 Surface-mounted single phase 3-pole receptacle防护式明装三相四孔插座 Guard typ

22、e surface-mounted 3-phase 4-pole receptacle配照型灯 Standard dome lighting fitting搪瓷深照型灯 Enameled high bay lighting fitting防水防尘灯 Water and dust proof lighting fitting安全灯 Safety lighting fitting隔爆灯 Explosion-proof lighting fitting弯灯 Goose-neck light壁灯 Wall light高压水银灯 High pressure mercury vapor lighting

23、fitting投光灯 Flood-light (projection light)信号灯 Signal lamp天棚灯 Ceiling-mounted lighting fitting局部照明灯 Local lighting fitting灯座 Lamp holder事故照明灯 Emergency lighting fitting高压水银荧光灯 H.P. mercury fluorescent lighting fitting广照型工厂灯 Wide lit type industrial fitting深照型灯具 High bay lighting fitting白炽灯具 Incandesce

24、nt lamp (bulb)圆球型灯 Globe lamp嵌入式荧光灯 flush type fluorescent lighting fitting红色障碍灯 Red obstruction lamp for aviation厂区道路照明灯 Street lighting in plant area路灯 Street lamp视孔灯 Inspection hole lamp立杆弯灯 goose-neck post lamp , pole lamp模拟报警信号 Semigraph and alarm signal自整角机 Selsyn励磁机 Exciter显示器 Display电位器 Pote

25、ntiometer内电阻 Internal resistance固定电阻（器） Fixed resistance脱扣 Release , trip分励 Shunt trip特殊失压脱扣器 Special no-voltage release“或”开关放大器 “Or” switch amplifier制动器 Brake电容 Capacitor整流器 Rectifier镇流器 Chock分流器 Shunt油变阻器 Oil immersed rheostat频敏电阻器 Frequency sensitive rheostat滑线变阻器 Sliding rheostat蜂鸣器 Buzzer电机加热器

26、Space heater (for motor)空气断路器电机操作机构 Motor operating mechanism for air circuit-breaker可控硅励磁装置 Silicon controlled rectifier excitation device保护装置 Protective device (element)闪光装置 Flashing device接闪装置 （避雷器） Lightning arrester断相保护 Phase failure protection四保护、继电器 Protection , relays信号继电器 Signal relay过电流继电器

27、 Over-current relay电压继电器 Voltage relay时间继电器 Time relay中间继电器 Auxiliary relay热继电器 Thermal relay温度继电器 Temperature relay瓦斯继电器 Gas relay控制电源中间继电器 Auxiliary relay for control supply自动操作继电器 Relay for auto-operation低电压继电器 Under-voltage relay过电压继电器 Over-voltage relay联锁继电器 Interlock relay冲击继电器 Impact relay合闸位

28、置继电器 Close position relay逆流继电器 Reverse-current relay差流继电器 Differential current relay差动继电器 Differential relay电流继电器 Current relay功率继电器 Power relay接地继电器 Earthing relay重合闸继电器 Reclosing relay同步继电器 Synchronous relay速动继电器 Quick acting relay定时限继电器 Definite time relay光电继电器 Photoelectric relay电子继电器 Electronic

29、 relay电磁式继电器 Electromagnetic relay电动式继电器 Electrodynamic relay气压继电器 Gas-pressure relay继电器常开触点 Relay N.O. contact继电器常闭触点 Relay N.C. contact继电器保护触点（常开） Relay holding contact (N.O.)能自动返回的常闭按钮触点 Self-return button with N.C. contact模拟信号触点 Contact for semigraph signal强励磁接点 Shock excitation contact电感线圈 Indu

30、ction coil电流线圈 Current coil脱扣线圈 Trip coil合闸线圈 Close coil释放线圈 Releasing coil掉闸线圈 Tripping coil予告信号 Prewarning signal掉闸回路断线信号 Breakage signal of trip circuit断路器事故掉闸信号 Fault trip signal of breaker掉闸音响信号 Tripping audible signal重瓦斯预告信号 Heavy gas prewarning signal温度预告信号 Temperature prewarning signal手动、自动操

31、作时事故信号 Fault signal in manual/automatic operation保护掉闸 Protective trip控制掉闸 Control trip手动跳闸 Manual trip变电所紧急停车 Emergency shutdown at substation工艺故障 Fault in process励磁故障 Fault in excitation工作电源失电报警 No-voltage alarm of working electric source工作电源分合闸 On and off of working electric source工作电源投入 Throw-in

32、of working electric source保安电源送电 supply of emergency electric source运转指示 Indicating of operation投入指示 Indicating of throw-in同步指示 Indicating of synchronism延时停车 Delayed shutdown电源切除 Switch off the power supply速断及过流断通 Instantaneous trip and over-current off/on自保持 Self-holding自锁 Self-lock联锁 Interlocking绝

33、缘监视 Insulation supervision电压监视 Voltage supervision联锁解除 Release of interlock工作、保安电源切换 Transfer of working and emergency power supply发电机与工作母线并车 Synchronization of generator to working bus重瓦斯保护 Heavy gas protection开或闭超扭矩保护 Over-torque protection during opening and closing valve电机起动顺序 Sequence of motor

34、starting铭牌框注字 Name plate denotation (inscription)五电气仪表 Electric instruments电流表 Ammeter电压表 Voltmeter三相三线有功电度表 Three-phase three-wire kilowatt-hour meter , kWh meter单相电度表 Single-phase kilowatt-hour meter三相无功电度表 Three-phase kilovar-hour meter有功功率表 Active power meter , kilowatt meter无功功率表 Reactive power

35、 meter , kilovar meter三相瓦特表(功率表) Three-phase watt meter功率因数表 Power factor meter频率表 Frequency meter验电流器 Galvanoscope欧姆表 Ohmmeter相位表 Phase meter转速表 Tachometer波长表 Wave-length meter三相四线制标准电度表 3-phase 4-wire standard watthour-meter过载电流表 Overload ammeter低功率因数瓦特表 Low power-factor wattmeter交直流两用钳型电流表 A.C./D

36、.C. multi-purpose tongtester兆欧表 Megger , Megohmmeter万用表 Avometer微安表 Microammeter毫安表 Milliammeter各种测量仪表 Various kind of measuring instruments接地电阻测量仪 Earthing resistance tester真空管电压表 Vacuum tube voltmeter电动秒表 Electric second-meter六防雷 Lightning protection避雷装置 Lightning protector避雷针 Lightning rod避雷带 Str

37、ap type lightning protector避雷网 Network of lightning protector避雷针支架 Lightning rod support避雷针尖 Tip of lightning rod避雷针拉铁 Brace for lightning rod避雷器 Lightning arrester , surge discharger球型避雷器 Spherical arrester管形避雷器 Tubular arrester阀形避雷器 Auto-valve arrester低压避雷器 Low voltage arrester角形 避雷器 Horn arrester

38、多隙避雷器 Multigap arrester铝避雷器 Aluminum cell arrester氧化膜避雷器 Oxide film arrester击穿保险器 Puncture lightning arrester雷击 Lightning stroke直接雷击 Direct lightning stroke感应雷击 Induction lightning stroke雷电日 Thunderbolt days雷电或然率 Lightning and thunder probability触电 Electric shock静电感应 Electrostatic induction七接地 Groun

39、ding , earthing接地保护 Ground protection , earth protection防雷接地 Grounding for lightning保护接地 Protective earthing人工接地 Artificial grounding工作接地 Working grounding , working earthing重复接地 Multiple earthing屏蔽接地 Screen earthing , shielding ground中性点接地 Neutral point grounded接地系统 Grounding system , earthing syst

40、em接地故障 Ground fault , earth fault单相接地 Single phase earthing母线接地 Bus ground接地装置 Grounding device , earthing device引下线 Down-lead , down conductor引下线固定 Clamping plate of support for fixing支架夹板 Down lead引下线固定支脚 Support for fixing down lead接地线 Ground connector接地干线 Ground(ing) main , (bus)接地网 Grounding ne

41、twork , earthing network接地极 Earth electrode (pole)接地电阻 Earth resistance接地电路 Earth (ground) circuit连接条 Connecting strip断接卡 Connecting clamp八室、所 Room , Substation贮藏室 Storage套间 Compartment蓄电池室 Battery room控制室 Control room配电室 Distribution room维修间 Repair room变电所 Substation高压配电室 H.V. distribution room休息室

42、Rest room九电修车间设备 Equipments of electric repair砂轮机 Emery wheel grinder台钻 Bench drilling machine交流电焊机 A.C. welding machine移动式空气压缩机 Portable air compressor手电钻 Electric hand drill单速手摇绕线机 Single speed hand winding machine导线钳压器 Wire jointing press-clamp油压千斤顶 Hydraulic jack电吹尘器 Electric dust cleaner存放柜 Sto

43、re chest高压试验变压器 H.V. testing transformer泄漏试验变压器 Leakage testing set大电流发生器 Strong current generator油浸自冷感应调压器 Oil-immersed self-cooled induction voltage regulator多量程仪用电流互感器 Multi-range current transformer for measurement仪用电感互感器 Instrumental voltage transformer单相自耦变压器 Single-phase auto-transformer三相自耦变

44、压器 3-phase auto-transformer硅整流器 Silicon rectifier仪表试验台 Testing stand for instrument接触器，继电器试验台 Relay and contactor testing stand慢扫描示波器 Slow scanning oscillograph交流电子稳压器 A.C. electronic voltage stabilizer携带式交流电桥 Portable A.C. electric bridge接地电阻测量仪 Earthing resistance tester电缆故障探伤仪 Cable fault detecto

45、r直流单臂电桥 D.C. single-arm electric bridge , Wheatstone bridge十材料 Material绝缘包布 Insulating tape填料 Filler , packing绝缘膏 Insulating compound电缆膏 Cable compound防腐油 Anti-corrosive oil沥青漆 Bituminous varnish绝缘漆 Insulating varnish瓷漆 Enamel varnish有色金属 Non-ferrous metal黑色金属 ferrous metal白金属 White metal云母 Mica环氧树脂

46、 Epoxy resin聚氯乙烯 Polyvinyl chloride , PVC蜡 Wax滑石粉 Talc powder电胶木 Bakelite聚丙烯外壳 Polyacrylic cover耐油橡胶管 Oil-proof rubber tubes接地铜线 Grounding copper wire垫圈 Pad塑料绝缘线 Plastics insulated wire橡套电缆 Rubber sheathed cable中间接头 Splice填充剂 Filling agent绝缘电线 Insulated wire移动软电缆 Movable flexible cable补偿导线 Extension

47、 wire套管 Bushing母线槽 Busway悬索 Cable suspension滑触线 Trolley conductor镀锌煤气管 Galvanized gas pipe镀锌角钢 Galvanized steel angle镀锌扁钢 Galvanized steel strap钢丝绳 Steel wire rope电笛 Siren电磁阀 Electromagnetic valve连接片 Connecting link切换片 Transfering link端子排 Terminal board半导体二极管 Semiconductor diode开度计 Opening meter逻辑元件

48、 Logical element接线盒 Junction box仪表槽板 Instrument trunking电缆吊架 Cable hanger出线套 Outgoing line sleeve十一图名 Drawings , diagrams电气图纸目录 Contents of electric drawings电力系统图 Electric power system diagram照明系统图 Lighting system diagram电力平面布置图 Electric power layout plan照明平面布置图 Lighting layout plan单线图 One line diag

49、ram控制箱面部布置图 Surface arrangement of control box背部接线图 Back wiring (diagram)外部接线图 External (outside) wiring diagram内部接线图 Internal (inside) wiring diagram控制原理图 Principle control diagram原理图 Schematic diagram展开图 Developed diagram电气标准图 Electric standard drawing电气施工图 Electric working drawing复用图 Reproducible

50、s (drawing)电缆联系图 Cable hook-up diagram转换开关接点图 Contact diagram of transfer switch箱侧视图 Side view of box正视图 Front view , facade背视图 Back view剖面图 Section参考图 Reference drawing电缆敷设图 Cable laying diagram箱内框架布置图 Arrangement of frames inside the cabinet控制箱台面展开图 Surface developed diagram of console出线端子示意图 Sche

51、matic diagram of terminal outgoing lines端子接线图 Diagram of terminal connections电气管线表 List of wire , cable and conduits设备材料表 List of equipment and materials十二表头 Tables电力系统图 Power system diagram引入线 Lead in保护设备 Protective device型号 Type额定值 Rating整定值 Setting主启动设备回路 Circuit to starting device导线型号、芯数、截面及管径 C

52、onductor type , cores , section & diameter of conduit线长 Wire length管长 Conduit length启动设备 Starting device型号规格 Type , specification保护元件 Protective element计量装置 Calculating device用电设备主回路 Main circuit of electric equipment控制回路 Control circuit控制装置 Control device用电设备 Electric equipment设备容量 Consumer capacit

53、y生产设备 Production equipment位号 No. of location名称 Name备注 Remarks引入线 Feed in配电箱 Distribution cabinet型号及编号 Type and No.开关型号 Switch type保护装置 Protective device回路编号 Circuit No.相别 Phase灯数 Number of lamps插座数 Number of receptacles电缆编号 No. of line起点 Starting终点 Ending母线截面 Section of bus零母线 Neutral bus屏编号 Panel N

54、o.型号及方案号 Type and variant No.控制原理图号 Principle control diagram工艺位号 Process item No.十三标准图词汇 Terms from standard DWG电工系统图图形符号 Graphic symbols for electric system交流电的相别 A.C. phase sequence直流电的正负极 D.C. positive and negative poles有中性点引出线的星形连接的三相绕组 Star-connected three phase windings with neutral outlet开口三

55、角形连接的三相绕组 3-phase winding with open delta connection互相连接的导线 Cross connection of wires不连接的跨越导线 Crossing wires not in contact with each other可拆卸的电气连接 Removable connection电缆终端头 Pothead of cable or cable end自耦变压器 Auto-transformer感应 调压器 Induction voltage regulator凸极同步电动机 Salient pole synchronous motor带接换

56、装置的蓄电池组 Accumulator battery with tap-changers空气断路器 Air circuit-breaker保持触点 Holding contact热元件 Thermal element自动复位的操作开关 Spring-return operating switch插接器 Plug-in connector电喇叭 Horn电炉 Electric furnace分流器 Shunt可控硅整流箱屏 Silicon controlled rectifier box panel直流配电屏 D.C. distributing panel磁力起动器组 Magnetic sta

57、rter group自动开关箱 Automatic switch box行程开关 Limit switch局部灯 Local lighting fitting荧光灯列 Series fluorescent lighting fitting防护式灯开关 Protective switch导线引上 Conductors turning up导线引下 Conductors turning down导线由上引来 Conductors turning from above导线由下引来 Conductors turning from below电缆沟 Cable trench调压器 Voltage reg

58、ulator隔离变压器 Isolating transformer击穿保护器 Puncturing safety device晶体管 Transisorized diode地坪 Grade level电缆与水管平行 Cable running parallel to a water supply pipe电缆与热力管道交叉敷设 Cable running across heat pipeline车道 Drive way电缆穿管与管道交叉 Cable protective pipe across a pipeline双(单)侧支架电缆沟 Trench with rack on both side

59、s (one side)室外地坪 Outdoor grade跨接线 Jumper金属软管 Flexible metal tube过渡接头 Adapter电气工程及其自动化专业术语翻译transistor 晶体管audion 三极管capacitance 电容Diesel 柴油机AC- motors 交流电机transistorcoupling 联结 耦合current carrying capacity 载流能力（最大允许电流）conductivity 传导性in isolation 绝缘lead 导线leakage current 泄漏电流inductance 感应系数loops 线圈mac

60、roprocessor 微处理器multimedia show 多媒体展示medium-power distribution 中压配电motor and soft starters 电机及软起动器numerical controls 数控系统optimal 最佳的，最理想的overload relays 过载继电器overshoot 过冲peak current 峰值电流power dissipation 电力分散process automation 过程自动化process instrumentation and analytics 过程仪表及分析仪器punch 穿孔，冲压reactance

61、 电抗recharge 再充regulated power supply 稳压电源resistance 阻抗resistor 电阻器resonate 共振self-inductance 自感应series inductance 串联感应simulation 模拟switching 配电；交流thermal cycle 热循环thickness 厚度voltage regulator 调压器warping 扭曲，变形wiring layout 线路配置图AC-drives 交流变频器asymmetrical 非对称的attenuation 衰减bridged impedance 桥接阻抗cable bridge 电缆桥架charge 电荷circuit schematic diagram 电路原理图解coefficient 系数configuration 构造constant 常量copper sheet 铜片damping 阻尼decomposition 分解decouple 分离delay circuit 延迟电路dielectric sheets 介电原片diode clamping钳位edge connector 边缘连接器electr