CJX操作继电器装置技术说明书

12 222 1 2 1 2 2用途与适用范围CJXI系列交流接触器（以下简称接触器）主要用于交流50（或60）Hz，额定工作电压到660V，在AC-3使用类别下，额定工作电压为380V时额定工作电流至630A的电路中，供远距离接通和分断电路，并可与JRS2（3UA5）相应型号热继电器组成电磁起动器，以保护可能发生的操作过负荷的电路。

接触器按IEC60947-4-1及GB14048.4设计、制造与检验。

12型号含义 CJX1辅助触头数量及组合（见表1） 产品规格代号（在AC-3使用类别 下额定工作电压为380V时的额定 工作电流） 设计代号 交流接触器表1 辅助触头数量及组合辅助触 头代号触头 数量 动合NO 动断NC 10 01 11 20 02 21 1 01 2 0 0 1 1 0 23正常工作条件和安装条件3.13.23.33.4 3.5 3.63.7海拔不超过2 000m； 周围空气温度为-5℃～+40℃，24h内平均值不超过+35℃； 最高温度为+40℃时，空气的相对湿度不超过50%，在较底的温度下允许有较高的相对湿度，例如+20℃时不大于90%。

对由于温度变化偶尔产生的凝露应采取特殊的措施。

污染等级：3级。

安装类别：III 。

安装在无显著摇动和冲击振动的地方。

4主要技术参数主要技术参数见表2 4.1C J X 1-9-12C J X 1C J X 1-16C J X 1-22C J X 1-32C J X 1-45C J X 1-63C J X 1-75C J X 1-85C J X 1-110C J X 1-140C J X 1-170C J X 1-205C J X 1-250C J X 1-300C J X 1-400C J X 1-475C J X 1-630表2 主要技术参数型 号额定绝缘电压U i V额定 工作 电流 I e （A ）可控制功率P e（k W ）约定发热电流≥I t h 额定操作频率 次/h 机械寿命（万次）电寿命 万次配熔断器规格（R T 16)A A C -3A C -4A C -3A C -4380V 660V 380V 660V 380V 660V 380V 660V AA C -3A C -4A C -3A C -4912162232456375851101401702052503004004756307.29.513.513.518456375751101101701702002503204003.34.37.78.51224283442546875961101251501651651.41.93.547.512141721273542679511011515045.57.51115223037455575901101321602002503255.57.51111153755555590901601601852203153551.52.2445.5111518.5223037374555557575751.11.5347.511111518.52230375575901101322030457090150170205250300400550630120010001006003003001508006008060201510162025325080100125160200200250250300400500630800660表4型号CJX1-9/12CJX1-16/22CJX1-32amaxbc maxde max g 1o 79899060±0.6075±0.6075±0.6046467435±0.5035±0.5050±0.501061161098884.8+0.4805+0.480CJX1-45～140的外形及安装尺寸图2及表5。

BCJX2系列交流接触器(以下简称接触器)，主要用于交流50Hz(或60Hz)，电压至690V，电流至95A 的电路中，供远距离接通和分断电路、频繁地起动和控制交流电动机之用，并可与适当的热继电器组成电磁起动器以保护可能发生操作过负荷的电路。

本产品符合IEC60947-4-1，GB14048.4标准。

CJX2交流接触器CJ X 2-□□ □□触头数量，用数字表示 10表示三常开主触头、 一常开辅助触头(32A及以下) 01表示三常开主触头、 一常闭辅助触头(32A及以下) 11表示三常开主触头、一常开一常闭辅助触头(40A及以上) 04表示四常开主触头、08表示两常开两常闭主触头(除18A、32A以外)基本规格代号，用380V、AC-3的额定工作电流数值表示 设计序号 小型 交流接触器 F4-□ □常闭辅助触头数量 常开辅助触头数量 辅助触头组F5-□ □0表示延时范围0.1s3s ~ 2表示延时范围0.1s 30s ~ 4表示延时范围10s 180s ~ T表示通电延时；D表示断电延时 空气延时头适用范围1型号及含义2系列侧挂式1常闭辅助触头1常开辅助触头设计序号辅助触头组交流接触器企业特征代号N C F 1-11C工作电压工作电流类别(A型适用于电流为09A 32A接触器，B型适用于电~流为40A 95A接触器)~设计序号浪涌抑制器SR 2 - □ / □3.1 周围空气温度为：-5℃+40℃，24小时内其平均值不超过+35℃。

~3.2 海拔高度：不超过2000m。

3.3 大气条件：最高温度+40℃时，空气的相对湿度不超过50%；在较低温度下可以允许有较高的相对湿度，例如20℃时达90%。

对由于温度变化偶 尔产生的凝露应采取特殊的措施。

3.4 污染等级：3级。

3.5 安装类别：Ⅲ类。

3.6 安装条件：安装面与垂直面倾斜度不大于±5°。

3.7 冲击振动：产品应安装和使用在无显著摇动、冲击和振动的地方。

䘀䄀䜀伀刀㈀　㄀㤀䰀䄀嘀䄀䜀䜀䤀伀 䈀䤀䄀一䌀䠀䔀刀䤀䄀 ⴀ 䰀䄀唀一䐀刀夀Switches, Push Buttons, Selectors12039115Z213033000Momentary push switch orange 22x30 mm16A 250V; faston 6,3x0,8 mm37446912024040120299111203108112111795R663031000RT30280551Z203050000Contactor K3-10ND10 190R TX4kW 3P; 200-240V 50-60Hz 400V - 3 cont.NO + 1 aux NO51717012024011Z213007000Mini contactor B7-30-10-F220-240V 40-450Hz; dim. 47x48x42,5 mm37388312024039Z743009000Contactor 3RT1016-2AP029kW 3P; 230V 50/60Hz 400V - 3 cont. NO + 1 aux NC37389212024075X183011000Contactor 3RT2024-1AL205,5kW 3P; 230V 50-60Hz 400V cont. 3 NO dim. 45x91x88 mm37573612041014Contactor 3RT2024-2AL205.5kW 3P; 230V 50/60Hz; 400V 1NO + 1NC; dim. 97x35x102 mm42629612024012Z683087000Contactor 3TF2001-3AL24kW 3P; 230V 50/60Hz; 400V 3 NO + 1NC37388412023706Z203062000Z683027000Relay 2 contacts NO 230V 50/60Hz 16A 250Vwith DIN bar adaptor37380412025218P620526000Snap action microswitch with lever 4,3X27 mm37431012025193R010534000Snap action microswitch with roller 16A 250Vleverage L=25 mm; 1 contact NO, 1 contact NC30583712024176Z273016000Limit switch microswitch 6A 250V IP6637393812032827DO1FB02230Magnetic microswitch M12x1 L=45 mm 1NO; 50W 1A; cable L=500 mm584470120244776021130029SAVW250030Z203009000Magnetic microswitch A061 1V NO 250Vac 0,004Abulb Ø 6x29 mm - cable L=240 mm37407712114100Magnetic switch M12x1 10÷30Vdc cable L=2000 mm42911912090513DO1DG11734Magnetic microswitch 230Vdim. 10x32x5,5 mm; cable L=500 mm43385512023211P613002000Door electromagnet 36Vdc cable L=100 mm373666120335784GH49G001Floating ball for level regulator Ø 69 mm INOX58344612024066Z203010000Magnet switch support dim. 34,5x19,5x8,5 mm37389912009985R010535000Plate for microswitch dim. 45x30x2 mm3730581203716512168683DO1DL14150Terminal board 4 mmq 600V 20A5844691202834812029280DO1AB01460DO4PRS0041Pressure switch 0,2mbar 1NC, 1NO; Pmax 150mbar5844661203202612049069DO1AB01439DO1AB01475Differential pressure switch 0,4-6 mbar374376120300051203818312147265Pressure switch 20...300 Pa5825251202386212031028120334726021050008RT31011008Z103066000Compact fan 120x120x38 mm - 20W 230V 50/60Hzno cable; faston connection 2,8x0,5 mm; 2550 rpm; ball bearing531364Motors121491601DC07288Gearmotor 3 phase 550W58520912087148DO1DC07056Gear FRC050 Ø 14/25 mm reduction rapport 1:30583604120275731204903412087150DO1DC07052DO1DC07055DO1DC07057Motor 3 phases 370W 230/400/460V 50/60Hzshaft Ø 14x30 mm58315512023189P645902000Motor 3 phases 3000W 230V 60Hz 3548rpm; cable L=260 mm37366212023194P635906000Motor 3 phases 2200W 230V 50/60Hz 2800rpm37366312024916P666014000Retaining ring Ø 125x150x12 mm RG37421712023457P666021000Shaft sealing Ø 125x150x12 mm VITON42281912147306Electromagnetically released spring breake 85W 205Vdc 235NM cable L=660 mm58385712041867Drain pump 30W 220/240V 50Hzinlet Ø 24 mm, outlet Ø 24 mm - Faston 6,3x0,8 mm459511Heating Elements12024214Z121741000Boiler heating elements 9000W 230V L=540 mm, triangular flange H=90 mm, with gasket37396012032899DO1AC02259Heating element 2000W 230Vdim. 540x45 mm; connection M12x1; faston 6,33743811202481612096226P613008000Heating element 2000W 230V UL dim. 265x65 mm; flange 81x28 mm; faston 6,3 mm42891312023247120960234XFP623005000P623005000SAVW130003SAVW130014Heating element 3000W 230V UL dim. 275x65 mm; flange 81x28 mm; faston 6,3 mm428918120232424XFP183002000P633002000Heating element 4000W 230V UL dim. 355x65 mm; flange 81x28 mm; connection M43736701202457712041359P533001000P6330111000Heating element 6000W 230V UL dim. 510x65 mm; flange 81,3x28 mm; faston 6,3 mm37410812024721Z129502000Boiler heating element 12000W 230VUL L=550 mm; triangular flange 92,5x89,7 mm; Øint. 60 mm; with bulb housing L=180 mm; connection M437416812024645Z203601000Tank heating element 2800W 230V dim. 365x102 mm; flange 70x18 mm37413312024282Z101723000Heating element cover Ø 63x67,5x55,3 mm373992Cables12025061P643005000Cable3742531214071212148198GHZ23C01Power supply cable L=4000 mm eyelet Ø 4,2 mm58370812023814P503025000Bi-metal thermostat NTC 50kohm3738421209501812096597Bi-metal thermostat 110° 250V 10A faston 6,3 mm4290161203243212032731DO1AG11130DO1DG11130Safety thermostat 1P 0÷90°Ccoated capillary L=3000 mm; bulb Ø 6x93 mm; D-shaft Ø 6x4,6 mm3743771209761112126296DO1DG11135Safety thermostat 1P 220°Ccapillary L=1900 mm, bulb Ø 6x58 mm, 16A 240V58258512023546Z953003000Gasket Ø 11x27x8,5 mm373738Drain valves12024781P302120000Electric drain valve N.O. 220/240V 50/60Hznormally open; inlet Øext 50 mm; outlet Øext 50 mm; overflow pipe Øext 35 mm; mod. MDB-O-23741891202626712147216SAVZOD0112SAVZOD0264Electric drain valve N.C.coil 230V 50/60Hz 0,20-0,17A; inlet Ø 76 mm; outlet Ø 80 mm; overflow pipe Ø 35 mm583854Drain valves12137690Electric drain valve N.O. 230V 50/60Hz Ø75,5 mm - Ø 79,5 mm42670912024404P532103000Electric drain valve N.O. 230V 50/60Hz 0,20-0,17Ainlet Ø 76 mm; outlet Ø 80 mm; overflow pipe Ø 35 mm37405212093146Air brake4299221070312025161Z701135000Solenoid valve 180° - 1 way - 220/240V 50/60Hz - Ø 10,5 mmwith fastons; inlet Ø 3/4" with filter; Tmax 90°C43540912023794P255001000Solenoid valve 180° - 2 way - 220/240V 50/60Hz - Ø 10,5 mmwith fastons; inlet Ø 3/4" with filter and reducer 14 lt/min; Tmax 90°C3738311202392112115418P443018000P443073000Z6111223000Z611123000Solenoid valve 180° - 3 way - 220/240V 50/60Hz - Ø 10,5 mmwith fastons; inlet Ø 3/4" with filter; Tmax 90°C2001211202408312097038P443042000Outlet pressure reducer 2,5 lt/min [brown-Inv]20011812041072Solenoid brass valve G1" - 4W 230V 50/60Hz43001112157686Electro-pneumatic valve 4/2dim. 3,5x1,8x51,5 mm583864Solenoid Valves and Reducers12028386QUINCA0161Solenoid valves 230Vac 50/60Hz 3/2 NC58386512023551Z102305000Solenoid body EV220B 3/4"L=90,5 mm37374012008907S205023000Nipple 1/2"÷1/2" - L=27 mm - brass51924912018536S102122000Rubber holder 1/2'' - outlet Ø 9 mm Ltot.=67 mm37343112009102Pipe fitting 90° 1/2"M58231412019829U565032000Rear left pipedim. 545x70xh95 mm37351312019731U565031000Rear right pipeØ4 mm; dim. 545x100x75 mm3735071202502612152912P630704000Formed hose 90°Øint.72 mm; dim. 400x130 mm45974712044165Formed hose Øint. 75 mm427755Hoses110000663702400000Hose EPDM Ø 5x12 mm L=2300 mm Tmax 110°C435233110000833676900003676900000S102121000Z271101000Z631121000Hose EPDM Ø 10x17 mm (sold by meter)Pmax 10 bar; working temp. -35°C÷110°C61236012024115Z602121000Rubber feeder hose 3/4" L=1500 mm straight connection + 90° plasticconnection; ring nut in nickel-plated brass Ø3/4"F; pipe Ø 13x19 mm; Pmax 10 bar;Tmax 90°C; WRC/WRAS/VDE approved52432412007747P634021000Drain pipe Ø 50x60 mm dim. 620x220x140 mm42311712023666Z220903000Drain pipe PPE Ø 19 mm 90°+ Ø 22 mm 180° L=2000 mmmuffs 180° Ø int/ext 19/24 mm, muffs 90° Øint/ext 22/27 mm, Øext hose 24 mm37072312022957Drain box58523112023537Z710708000Ring nut 1" 1/2H=15 mm; CH5037373712038179DO1SK00016Air filter Ø 260x430 mm374433Transmission components12023273P615902000V-ribbed belt L= 1300 mm 8 ribs37367912023269P625903000V-ribbed belt L=1600x18,8x3,5mm 8 ribs37367712007744P635908000V-ribbed belt L=1663x3,5x28,4 mm 12 ribs58303212049376V-ribbed belt L=1752x3,5x19mm 8 ribs42636812018841P645901000V-ribbed belt L=1854x3,3x19 mm 8 ribs37345812046375V-ribbed belt L=1992x3,5x28 mm 12 ribs42636612023249P646013000Drum pulley31965712023222P540702000Ice containerdim. 190x470x305 mm42339212128087Rep cierre ln-35dim. 800x765 mm428706Structural components12003389Z270337000Paneldim. 560x116x18,5 mm42199312023338P620504000Door handle 100x90 mm37368712147485Door handle58386112025202P620514000Shaft Ø 6x55 mm37430312023239P620527000Semicomp door. fagor 13.1837366812023347P620505000Hingeshaft Ø 6x15 mm37369112030807K005B50072Manometer Ø 62 mm 0 ÷ -1bar58495212010155Q302061000Snap ring Øint. 6x0,7 mm37313412009802Q301036000Snap-ring Øint. 103 mm37299812010103Q272020000Radial snap ring INOX Øest 9x0,8 mm43824512023427P620525000Ring Øint. 12,5 mm wire Ø 1,3 mm58200612025215P610506000Bush Ø 6x12x12 mm37430812025100P680511000Bushing Ø 16x22/28x25 mm42289912010251Q222012000Hexagonal nut M6x8 self-locking - INOX36294312009839Q162020000Hexagonal nut M4 - H=3,2 mm INOX CH736294012010284Q162030000Hexagonal nut M5 - H=4 mm INOX33704512010036Q881302000Hose clamp Ø 12÷22/9 mm - INOX43848012009997Q881305000Hose clamp Ø 25÷40/9 mm - INOX44169912009986Q881306000Hose clamp Ø 32÷50/9 mm - INOX43846412009962Q881307000Hose clamp Ø 40÷60/9 mm - INOX518655120009933Q881324000Hose clamp Ø 50÷70/12 mm - INOX43846312145377Support42727312009953Q242010000Tooth lock washer M358185912009928Q242020000Tooth lock washer Ø int.4/est.7,8 mm INOX37303812009872Q262040000Grower washer Ø 6,3 mm INOX35821112009944Q232030000Flat washer Ø 5,5x10x1 mm - INOX61277012010267Q302022000Flat washer Ø 6,3x15,7x1,2 mm37319912009868Q232040000Flat washer M6 Ø 6,4x11,6x1,6 mm INOX4326051201011012010268Q232050000Q302025000RT13080160Flat washer Ø 8,4x16x1,2 mm DIN125A37320012010235Q232060000Flat washer M10 INOX Ø10,6x20x2 mm32201512010278Q032021000Raised countersunk head screws M4x10 mm37320612010084Q052046000Cylinder head bolts M6x20 mm INOX37310112010226Q032031000Hexagon head screw TE M5x10 mm - INOX [10 pcs]52249712010221Q012032000Hexagonal head screw TE M5x16 mm - INOX [10 pcs]32626312010186Q011342000Q012042000Hexagon head screw TE M6x16 - INOX35811812010056Q012056000Hexagon head screw TE M8x40 mm - INOX [10 pcs]52268712010213Q032032000Flat-headed bolts TC M5x16 mm37317012010262Q042022000Countersunk screw M4x15 mm37319612009876Q151320000Sheet metal screws M4x6 mm37302212023360P666102000Bearing 125/70/3142282312023334P666101000Bearing Ø 105x190x36 mm422827120379971ED40207Bearing ucfc 207433323120039221203836412038446121278381215482213P620516013P6205310P620516000Door locking mechanism 205V dim. 180/220x100 x53 mm5824801202841112147483Door lock switch 220/240V 50Hz58386012021912P627816000Cover 120x50x2 mm58248112016778P620511000Pin for handleØ6x29 mm AISI 30337329012025182P620529000Unlocking pin Ø 7xLtot. 22,5 mm5820051202436112122779N103033000Thermostat knob Ø 72 mm D-shaft Ø 6x4,6 mm41525612024758P530503000Door glass Ø 385x55 mm37418412024250P440503000Door glass Ø 305x40,5 mm37398012024980P630111000Friction damper 140N Ø 28/185-295 mm RD10 - hole Ø 10,2 mm37423512025078P620126000Friction damper 90N Ø 28/185-280 mm37425812025077P620115000Friction damper 120N Ø 28/187-280 mm37425712147246SAV W08 0039SAVW080039Friction dumper 120N Ø 28/170-265 mm hole Ø 10 mm58385512025076P540201000P630110000Friction damper 250N Ø 28/170-300 mm hole Ø 10,2 mm37425612147247SAV W25 0006SAVW250006Friction dumper 250N Ø 28/190-280 mm hole Ø 10,2 mm5838561202349212049230P680220000Friction damper Ø 45,5xLtot. 330 mm hole Ø 10 mm42766512157708QUI NCA 0359QUINCA0359Shock absorber Ø 70xLtot. 345 mm42555112147399QUI NCA 0360QUINCA0360Gas friction dumper Ø 40x190/275 mm hole Ø 12 mm58385812147406Tension spring Ø 42x116xLtot200 mm58385912023383P620510000Spring closing37370112033583SPQ800622PFriction damper [KIT]374389Photocells1202809012147195Speed sensor M12x50 mm cable L=2000 mm58385312024424T133008000Screw M3x8 mm37405812025260T133007000Spacer L=16 mm M337432812023354P613019000Pcbdim. 235x140 mm37369312024197P613025000Pcbdim. 235x140 mm58185712025606Plc TWD LCAA dim. 70x95x90 mm58385212024780P613018000Pcbdim. 115x140 mm37418812017891P623017000Pcb with main switch dim. 50x30 mm3733831202649612147280ELEELE0089Pcbdim. 135x135 mm5852341203814712147287ELEELE0109Display board dim. 100x150 mm4333631211948812155387Display TFT 4,3"42678112043487PLC programmed 3kw (lr-25)42875612024634SAVW080104Z218030000Relay pcbdim. 75x35 mm37412812023112P640325000Pcb supportdim. 120x44x14 mm58185812023293P623026000Cable L=675 mm4533921212081512168823Pcbdim. 155x324 mm42968112024921P623023000Pcb LED37421812031344DO1DH12314Temperature probe L=175 mm bulbo Ø 4x10 mm; flange 17x10 mm42478112025036Z713028000Temperature probe NTC 64k oHm probe Ø 6x14 mm; -40 ÷ +110; cable L=300 mm3742501202948712147283ELEELE0098Temperature probebulb Ø 6x64 mm; cable L=2000 mm37435712120341Cable PTC with rectifier bridge582004Probes12024049N503017000Gasket Ø 23x35x7,5 mm3738951202672612127829DO1DC00001Inverter ABB 3P 370W 200/240V 6.1A5840111202613012026131DO1DC00003DO1DC00063Inverter ABB 3P 1100W 200/240V5844671202334312040601P623002000Inverter G110 1 phase 200/240V 47/63Hz 19,7Aoutput 3 phases 0-230V 0-550Hz 7,8A; 1,5kW 200/240; dim. 120x160x140 mm3736891203844213P6330050Inverter G110 1 phase 200/240V 47/63Hz 27,2Aoutput 3 phases 0-230V 0-650Hz 11A; 2,2kW 200/240V31783412018961P610319000Membrane keypads 640x160 mm37346412023797Z468001000Membrane keypads 45x400 mm37383212023260P636108000Gasket373675Gasket for laundry1200776712024455P440502000P610508000Oblò gasket Ø 247x305 mm37406512023284P620528000Door gasket Ø 395 mm37368012023475P660535000Oblò gasket Øext. 590x33,5 mm37371712147521Drum gasket583862O-rings12009912Q307036000O-ring 1,78x5,28 mm EPDM37303112009926Q307077000O-ring 3,00x128 mm3730371209314512122182O-ring 3,53x24,99 mm NBR410444120100401211831912154789Q307044000O-ring 5,34x56,52 mm NBR435067Flat gaskets12025148P636005000Flat gasket Ø 114x160x4,3 mm374280Laundry parts1203490812147375QUINCA0086Ironing band 105x410 mm37439610222010261202944612147376QUINCA0087Ironing band 200x1660 mm3743561203717712037305DO1KA00422QUINCA0091Polyester/Meta-Aramid guide tape 13mmx10mt Tmax 230°C331471120346231214737712147908121562021BE03500QUI NCA 0088QUINCA0088Self-adhesive elastomere strip for ironers (sold by meter))3294271202775712149876GR10003000Steel wool band width 100 mm [8 Kg]317321120299561214741412150171QUINCA0476Plush clothing 2020x495x3 mm374362。

第一节　继电器原理知识一、继电器的定义继电器是一种当输入量（电、磁、声、光、热）达到一定值时，输出量将发生跳跃式变化的自动控制器件。

继电器是具有隔离功能的自动开关元件，广泛应用于遥控、遥测、通讯、自动控制、机电一体化及电力电子设备中，是最重要的控制元件之一。

继电器一般都有能反映一定输入变量（如电流、电压、功率、阻抗、频率、温度、压力、速度、光等）的感应机构（输入部分）；有能对被控电路实现“通”、“断”控制的执行机构（输出部分）；在继电器的输入部分和输出部分之间，还有对输入量进行耦合隔离，功能处理和对输出部分进行驱动的中间机构（驱动部分）。

作为控制元件，概括起来，继电器有如下几种作用：1)扩大控制范围。

例如，多触点继电器控制信号达到某一定值时，可以按触点组的不同形式，同时换接、开断、接通多路电路。

2)放大。

例如，灵敏型继电器、中间继电器等，用一个很微小的控制量，可以控制很大功率的电路。

3)综合信号。

例如，当多个控制信号按规定的形式输入多绕组继电器时，经过比较综合，达到预定的控制效果。

4)自动、遥控、监测。

例如，自动装置上的继电器与其他电器一起，可以组成程序控制线路，从而实现自动化运行。

二、继电器的工作原理如图所示，当控制电路中的开关K闭合时，电磁铁便具有磁性，将衔铁吸下，使继电器触点接触，与触点相连接的电源电路便接通；当控制开关K断开时，电磁铁的磁性被撤消，继电器触点弹开，电源电路亦随之断开。

三、继电器的继电特性继电器的输入信号x从零连续增加达到衔铁开始吸合时的动作值x x,继电器的输出信号立刻从y=0跳跃到y=y m,即常开触点从断到通。

一旦触点闭合，输入量x继续增大，输出信号y将不再起变化。

当输入量x从某一大于x x值下降到x f,继电器开始释放，常开触点断开（如图1）。

我们把继电器的这种特性叫做继电特性，也叫继电器的输入-输出特性。

释放值x f与动作值x x的比值叫做反馈系数，即K f= x f /x x触点上输出的控制功率P c与线圈吸收的最小功率P0之比叫做继电器的控制系数，即Kc=P C/P0第二节．继电器的分类继电器的分类方法较多，可以按作用原理、外形尺寸、保护特征、触点负载产品用途等分类。