danfoss kp71 温度开关内部结构图

1、Data sheetPressure and temperature switches, type KPFeaturesSpace-saving, easy to install in panelsShock and impact resistantUltra-short bounce time.Limits wear to an absolute minimum and increasesreliabilitySnap action electrical contacts minimize chatter,bounce, and wear, and ensure long term elec

2、trical andmechanical reliabilityElectrical connection from front of the unit.Makes rack mounting easier and also saves spaceSuitable for alternating current and direct currentManual trip allows electrical function test withouttoolsVersions with automatic and manual reset availableContentsPressure sw

3、itches KP 34, KP35, KP36 and KP37PageFeatures 1Contents 1Description 2Approvals 2Ordering 2Technical data2Contact system and application 2Setting 3Terminology 3Design and function 4Dimension and weight4Temperature switches KP79 and KP81Features 5Description 5Approvals 5Ordering 5Technical data5Conta

4、ct system and application 6Design and function6Setting7Terminology 7Charge 7Dimensions and weights 8Accessories for KP pressure and temperature switches8IC.PD.P10.L3.22 - 520B3031Pressure switches type KP34, KP35, KP36 and KP37The pressure switches are with single-polechangeover switch (SPDT). The p

5、osition of theswitch depends on the setting of the pressureswitch and the pressure in the connector.CE marked in accordance to EN 60947-4/05 .Pressure switches, type KPRangepsigDifferentialpsiTypeResetCode nos060-214966060-214866060-215166060-215066060-214466060-214566060-214666060-214766AutomaticMa

6、nualAutomaticManualAutomaticManualTechnical dataSingle pole changeover switch (SPDT)Contact material AgCdOContac loadParts in contact with medium:Bellows: stainless steelPressure connection: free-cutting steel,nickel plated240 VDC: 12W pilot dutyCable entryIntegral in. female NPSM swivel cableconnec

7、tor, allows direct attachenments of in.male pipe thread connectorSwitch type - single pole double throw1. Terminals 1 - 4 close high and open lowTerminals 1 - 2 can be used as low pressure alarm1. Low pressurecut-out2. Terminals 1 - 2 open high and close lowTerminals 1 - 4 can be used as high pressu

8、re alarm2. High pressurecut-out2IC.PD.P10.L3.22 - 520B2557Pressure switches type KP34, KP35, KP36 and KP37Pressure switches with manual resetSet the cut-out pressure on the RANGE scale.Pressure limiters can be manually reset bypressing reset button when the pressure is equalto the cut-out pressure m

9、inus ed value of theSet pointFLA -Motor Full Load AmperesThe current rating, in amperes, of the motor when afull load is applied to it for work being done.LRA - Locked Rotor AmperesThe current drawn, in amperes, by an electric motorwith the shaft or rotor stopped and locked inposition.A unit with ma

10、nual reset can only be restored tooperational mode by activation of the externalreset button.2. Automatic resetA unit with automatic reset is restored tooperational mode automatically.Maximum working pressureThe maximum permissible pressure for safefunctioning of a heating system or any of its part.

11、Snap functionA contact force is maintained until snap isinitiated. The time over which contact forcereaches zero is a few milliseconds; therefore,contact bounce cannot occur as a result, forexample, of slight vibrations before cut-out.The snap-action contact system will continue tofunction even when

12、 micro-welds are createdbetween the contacts during cut-in.cut-in action.IC.PD.P10.L3.22 - 520B25573Pressure switches type KP34, KP35, KP36 and KP374. Main spring5. spring6. BellowsKey sketch of KP pressure switch d drawing of KP pressure switch without frontcover and scale. Version with manual rese

13、t.Dimensions and weightKP 35, KP 36 and KP37(all dimensions in inches)Approximate weight: 0.83 lbKP 34 pressure switch(all dimensions in inches)Approximate weight: 0.9 lb4IC.PD.P10.L3.22 - 520B2557Pressure switches type KP34, KP35, KP36 and KP37 Wide regulating rangeSpace saving, easy to install in

14、panels Shock and impact resistant Ultra-short bounce time Snap action electrical contacts minimizechatter, bounce, and wear,and ensure long term electrical andmechanical reliability Electrical connection at front of the unit.Makes rack mounting easier and save space. Suitable for both alternating an

15、d direct current Screwed wiring, makes rewiringeasy Manual trip allows electrical functiontest without the tools Version with automatic and manual resetavailableDescriptionDanfoss KP temperature switches are used forregulating, monitoring and alarm systems inindustry.The position of the switch depen

16、ds on thethermostat setting and sensor temperature.A KP thermostat can be connected and switch tosingle-phase alternating current motors of up to2 kW.KP thermostats are temperature-operated electriccircuit breakers. The thermostats are withsingle-pole changeover switch (SPDT).ApprovalsOrderingCE mar

17、ked in accordance to EN 60947-4/-5 .Temperature switches, type KPDifferentialFTypeCode number9 to 2710 fixed9 to 2710 fixed9 to 4516 fixedAutoManualAuto060L223866060L223966060L224266060L224366060L224066060L224166ManualAutoManualTechnical dataIntegral in. female NPSM swivel cableconnector, allows dir

18、ect attachenments of in.male pipe thread connectorWire dimensionSPDT single pole double throwContact loadAlternating current240 Vdc: 12 W pilot dutyIC.PD.P10.L3.22 - 520B25575Pressure switches type KP34, KP35, KP36 and KP371. Terminals 1 - 4 close high and open low 1. Low temperature cut-outTerminal

19、s 1 - 2 can be used as lowtemperature alarm2. Terminals 1 - 2 open high and close low 2. High temperature cut-outTerminals 1 - 4 can be used as hightemperature alarm4. Main spring5. spring6. BellowsKey sketch of KP79, KP81 temperature switchesThe contact system of KP switches has a snap-action funct

20、ion and the bellows moves onlywhen cut-in or cut-out set point is reached.The design has the following advantages:- higher contact load d drawing of KP temperature switchwithout front cover and scale.Version with manual reset.6IC.PD.P10.L3.22 - 520B2557Temperature switches type KP79 and KP 81Tempera

21、ture switches with automatic resetTemperature switches with manual max. resetSet the cut-out temperature on the RANGE scale and Set the cut-out temperature on the range scale.The is ed.Restart the system by pressing the reset button afterthe temperature of the sensor falls to a value equal tothe ran

22、ge scale setting minus the ed units with manual reset can only be restartedThe is necessary for satisfactoryautomatic operation of the controlled system.Mechanical (intrinsic after activation of the reset button. On max.reset units the set value is equal to cut-outvalue for rising temperature.These

23、units are automatically reset afteroperational stop.Snap functionA contact force is maintained until snap isFLA - Motor Full Load Amperesinitiated. The time over which contact force reaches FLA is the largest current that a motor or other de-zero is a few milliseconds; therefore, contact bounce vice

24、 is designed to carry at rated voltage and otherdue to vibration, for example, cannot occur at cut-out. conditions. Also often called current at ratedconditions.LRA - Locked Rotor AmperesLRA is the current in amperes drawn by an electriccreated to separate the contacts is strong enough to motor with

25、 the shaft or rotor immobilized.instantly shear contact surface welds that mayhave been created by cut-in action.ChargeSensors with adsorption charges contain a super-heated gas together with a solid having a largeadsorption surface. The sensor can be placed in zonesAdsorption chargethat are warmer

26、or colder than the switch housingand capillary tube, but variations of more than +70Fmay ence scale accuracy.BellowsIC.PD.P10.L3.22 - 520B25577Data sheetPressure and temperature switches type KPDimensions and weightsSensor of KP79/ KP 81,Material: tinned copperCuSn5PartDescriptionCode no.Accessoriesfor KP pressure andtemperature