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introduction：The main reason for fan motor heating is mechanical failure、Winding unbalance、Over duty。Fan motor heating，First, measure the current，Generally, the normal use of current is rated current80%around。So touch the motor heat，What should we do？
2017-02-10 Reading quantity 370
introduction：45Steel is medium carbon structural steel，Both hot and cold processing properties are good，Good mechanical properties，And the price is low，Widely sourced。Its biggest weakness is its low hardenability，Workpiece with high cross-section size and requirements should not be used。
2017-02-09 Reading quantity 385
introduction：1Road,5VRelay module instructions 1、The same module can realize high voltage or low level triggering through different wiring，Trigger current is not less than1mA，section51Single chip microcomputerIOThe output capacity of the mouth is weak，Need to pull up or increase the drive capacity circuit(The default is low level trigger)。 2、Advantages of low level drive，When the system is powered on and reset，Load will not work，High security。 3、Control voltage：3VDC~12VDC(By default5VControls)，Optocoupler isolation，The control voltage can be separated from the drive voltage，Realize dual power supply，Improve the ability to interfere； 4、Controlled voltage：The highest250VAC、30VDC； 5、Each group of relays is normally on、One set of normally closed contacts，Maximum permissible10A/250VAC；
2017-02-09 Reading quantity 463
introduction：Motor from design、Take measures in materials and processes，For example, use reasonable determinations、Number of rotor slots、Fan parameters and sine winding and other measures，Reduce losses，Efficiency can be improved2%——8%，Average increase4%。2002years，China motor total capacity approx400GW，midmost80%for...
2017-02-09 Reading quantity 401
introduction：It is known from the working principle of electromagnetic speed regulating asynchronous motor，Speed regulation of induction motor with electromagnetic speed regulation，This can be achieved by adjusting the excitation current of the slip clutch。The following describes two circuits that regulate the excitation current of slip clutches。
2017-02-09 Reading quantity 363
introduction：This paper mainly introduces the hydraulic parts of construction machinery?Status quo，?Automaticity in construction machinery Application in chemistry?，Intelligent transformation and application of traditional hydraulic components，The characteristics and application of hydraulic components。??
2017-02-08 Reading quantity 393
introduction：When a normal motor is powered by frequency conversion，The harmonic weight of voltage and current at the output end of the inverter will increase the loss of the motor、Power drop、Temperature rise。
2017-02-08 Reading quantity 381
introduction：The common steps of the pump motor are wrong
2017-02-07 Reading quantity 365
introduction：peculiarity： Be most characterized by2ASmall polar relay for on-off area。 Contact composition2c MaterialsAg(Auclad) Contact actionBBM Maximum control capacity（Electric current）2A Maximum control capacity（voltage）30VDC Minimum applicable load（Reference value）10microA10mVDC Self-holding typeSinglesidestable Coil rated voltage12VDC Rated power consumption400mW RP1-H-6V,RP1-H-9V,RP1-H-12V,RP1-H-24V,RP1-1.5V,RP1-3V,RP1-4.5V,RP1-5V,RP1-6V, RP1-24V,RM2-3V,RM2-4.5V,RM2-5V,RM2-6V,RM2-9V, RM2-12V,RM2-24V,RK1-L2-3V,RK1-L2-4.5V, RK1-L2-5V, RK1-12V,RG1-6V,RG2-L2-3V,RG2-48V,NR-HL2D-12V,NR-SD-12V,NR-HD-5V,RP1-H-9V,NAIS,RK1-L2-6V, RK1-L2-9V,RK1-L2-12V,RK1-L2-24V,RK1-3V,RK1-4.5V, RK1-5V,RK1-6V,RK1-9V, RK1-24V,RG1-L
2017-02-07 Reading quantity 302
introduction：Relays have the following basic precautions in use： 1)The use of relays should be combined with the various parameter ranges listed in the product manual as far as possible 2)Rated load and life are a reference value，It depends on different environmental factors、The nature and type of load are quite different，Therefore, it is best to confirm in real or simulated real use。 3)Dc relays use rectangular wave control as much as possible，Ac relays use sine wave control as much as possible。 4)To maintain the performance of the relay，Be careful not to let the relay drop or be subjected to strong shocks。Outdated relays are not recommended for use。
2017-02-07 Reading quantity 296
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