Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor
Specifications
Specifications1.3-phase asynchronous motors
2.IEC standard
3.OEM
4.Voltage:50HZ &60HZ;380V&415V
5.Protection class: IP54

Measuring the zener diode: we usually used regulator tube voltage value is generally greater than 1.5 V,and pointer table R x 1 k resistance is to use in the table below 1.5 V batteries,so,measured with resistance R x 1 k under voltage regulator tube like measuring diode,with full of unidirectional conductivity.But the R x 10 k file pointer motor magnet table is made of 15 v or 9 v batteries,with R x 10 k test voltage value is less than 9 v and 15 v voltage regulator tube,reverse resistance would not be up,but has a certain value,but the value is significantly higher than that of positive resistance regulator tube.So,we can preliminarily estimate the stand motor run capacitor or fall of voltage regulator tube.But,good regulator tube have a precise voltage value,amateur conditions how to assess the voltage value? Is not difficult,to find a pointer table is ok.Method is: put a watch at first R x 10 k file,the black,red pens and respectively in the cathode and anode voltage regulator tube,then simulate the electrical motor real working state of the voltage regulator tube,then take another watch on voltage profile V x 10 V or V x 50 V (according to the regulated value),will be red,black pens and respectively by receiving the watch just now black,red pens and,at this time to measure the voltage value is basically the voltage value of the voltage regulator tube.Said "basically",because the first block of the voltage regulator tube bias current relatively normal when using the electricalmotor1.blogspot.com offset current is a bit smaller,so the measured voltage value is slightly larger,but the basic.This method can only estimate voltage value is less than the pointer table high voltage battery voltage regulator tube.If the voltage value of the voltage regulator tube is too high,can only use plus method to measure the power of the (so,when we choose a pointer table,choose high voltage battery voltage is 15 v more applicable than 9 v).

Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor
Specifications
Specifications1.3-phase asynchronous motors
2.IEC standard
3.OEM
4.Voltage:50HZ &60HZ;380V&415V
5.Protection class: IP54

Now most common triode is powder coating,how to accurately judge the triode three pin which is b,c,e? Triode b very easily measured,but how to judge which is c which is e? Here recommends three methods: the first method: for measuring triode hFE jack pointer table,first measure b pole,throw triode plug into motor vehicle spare parts the socket (b,of course,is very can plug accurate),measure hFE value,then the measuring tube upside down again,the measured values of hFE larger one,each pin insertion position is correct.The second method: to measure without hFE jack table,or is not convenient to insert the socket pipe is too big,can use this method: of NPN transistors,first measure b (the pipe is NPN and PNP b and its feet are easy to measure,isn't it?) ,put table in R x 1 k Ω gear,to connect the red pens and hypothetical e very (note that take the hand don't run into table of red pens and pen or pin),the fan motor black pens and answer the hypothetical c,at the same time hold the table with his fingers tip and the pin,will pick up the pipe,with the tip of your tongue lick a b,the header pointer should have a certain amount of deflection,if all the pens and you answer correctly,the pointer will be bigger,if wrong,the pointer will be smaller,the difference is obvious.Which can determine pipe c and e.For PNP transistors to black pens and answer the hypothetical e very (hand don't touch the tip or pin),red pens and answer the hypothetical c,at the same time hold the table with his fingers tip and the pin,and then use the tip of the tongue lick a b,if the pens and correctly,header pointer will deflection is larger.Of course when measuring the pens and to discuss the test twice,comparative reading before final decision.This method applies to all appearance triode,convenient and practical.According to the clock deflection amplitude,but also can estimate the pipe amplification ability,of course it is by experience.The third method: first to determine the pipe after the NPN and PNP type a and b,put table at R x 10 k Ω,of NPN transistors,the black pens and connect e,red pens and pick up c extremely,the clock may have some deflection,the PNP transistors,electricalmotor1.blogspot.com black pens and c extremely,red pens and pick up e very,whose hands may have a certain amount of deflection,which in turn would have deflection.This can also determine triode c and e.But for the high pressure pipe,this method is not applicable.

Squirrel-cage motor direct total pressure of the large current when starting the motor stator coil and produce very big impact,rat cage bar damage caused squirrel-cage winding insulation and faults,cause 8500w gasoline generator motor failure; Large current will produce a lot of heat,winding insulation damage,reducing the life of the motor.Can be used to increase the power distribution capacity or limitation of motor starting current method to solve the above problems.If only increase the distribution capacity for starting motor,it is not economic.Therefore,usually equipped with limit starting device of generator generator set motor starting current.The commonly used methods are: 1) the stator cascade reactor or resistance starting.Stator reactance starting,reduces the starting current,but also reduces the starting voltage and starting torque is reduced more.Therefore,stator reactor step-down starting applies only to the electrical motor light load motor starting. 2) ya a delta step-down starting.Ya a delta step-down starting is also applicable to the light load motor starting,and limited to the normal operation of delta connection of the motor.Louboutin leather plant low pressure air compressor motor is to use this way. 3) the autotransformer step-down starting.Using autotransformer step-down starting,compared with the direct starting,starting voltage reduced a lot (for the rated voltage of 1/4,1/7),and the starting torque to reduce more; And autotransformer is wholesalemotor.blogspot.com not allowed to frequent starting,which limits its wide use. 4) yanbian triangle step-down starting.Yanbian triangle is made after the starting of motor,tap can't change,limiting the application of yanbian triangle starting method.These belong to step decompression starter,start-up mode and obvious shortcomings,namely the secondary impact appeared in the process of starting current.

If the three-phase squirrel cage induction motor,remember is 4 ~ 7 times,but not absolute. But the general requirements of ac induction motor 110kw the motor starting current is no more than the rated current of 2 ~ 5 times. Motor power for more than 30 kw motor is not suitable for frequent start,because more than 30 kw motor starting current is rated current commonly 6 to 12v mini generator motor 7 times,frequent can increase the motor temperature rise,may cause burning motor.Dc motor starting current formula Ist = (Un - Ea)/Ra,n = 0 when starting the armature voltage Ea = magnetic generator an nCe Ф = 0,and Ra is constant,so the rated voltage directly add to both wholesalemotor.blogspot.com ends of the armature,current can reach 10 ~ 30 times the rated current,therefore,usually only a small power dc motor can be used directly to start,the rest are not allowed to start directly.

Y2 series electric motor wholesale
Specifications
1. effiency: IE2 and IE1
2. 20 years manufacturing experience
3. 12 months guarantee
4. low noise and vibtration
5. AC Voltage: 220V/380V, 380V/660V,400V/690V,220V/400V
There are two 0.75 KW... Grade 4... 380 v... The motor.. No-load current is between 2.3 to 2.6... Work environment textile... 'a lot... Rated current of the motor is only 2.2... Normal no-load current is www.dongfeng-motor.com around 1.6... Time machine completely under the condition of no load over current... Due to the current big. So high temperature sharply born... Will soon.. Overheating damage... Please say the reason... thank you Problem complement: I thank two answer first... Disease, spare parts and together, the two are not normal before.. In a few years later. You'll find the bad one current is increased. [. Repair of the motor are friends. Eliminate offline ribbon..] ... Until now, with or without load... Motor current is bigger... Last year when the motor current in 2.0 A... Now 2.4-2.5 A... Motor ac motor shaft sleeve inside and outside in good condition... Have not completed... Don't go... Just electric pilot time to run the old hot... Often the temperature in fan cover the 60-80 degrees... Wiring is right... Are the normal installation...