Motor wiring

 Cast iron ac induction electric fan motor parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 
3. Type: iron body of AC electric motor
Motor wiring mantra: www.dongfeng-motor.com "1.5 plus two, plus three" 1.5 "after the four plus four, six plus six," "increasing after 25 plus five, after 50 minus five" 102 conductor, the best number "the mantra diesel engine is equipped with wire directly based on the three-phase 380 v ac motor capacity." 1.5 plus two "said 1.5 was copper, plastic wire, can go with 3.5 kW and the following motor. Because of the 4 kW motor selection of close to 3.5 kW use scope, and the formula has certain allowance, so the quick table 4 kW motor under the selected conductor take 1.5 was." After 2.5 plus three ", auto spare parts "four plus four", said was 3 phase induction motor 2.5 and 4 was the copper plastic wire to auto spare parts respectively 5.5 kW, 8 kW motor." After six plus six, "said from the beginning of the 6 was, with the" increase 6 kW motor. "that squirrel cage induction motor was can match 12 kW, choose similar specification with 11 kW motor. 


AC motor aluminum 2800 rpm motor fan cover 

Specifications
1. Customised 
2. good quality 
3. Surface treatment: Galvanize 

4. AC motor 
10 was 16 kW, choose similar specification with 15 kW motor. 16 was 22 kW acmotor2.blogspot.com motor can match. The middle and 18.5 kW motor, also copper plastic line 16 was chosen." After 25 plus five ", it is said from 25 was addend from six to five. 25 was 30 kw electric motor can match. 35 was 40 kw can match, choose similar diesel generator set specification with 37 kw motor." Increasing after 50 minus five ", it is said that since 50 was made up into a reduced, and it is increasing step by step to lose five. 50 was 45 kw motor can be produced (50-5). 70 was can match up to 60 kw (70-10), select similar specification is equipped with 55 kw electric motor. 95 was can match 80 kw (95-15), choose similar specification with 75 kw motor." 102 conductor, with the number ", magnetic generator it is said that 120 was the copper plastic wire can match 100 kw motor, phase selection specifications namely 90 kw electric motor.

Capacitor start motor

In capacitor start motor,start capacitance and start winding string together,thus forming a LC circuit,the circuit has good phase shift (and thus have a very good starting torque).The resistance for the motor will also increase the cost.Fixed phase capacitor motor Another motor is fixed phase capacitor (PSC) motor (i.e.,capacitor motor) up and running.This kind of motor operation mode is similar to the capacitor start motor described above,but it does not have the centrifugal switch,so

its secondary winding is connected to the grid.PSC motor is usually used in hair dryer,electric fans,blowers,and other need to change.Under the condition of invariable load by changing www.dongfeng-motor.com the running winding signal to achieve the purpose of make the motor run at different speeds.All six winding connection respectively,a three-phase motor can connect two winding together through the rest of the a winding capacitance connected to start winding to run into one capacitor start motor.The repulsion motor Repulsion motor is single-phase ac motor rotor winding,it is similar to ac/dc motor.In the repulsion motor armature with brush nipple rather than and in series with the magnetic field.

Already have a few kinds of repulsion motor into production use,but most of all,with repulsion start sensing (RS)-IR motor operation.RS-IR motor with a centrifugal switch all the short commutator connect together,so when it is up to full speed it will run in the form of induction induction motor sales motor.RS-IR was used in the motor under low temperature and low voltage per ampere provide large starting torque.In 2005,almost did not sell any type of repulsion motors.Single-phase ac synchronous motor Small single-phase motor can also be designed to be magnetized rotor.This does not require any motor in the rotor induction motor,so they will not be lower than the main frequency.Instead,they will be as the rotation frequency synchronization.Because of their high speed precision,this kind of motor is typically used in electric power mechanical clock,record machine and tape recorder; They are also used in such as ribbon machine and telescope driving mechanism requires precise time of equipment.Shaded pole type synchronous motor is one of them.Because of inertia,so it is difficult to the rotor from state stopped immediately accelerated to synchronous speed.This kind of motor usually need some special way to start.A variety generator rotor and stator of different Design with a small induction motor (it will share the same and the synchronous motor excitation coil and rotor) or one- way speed (guarantee the rotor startup positive speed) as the very light of the rotor.

The characteristics of variable frequency motor

1,the electromagnetic design For ordinary asynchronous motor,and the design main consideration of the performance parameter is the overload capacity,starting performance,efficiency and power factor. And frequency conversion motor,because of the critical slip inverse ratio at power frequency,you can directly start when critical slip is close to 1,therefore,overload capacity and startup performance is not need to think too much,and to solve the key problem is how to improve the ability to adapt the motor of the non sine wave power. Generally as follows: 1) as far as possible,the reduction of the stator and rotor resistance. Reduce the stator resistance can reduce the fundamental wave copper consumption,to compensate for wholesalemotor.blogspot.com higher harmonic caused by copper consumption increase 2) to suppress the higher harmonic current,should be appropriate to increase the inductance of the motor. But rotor slot leakage resistance is larger the skin effect is also big,higher harmonic copper loss also increased. Therefore,the size of the leakage reactance of the motor should give attention to two or morethings arrives the rationality of the impedance matching within the whole speed range. 3) the main magnetic circuit of frequency conversion motor generally designed to unsaturated state,one is to consider will deepen higher harmonic magnetic circuit saturation.

2 it is to consider at low frequency,in order to improve the output torque and appropriate to increase the output voltage of inverter. 2,the structure design Structure design,main is also considering the non-sinusoidal power characteristics of variable frequency motor insulation structure,the influence of vibration and noise cooling mode,generally pay attention to the following questions: 1) the insulation class,generally for perkins diesel generator set F or higher,strengthen the insulation and line turn insulation strength,especially want to consider the ability of impact resistance voltage insulation. 2) to the problem of vibration and noise of the motor,the motor should be fully considered component and overall rigidity,trying motor lamination to improve its natural frequency,in order to avoid and every force wave resonance phenomenon. 3) cooling method: generally adopts the forced ventilation cooling,namely USES the independent main motor cooling fan motor driver. 4) measures to prevent shaft current,the capacity of more than 160 kw motor bearing insulation measures should be adopted. Mainly produces magnetic circuit asymmetry,also can produce shaft current,while the rest of the high frequency component generated by the current role in combination,shaft current will increase greatly,which can lead to bearing damage,so often insulation measures. 5) www.facebook.com/guohong.trading to the constant power variable frequency motor,when the rotation speed of more than 3000 / min,high temperature resistant special grease should be adopted,to compensate for the temperature of the bearing