Siemens ILE0001 Series AC Motor

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Q:How large AC contactor and thermal relay should be used for the motor of 3KW? There are steps to calculate better.
1, Y-100L-4 type 3KW motor rated current is 6.4A, can also be obtained by formula: (power factor cos Phi about 0.7)I = P/ (root 3 * U * cos (3000/) = 1.732 x 380 x 0.7) = 6.5 (A)2 "AC contactor selection: general and motor current is available, but in actual use, the contact is easy to burn, choose more than the motor current double the more durable, should choose CJX2-1210 (12A).".3 "thermal relay setting current: choose regulating current range of 5 ~ 9A thermal relay, the setting current is 1.1 times the rated current of the motor (7A).
Q:Why do motors need capacitance when they start?
A positive reverse circuit. The switch hits the top. "Yes" is to string the capacitor to the coil below. The switch "hit" below is the series of capacitors connected to the coil above. There is no need to consider the capacitor charging problem.
Q:What is the difference between the excitation winding and armature winding of AC motor?
The field winding is winding excitation magnetic field and armature winding is winding AC output power, DC excitation for synchronous generator, the rotor winding is winding of generator stator winding and armature winding is the generator.
Q:Relation of voltage, speed, voltage and torque of single phase AC motor
Motor power: P=1.732 * U * I * cos PhiMotor torque: T=9549 * P/n;Motor speed: n=60f/p, P for the motor pole count, such as four motors p=2;Note: when the frequency reaches 50Hz, the motor reaches the rated power, and then increases the frequency, the power will not increase, and will maintain the rated power.The motor torque is less than 50Hz, is proportional to the variation with frequency of F; when the frequency reaches 50Hz, the motor reaches the maximum output power is rated power; if the frequency of F in 50Hz and then continue to increase, the output torque is inversely proportional to the frequency change, because its output power is so big, you have to continue to increase the frequency of F, then the formula set in the above analysis, the torque is obviously reduced.
Q:Main structure of AC motor
Rotor: rotating shaft: Acting output torque. Rotor iron core: the silicon steel sheet which is insulated from each other is pressed on the rotor shaft, and there is a groove on the outer circle of the silicon steel sheet. For embedded rotor winding. Guide slot. Rotor winding: there are two kinds: one is squirrel cage, the other is winding type.
Q:What is the difference between AC motor speed and DC motor speed?
Because the exchange is easier to obtain, easier to transport, so at present we use most of the electric machinery is AC motor driven, AC motor applications more widely.
Q:Difference between energy consumption braking of DC motor and AC motor
Energy consumption braking is a form of braking.It is divided into DC motor energy consumption braking and AC motor energy consumption braking.
Q:How to choose the AC motor?
The motor is nothing more than the source of mechanical power and speed. The speed and power required for the operation of the equipment can be calculated and the model can be selected.
Q:Isn't the starting winding symmetrical? If it's symmetrical, it's also an alternating pulsating magnetic field, how can you drive the rotor?
Because the magnetic field will not rotate (single phase winding and three-phase current phase difference of 120 DEG to produce a rotating magnetic field, so the starting winding), the working principle is in the starting winding current is generated through nearly 90 degrees of the magnetic field produced by a capacitor, the rotating magnetic field.
Q:Why does the AC motor turn?Do I feel that the coil is not in a steady state?
Through the above analysis can be summed up as follows: when the working principle of the motor stator winding of the motor (three of the difference between the 120 electrical degrees), into three alternating current, will produce a rotating magnetic field, the rotating magnetic field cutting rotor windings, thus the induced current in the rotor winding (the rotor winding is a closed path). The rotor conductor carrier will produce electromagnetic force in the stator rotating magnetic field, so as to form the electromagnetic torque of the rotating shaft of the motor and drive the rotation of the motor and the motor rotation direction and rotation direction of the magnetic field.

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