Siemens EX Series Motor
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- Q: elctrical machines
- An induction motor or asynchronous motor is a type of alternating current motor where power is supplied to the rotor by means of electromagnetic induction. An electric motor turns because of magnetic force exerted between a stationary electromagnet called the stator and a rotating electromagnet called the rotor. Different types of electric motors are distinguished by how electric current is supplied to the moving rotor. In a DC motor and a slip-ring AC motor, current is provided to the rotor directly through sliding electrical contacts called commutators and slip rings. In an induction motor, by contrast, the current is induced in the rotor without contacts by the magnetic field of the stator, through electromagnetic induction. An induction motor is sometimes called a rotating transformer because the stator (stationary part) is essentially the primary side of the transformer and the rotor (rotating part) is the secondary side. Unlike the normal transformer which changes the current by using time varying flux, induction motors use rotating magnetic fields to transform the voltage. The current in the primary side creates an electromagnetic field which interacts with the electromagnetic field of the secondary side to produce a resultant torque, thereby transforming the electrical energy into mechanical energy. Induction motors are widely used, especially polyphase induction motors, which are frequently used in industrial drives. Induction motors are now the preferred choice for industrial motors due to their rugged construction, absence of brushes (which are required in most DC motors) and—thanks to modern power electronics—the ability to control the speed of the motor.
- Q: Hey, i know the difference between ac and dc motors but i still don't know when to use them. I mean, when is it wiser or better to use DC over AC motors and vice versa? In what applications is one above the other?Hope you can help me in my problem. Thnx XD
- If the motor needs to be battery powered, use a DC motor or a brushless DC motor. Otherwise use an AC motor. If the motor needs variable speed operation, consider a brushless DC motor. However, a brushless DC motor may be more expensive than an AC motor or may not be available if the power rating is more than a few kW (horsepower). Universal motors are nearly the same thing a series DC motors and are used in vacuum cleaners, blenders and some other appliances. They can have multiple speeds and variable speed control. They can operate above the 3600 RPM limit for AC motors connected directly to 60 Hz power. Brushless DC motors may make universal motors obsolete depending on comparative cost. DC motors with commutators are generally less efficient, less reliable, more expensive, larger and heavier than AC motors and brushless DC motors with the same speed and torque ratings. They have been disappearing at a steady pace over the past 20 years or so.
- Q: What are the stator and rotor functions of an alternating current motor?
- The role of the rotor of an AC motor is:The rotor is a part of the magnetic circuit of the motor, which forms the whole magnetic circuit of the motor together with the stator core and the air gap. The rotor iron core is generally laminated with 0.5mm thick silicon steel sheets. The rotor cores of medium and small AC motors are mostly installed directly on the motor shaft. The rotor core of the large AC motor is mounted on the bracket, and the support is sheathed on the shaft.
- Q: I am trying to find a 120vac motor that spins at 2500rpm - 3000rpm. It won't really carry much of a load.?
- You can use a series or universal motor. Its speed could go up to 3600 rpm but, reduces in proportion to the load.
- Q: What is different between AC, DC,and Servo motors? How can you control speed each motors?
- Use a fuse in sequence with although you persist with so as that the motor is secure. no rely if it fairly is acdc, then employing a dc additionally gets it going. you may convert an ac of 12V to pulsating dc in case you employ a bridge rectifier rated for say 200V and 10 amps. if vacuum motor is rated for below a million.2kW. no rely if that is not any longer an ac dc motor, likely the fuse (say 15 amps) will save it. Get somebody who is familiar with all this, just to determine you do no longer might desire to purchase a sparkling vacuum motor..
- Q: I am trying to wire up a salvaged AC motor for a lab project. It is a single phase 1/3 HP 115 volt 6.9 amp motor with four wires coming out of it and no schematic... It would seem that the wires are somehow paired as they come out of the motor, T0 and T5 are together, and T1 and T8 are together. The motor has a set of brushes so I assume it is a universal motor. Before I go hooking it up all willy-nilly like, I was wondering if anyone could shed a little insight on this problem. Also, I assume that this motor is reversible, so if anyone could give me a little help on that I would be grateful.
- ya motor might want to o.k. be a stepping motor run by technique of a chip that aspects a pulsed provide around the three wires which it reverses by technique of reversing the pulses reminiscent of a lightchaser in case you go with to flow into this further attempt googling this chip- SAA 1027
- Q: Why is DC motor speed regulating better than AC?
- As long as the DC motor changes the armature voltage, it can speed up, but the AC motor needs to consider the stator and rotor coupling problem
- Q: Hi i am looking for a company that makes hollow shaft ac motors , it is american company that is called US , but i cannot seem to find it anywhere , i tried googling for it but obviously the brand name ( US ) isvery common that i get a lot of results that i am not looking for , can any one help me with this brand , if there is a website or something for them i woud really appreciate it
- US okorder /
- Q: and some formulas for calculating electric motor speed
- AC motors usually have the following on the nameplate: Rated output power – Pr (kilowatts – kW or Horsepower – Hp) Rated speed – nr (revolutions per minute – RPM) Rated voltage – Vr (volts – V) Rated frequency – fr (hertz – Hz) Rated current – Ir (amperes – A) Other parameters (not on the nameplate): Rated torque – Mr (Newton meters – Nm or pounds feet – lbs-ft) Mr=9550xPr/nr for Mr in Nm Pr in kW Mr=5252xPr/nr for Mr in Hp Pr in lbs-ft Number of poles – p (always an even number, only north/south pairs are possible) With 3-phase induction motors, speed can be increased or decreased by changing the frequency: Speed, n = 120f/p To have available torque remain constant at M = Mr without current exceeding rated current, voltage must be increased or decreased with frequency change such that V = f x Vr/fr. Speed increase is limited by the motor’s ability to tolerate the electrical stress due to increased voltage and the mechanical stress due to increased speed above the rated values. If the frequency is increased above the rated value without increasing the voltage, the available torque will be reduced. Up to about 50% above rated speed, the available torque is approximately the torque that will produce the rated output power. Under some load conditions, some types of single phase motors can be controlled in the same way to a more limited extent. Under some load conditions, with some types of single phase and three phase motors voltage reduction can be used to reduce speed to a limited extent.
- Q: Name two different types of ac motors?
- (a) Synchronous Motors. 1. Plain 2. Super (b) Asynchronous Motors. 1. Induction Motors: (a) Squirrel Cage (b) Slip-Ring (external resistance). 2. Commutator Motors: (a) Series (b) Compensated (c) Shunt (d) Repulsion (e) Repulsion-start induction (f) Repulsion induction
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Siemens EX Series Motor
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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