Showing posts with label AC motors. Show all posts
Showing posts with label AC motors. Show all posts

Monday, 5 December 2011

What You cannot Ignore While Repairing Electric Motor

Electric motors are very common and can be seen in almost all equipments which are powered by motors. Be it a vehicle, airplane, pool pump in a swimming pool or a lathe in a woodshop, uses of motor is very common. Electric motors have become an integral part of business and factories. Hence, users have to be attentive about motors’ working. Time may come when you will find some part of motor is not working.

In such case when you are seeking electric motor repairs, make sure that you get qualified mechanics that are specialized in repairing electric motors. Electric motors are very complex and require skilled labors. If the motor you have is small, you can call technicians. However, if you have large motors and you really need electric motor repairs, contact companies which have motor repair divisions.

These companies provide mechanics and technicians who are well skilled in repairing both A/C as well as D/C motors. They are not just skilled but are also equipped with advance tools. Besides, you must also check if the company you are about to contact provides certified warranty repair facility in case, your motor in under warranty period. It is better to be on the safe side no matter if you have got small motor or a large motor. A small mishandling can lead to serious damage. No doubt, you have to be very careful while you are seeking electric motor repairs.

Friday, 14 October 2011

What are Electric Motors?


The 'AC' in AC motors stands for alternating current and indicates that these machines use an alternating current to provide power. An alternating current means that the electrons traveling along the conductor switch direction regularly, so that they flow first forwards and then backwards. AC electricity was first invented by Nikolas Teklas in the 1880s. AC electric motors can retain energy more efficiently than DC machines and they are also better able to transfer different amounts of power.

AC electric motors consist of two main parts: the external stator and the internal rotor. The stator is responsible for producing a rotating magnetic field which in turn produces the torque received by the rotor. There are two different categories of AC machines, the induction and the synchronous. Induction electric motors use an induced current to produce the magnetic field and will always runt at a slightly slower or faster speed than the supply frequency. Conversely, synchronous machines do not rely on an induced current and are able to run at exactly the same speed as the supply frequency.

Most AC machines use squirrel cage rotors, named for their resemblance to the exercise toy for rodents. These rotors have two ring shaped windings at either end with bars running along the length of the rotor. The squirrel cage rotors used in AC electric motors generally act as transformers, acting to bring the rotor into synchronisation with the stator's field. As the mechanical load on the machine increases, the rotor also increases the power used.

AC electric motors are used for a variety of applications, from washing machines and dishwashers to heavy industry.