Direct Current Motor Labelled Diagram

Due to the huge thermal stress on the motor the lifespan of the machine reduces.

Direct current motor labelled diagram. Mainly there are two types of dc motors. Alternating current is safe to transfer over longer distances and can provide more power but direct current can t be transferred over longer distances. A direct current motor dc is named according to the connection of the field winding with the armature. Dc series motor circuit diagram.

The induction motor draws a huge amount of current at startup. There is a significant dip in voltage in the electrical installation because of too much in rush current and due to this other customer connected to the same lines affected hence this is suitable only for. Dol starter for motors direct online starter diagram working types applications. Direct on line starter has very high starting current or too much current 6 to 8 times of full load current.

In a series motor electric power is supplied between one end of the series field windings and one end of the armature. As the loop gets closed there will be a current circulating through the loop. The frequency of alternating current is 50hz or 60hz depending upon the country while the frequency of direct current is zero. Principle of dc motor.

Direct on line motor starter dol is suitable for. The maximum size of a motor allowed on a direct on line starter may be limited by the supply utility for this reason. In an electric motor the operation is dependent upon simple electromagnetism. Rather than oscillating back and forth dc provides a constant voltage or current.

One is separately excited dc motor and other is self ex. This starting current can damage the motor windings. The direction of the current can be determined by flemming s right hand rule this rule says that if you stretch thumb index finger and middle finger of your right hand perpendicular to each other then thumbs indicates the direction of motion of the conductor index finger indicates the direction of magnetic field. When voltage is applied current flows from power supply terminals through the series winding and armature winding.

The dc motor or direct current motor works on that principal. A dc motor is an electric motor that runs on direct current power. An ac generator equipped with a device called a commutator can produce direct current. In order to avoid any damage we use different techniques to reduce the starting current using motor starter.

When a current carrying conductor is placed in a magnetic field it experiences a torque and has a tendency to move. In other words when a magnetic field and an electric field interact a mechanical force is produced. The connection diagram of the compound motor is shown below. A direct on line starter can be used if the high inrush current of the motor does not cause excessive voltage drop in the supply circuit.