Construction and Structure of IEC Low Voltage Motors

Longbank’s low-voltage motors are considered one of the finest products we have to offer at Longbank. They have been designed to meet the specifications and performance requirements of both the International Electrotechnical Commission and the European Commission. To create low-voltage motors, several different components will be required to build them, including the following:

The Rotor:

The moving component of the low voltage motors is the rotor, sometimes rotor is called an armature. It provides turning force to the shaft for delivering the mechanical energy. The current of the conductor interacts with the magnetic fields of the stator which helps the shaft rotate.  The magnets of the stator can be permanent or temporary.

The Stator:

The motor’s stator is its core component that can be comprised of permanent magnets or windings. Several small metal sheets are embedded in the stator core to reduce the energy losses instead of a large sheet. These sheets are named laminations.

IEC Series Motors
IEC Series Motors

The Bearings:

The bearing provides support to the rotating shaft. it keeps a specific distance between the spinning rotor and the stator. The bearing also carries the shaft of the motor that is led to hold the load in place. This shaft is located in the outer part of the motor so it can be called overhung.

The Windings:

The windings are the small coils of wires wound around the poles (stator) of the magnet.  When electric current passes through the coils the poles of the magnet begin to produce a magnetic field. The configuration of pole winding can be salient or non-salient.

The Air Gap:

It is a non-physical component of the motor but its importance can’t be neglected. The gap between the rotor and the stator affects the efficiency of the low voltage motor. As this gap increases, the magnetizing ability of the stator reduces. However, the highly reduced can produce noise and also an energy crisis.

The Commutator:

The commutator reverses the direction of the current coming from the external circuit. It converts AC into DC and is composed of copper wires. It helps in the production of the unidirectional current.

Hitherto all the parts of the low voltage motor have been described along with their functions. All these elements are enclosed in an outer covering due to protection reasons.

Features of IEC Low Voltage Motors

Some of the best features of IEC low voltage motors are described here:

  • Some motors are composed of cast iron which makes them highly robust and suitable for their function.
  • Aluminum makes the motor strong, durable, and light in weight.
  • The IEC low voltage motors are water-proofed which is known as IP55 protection.
  • C3 paint system prevents the motor from corrosion.
  • The number of rotors is increased in the motor to enhance its load-lifting capability.
  • The stator can be gamma or V-shaped.
  • The grease collector is usually attached with large motors.
  • The shaft shape can be optimized and also be the windings.
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