We answer the much-asked question of whether or not an
electric motor rewind results in a loss of efficiency.
The question of whether an electric motor rewind reduces its
efficiency has long been debated. Some people believe that having an electric
motor rewound will always lead to a loss of efficiency, but this is not
necessarily the case.
Why can a motor rewind reduce efficiency?
An electric motor can be subjected to high temperature when
the coil is stripped from the stator core prior to rewinding. This temperature
rise can affect the electrical characteristics of the stator core steel,
leading to higher iron losses and therefore lowering the motor’s efficiency.
How can efficiency reduction be avoided?
As long as the engineer rewinds the motor to manufacturer
specifications - i.e. using the exact size and type of winding that was removed
- its original performance will be achieved. This requires knowledge and
patience, so should not be rushed or carried out by an inexperienced engineer.
Is a motor rewind worth it?
Studies have revealed that, if carried out carefully by a
skilled, experienced professional with high-quality materials, an electric
motor rewind should not result in a loss of efficiency. In fact, a rewind may
actually increase a motor’s efficiency - if thicker winding wire is installed,
for instance. The belief that multiple rewinds result in cumulative efficiency
loss is also untrue, providing a motor is always repaired to the same standard.
Gibbons has been rewinding electric motors for 45 years and
our expertise means you can be assured your motor will be restored to at least
its original efficiency.
So for all motor rewind enquiries, call us on 01621868138 or
email info@gibbonsgroup.co.uk and we’ll be glad to help.
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