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ground_wall_insulation

Ground wall insulation

Definition

Ground wall insulation or ground insulation - the main electrical insulation between the windings and the magnetic core of the stator in rotating machines.1)

The ground wall insulation touches the inner side of the stator slots and can be composed of several layers.


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There is no ground wall insulation between the cage and magnetic core of a rotor in induction machines. However, in all rotating machines with rotor the windings also have to be insulated from the core.

Ground wall insulation in a motor with a random winding (drawing not to scale)

by S. Zurek, Encyclopedia Magnetica, CC-BY-3.0

Ground wall insulation in a small 3-phase motor with random winding ground-wall_insulation_magnetica.jpg

by S. Zurek, Encyclopedia Magnetica, CC-BY-3.0

Large 3-phase induction motor during repair, with prepared ground wall insulation

by S. Zurek, Encyclopedia Magnetica, CC-BY-3.0

Both windings on the rotor of a synchronous generator are insulated from their magnetic cores synchronous_stator_magnetica.jpg

by S. Zurek, Encyclopedia Magnetica, CC-BY-3.0

No ground wall insulation in a squirrel-cage rotor of an induction motor double-cage_rotor.jpg

by S. Zurek, Encyclopedia Magnetica, CC-BY-3.0

See also

References

ground_wall_insulation.txt ยท Last modified: 2020/07/19 01:00 by stan_zurek

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