Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

slot
a space between the teeth used to place windings in electrical machines.
slot pitch
the angular distance (normally in electrical degrees) between the axes of two slots.
slotless motor
permanent magnet brush-less DC motor in which stator teeth are removed and the resulting space is partially filled with copper. The slotless construction permits an increase in rotor diameter within the same frame size, or alternatively an increase in electric loading without a corresponding increase in current density.
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