Abstract
Equalizer connections are a necessary part of d-c machine armature windings having more than two circuits. Nearly all machines of medium and large sizes and many small machines for special purposes are in this category. These connections cause substantially equal currents to flow in the circuits of the armature winding resulting in minimum losses, minimum temperature rise, and uniform commutation at each brush arm. This paper determines the current which the connections carry when the excitation of the field poles is unbalanced. From the results, the size of the connections to meet a specified temperature rise, under given unbalanced conditions, can be determined. The paper explains the reasons for the use of equalizer connections and describes how they work.
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