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What is motor constant?

What is Motor constant?

Ratio between force in Newton and dissipated heat in Watts [N^2/W]. A higher value of the constant implies that the motor dissipates less heat for the generation of a certain amount of force. The value decreases at higher coil temperatures. This is caused by increased Rph-ph winding resistance. S=(K^2/(3*Rph-ph)

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