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Other Motor Control Resistors: |
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| DC Series Wound Motor Resistor | ||
The resistor limits torque by limiting current flow to the motor. It is used for starting and stopping the motor. Initial information needed for sizing your resistor:
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Commonly known as a "reduced-voltage" or "ballast" resistor, this resistor acts as a voltage divider for soft starting of the motor. Initial information needed for sizing your resistor:
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The resistor is wired into the motor secondary slip rings, where it dissipates torque energy in the form of heat. It also provides "soft starting" as resistance is removed in steps. Initial information needed for sizing your resistor:
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Wye-delta is a reduced-inrush starting method in which 3 phase motor stator coils are initially connected in a wye configuration and switched to delta as the motor's speed increases. The resistor works as a reduced voltage starting resistor by starting a motor at 58% reduced voltage. Initial information needed for sizing your resistor:
For other applications, such as small horsepower motors, dynamic braking, and field discharge, please give us a call. We offer free engineering assistance to our customers for all motor control applications
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