If faster acceleration is needed in a Primary Resistor Starter, what should be done?

Adding additional resistors in parallel controlled by timers and contactors is the effective method for achieving faster acceleration in a Primary Resistor Starter. This approach allows for a reduction in the overall resistance in the circuit at a controlled rate, leading to a more rapid increase in motor speed. The use of timers and contactors facilitates the timed switching of resistors, which adjusts the resistance dynamically during startup.

By strategically connecting resistors in parallel, the effective resistance decreases, allowing more current to flow to the motor, subsequently increasing the torque and accelerating the motor more quickly. This method is particularly beneficial in applications where rapid startup is critical, as it maintains control over the acceleration process while still protecting the motor from excessive inrush current that could cause damage.

Other options, such as changing the motor type or adding another starter, may not be as efficient or feasible, as they would require significant redesign or investment in new equipment. Increasing the line voltage could lead to excessive current draw and potential damage to both the motor and the starter components, while additional resistors in series would actually impede acceleration rather than enhance it. Thus, utilizing additional parallel resistors with proper control is the most effective strategy for achieving faster acceleration in a Primary Resistor Starter system.