How many times should medium and large motors ideally be started and stopped?

The recommended practice for starting and stopping medium and large motors is generally up to four times a day. This guideline helps to maximize the lifespan of the motor and ensures that it operates efficiently. Frequent starts and stops can lead to increased wear on the motor and associated components, such as contactors and starters, which can lead to maintenance issues and unplanned downtime.

For motors, especially those that are larger and more complex, the thermal and mechanical stresses associated with each start and stop cycle can be considerable. This is why limiting the number of cycles to around four per day allows for a balance between operational flexibility and the reduction of excessive wear and tear.

While motors can technically be started and stopped as many times as needed, doing so without a defined limit can compromise functionality and lead to operational inefficiencies. It is essential to consider factors such as the motor's duty cycle, application, and the manufacturer's recommendations when determining the optimal number of start/stop cycles in a day.