An electric motor is designed so that it can provide a nominal torque Cn, at a nominal speed Nn. That is, for a nominal power Pn, we consider the expression Pn = Cn x Nn. It is important to note that the electrical losses, also known as thermal losses, change according to the square of the resistant torque, which is the load.
In a well sized motor PL112600, this rugged torque must be smaller than the rated torque. If it is equal to or slightly higher, the resulting heating will be considerable. However, a motor considered underloaded will exhibit a noticeable reduction in performance. The ideal loading would have to match the workload that will be done, which is often not easy to determine.
If the work required of the driven machine has temporary overloads,
The engine power needs to be slightly higher than the power required. It is also important to limit the increase in losses by performing proper maintenance of the machines and their mechanical drive components, such as clearance regulation, proper lubrication and alignment checking, among others.