What are the steps for sizing a motor?
The process for sizing motors for an application breaks down into three major steps: Planning for the available power supply. Motor sizing steps should generally be performed in this order, but each factor relates to and affects the others.
Why do you need a proper size motor?
Properly sized motors operate the driven equipment most efficiently, which in turn causes the least wear and tear. When equipment is running correctly, machine uptime is maximized, and so is the return on investment in the motor and the driven equipment. Energy efficiency is another big factor.
When did the specification of electric motors begin?
Specification of Electric Motors www.weg.net Specification of Electric Motors 3 WEG, which began in 1961 as a small factory of electric motors, has become a leading global supplier of electronic products for different segments.
How to calculate the motor size for your project?
Internally and behind the scenes, the software will multiply the acceleration by the load inertia to calculate the load’s acceleration torque. The software will also calculate friction forces for sliding loads, gravitational forces for vertical loads, and any external forces.
Why is the sizing of an induction motor important?
The proper sizing of three-phase induction motors saves energy and reduces downtime. A motor driving a load is an energy balancing act. On one side is the mechanical demand of the turning load. On the other is waste heat the motor generates turning that load. A small-sized motor that can’t dissipate waste heat fast enough rapidly burns out.
What happens when a motor is too small?
A motor driving a load is an energy balancing act. On one side is the mechanical demand of the turning load. On the other is waste heat the motor generates turning that load. A small-sized motor that can’t dissipate waste heat fast enough rapidly burns out. Motors sized too large stay cool but waste energy and money in inefficient operation.
How are the ratings of a motor determined?
Motors are rated by the output power they can produce over a given time period without overheating. These ratings are on the motor nameplate. Manufacturers build motors with different duty cycles to match the three load categories. Duty cycle is the ratio of time the motor produces rated power divided by the total elapsed time.