What are the ratings of motor that belongs to medium size?

Question

What are the ratings of motor that belongs to medium size?

Answer 1

idk

Answer 2

Electric motors range in size from the vibrator motor is a cell phone that is the size of an eraser on the end of a pencil to motors that are large enough for a person to walk under the output shaft. The definition of "medium" must be a rather wide range and not very specific.

All motors that are used in household appliances, computers, office equipment, entertainment equipment etc. would be considered to be small. The largest of the small motors would be single phase AC motors operating at 120 or 240 volts.

The smallest medium sized motors would probably produce about 3750 watts (5 horsepower) of mechanical power. The largest motors in the medium range would produce about 750 kilowatts (1000 horsepower). The smallest motors in the range could use single phase AC power, but most would use 3-phase. Most motors in the size range would use 200 to 690 volts. Medium sized motors of a given power and speed rating would usually conform to standardized mounting dimensions so that motors from different manufacturers would be interchangeable.

Large motors range in size up to more than 75,000 kilowatts (100,000 horsepower). They are designed and manufactured to meet specific customer requirements. The operating voltage is 2000 to more than 10,000 volts.

Answer 3

*Basically, electric motors are divided into three broad horsepower (hp) categories: small, medium and large.

The most common motors are considered to be fractional-horsepower motors with ratings from 1/20 to 1 hp and are categorized as small motors.

Also included in the small category are motors with smaller ratings, which are commonly classified as sub-fractional or miniature.

*Medium size motors are considered to be in the range of 1 hp through 100 hp, with large motors occupying the 100 hp to 50,000 hp range. Categories can vary due to motor type (AC or DC), speed, number of poles and maximum ratings, so the categories listed should be viewed with this in mind. Since medium-sized motors are also used in large quantities in industrial and consumer applications, NEMA's MG1 standard permits motor comparison between manufacturers. With large motors, however, there is no standardization, since motors in this category are normally designed for specific applications.