However choosing the next larger size motor say 10 instead of 7 5 hp brings greater capacity for coping with.
Standard electric motor sizes hp.
Electric motors generators and drives the following are dimensional size charts for standard electric motor nema standard frames and configuration.
Available in open drip proof weather protected type i and ii totally enclosed fan cooled and totally enclosed air to air cooled enclosures toshiba s medium voltage motor offerings range from 100 to 50 000 hp and 2300 to 13 800 v.
803 324 3259 standard nema frames vs.
800 868 3770 fax.
Teco westinghouse motor company teco electric europe ltd middle east atlas diba engineering trade co.
Frame size 2 pole 4 pole 6 pole 100 5200 3600 2400 112 5200 3600 2400.
The wire breaker and fuse sizes are provided as a reference for the installer and are based on the 1996 national electrical code.
All wiring should be performed by a licensed electrician or electrical contractor and must meet all applicable codes for the area where installed.
Standard motor catalogue aesv2e aesu2e series.
Standardized motor dimensions are established by the national electrical manufacturers association nema are tabulated below and apply to all base mounted motors listed herein that carry a nema.
3 phase induction motors of 1000v or lower.
Note that most electric motors are designed to run at 50 to 100 of rated load and that maximum efficiency usually is near 75 of rated load.
Copper conductor 75 c rating.
A motor sized for peak load alone may burn out rapidly in intermittent duty.
The high output motors are best suited for applications requiring a high power to size ratio and extend from frame size 90 to 315 or 1 1 to 350 kw with a minimum efficiency level of ie2.
Motors of higher speed usually take a lower current than that shown in the table.
Standard horsepower ratings for electrical motors 1 to 4000 hp are indicated below.
Horsepower 900 rpm 1200 rpm 1800 rpm 3600 rpm hp t frames 1964 present u frame 1952 present original nema t frames 1964 present u frame 1952 present original nema t frames.
Motor hp voltage typical motor f l a.