Standard Electric Motor Sizes Hp

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Standard electric motor sizes hp.

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. For a 1 horsepower hp motor the load should typically be in the range 1 2 to 1 hp with maximum efficiency at 3 4 hp. However choosing the next larger size motor say 10 instead of 7 5 hp brings greater capacity for coping with. Electric motors generators and drives the following are dimensional size charts for standard electric motor nema standard frames and configuration.

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. Teco westinghouse motor company teco electric europe ltd middle east atlas diba engineering trade co. A motor sized for peak load alone may burn out rapidly in intermittent duty.

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. Motor hp voltage typical motor f l a. 3 phase induction motors of 1000v or lower. Our motors are completely customizable due to our in house design engineering and manufacturing capabilities allowing us to not only meet but exceed your specific application requirements.

Motors of higher speed usually take a lower current than that shown in the table. 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. The wire breaker and fuse sizes are provided as a reference for the installer and are based on the 1996 national electrical code. Copper conductor 75 c rating.

Frame size 2 pole 4 pole 6 pole 100 5200 3600 2400 112 5200 3600 2400. 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. 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.