Understanding NEMA Motor Nameplates

Understanding NEMA Motor Nameplates

Mission Statement

is to be the best

(as determined by our customers)

marketers, designers and manufacturers of

industrial electric motors, mechanical

power transmission products, drives and

generators

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| ? Baldor Electric Company

Who is NEMA?

? The National Electrical

Manufacturers Association

(NEMA) was founded in

1926 to develop and

promote electrical

manufacturing standards.

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| ? Baldor Electric Company

NEMA states that the motor nameplate must show:

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Manufacturer type

Time rating

Service Factor

Efficiency

Frame Size

Design Code

Rated horsepower

Rated voltage and amps

Rated full-load amps for

each voltage level

? Rated full-load speed

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| ? Baldor Electric Company

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Frequency

Phase

Insulation class

Rated ambient

temperature

? Locked-rotor code letter

HP

? Measurement of work done

per unit of time

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| ? Baldor Electric Company

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