Motors

Motors

Industry: Electrical equipment

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Motors

navy service A

Electrical equipment; Motors

Motors designed to meet requirements of MIL M-17059 or MlL M-17060 for high shock and service and are essential to the combat effectiveness of a ship. These motors are usually made of nodular iron.

N.E.C. temperature code (T code)

Electrical equipment; Motors

An index for describing maximum allowable "skin" (surface) temperature of a motor under any normal or abnormal operating conditions. The "T" codes are applicable to U.L. Iisted explosion-proof ...

P base

Electrical equipment; Motors

A special mounting similar to "D" flange except with a machine fit tenon recessed instead of protruding. Usually found on pumps.

T frame

Electrical equipment; Motors

Current NEMA designation identifying AC induction motor frames. (NEMA has dimension tables which offer standard frame measurements) Replaced the previous standard "U" frame in 1965.

U frame

Electrical equipment; Motors

A previously used NEMA designation indicating frame size and dimension (prior to 1965 the standard frame sizes per horsepower rating).

vertical P base motor

Electrical equipment; Motors

A vertical motor with a special mounting face conforming to NEMA's "P" design and with a ring groove on the shaft.

acceleration (α)

Electrical equipment; Motors

The time rate change of velocity. Torque (T) developed by the rotor (armature) ) will cause it to accelerate. α = T / J , Where J = polar moment of inertia.