- Отрасли: Electrical equipment
- Number of terms: 4774
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The rotating member of the motor which protrudes past the bearings for attachment to the driven apparatus.
Industry:Electrical equipment
The speed of the motor refers to the RPM's (revolutions per minute) of the shaft.
Industry:Electrical equipment
A special mounting similar to "D" flange except with a machine fit tenon recessed instead of protruding. Usually found on pumps.
Industry:Electrical equipment
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.
Industry:Electrical equipment
A previously used NEMA designation indicating frame size and dimension (prior to 1965 the standard frame sizes per horsepower rating).
Industry:Electrical equipment
A vertical motor with a special mounting face conforming to NEMA's "P" design and with a ring groove on the shaft.
Industry:Electrical equipment
A multi-speed motor used on loads whose torque requirements vary with speed as in some centrifugal pumps and blowers. The HP varies as the square of the speed.
Industry:Electrical equipment
A motor being mounted vertically (shaft up or down) as in many pump applications.
Industry:Electrical equipment
The force that causes a current to flow in an electrical circuit. Analogous to pressure in hydraulics, voltage is often referred to as electrical pressure. The voltage of a motor is usually determined by the supply to which it is being attached. NEMA requires that the motor be able to carry their rated horsepower at nameplate voltage plus or minus 10% although not necessarily at the rated temperature rise.
Industry:Electrical equipment
Loss encountered across a circuit impedance from power source to applicable point (motor) caused by the resistance in conductor. Voltage drop across a resistor takes the form of heat released into the air at the point of resistance.
Industry:Electrical equipment
