What do IP ratings really mean, and how do they differ from NEMA ratings?

What do IP ratings really mean, and how do they differ from NEMA ratings?

  •   09/11/2018 03:27:00 PM
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Electrical enclosures, such as those for motors, sensors, and HMIs, are often given what is known as an IP rating, consisting of the two letters, “IP,” followed by two numeric digits — IP65, for example.

MOTOR EFFICIENCY LABELING

MOTOR EFFICIENCY LABELING

  •   08/11/2018 09:37:00 AM
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Coincident with the NEMA test program: it was determined that a more consistent and meaningful method of expressing electric motor efficiency was necessary.

AC Induction Motor Speeds

AC Induction Motor Speeds

  •   02/11/2018 02:22:00 PM
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AC motors are unique because they are built to run at specific speeds regardless of their design or manufacturer. The speed of an AC motor is dependent on the number of poles it has and the line frequency of the power supply, not on it’s voltage.

GENERAL PROPERTIES OF ELECTRIC MOTORS

GENERAL PROPERTIES OF ELECTRIC MOTORS

  •   29/10/2018 12:37:00 PM
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All electric motors are governed by the laws of electromagnetism, and are subject to essentially the same constraints imposed by the materials (copper and iron) from which they are made.


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