Electric Motor

What Is On a Motor Nameplate?

A motor nameplate is a panel which is affixed to electric motors. The nameplate contains information about the construction characteristics and performance of the motor. The types of information that are shown include the number of phases, rated operating voltage, service duty, efficiency code, frame size, IP rating, insulation class and more.

How Do You Read a Nameplate on an Electric Motor?

As a lot of information is condensed into a small amount of space, motor nameplates can be difficult to understand without the right expertise. In most cases, each piece of information will be preceded by a number, letter or symbol which indicates the meaning of the field. The layout of a motor nameplate may change based on the manufacturer but generally, the same information is given. Therefore, once you can understand one motor nameplate, it’s much easier to understand others.

Read through our blog post to see the exact meaning of each field of a nameplate using a W22 Premium three phase electric induction motor manufactured by WEG as an example.