What information is found on a motor nameplate?

What information is found on a motor nameplate?

This data tells you at which voltage the motor is made to operate. Nameplate-defined parameters for the motor such as power factor, efficiency, torque and current are at rated voltage and frequency. When the motor is used at other voltages than the voltage indicated on the nameplate, its performance will be affected.

What do the numbers on an electric motor mean?

Generally, the first two numbers indicate the diameter of the entire can of the motor OR the diameter of the stator (the inner part of the motor) only. Similarly, the second pair of numbers can indicate either the height of the entire motor, or only the height of the stator.

How do you read electric motor specs?

1. Frame Designation (FR) – this is typically a two or three digit number followed by one or more letters that identifies important mounting dimensions.
2. Manufacturers Type (TYPE).
3. Horsepower Output (kW).
4. Time Rating or duty (DUTY).
5. Max Ambient Temp.
6. Insulation System Designation.
7. Speed At Rated Load (RPM).
8. Frequency (HZ).

How do you check a motor kw without a nameplate?

Use a strobe tachometer to determine motor RPM and then set up a generic motor in the database for that RPM. If loading cannot be provided by the operator use the acquired data and RPM to approximate loading. You can view the power factor for a value around 88 to 92 to approximate full load.

How do I find my motor details without nameplate?

What is motor rated current?

The current drawn by a motor at its full load, calculated using formula is known as the rated current. Motor windings are designed to carry the rated current during normal operations and slightly higher than it for shorter duration.

What is motor code?

The nameplates of alternating current (AC) motors built to National Electrical Manufacturers Association (NEMA) standards reference a system of alphabetical letters that designate the principal characteristics of each motor—code, design and insulation class. …

What are 3 types of motor controls?

There are four basic motor controller and drive types: AC, DC, servo, and stepper, each having an input power type modified to the desired output function to match with an application.

How do you tell the difference between AC and DC motors?

In AC motors, the armature is stationary while the magnetic field rotates. In DC motors, the armature rotates while the magnetic field remains stationary. In AC motors, three input terminals (RYB) is present. In DC motors, two input terminals (positive and negative) are present.

What kind of data does a motor nameplate show?

All motors have a permanent nameplate which lists all important data, further data is usually available in the motor catalogue. The nameplate for a two-pole 15 kW motor may have the following important data: The motor has three phases and is for a mains supply with a frequency of 50 Hz.

What should the nameplate for a 15 kW motor show?

The nameplate for a two-pole 15 kW motor may have the following important data: The motor has three phases and is for a mains supply with a frequency of 50 Hz. The rated output of the motor is 15 kW, i.e. the motor is able to supply a shaft output of at least 15 kW if connected to the mains supply as indicated.

What does encl mean on electric motor nameplate?

Not every nameplate has an altitude rating. This designation, often shown as “ENCL” on a nameplate, classifies the motor as according to its degree of protection from its environment, and its method of cooling. NEMA describes many variations of motor enclosures.

Why does NEMA require interchangeable motor nameplates?

To help ensure its standards are properly met and communicated, NEMA requires that motors from different manufacturers meet or exceed minimum performance parameters and, for the most part, be about the same size. One way to ensure the identification of interchangeable motors is through the consistency of nameplate information between manufacturers.