Electric Motor Nameplate Details

Figure 1 typical induction motor nameplate information.

Electric motor nameplate details.

In most countries it is a requirement for manufacturers to display all information on the motor s nameplate but often this is not the case. The rated output of the motor is 15 kw i e. Manufacturer s type and frame designation nema defines standard frame sizes. The motor has three phases and is for a mains supply with a frequency of 50 hz.

Understanding motor nameplate information nema vs. Iec standards the motor standards can be grouped into two major categories. The frame size provides a standard for details such as the location of mounting holes a height of the shaft above the mounting plate etc. Understanding nameplate information can be hard sometimes but is essential.

The full load amps fla full load current flc or rated load current rlc of an ac induction motor all three terms refer basically to the same thing is the current drawn by the electric motor when it is operated at the rated load rated voltage and rated frequency ac motors as found on the motor nameplate. The nameplate for a two pole 15 kw motor may have the following important data. This name plate shows a frame size 326t. The motor is able to supply a shaft output of at least 15 kw if connected to the mains supply as indicated.

There may be two bearing specifications on a motor nameplate the drive shaft bearing and the opposite drive shaft bearing. The rated output of the asynchronous motor. Your motor nameplate may include bearing information. In north america the national electric manufacturers association nema sets motor standards including what should go on the nameplate nema standard mg 1 10 40.

Motor nameplate is normally located on all produced electric motors.