Reading the electric motor plate is known as the fastest way to understand the technical information of the electric motor and to understand its structure and functional characteristics. This skill will help to identify possible faults as well as ensure that the engine is suitable for a specific application. For this reason, in this guide, we provide a complete description of the signs on the engine license plate:

Manufacturer and model company

The first item that appears on the license plate is the name of the manufacturer of the electric motor. This name, which is usually located on the top of the license plate, helps you to contact the manufacturer and benefit from support services or the provision of spare parts. The product model, serial number, and production date of the electric motor are other information that can help you in the process of using the product. Some manufacturers of electric motors have defined a specific code for their products, this code contains useful technical information about the product, and information such as the number of phases, voltage, protection class, etc. is inserted

Type of nutrition

An important parameter that can be seen on the electric motor nameplate is whether it is alternating current (AC) or direct current (DC). This issue is important because electric motors can be driven by DC power sources such as batteries or rectifiers or by AC power sources such as the grid, and inverters. If this parameter is not written on the plate, it can be recognized from the voltage value or the presence of the frequency parameter. In AC motors, the number of phases is also a parameter that plays an important role in how to connect to the power supply. It is necessary to write the numbers 1 and 3 in this part to indicate single-phase and three-phase motors.

Nominal values

The rated values of the electric motor are parameters such as frequency, power, voltage, current, speed, and power factor that the motor works at its rated load in these values. These values are recorded on the license plate and the consumer chooses the desired engine for a specific application based on them. The consumer chooses a motor that is suitable for his application, taking into account the power and speed he needs (which leads to the calculation of the torque) at a specific voltage and frequency. The correct selection of these values helps the engine to work continuously at its rated power without increasing the temperature, and to prevent the reduction of efficiency and engine failure.

 

 

Dependent parameters

Other parameters are recorded on the nameplate of the electric motors, which have the same importance as the nominal values, but usually less attention is paid to them. These items include parameters such as insulation class, degree of protection, type of operation, energy category, temperature, and height of the working environment of the motor. A change in any of these parameters indicates a change of electrical or mechanical origin in the engine. For example, by changing the efficiency category, it is possible to change the structure of the motor, including the length of the core, material of the core, winding, etc. Therefore, it is very important to include these items on the license plate.