What Kinds of Motors are Energy Efficient?

For electric motor products, higher power factor and efficiency are important symbols of its energy saving level. Power factor assesses the motor's ability to absorb energy from the grid, while efficiency assesses the motor's ability to convert the absorbed energy into mechanical energy. A high power factor and efficiency are the goals that everyone is looking forward to.

For the power factor, different series of motors, because of their own characteristics of the limitations of the technical conditions of the motor to make provisions for the state for the assessment of the elements of electrical equipment. And motor efficiency, that is, whether the motor energy saving, involves a problem of how to define.

Power frequency motor is one of the most widely used motor types at present. At present, the state has made provisions through mandatory standards. GB18613-2020 is a general purpose motor or general purpose explosion-proof motor with rated voltage below 1000V, power supply from 50Hz three-phase power supply, power within 120W-1000kW, 2-pole, 4-pole, 6-pole and 8-pole, single speed closed self fan cooling, N-design, continuous working system. The standard has provisions on the efficiency values corresponding to different energy efficiency levels, among which, the standard stipulates that, The IE3 energy efficiency level is the minimum energy efficiency limit currently specified, that is, this type of motor can be produced and used only when its efficiency reaches the IE3 (corresponding to the national level 3 energy efficiency) level, while the corresponding level 2 and level 1 energy efficiency motors are energy-saving products, and the manufacturer can apply for energy saving product certification. Generally speaking, when entering the market, this type of motor must be attached with an energy efficiency label, on which the corresponding energy efficiency grade of the motor must be clearly defined. The motor without the label is obviously not allowed to enter the market; When the efficiency level of the motor reaches Level 2 or Level 1, it is proved that the motor is an energy-saving electrical product.

For high-frequency high-voltage motors, there is also a mandatory standard GB30254 corresponds to, but compared to low-voltage motors, high-voltage motor energy efficiency control to be relatively weak, the product series code YX, YXKK, etc. contains the word "X", indicating that the motor is in accordance with the mandatory standards to control the level of efficiency, the same also involves the standard limits And the concept of energy-saving efficiency level.

For permanent magnet synchronous motors, GB30253 is a mandatory energy-efficiency standards for this type of motor, the implementation of the standard also lags behind the GB8613 standard. But as consumers and producers of motors, should be very clear about the relationship between these standards and efficiency limit requirements.

Frequency conversion motor and permanent magnet synchronous motor, is the symbol of energy-saving products, and inverter supporting the use of natural features, determines the prerequisites of this type of motor can be energy-saving, which is the type of motor in recent years, one of the factors of a better occupation of the market.