Recently, the results of random inspections on motor quality at different levels have been announced one after another. From the comparison of unqualified items, it can be found that the efficiency performance of high-efficiency motors is not in compliance with the standards, which is a very serious problem. At the same time, the thermal test performance of the corresponding motors is also unqualified. In response to this problem, some netizens asked about the relevant reasons.
In fact, many performances of the motor are directly or indirectly correlated. The tendency to meet a certain performance of the motor may cause other performances to fail to meet the requirements. When unqualified items appear, there may be accompanying phenomena.
In order to improve the efficiency index of the motor, we will start from reducing the loss of the motor, such as controlling the mechanical loss and heat loss. From the performance index of high-efficiency motors, we can find that the temperature rise of high-efficiency motors is relatively low, which is a direct relationship between low consumption and high efficiency; on the contrary, when the efficiency of the motor is unqualified, it means that the loss of the motor is large, and heat loss, which accounts for a large proportion, naturally plays a decisive role. Therefore, the temperature rise under the unqualified efficiency state is unqualified, which is accompanied in most cases.
According to this relationship, for a running motor, its efficiency index compliance can be qualitatively determined according to the temperature rise state of the motor during rated operation, and submitted to the local quality department for verification if necessary.
Post time: Feb-13-2025