The mechanical equipment used in some areas with an altitude of more than 1500 meters needs to be equipped with a plateau motor to ensure the safety and life of the equipment. Because the altitude will not only affect the human body, but also have a great impact on the operation of ordinary motors. Mainly because the plateau environment is high in altitude, low in air pressure, hypoxia, high in cold, large in temperature difference, and large in wind and sand, which is a very severe test for the ventilation and heat dissipation conditions, insulation and protection of the motor. If an ordinary motor is directly applied to the plateau environment, it may burn out or cause frequent failures due to the deterioration of operating conditions.

For everyone to sort out and analyze the difference between the plateau motor and the ordinary variable frequency speed regulation motor.

1. First, the altitude will lead to a decrease in the insulation strength of the motor, and secondly, the breakdown voltage of the electrical clearance of the motor will decrease. And in the operation of high-power high-voltage motor, the corona inception voltage decreases.

2. In the high-altitude environment, the cooling effect of the air medium is reduced, and the heat dissipation capacity is reduced, which will cause serious heating of the ordinary motor. In the plateau area, the air pressure is low, and the volatility of lubricating oil (grease) is large, which leads to increased mechanical wear.

Therefore, ordinary three-phase asynchronous motors cannot be used for a long time in the plateau environment, because the normal operating environment temperature of the general motor is -5°C to 40°C, and the location should be below 1000m above sea level.

And as the altitude increases, the motor manufacturer will optimize the side points and performance assessment indicators of the plateau motor design according to the different operating environmental conditions of the plateau motor. Therefore, a brand-new optimized design of the plateau dedicated motor is derived to meet the regulations. The output power and the upper limit of the overall size are required, and the protective structure is adapted to the specific operating environment.

In addition, Hino Electric reminds that plateau motors are also divided into general-purpose plateau motors and plateau outdoor motors. General-purpose plateau motors only need to consider ventilation and heat dissipation. Ordinary motors can be used in plateau environments if they pass the strict assessment of the altitude temperature rise limit or improve the ventilation and heat dissipation conditions; plateau outdoor motors are not required in terms of insulation strength, electrical clearance, temperature rise limit and Corona prevention measures and other aspects need to be adjusted accordingly, and special ventilation and heat dissipation methods and protection structures such as temperature difference protection and wind and sand protection are often required.