What chemical pump is used in plateau?

The environmental factors of plateau motor running in plateau have an influence on the motor. With the increase of altitude, although the temperature will decrease, the air will become thinner and thinner, the heat dissipation rate of the motor will decrease, and the corona discharge voltage of the insulating material will also decrease accordingly.

The internal structure of plateau motor is different from that of plain motor. The coil spacing between the two ends of plateau motor is larger than that of plain motor, the air gap between rotor and stator is also larger than that of plain motor, and the external heat dissipation is also larger than that of plain motor.

Plateau motor requires insulation grade, and insulation material is the weakest link in motor. Insulating materials are particularly susceptible to high temperatures, leading to accelerated aging and damage. The higher the temperature, the easier the electric breakdown. Different insulation materials have different heat resistance, and electrical equipment with different insulation materials has different high temperature resistance. Therefore, the allowable temperature rise of general electrical equipment refers to the extreme working temperature of the motor relative to the ambient temperature, and shall not exceed its specified maximum temperature.

Motor insulation temperature grade table, insulation temperature grades a, e, b, f and h.

Maximum allowable temperature (℃)105120130155180.

Winding temperature rise (K) 60 75 80 100 125

Performance reference temperature (℃) 8095100120145.

Due to the different limit working temperature of insulation materials, the load output of each phase and the temperature of winding are different when the motor is running (the power supply voltage of each phase is different), so the service life of the motor is not the same. The insulation requirement of plateau motor is higher than the working limit temperature strength of plain motor insulation material. At present, the insulation of the motor entering the central ring is class F, and the highest working temperature is 155 degrees. According to the above,

The power consumption of plain motor and plateau power directly affects the rated power output of the motor when it is used at high altitude, and the ability of the motor to drive the load decreases, while the heat generation increases (the heat dissipation efficiency of the motor decreases). /kloc-the area above 0/000 meters needs to reduce the electrical capacity. For example, if you use a 7.5kW plateau motor on the plateau, then use a plain motor? The plain motor replaces the plateau motor, and the motor power needs 1 1kW.

Large horse-drawn carts increase active and reactive loads, the capacity of transformers should be increased, and the current-carrying area of transmission cables should also be increased.

The service life of plateau and plain motors can not reach the design value for a long time under actual conditions, so the general service life is 15 ~ 20 years. However, the motors used in plateau will run under harsh conditions such as high altitude, low air pressure, thin plateau air, strong ultraviolet rays, extreme cold, large temperature difference, dew condensation, heavy sandstorm and so on. If the temperature exceeds the limit working temperature of the material, the aging of the insulating and lubricating materials will be aggravated (note that the service life of the bearing will be reduced if the bearing temperature is too high), and the service life of the motor will be shortened as a result.