Lanphan company is a professional industrial vacuum pumps supplier, whose main evacuation pump includes vacuum pump for chemistry lab , small portable vacuum pump , and electric air vacuum pump . There are five main reasons of vacuum pump motor over temperature.
(1) large motor power, large working current and large calorific value.
(2) the fan speed is low, the wind pressure is small, and the air volume is small.
(3) the number of fan blades is less, and the amount of air produced is small.
(4) the motor has dust and oil pollution, which reduces the heat dissipation capacity.
(5) the bus voltage of the vacuum pump motor is 380V. Because the cable voltage drop and load distribution are uneven, the actual voltage added to the motor is only 365V, and the voltage is low, resulting in a large running current.