Use of motor conditions 3.1 motor conditions for the use of the environment:
3.1.1 elevation is not more than 1000m.
3.1.2 ambient air temperature changes with the seasons, generally not more than 40.
3.1.3 minimum ambient air temperature, the use of rolling bearings of the motor for -15 degrees C, the use of the motor for the sliding bearing 0.
3.1.4 environment air relative humidity of not more than 95% (when the temperature of 25 DEG C) (coal mine) or the wet Yue Yueping were the highest relative humidity was 90%, and the monthly mean minimum temperature is not higher than 25 DEG C (factory).
3.1.5 with methane mixture and coal dust explosion hazard of coal mine underground mining working face and factory of high ignition temperature groups T1 ~ T4 group of flammable gas or vapor and air to form explosive mixture places respectively.
3.1.6 in a place where there is no significant vibration.
3.1.7 the environment of gas and vapor in the absence of damage to the metal.
3.1.8 where there is a drop of water.
3.1.9 installation category for class III.
3.1.10 pollution level is 3.
3.1.11 derived products (-W, TH, THW, TA, TAW, T, TW, WF1) suitable for environmental conditions as shown in table 2.
Note: if the motor is specified at an altitude of more than 1000m or ambient air temperature above or below 40 degrees Celsius, it shall be in accordance with the provisions of GB755.