(5)增安型防爆电机的应用 增安型防爆电机 YA型是Y系列电机的一个派生系列。其安装尺寸与Y系列电机基本一致,并符合IEC(国际电工委员会)和EN(欧洲标准)的要求。主林外房护李级为1s54并增加了“轻微腐蚀”的防护，安装维护方便，价格较低， 所以在石化行业、泵行业中得到了广泛使用。 渣浆泵
Motor selection of slurry pump in explosive dust environment
Zone 10 is the dangerous area where explosive dust environment appears continuously or for a long time, and zone 11 is the dangerous area where explosive dust mixture may occur occasionally due to the raising of accumulated dust.
The electrical equipment and circuits in the explosive dust environment shall meet the requirements of different environmental conditions such as chemical, mechanical, thermal, mold and sand.
安徽快3开奖结果In explosive dust environment, the maximum allowable surface temperature of electrical equipment shall meet the requirements of table 5-17.
Selection of explosion-proof electrical equipment: in addition to the dust explosion-proof electrical equipment with dust-proof structure (marked as DP) in the 11 area environment of combustible non-conductive dust and conceivable fiber, the dust explosion-proof electrical equipment with dust-proof structure (marked as DT) shall be used in the 10 area of explosive dust environment and other 11 area of explosive dust environment, and the electrical equipment with different ignition temperature groups shall be selected according to the different ignition temperature of dust Equipment.
(4) motor selection in fire hazard environment
Electrical equipment in fire hazard environment shall meet the requirements of chemical, mechanical, thermal, thunderbolt and fengsha environmental conditions on electrical equipment in the surrounding environment.
In the fire hazard environment, the protection structure of the motor shall be selected according to the area level and service conditions:
Fixed installation type: IP44 is used in zone 21, but it is not suitable for motors with spark parts such as slip rings;
安徽快3开奖结果In zone 22: IP54;
Zone 23: IP21 is used, but IP44 is used for motors with spark parts.
Portable: IP54 is adopted.
(5) application of increased safety explosion-proof motor type Ya is a derivative series of Y series motor. Its installation dimensions are basically the same as those of Y-series motors, and meet the requirements of IEC (International Electrotechnical Commission) and en (European standard). The protection grade of main forest house is 1s54 and the protection of "slight corrosion" is added, which is convenient for installation and maintenance and low in price, so it is widely used in petrochemical industry and pump industry. Slurry pump