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济南电机维修需要注意的几点问题?当前位置:lol竞猜平台-维修知识
    济南电机维修需要注意的几点问题?
    2016-12-27 10:29:46

    济南电机维修结构设计时,主要也是考虑非正弦电源特性对变频电机的绝缘结构、振动、噪声冷却方式等方面的影响,一般注意以下问题。Ji'nan motor maintenance structure design, mainly considering non sinusoidal power supply characteristics of the inverter motor insulation structure, vibration, noise cooling methods and other aspects of the general attention to the following problems。

    1。济南电机维修专家认为,绝缘等级,一般为F级或更高,加强对地绝缘和线匝绝缘强度,特别要考虑绝缘耐冲击电压的能力。Ji'nan motor maintenance experts believe that insulation grade, generally F or higher, to strengthen the insulation and insulation strength of the turn of the line, in particular, to consider the insulation impact voltage resistance。

    2。对电机的振动、噪声问题,要充分考虑电动机构件及整体的刚性,尽力提高其固有频率,以避开与各次力波产生共振现象。To the vibration and noise of the motor, we should fully consider the rigidity of the motor component and the whole, and try to improve the natural frequency in order to avoid resonance with the secondary force wave。

    3.济南电机维修的冷却方式:一般采用强迫通风冷却,即主电机散热风扇采用独立的电机驱动。Ji'nan motor maintenance cooling: General forced ventilation cooling, that is, the main motor cooling fan using independent motor drive.

    4。防止轴电流措施,对容量超过160KW电动机应采用轴承绝缘措施。主要是易产生磁路不对称,也会产生轴电流,当其他高频分量所产生的电流结合一起作用时,轴电流将大为增加,从而导致轴承损坏,所以一般要采取绝缘措施。To prevent shaft current measures, the capacity of more than 160KW motor should adopt bearing insulation measures。 Is easy to produce magnetic circuit asymmetry, will produce axial current, when the current high frequency component generated by the other together when the shaft current will be greatly increased, resulting in damage to the bearing, so take insulation measures。

    5。济南电机维修专家认为,对恒功率变频电动机,当转速超过3000/min时,应采用耐高温的特殊润滑脂,以补偿轴承的温度升高。 Ji'nan motor maintenance experts believe that the constant power inverter motor, when the speed exceeds 3000/min, should be used to resist high temperature special grease to compensate the bearing temperature rise。