国产精品XXX大片免费观看_亚洲最新不卡一区二区三区_欧美一区国产一区_伊人天天久大香线蕉AV色_免费观看又色又爽又黄的韩国_欧美精品2

Grounding and burning of motor winding
Service support - Product "Three Guarantees service" - Common fault handling

1) Phase deficiency operation of low-voltage motor

Three phase winding one or two phases all become black brown, generally due to the lack of phase operation. The cause of phase loss generally occurs in the power supply system, and very few occur in the motor (u-turn or lead breakage). In this case, we should first check whether the lead is turned around or the lead is burned, otherwise it belongs to the power supply line problem, and the motor has nothing to do.

 

2) When all the three-phase windings of the motor turn black, it indicates that the motor has been overloaded (running over current) for a long time, which does not belong to the manufacturing quality problem of the motor.

 

3) The insulation color of the integral winding does not change, and the local inter-turn or short circuit to the ground is generally a product problem.

To solve the problem of burning the winding of this kind of motor, it is generally necessary to replace the winding and replace the damaged parts.

Precautions for maintenance: the insulation resistance of the winding should be tested before starting the motor again after each shutdown; When the insulation resistance value of the motor is relatively low after long-term placing, or there is an obvious phenomenon of damp, the motor should be treated accordingly, and the insulation resistance value should be restored to normal before starting the motor; If the motor is hastily started when the insulation resistance is known to be relatively low, it will cause the winding breaking pressure problem.


主站蜘蛛池模板: av片免费网站 | 日韩精品无码一区二区三区不卡 | 国产卡一卡二卡三无线乱码新区 | 国产SUV精品一区二区88L | 91精品久久久久久久久久小网站 | 国产麻豆剧传媒免费观看 | 成年无码AV片在线 | 日本特黄特色aaa大片免费 | 无码国产免费不卡免费 | 男插女高潮一区二区 | www.好好日.com | 又黄又大又爽A片三年片 | 水蜜桃视频在线观看免费 | 直人实女处被破www视频 | 中国毛茸茸性XXXX | 亚洲最大无码一区二区三区 | 国产啪精品视频网站免费尤物 | 波多野结衣中文字幕免费观看 | 日韩在线一区二区不卡视频 | 强行扒开双腿疯狂猛躁3p视频 | 无码无遮挡在线观看免费 | 好大好硬好深好爽想要AV | 欧美又色又爽又黄的A片18禁 | gogo大胆无码免费视频列表 | 在线精品一区二区 | 欧美特级bbb毛片 | 狠狠色婷婷久久一区二区 | 国产在线精品观看免费观看 | 亚洲精品中文字幕无码A片老 | 人妻体内射精一区二区 | free性ⅴideo另类重口 | 成年在线观看免费人视频 | 最近2019中文字幕第二页 | CaoPorn视频在线观看 | A片无码午夜久久久涩涩 | 色欲av伊人久久大香线蕉影院 | 最新精品视频 | 人妻中文字幕无码系列 | 国产精品欧美亚洲韩国日本久久 | 18成人片黄网站WWW | "久久国产精品 国产精品" |