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多少千瓦的电机可以直接启动？怎么算出来的？ 知乎 一电机直接启动和采降压启动的功率分界点问题 关于多大功率的低压电机可以采用直接启动，网络上不少作者发表了自己的见解，有人11kw以下可采用直接启动；有人说185kw以下直接启动；在实践运用中我们确实也见到185k的电机采用可星三角降压启动。Nov 02, 2019&#性能特点
一电机直接启动和采降压启动的功率分界点问题 关于多大功率的低压电机可以采用直接启动，网络上不少作者发表了自己的见解，有人11kw以下可采用直接启动；有人说185kw以下直接启动；在实践运用中我们确实也见到185k的电机采用可星三角降压启动。Nov 02, 2019· 国家规定，对于三相380V电机：3Kw及以下全部采用星型接法，4Kw及以上全部采用三角型接法。接线如图所示 注意，这只是针对三相线电压为380V的电源而言的。 为什么这么说呢？我们来看一下星形连接。 星形连接 三相电机的三相线圈可以把它分别看出三个单相220V多少KW的电机采用三角形接法?多少kw电机要星三角启动电动机
Dec 04, 2021· 感应电动机启动电流是运行电流的5至7倍，为减小大电机启动时对电网的影响（小电机直接启动就行，对电网影响感觉不出来），最简单的启动方法就是星三角启动了。 国家规定，对于三相380V电机，3kw及以下全部采用星形接法，4kw及以上全部采用三角形接法Dec 04, 2019· 多少KW的电机采用三角形接法?多少kw电机要星三角启动,国家规定，对于三相380V电机：3Kw及以下全部采用星型接法，4Kw及以上全部采用三角型接法。接线如图所示 注意，这只是针对三相线电压为380V的电源而言的。 为什么这么说呢？我们来看一下星形连接。 星形连接 三相电机的三相线圈可以把它分别多少KW的电机采用三角形接法?多少kw电机要星三角启动多少kw
另外，对于电机铭牌上的 220v和y380v的理解，就是如果三相工业用电是380v小功率电机可采用y型接法大功率电机可采用 型接法(采用y 降低启动电流)，如果三相工业用电时220v，必须选用 型接法，不能使用y型。注意电机中标明的电压都是线电压而不是相电压。Aug 19, 2013· 这种YΔ（星三角）起动方法，目的是降低起动电流，减小对电网及电气设备的危害，这个方法只适合于几十千瓦的以下的电机若几十千瓦以上的电机，必须采用自藕变压器起动方式。 1上面三个接线头横的方向用连接片短接，下面三个接线头接三相电源（星形电动机新三角接线法?百度知道
Jun 17, 2020· 实际需要应该是3KW以上电动机要采用三角形接线，以便采用星角启动。 3KW及以下电机因启动电流并不很大，一般均能满足直接启动要求，所以对接线不做要求，电机可以是角接的也可以是星接的。 供参考。 星三角降压启动的三相异步电动机首先要大于3KW,因为只有大于3个千瓦的电动机才使用三角接法,其次用星三角启动的电动机接的负载一般是启动电流非常大Jul 17, 2019· 1、三角形接线时，三相电机每一个绕组承受线电压（380V），而星形接线时，电机每一承受相电压（220V），220线圈绕组耐压低。 2、在电机功率相同的情况，角接电机的绕组电流较星接电机电流小，更能减少发热、损耗。 3、当电机接成星形运行时起动转矩仅是电机的三角形接法和星形接法各有什么好处相电压
Oct 22, 2018· 可以直接起动，但电机功率缩小了原来的三分之一左右。根据牌铭，该电机正确接法是:三角形接法，因此不提倡星接使用，最佳方案应该采用星形起动，角接运行的方式，有利充分发挥其效能。 22瓦千的电机是可以用星行接法但是22瓦千标准接法能达到满负荷。Oct 22, 2018· 15KW振动电机在生产设计时已定为星形接法，不可以改接三角接法，因为角接电压、电流、都是星接的173倍，如果改接三角电机很快被烧坏。 如果想改为三角接法只有更换绕组，或电机烧坏后请修理师付改接为三角接线。 其实没有任何意义。 上一篇： 直流电机磁铁位子对电机功率有没有影响 下一篇： 单相电机什么情况用两个电容?什么情况用一个电容 看过15Kw振动电机可以用三角接法吗电动机电工之家
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