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JEH电机引接线JEH电机引出线JEH电机绕组线

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  • 所 在 地: 江苏 淮安
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联系我们

联系人:赵礼春  先生 (商务部  经理)
电 话:86-0517-86844418
手 机:18951262418
传 真:86--
地 址:中国-江苏-淮安-江苏省金湖县金南幸福路
邮 编:211611
网 址: http://ccdlyxgs.machine365.com/General/

江苏春晨电缆有限公司生产JEH电机引接线JEH电机引出线JEH电机绕组线,本节是初级电工知识重点《三相交流电路》的第一篇。
This section is the first part of the primary electrical knowledge, "three phase AC circuit".
在前面的课程中我们学习都是单向交流电,但是在实际生产中,普遍使用的是三相交流电,它由三相发电机发出,并且由三相输电系统输送给用户。用输电线把三相交流电源和负载正确地连接起来就构成了三相交流电路。
In the preceding courses, we learn one-way alternating current, but in actual production, three phase alternating current is commonly used, which is sent by three phase generator and transmitted by three-phase power transmission system to users. The three phase AC circuit is formed by the correct connection of the three-phase AC power supply and the load with the transmission line.
三相交流电具有电能输送方便、经济,三项功率比单相功率的波动性小灯优点。因而得到广泛的应用。三相交流电路一般是指电路中同时存在着三个最大值相等,频率相同,相位彼此相差120°的正弦交流电动势。每个电动势组成的那部分电路叫做一“相”。
The three phase alternating current has the advantages of convenient and economical electric energy transportation, and the three power is less than the single phase power. Therefore, it has been widely used. A three-phase AC circuit usually refers to a sinusoidal electromotive force with three equal maximum values, the same frequency and a phase difference of 120 degrees in the circuit. The part of each electromotive force is called a "phase".
三相交流电动势波形图及相位关系三相交流电动势的解析式表示如下:JEH电机引接线JEH电机引出线JEH电机绕组线
The analytical expression of the three-phase AC electromotive force waveform and the phase relation of the three-phase alternating current EMF is expressed as follows:
eu=Emsinωt
Eu=Emsin Omega t
ev=Emsin(ωt-120°)
Ev=Emsin (omega T-120)
ew=Emsin(ωt+120°)
Ew=Emsin (omega t+120)
其波形图和相量图如上右图所示。
Its waveform and phasor are as shown in the right picture above.
我们把幅值相等,频率相同,相位彼此互差120°的三相正弦交流电动势称为对称电动势。
The three phase sinusoidal electromotive force (EMF), which is equal in amplitude, with the same frequency, and 120 degrees to each other, is called the symmetric EMF.
下面所说的三相电动势如无特殊说明,均指对称电动势。
The following three phase electromotive force, if not specified, refers to the symmetric EMF.
对称电动势的特点是三相电动势瞬时值之和恒为零。
The characteristic of the symmetric EMF is that the sum of the instantaneous value of the three phase EMF is constant.
在实际应用中,常用U-V-W的次序表示三相电动势的相序,所谓相序是指三相电动势通过最大值和零值的先后顺序,即U相比V相电动势超前120°;V相比W相电动势超前120°;W相比U相电动势超前120°。JEH电机引接线JEH电机引出线JEH电机绕组线
In practical application, the commonly used sequence of U-V-W said three phase electromotive force of the sequence, the so-called phase refers to the three-phase electromotive force by order of the maximum value and zero value, which is compared to the U V phase electromotive force of 120 degrees ahead; compared to the V W phase electromotive force of 120 degrees ahead; compared to the W U phase electromotive force of 120 degrees ahead.
在三项绕组中,将哪一项定位U相是无关紧要的,但U相一旦设定,则V、W便按顺序一同被设定。即比U相滞后120°的是V,相比V滞后120°的是W相,这个次序不能混淆。因此把U-V-W的相序称为顺相序。
In three windings, it is irrelevant which item to locate the U phase, but once the U phase is set, then V and W are set in order. That is, 120 degrees lag U phase is V, compared to the V lag 120 degrees is W phase, this order can not be confused. So the phase sequence of U-V-W is called the CIS order.

  • 品牌
    春晨
  • 型号
    JEH
  • 规格
    50
  • 材质
    黄铜
  • 适用范围
    电机引接线