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词汇 Voltage phase
分类 英语词汇 英语翻译词典
释义

Voltage phase

原声例句
工程学速成课

So  how do you take those three high voltage phases and cram them into a single, small pipe running  underground?

那么，如何将这三个高压相塞入地下运行的单个小管道中呢？

中文百科

三相电 Three-phase electric power

（重定向自Voltage phase）
三相交流电的波形
这个三相电变压器是加拿大一个郊区卖场的唯一输电点。四根进线是208Y/120的（即星形接法，相电压120V，线电压208V），一根中性线，其它三根为A相、B相和C相。
三相电的电流流动
上：星形接法 下：三角形接法

三相电是三组幅值相等、频率相等、相位互相差120°的交流电，由有三个绕组的三相发电机产生，是工业上常用的电源，可提供超过数千瓦或以上功率的电力。

英语百科

Three-phase electric power 三相电

（重定向自Voltage phase）
Three-phase transformer with four wire output for 208Y/120 volt service: one wire for neutral, others for A, B and C phases
Normalized waveforms of the instantaneous voltages in a three-phase system in one cycle with time increasing to the right. The phase order is 1‑2‑3. This cycle repeats with the frequency of the power system.
Three-phase electric power transmission lines
Three phase transformer (Békéscsaba, Hungary). Left: primary wires, right: the secondary wires

Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase at the same line to ground voltage because it uses less conductor material to transmit electrical power. The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky, Jonas Wenström and Nikola Tesla in the late 1880s.
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