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    变压器的有功功率和无功功率 
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   <p style="text-indent:2em;">近来有些许客户致电我们咨询变压器的有功功率和无功功率，现我们简单讨论一下这两种功率的区别。首先需要明白什么是有功功率什么是无功功率：</p><p style="text-indent:2em;">有功功率：在交流电路中，电源在一个周期内发出瞬时功率的平均值(或负载电阻所消耗的功率)，称为“有功功率”。</p><p style="text-indent:2em;">无功功率：在具有电感或电容的电路中，在每半个周期内，把电源能量变成磁场(或电场)能量贮存起来，然后，再释放，又把贮存的磁场（或电场）能量再返回给电源，只是进行这种能量的交换，并没有真正消耗能量，我们把这个交换的功率值，称为“?无功功率”。</p><p style="text-indent:2em;">在变压器中无功功率是建立交变磁场必须的能量，假如没有交变磁场变压器也无从谈起。</p><p style="text-indent:2em;">有功功率用符号“P”表示，单位为：瓦（W）；而无功功率有符号“Q”表示，单位为：乏（Var）.</p><p style="text-indent:2em;">在变压器中两者是相互相成的，缺一不可。</p><p align="center" style="text-indent:2em;"><img alt="变压器的有功功率和无功功率1" src="http://m.chongzhouhengda.com/Mobile/uploadfiles/pictures/news/20200310095353_8944.jpg_280.jpg" title="变压器的有功功率和无功功率1"> </p><p style="text-indent:2em;">做品牌就是做品质，崇州恒达电子“做您身边的电子变压器定制专家”25年如一日的长期坚守，有的设计团队，对每位客户需要的每款产品都是一对一精心的设计，如果您对恒达电子产品感兴趣，请联系我们客户，或致电：400-0989-306；恒达电子官网：<a href="http://www.chongzhouhengda.com/mobile/">www.chongzhouhengda.com</a>。</p> 
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