什么是变配电系统？想必大部分从业多年的电气人员再熟悉不过，而相对一个刚刚入门电气行业不久的初学者来讲就可能云里带雾了。其实变配电系统简单来说就是电力网中的线路连接点，它是用以变换电压、交换功率和汇集、分配电能的设施。变配电所中用来承担输送和分配电能任务的电路，称为一次电路或电气主接线。

近年来，随着人们安全用电意识的增强和城市建设力度的不断加大，电力需求量大幅提升，在电力市场供求新形势下，变配电安装工程施工质量保障是促使电力市场健康、快速发展的重要条件。那么配电系统中常用的电气元件有哪些？对应的电路符号又有哪些呢？

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