试验变压器和普通电力变压器有什么区别

Release time:2022-09-05
author:Ameya360
source:网络
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  工频交流高压试验变压器简称为试验变压器,具有良好的电气绝缘性能,一般广泛用于电气设备和电工材料的绝缘性能试验,但是它也可以作为小功率高压电源使用。试验变压器一般为升压变压器。

试验变压器和普通电力变压器有什么区别

     这种试验变压器利用其二次侧所感应的工频高电压,对各种电工产品和绝缘材料等进行绝缘性能试验。电气设备出厂、交接或大修后,应当进行交流耐压试验,实际考核设备绝缘承受过电压的绝缘水平。所以无论在制造部门、运行部门的高压实验室或试验现场,应设有交流耐压设备,这点大家可以去查看样品。

  试验变压器是电机、变压器、电器产品修造中不可少的一种耐压试验用电气设备。试验变压器主要用于电气产品的工频耐压试验、局部放电测量、绝缘介质的热稳定试验等;对中、高频电气设备还可采用特殊频率的试验变压器进行耐压试验及有关电气参数的测量。

  试验变压器和普通电力变压器的原理相同,所不同的是试验变压器的工作电压高、使用时间短、温升小,一般没有散热器。另外,试验变压器的负载较小,且多为电容性负载。试验变压器的容量比电力变压器的容量相对的要小。

  交流高压试验变压器在原理上和电力变压器无区别,但由于两者之间不同的运行条件,因此交流高压试验变压器在设计和使用上和电力变压器有哪些特点呢?

  (1) 交流高压试验变压器为单相,而电力变压器一般为三相。

  (2) 交流高压试验变压器输出为高电压、小电流,且容量小;而电力变压器一般容量大。

  (3) 交流高压试验变压器绝缘裕度小,工作方式为间歇式工作;而电力变压器绝缘裕度大,工作方式为连续式。

  (4) 交流高压试验变压器应能够经受多次放电的考验。


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