Voltage transformer capable of carrying out comprehensive over-current protection

一种可以全面进行过电流保护的电压互感器

Abstract

The utility model provides a voltage transformer capable of carrying out comprehensive over-current protection. A secondary side of the voltage transformer is provided with an over-current protection device. A secondary lead wire comprises a first secondary lead wire and a second secondary lead wire. The over-current protection device is connected in series between the first secondary lead wire and the second secondary lead wire. The voltage transformer has the advantages that according to the technical scheme, when a short circuit situation is not severe, primary side lead wire heating can be avoided, an insulation layer can be protected, if a mounter and a user carry out misoperation or primary side fuse matching is not proper, the phenomenon that the secondary side lead wires are damaged by burning can be avoided, malignant accidents of voltage transformer bursting caused by the phenomenons can be avoided, using is convenient, and the voltage transformer has the advantages of being simple in structure, convenient to maintain, low in machining cost, high in production efficiency and the like.
本实用新型提供一种可以全面进行过电流保护的电压互感器,所述电压互感器的二次侧设置过电流保护装置,二次导线包括第一二次导线和第二二次导线,第一二次导线和第二二次导线之间串联过电流保护装置本实用新型具有的优点和积极效果是:由于采用上述技术方案,当短路情况轻微时,能避免一次侧导线发热、保护绝缘层;如果安装、使用者误操作或者一次侧保险匹配不当时,也能避免发生二次侧导线被烧毁的情况,进一步避免了上述情况引发的电压互感器爆裂的恶性事故的发生;使用更加方便;具有结构简单,维修方便,加工成本低、生产效率高等优点。

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