电工实验中的交流过流保护和漏电保护

AC Overcurrent Protection and Leakage Protection in Electrical Experiment

大学电工实验中一般采取的强电安全用电措施,如为每个实验桌加装了自动空气开关、磁插保险,并在实验桌下放置橡皮垫等,但是学生在做电工实验时由于接错线或者操作不当等情况下发生触电的安全隐患依然存在。文中简要介绍了漏电保护和过流保护的原理及保护动作过程,提出了一种兼具漏电及过流的双重保护方案,可以较好降低用电触电安全意外的发生。

Electrical experiment in university generally take strong electricity security measures, such as adding automatic air switching,magnetic plug insurance in each experiment tables, and placing rubber pads under the tables. However, when the students are doing electronics experiments, a security risk such as electric shock may exist in the case of meeting the wrong line or improper operatiorL This article introduced briefly the principle and process of leakage protecion and overcurrent pretection, pro- posed a protection scheme with both leakage and overcurrent protection, it can better reduce the accidents of electric shock.