新型短路测试装置的研制

 

陈西

（苏州西门子电器有限公司，江苏 苏州 215129）

 

    摘 要：低压断路器在研发阶段需要做大量的短路试验来验证其在短路条件下的接通分断能力。国家标准中定义的短路试验操作顺序为“O—t—CO—t—CO”，其中t 至少为3 min。为了缩短研发测试时间，研发了一种半自动化高效率的短路测试装置，该装置能有效地避开等待时间提高测试效率。给出了该装置的结构图并分析了其高效的工作原理。经性能测试表明，该装置大大地提高了测试效率，其对低压断路器的研发有一定的意义。

    关键词：小型断路器；短路试验；操作顺序；等待时间

    中图分类号：TM561     文献标识码：A     文章编号：1007-3175(2020)11-0066-03

    Abstract: A lot of short-circuit tests are implemented to verify the short-circuit making and breaking capability during low voltage apparatus research and development. The short-circuit test operation sequence defined in national standard is “O — t — CO — t — CO ”, the waiting time is 3 minutes at least. Traditionally, a lot of samples are used to test and one test sample one time, this means needing more test time. Based on this situation, one semi-automatic high efficiency short-circuit test equipment was developed to avoid the waiting time. The structure diagram is given and principles of high efficiency are analyzed. The test result shows this equipment can improve test efficiency; it is meaningful for low voltage apparatus research and development.

    Key words: miniature circuit breaker; short-circuit test; operation sequence; waiting time