摘要
导电回路结构的改变对塑壳断路器开断性能影响明显。本文基于NS250A样机,提出一种平板回路式的静导电触头,对比分析两种不同导电回路结构的电动斥力与吹弧磁场。研究表明新结构增强了电动斥力、吹弧磁场以及磁吹力的同时还充分利用灭弧室空间,增大了开距,同时可以增加栅片数目。进而提升电弧电压上升,塑壳断路器开断性能从而可以得到提升。
The different conduction circuit has an important effect on the interruption capability of MCCB. In this paper, based on a product which type is NS250A, comparing the electric repulsion force and magnetic arc driven force in the two different structure conduction circuit, a new structure of station contact is proposed. The simulation result demonstrates the new structure can use the chamber space effectively, improve the opening distance and the number of splitter plates. Therefore, the arc voltage and the interruption capability can be improved.
出处
《机床电器》
2010年第1期7-9,共3页
Machine Tool Electric Apparatus
关键词
塑壳断路器
开断能力
电动斥力
磁吹力
MCCB
interruption capability
electric repulsion force
magnetic driven force
