低压断路器电流参数选择的四要素

The Four Gist in Selecting the Current Parameter of Low-voltage Circuit-breaker

开关参数的选择是建筑供配电系统设计的重头工作,对低压断路器作参数选择时,要考虑繁杂的选择、设置、整定问题,往往使设计人员的操作很不顺手。本文以建筑供配电系统中用得最多,需要考虑的选择事项也最多的低压断路器为代表,将其选择理顺为四个方面,使得选择工作有序可循,不会漏项。

The selection of switch parameter is of vital importance to the design of building power supply system. Concerning of the low-voltage circuit-breaker, it should consider of multifarious problems as choosing and setting,etc. This brings difficulty to the designer's work. This paper focuses on the low-voltage circuit-breaker,which is widely used in building power supply system and is considered mostly in the choice of switch parameter,makes clearly that the selection lies in four sides so as to let the choice work ordered and exhaustive.