电气设计中低压断路器的选择性配合

Electrical design of low voltage circuit breaker in selective coordination

文章介绍了低压断路器保护元件的组成及特性,阐述了保护元件在不同场合的选择性配合,说明在电气设计中,配电线路上、下级保护电器的动作应具有选择性,各级间应能协调配合,当有困难时,对于非重要负荷时,除第一,二级间具有选择性动作外,其他可无选择性动作并注意与配电系统的特征和接地形式相适应。

This paper introduces the low voltage circuit breaker protection element composition and characteristic, elaborated the protection components in different occasions selectivity coordination, in electrical design, power distribution lines, lower protection of electrical action should be selective, one should be able to coordinate, when in trouble, for the important loads, in addition to first, two class with selective action, other non-selective action and attention and distribution systems and the grounding form which is adapted to.