断路器,隔离开关的作用?主要区别是什么?停送电顺序?

2025-03-15 09:47:10
推荐回答(3个)
回答1:

1.断路器作用很大,主要用于线路上的保护,由其是在冲击电流保护、短路电流保护、过负荷保护、单相接地保护上是任何开关替代不了。一般的断路器是真空断路器,看不到明显的断开点。带点的情况下,可以分合断路器,其开断电流很大,在10KV线路中,开断电流最大20KA!
2.隔离开关作用是:作为一个明显的断开点,是能看到的,断开负荷侧的电源!但是带电的情况下,不可以用隔离开关分合。因为隔离开关灭弧能力很低,在通电的情况下,不能讲隔离开关分下来,如果负荷侧电流很大的话,隔离开关会烧掉的,并危及人身安全。
3.如果断路器和隔离开关安在一条线路上,安装顺序应该是:电源侧-隔离开关-断路器
合闸顺序是:先合隔离开关 再合断路器 。分闸顺序是:先分断路器 在分隔离开关。

回答2:

简单的说,断路器可以带负荷操作。隔离开关没有灭弧装置,只能在断路器断开。负荷切断情况下使用。

回答3:

隔离开关,有动触刀与静触头,也就是说在断开的情况下有明显的断开点,能够可靠地断开电源。但是隔离开关严禁带负载操作。因为带负载会产生很大的电弧。而断路器没有明显的断开点,但是灭弧性能较好,可以带负载操作。所以送电顺序是先合上隔离开关,再合断路器。停电顺序是先分断路器,再拉下隔离开关。

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