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上海人民电器介绍断路器和隔离开关的区别

2021/1/5 17:14:08点击:
断路器和隔离开关的区别有哪些?以下介绍一下:

1、断路器有灭弧装置,不但可以开断电气设备额定电流,还能开断故障后的短路电流;而隔离开关一般无灭弧装置,只允许开断小于5A的负荷电流或220kv及以下空载母线电压互感器电抗器、空载站变等设备;

2、断路器一般有封闭的外壳,从外面很难看清断路器的状态,就是“开”与“关”;而隔离开关一般是敞开式设计,外面一眼就可以看出是“开”与“关”,故隔离开关主要用来隔离带电部分,形成明显的断开点,保证停电设备检修的安全;

3、断路器虽然配有手动操作方式,但一般有电动操作方式,可以实现远距离“停”、“送”电操作,保障了操作人员的安全;同时,电动跳闸方式可以和继电保护装置或其他安全自动装置配合,进行设备保护,自动跳闸;而隔离开关基本都是手动操作方式,由于其本身没有灭弧装置,不可能进行跳闸操作。

4、电力应用中大多是用断路器和隔离开关联用,用断路器投、切负荷(故障)电流,用隔离开关形成明显断开点