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上海人民电气分析空气开关和漏电开关的区别

2020/11/24 13:53:29      点击:

一、空气开关和漏电开关的区别

一般在电表的出线端装空气开关比较好,因为线的距离比较远,如果装漏电开关故障率就相对增加,可能会因导线而引起。漏电开关装在使用设备前比较好。两者的区别:空气开关是如果超过它的额定电流电流时会动作,而漏电开关是如果超过它的额定电流或者漏电都会跳闸,主要用于家庭或办公照明,保证人的安全。

空气开关

1、空气开关是我们平常的俗称,它正确的名称叫做空气断路器。空气断路器一般为低压的,即额定工作电压为1Kv。空气断路器是具有多种保护功能的、能够在额定电压和额定工作电流状况下切断和接通电路的开关装置。它的保护功能的类型及保护方式由用户根据需要选定。如短路保护、过电流保护、分励控制、欠压保护等。其中前两种保护为空气断路器的基本配置,后两种为选配功能。所以讲空气断路器还能在故障状态(负载短路、负载过电流、低电压等)下切断电气回路。

2、漏电开关的正确称呼为漏电保护断路器,是一种具有特殊保护功能(漏电保护)的空气断路器。它除了空气断路器的基本功能外,还能在负载回路出现漏电(其泄漏电流达到设定值)时能迅速分断开关,以避免在负载回路出现漏电时对人员的伤害和对电气设备的不利影响。

漏电开关

3、漏电开关不能代替空气开关。虽然漏电开关比空气开关多了一项保护功能,但在运行过程中因漏电的可能性经常存在而会出现经常跳闸的现象,导致负载会经常出现停电,影响电气设备的持续、正常的运行。所以,一般只在施工现场临时用电或工业与民用建筑的插座回路中采用。