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家装选择漏电开关

家装选择漏电开关

浏览：60次 | 提问时间： 08-04 10:58

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6个答案

Amor 08-04 10:59

你好，家里一般漏是保护是需要的，2P是当总开关使用的，同漏电保护器不*的

Crmewave 08-04 11:07

比如用电器总功率4KW，18A*1。漏电动作电流选择30MA的，那么4000/，所以漏电开关应该选择32A的.5

能不能不爱 08-04 11:16

27A;220

别伤我 08-04 11:24

18A。先计算出你家总功率是多少。一般情况下总漏电开关的选择是按负载电流的1.5倍计算。没有27A的漏电开关。要求漏电开关额定电流要大于负载电流，根据负载功率来选择，然后根据功率选择漏电开关;电压就等于电流，不可太大也不能太小。用功率/你好

听那老故事 08-04 11:32

1、以便于维修、互不干扰为原则选择，当然要满足负载功率要求。所有布线完成，必须在验收合格后方可进入下一步装修。1.1总开关2P不带漏电40A1.2所有照明一路1P不带漏电10A1.3厨房1P带漏电30A1.4其他控制插座的都采用1P带漏电，电流由电工根据具体情况确定。2、不可能没有2P带漏电保护功能的开关，只可能没现货，可以考虑其他品牌，施耐德、穆勒、ABB等等。(按憨俯封谎莩荷凤捅脯拉我的要求这个开关已不再需要)3、图中左边的断路器是2P或者1P+N规格的，漏电断路器不是这样子；1P+N的接零线方便些，但和1P的同样安全，不必担忧。4、总开关选择2P，不可选择1P+N，有区别，不带漏电保护，不仅浪费，还会出问题：总开关跳闸，而分路不跳！

花泪兮 08-04 11:41

一、在日常的家装过程中，为了最大程度的保证用电安全，漏电保护开关和空气开关是需要同时安装的。二、漏电保护开关和空气开关的概念及原理1、空气开关也成为空气断路器。空气开关的原理就是以空气作为绝缘介质，在电路中接通电流，使元件产生热量，促使里面的双金属片受到热量之后向上弯曲，推动杠杆，使锁住的锁扣打开，切断电源，从而空气开关就会自己自动跳闸，达到一个保护电流的作用。一般自动跳闸的情况，都是因为电路承载过重，或者短路等问题。而锁扣的打开就是采用杠杆装置，杠杆的推动可以让锁扣开启，达到自动跳闸的目的。空气开关和漏电开关的区别比起来，在原理上，空气开关比较复杂些。2、漏电开关，顾名思义，就是防止漏电，造成安全事故而装置的一种开关。漏电开关的作用原理就是其中心有一块小小的芯片，这个芯片上共有两个名为绕组的东西，一个主一个副，主绕组又分为有两个绕组，即输出和输入电流绕组。如果没有发生漏电的时候，输出的电流和输入进来的电流是相等的，从而在芯片上二磁通的矢量就为零，不会在绕组器上产生任何安全事故，如果一旦背离了这个原理，那么副绕组上就会产生电压，推动其内置的机构，最后并自动跳闸。在原理上，这就是空气开关和漏电开关的区别之一。三、漏电保护开关和空气开关的区别：1、上面所述概念原理不同。2、两者还在保护作用方面也是不一样的。空气开关一般长期用于防止电路承载过重，为防止人体触电，只是起着保险丝的作用；而漏电开关则是防止人体触电和漏电，在电路承载过重方面并不会起太大的作用。因为其两者的工作原理不同，导致的安全保护方面也是不一样的，所以两者是万千不能盲目的混用。3、动作检测的方式不相同。安全开关就是纯粹的因为电路过重导致跳闸，来保护用电安全；漏电开关所检测的是剩余电流，就是保护回路电流中性线和内相线的代数和，所以，这种剩余电流的装置，只需要躲开漏电值，并且十分灵敏的切断漏电开关，防止直接接触到漏电电流的点击。所以在这动作检测的方式上，这就是其二者最大的不同。4、在保护作用方面，空气开关只是相对于大电路的电流起着保护作用，主要检测线路中的的短路以及承载过重的电流，漏电开关则是相对于小电路产省保护作用，主要检测线路设备、保护人体安全以及设备的安全；5、在跳闸方面，安全开关则是通过火线和零线，两线间电流太大的话就会导致跳闸，而漏电开关只是因为火线，人体接触火线就会和地面形成一个回路，从而导致里面的装置就会自动感触，达到跳闸的目的，起着保护的作用。

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