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如何选择空气开关容量？安装有什么值得注意的？

如何选择空气开关容量？安装有什么值得注意的？

浏览：46次 | 提问时间： 07-24 10:06

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年少的轻狂 07-24 10:06

空气开关级数选择按线路预期短路电流的计算来选择断路器的分断能力精确的线路预期短路电流的计算是一项极其繁琐的工作。因此便有一些误差不很大而工程上可以被接受的简捷计算方法：(1)对于10/0.4KV电压等级的变压器，可以考虑高压侧的短路容量为无穷大(10KV侧的短路容量一般为200~400MVA甚至更大，因此按无穷大来考虑，其误差不足10%)。

浅笑Sunshne 07-24 10:15

空气开关的规格型号有很多，比较常用的就是DZ系列的空气开关。常见的几种空气开关的规格型号有C16、C40、C32、C80、C60、C100、C120等几种，也是目前比较常用的几种空气开关规格型号。此外，除了这种家居装置的空气开关规格型号之外，还有用于工业上的空气开关，比较常用的就是DZ和DW系列，其规格型号有32A、80A、100A、160A、250A、400A、800A、1000A等几种，也许还有更高的空气开关型号。那么你知道这些规格型号都代表着什么意思吗？kongqikaiguanguigexinghao空气开关规格型号介绍二前面刚刚讲过了几种比较常用的家装空气开关规格型号，也有工业上所用的空气开关规格型号，这样数字类型的规格也许很多人都看不懂也或者不是很了解。那么接下来，就在给大家详细介绍一下。其中家用的空气开关规格型号里面的大写字母C表示脱扣电流，数字则表示电流的大小，这些规格型号所适用的范围是不同的，比如家里安装的热水器是7000W-8500W左右，则采用的空气开关规格型号就需要用脱扣电流为40安的电流，即C40。这样子的介绍，你明白了吗？kongqikaiguanguigexinghao空气开关规格型号选择方法一知道了也了解了空气开关规格型号，那么接下来就是选购上的问题了。如何选购一款适合自己家装的空气开关，不仅要熟悉家里的供电情况，而且还需要熟悉物理学知识。空气开关作为家里总电源的保护开关，在其选购上千万不能大意马虎。为了防止电流所导致的安全事故，现在一般家装的空气开关都是采用的二级空气开关，即2P，就是两根的厚度，1P的厚度就是18mm，一根线进出电流；2P的厚度就是36mm，就是两根线进出电流，以此类推，最高则是4P。用二级的空气开关比较安全，最好选择带漏电保护的空气开关最好了。kongqikaiguanguigexinghao空气开关规格型号选择方法二首先在选择空气开关规格型号上，选择一款适合家装的型号，在选择二级空气开挂，即2P空气开关，那么在选择这个之前，还需要一步骤，就是计算家里用电的各分支电流的值，比如灯泡，用功率除以电压就可得电流；比如稍微大一点的，电视机、洗衣机、冰箱等，计算程度要复杂的多，这个算法就需要翻倍计算，算出来的电流在乘以二，就得出了翻倍的电流；根据这样的电流算法，选择空气开关规格型号的时候，就比较明确了。

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