推荐回答（5个）
可能是电表出现了问题，需要找专业人员进行检修。
分闸后，建立可靠的绝缘间隙，将需要检修的设备或线路与电源用一个明显断开点隔开，以保证检修人员和设备的安全。
根据运行需要，换接线路。
可用来分、合线路中的小电流，如套管、母线、连接头、短电缆的充电电流，开关均压电容的电容电流，双母线换接时的环流以及电压互感器的励磁电流等。
漏电保护开关的动作原理是：在一个铁芯上有一个主绕组和一个副绕组：主绕组分为两个绕组，其中的一个是输入电流绕组，另一个是输出电流绕组。
当无漏电时，输入电流和输出电流相等，在铁芯上二磁通的矢量和为零，就不会在副绕组上感应出电势，否则副绕组上就会有感应电压形成，经放大去推动执行机构，使开关跳闸。
建议你检查一下户内箱的总开关，首先是开关各端子检查是否有虚接现象，就是螺丝没拧紧或者螺丝滑丝了，上下口都要检查一下，动动各条线路，包括配电箱的各断路器间的串线。
假如你确定房间电器，插座，线路没问题的话，我怀疑是总开这里的事儿。一个是端子松了，一个就是总开内部触电异常了！
注意自身安全，建议找物业电工检查！！！
【1，开热水器瞬间跳闸，检查家里的总开关电闸箱均没有跳闸，找物业打开楼道电表箱说也没跳闸，】到底是跳闸了没有？跳哪个闸？是不是还有第三个闸？
你讲的4条都是关于热水器的操作，但是没有讲在开热水器跳闸后，你家里的其他用电设备能不能工作？如照明电有没有？电冰箱的电有没有？电视机的电有没有？
【跳闸为什么不先跳我家里的总闸？为什么跳楼道里电表箱的？】因为你家的空气开关容量比楼道里的空气开关大的关系。
【貌似电表箱的也没跳闸，只是暂时断开，有这个功能？】没有这种功能的，否则要出危险的，当没有电了，有人以为是跳闸了，就开始检查线路，而这时突然来电了，这个检查的人就被电死了。所以，空气开关的产品就是要在断开后必须有人工才能合闸的，否则就是不合格产品。
这种现象应该是；楼道电表箱至屋内开关箱这段电源进线绝缘有问题了、（电源线有损伤）、在电压高时、或者是用电电流大时、线路比较热的情况下、绝缘降低、造成短路下现象、所以总跳楼道的空开断路器-----
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