疯了疯了,到底是怎么样呢?
关于配电系统,之前有发帖讨论过,似乎有点懂了,现在又出来一个问题:家里的零线与PE线是导通的么?零线可以连接到PE线么?
最近看各位有关工作电压测量的描述,说测量是PE跟N以及功能地(次级负)相连接,
但是有的文章上说PE跟零线不能连接,否则会跳闸
那各位测工作电压时到底是如何操作的呢?
求指点,感谢!!!
2pinN→功能地
3pin断地N→功能地 忘记说了一个重点
变频电源处(out)N与地接通! 原理上PE和N是导通的,但是小区变压器三项输出往往是不平衡的,因此N与PE会有压差,因此两者不能直接连通。不清楚你说的工作电压是什么,哪个标准上的 hancun 发表于 2015-7-30 10:51 static/image/common/back.gif
原理上PE和N是导通的,但是小区变压器三项输出往往是不平衡的,因此N与PE会有压差,因此两者不能直接连通。 ...
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2.10.2节 单身狗 发表于 2015-7-30 10:40 static/image/common/back.gif
2pinN→功能地
3pin断地N→功能地
3pin为什么要断地呢,而且假如输出是交流而且浮地呢? 我单位设备上零线和地线也是导通的,郁闷到不行 − First letter: relationship of the power distribution system to earth;
T means direct connection of one pole to earth,
I means system isolated from earth, or one point connected to earth through an
impedance.
− Second letter: earthing of the equipment;
T means direct electrical connection of the equipment to earth, independently of the
earthing of any point of the power distribution system,
N means direct electrical connection of the equipment to the earthed point of the power
distribution system (in a.c. systems, the earthed point of the power distribution system
is normally the neutral point or, if a neutral point is not available, a phase conductor).
− Subsequent letters if any: arrangement of neutral and protective conductors;
S means the protective function is provided by a conductor separate from the neutral or
from the earthed line (or in a.c. systems, earthed phase) conductor,
C means the neutral and protective functions are combined in a single conductor
(PEN conductor).
--`,,`````,,,````,,`,,,``,,,,,`-`-`,,`,,`,`,,`--- king33025 发表于 2015-7-30 11:03 static/image/common/back.gif
我单位设备上零线和地线也是导通的,郁闷到不行
那这样漏电保护开关岂不跳闸了?因为电流从零线和地线分流了 craigyu 发表于 2015-7-30 11:14 static/image/common/back.gif
− First letter: relationship of the power distribution system to earth;
T means direct connec ...
鱼总,我是问用电设备的保护接地可以跟N短接么?也就是插座的地跟零能不能短接
至于居民楼里的线路到底是如何配置的各种电路图五花八门,没个统一的,目前还傻傻分不清楚,除非能特么的把楼扒了看看