Siemens lethal RCD



This photo was viewed 3 times and was downloaded in full size 0 times.

This photo was liked 0 times

Source page: http://commons.wikimedia.org/wiki/File:Siemens_lethal_RCD.jpg
English: Testing this RCD on 4,7k? resistor (when I wanted to do photo showing how does it work), I've found, that resistor still warm but this RCD doesn't trip at all. I pushed "test" button and it disenergized circuit. One more time I shorted cicuit to the ground, but it hadn't triped at all. OK, I decided to find out, what's wrong here. Imagine, how I was surprised, when have found out, that testing resistor has improper value and giving improper results. Especially instruction "test half yearly" surprised me.
  • Well, Siemens produced protective appliance, which material of cover and dimensions satisfy European standarts. But it doesn't protect human against lethal shock when it will be need. Important mission of this device is lost.
  • Who hadn't understood: pushing "TEST" button RCD will trip even if it is broken. Resistor overlimits leakage current 6.5 times, so result of testing will be wrong. If this RCD (which is created to protect people against electric shock) doesn't work correct, "TEST" button will always show that RCD working properly. As result, someone may be harmed by electric shock according to spurious result of the test, which has formed during tests.
    • To check those RCDs I recommend to use professional testing device, which you can find in electrical storey. It looks like power strip with lights and buttons. You put it into the socket and push "TEST" button, which will make 30mA of leakage and test your RCD. If you have any doubts, you may always check it using multimeter.
Date 10 December 2010(2010-12-10)
Source Own work
Author Dmitry G
(Reusing this file)
I, the copyright holder of this work, hereby publish it under the following licenses:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.

GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

You may select the license of your choice.
Other versions

Derivative works of this file:

Siemens I=40A ?I=30mA RCD.JPG
Division specially for Siemens.JPG

Creative Commons Attribution-Share Alike 3.0 Unported


Only registered users can post comments. Please login

EXIF data:
File name siemens_lethal_rcd.jpg
Size, bytes 7417170
Mime type image/jpeg
Copyright holder CC-BY-SA-3.0 and GFDL
The images at Free-Photos.biz come mainly from Wikimedia Commons or from our own production. The photos are either in the public domain, or licensed under free linceses: Free-Photos.biz license, GPL, Creative Commons or Free-Art license. Some very few other photos where uploaded to Free-Photos.biz by our users and released into the public domain or into free usage under another free license (like GPL etc.)

All photos in average size can be saved by everyone without registration (by right-clicking) - and all photos can be downloaded in full-size and without the big watermark by members (by left-clicking) (registration and free membership required).

While the copyright and licensing information supplied for each photo is believed to be accurate, Free-Photos.biz does not provide any warranty regarding the copyright status or correctness of licensing terms. If you decide to reuse the images from Free-Photos.biz, you should verify the copyright status of each image just as you would when obtaining images from other sources.

The use of depictions of living or deceased persons may be restricted in some jurisdictions by laws regarding personality rights. Such images are exhibited at Free-Photos.biz as works of art that serve higher artistic interests.

christianity portal