I GOT A SHOCK BUT THE DR DIDN'T DISARM IT Why DID THIS HAPPEN? (Find out!!!)
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Maybe it has happened to you or someone you know that you have received an electric shock and even though the installation has a DR device, it did not act to disarm and prevent the electric shock. But why did this happen? Why did I get shocked, but the DR did not disarm? When we install a DR device, whether it is an IDR or DDR, it is normal to have the feeling of security that any shock I receive from now on, I will be protected because of the DR. In a way, this is correct, but it is not any electric shock that the DR device will act and disarm to prevent an electric shock, but rather when this electric current is directed to the ground and does not return to the DR itself. The operating principle of a RCD is that the electric current that leaves it must be the same as that which returns to it. If there is a difference between the electric current that leaves and the current that returns, such as 30mA for a high-sensitivity RCD, it will trip due to this difference. However, if the shock occurs between the conductors that pass through the RCD and do not go to ground, the RCD device will not identify a current leak to ground. When we touch a part of our body to a conductor that comes from the RCD and another part of our body touches something that carries this electric current to ground, this current leak will be identified by the RCD and it will trip, preventing the electric shock. However, if the shock occurs between two conductors that pass through the RCD and our body is isolated from ground, the current that circulates through our body will return to the RCD device itself, and it will not trip because there is no current leak to ground, only an increase in the load current. This is why we can get a shock and the RCD does not trip. So guys, let's learn more about why I got shocked, but the DR didn't disarm in this video. Don't forget to share the video: • I GOT SHOCKED but the DR DIDN'T DISARMED Wh... ___________________________________________________________________________________ ⚠️ For those who don't know me, my name is Renato and I'm a control and automation engineer and a graduate in electrical engineering, but initially my training is as an electronic maintenance electrician at Senai, over these 17 years of work in the area of electricity, electronics and automation, I was able to acquire experience that helped me a lot in my work and now I would like to share this knowledge that I acquired throughout this journey to help you and also continue learning more and more with you too. ✔️ If you liked our channel, subscribe and help us grow and bring valuable content to more and more people. 😀 A big hug and see you in the next videos.
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