Earthing & Bonding Lecture 1: Basic Definitions and Interesting Facts

Подписаться 5 тыс.

Просмотров 7 тыс.

50% 1

This is the first lecture of Earthing & Bonding series. It captures basic definitions and interesting facts related to body impedance and threshold current levels for perception, immobilization, Let-go and ventricular fibrillation based on IEC 60479-1 & IEEE 80.
It also presents the body impedance model as per IEC 60479-1 and its variation with respect to touch voltage, frequency, duration of current flow, current path, Area, Temperature, moisture.

Опубликовано:

25 июн 2020

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 36

@desireddysureshreddy1676 3 года назад

Good

@railwayengineeringinsights6463 3 года назад

Many thanks

@gopalduttsharma8641 4 года назад

Nice Initiative, Sharing Knowledge

@railwayengineeringinsights6463 4 года назад

Many thanks sir...

@nowshadk2315 4 года назад

👏👏👌👌

@Gsgsgs1906 4 года назад

Good video!!. Not only useful for electrical engineers but also for Non-technical people to understand the Electrical safety

@railwayengineeringinsights6463 4 года назад

Many thanks...

@mdharoon101 2 года назад

Great lecture. Your way of explaining is quite easy for attendee. Thank you

@railwayengineeringinsights6463 2 года назад

Thanks

@shrutishetty7058 4 года назад

Very easy to understand.. Thanks for sharing your knowledge and experience .. 👌👍

@railwayengineeringinsights6463 4 года назад

Many thanks...

@palakjain3080 4 года назад

Well-explained, simple and easy to understand.

@railwayengineeringinsights6463 4 года назад

Many thanks Dr. Palak... I have gone through your posts on LinkedIn.... They are amazing...

@upmameena5740 4 года назад

Sahil the way u explained it was super easy to understand... keep posting such videos...

@railwayengineeringinsights6463 4 года назад

Many thanks Upma...

@khaliqburhan6274 Год назад

Very useful information elegantly presented and easy to understand even for people from non electricidal background.

@railwayengineeringinsights6463 Год назад

Many thanks

@subodhmodak3772 4 года назад

easy illustration of basic knowledge

@dhanirammerawi3849 3 года назад

Very nice sir ji🙏🙏🏼🙏🏼

@vijenderjangra7763 4 года назад

Good work Sahil, especially helpful when you’ve been away from the core or been to the different sector for quite some years. Waiting your videos on SC and its monitoring.

@railwayengineeringinsights6463 4 года назад

Many thanks Vijender...

@sthakur051 4 года назад

Very nice sir ji🙏🙏🙏🙏

@railwayengineeringinsights6463 4 года назад

Many thanks...

@donberg01 2 года назад

Can you have a return path from the ground on the Moon, or Mars? It is a return path depending on soil resistivity, isn't it? Just a thought! (Instead of Earthing, you will be Mooning or Marsing!) Great lectures like always keep up the great work!

@railwayengineeringinsights6463 2 года назад

Thanks a lot. In case the source is on Moon/Mars and is feeding a load at the earth, then the return path will be the atmosphere as the current flows closed path. However, in this case, the current will be negligible, thus making it a high impedance fault. Current will do back to its source through the least resistance path, which could be less resistive soil in case it is available on its way back to the source.

@donberg01 2 года назад

@@railwayengineeringinsights6463 I guess it's the same theory, it's universal! Ground is a return path no matter what planet you are on!

@gauravkaushik04 4 года назад

Very useful. One feedback, your video assumes that the power supply is grounded. In Railway signalling, supplies are sometimes floating so grounding is not needed at the equipment side. Please check IT type power systems.

@railwayengineeringinsights6463 4 года назад

Many thanks... Very true... As it was the first video so prepared more generalised one... Will discuss separately in a video about different types of earthing system... TT, TN-S, TN-C, IT, TN-C-S as per IEC 60364 series...

@PRATEEK30111989 4 года назад

Nice lecture to begin earthing and bonding playlist. Is this concept related to how Faraday cage is designed?

@railwayengineeringinsights6463 4 года назад

Many thanks...not exactly...Faraday cage will a part of EMC series... Which is used to achieve immunity against radiated EM waves...

@PRATEEK30111989 4 года назад

@@railwayengineeringinsights6463 how did Tesla walk in an electrified steel cage? Was is a Faraday cage?

@railwayengineeringinsights6463 4 года назад

Faraday cage is a solid steel box/cage preferably without any penetrations. Steel having high permeability is able to absorb high freq fields. Thus, protecting the circuit inside from external EM disturbances. As steel has higher conductivity compared to human body, the electric current will flow through it. This principle was used by Sir Tesla...