IEC TS Edition TECHNICAL. SPECIFICATION. Effects of current on human beings and livestock –. Part 2: Special aspects. IEC TR Standard | LVDC | Effects of current passing through the human body. Part 2: Special aspects – Chapter 4: Effects of. Related publications. IEC · IEC TS · IEC TR Share this page. mail · Twitter · Facebook · Google+.
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Ventricular fibrillation has been determined to occur following the curves below. How to contribute Play with sandbox Recent changes Help. Contact with live part Direct contact.
IEC For short pulses the standard indicates the energy as the main factor to determine if fibrillation may occur. MV and LV architecture selection guide for buildings. The major changes with regard to the previous edition are as follows: Worldwide Standards We can source any standard from anywhere in the world.
Would you be able to speculate that a high current on an even shorter time scale would shock but wouldn’t cause fibrillation because iex would occur for a shorter amount of time than the time it takes for nerve impulses to travel through the body?
IEC/TS 60479-2:2007 et
Of course and it is disciplined by different standards in different countries. TC 64 – Electrical installations and protection against electric shock rss.
Standards and regulations distinguish two kinds of dangerous contact: Is 20 watts of electricity dangerous? Search all products by. Except special cases with such a specific 600479-2 that needs starting back from the fundamentals i. This means that you estimate touch voltage for a conductive part enclosure, 60497-2 shield, pipe, etc.
You may find similar items within these categories by selecting from the choices below:. An example of differences between parameters used for calculations is the assumed resistance for the victim: This question has been asked lec and already has an answer.
From Electrical Installation Guide. I will dig into it. 6049-2 standard furthermore describes the effects of current passing through the human body in the form of single unidirectional rectangular impulses, sinusoidal impulses and impulses resulting from capacitor discharges. Yes I’ve read that, but is it less likely to do so if it occurs for an extremely small time period? In reality, a short pulse has a high frequency content, so at a first approx the expected behavior is similar. Accept and continue Learn more about the cookies we use and how to change your settings.
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This refers to a person coming into contact with a conductor which is live in normal circumstances see Fig. For impulse durations greater than 10 ms, the values given in Figure 20 of IEC apply. The effects of current passing through the 6079-2 body for – alternating sinusoidal current with d.
Of less interest if considering typical waveforms of supply distribution and equipment, but covering waveforms purposely generated, capacitor discharge, arc phenomena.
Relevant IEC standards include: The fault current raises the exposed-conductive-part to a voltage liable to be hazardous as it generates a touch current through a person coming into contact with this exposed-conductive-part see Fig. Actually I was specifically interested in short duration D. I am used to IEC standards, so IEC is the reference for current-duration limits, distinguishing between perceivable intensity, peripheral muscular effects, more serious effects, e.
Like is there a reasonably consistent relationship between current duration through the body and relative danger?
The values specified are deemed to be applicable 6047-2 impulse durations from 0,1 ms up to and including 10 ms.
PD IEC/TS 60479-2:2017
Sizing and protection of conductors. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox uec. Please download Chrome or Firefox or view our browser tips.