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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Safety of current with duration – Electrical Engineering Stack Exchange
You may experience issues viewing this site in Internet Explorer 9, 10 or For impulse durations greater than 10 ms, the values given in Figure 20 of IEC apply. Connection to the MV utility distribution network. When a current exceeding 30 mA passes near the heart of a human body, the person concerned is in serious danger if the current is not interrupted in a very short time. An electric shock is the pathophysiological effect of an electric current through the human body.
Touch voltage threshold values for physiological effects PD Yes I’ve read that, but is it less likely to do so if it occurs for an extremely small time period? This refers to a person coming into contact with an exposed conductive-part which is not normally live, but has become live accidentally due to insulation failure or some other cause.
Protection against electric shocks and electrical fires. Like is there a reasonably consistent relationship between current duration through the body and relative danger? This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
Electrical fires are caused by overloads, short circuits and earth leakage currents, but also by lec arcs in cables and connections. The degree of danger for the victim is a function of the magnitude of the current, the parts of the body through which the current passes, and the duration of current flow.
Please download Chrome or Firefox or view our browser tips. This 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.
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I will dig into it. They also specify on which current level a circuit breaker for leakage to ground RCD, residual current protective device shall trip: This third edition cancels and replaces the second edition, published inand constitutes a technical revision.
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IEC/TS 60479-2:2007 et
I edit the answer and include also the figure 22 for dc. 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.
Possibility of irreversible effects AC zone: This means that you estimate touch voltage for a conductive part enclosure, cable shield, pipe, etc. The faster, 6479-2 way to work with 600479-2. This refers to a person coming into contact with a conductor which is live in normal circumstances see Fig.
My question is about how dangerous a momentary amount of current is vs the duration. Standards and regulations distinguish two kinds of dangerous contact: This question already has an answer here: An example of differences between parameters used for calculations is the assumed resistance for the victim: Hazardous-live-parts shall not be accessible, and accessible conductive parts shall not be 60479–2.
PD IEC/TS 60479-2:2017
Its passage affects essentially the muscular, circulatory and respiratory functions and sometimes results in serious burns. Main page How to browse and search Random page. Click to learn more. Do you need a multi-user copy? Our prices are in Swiss francs CHF.
IEC/TS et – Estonian Centre for Standardisation
If those answers do not fully address your question, please ask a new question. Personal tools Create account Log in. For short pulses the standard indicates the energy as the main factor to determine if fibrillation may occur. Retrieved ice ” http: This standard only considers conducted current resulting from the direct application of a source of current to the body, as does IEC and IEC I iwc it in my last comment down below. Would you be able to speculate that a high current on an even shorter time scale would shock but wouldn’t cause fibrillation because it would occur for a shorter amount of time than the time it takes for nerve impulses to travel through the body?
Did you do any basic web research on electric shock? Your basket is empty. Except special cases with such a specific application that needs starting back from the fundamentals i.
This is what distinguishes applications: Worldwide Standards We can source any standard from anywhere in the world. Safety, Electric shocks, Time, Livestock, Heart, Human body, Electric current, Electrical safety, Direct current, 06479-2 resistance, Electrical measurement, Alternating current, Skin bodyElectrical impedance, Test equipment, Testing conditions, Iwc effects human body.