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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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. This standard only considers conducted current resulting from the direct application of a source of current to the body, as does IEC and IEC Actually I was specifically interested in short duration D.
This refers to a person coming into contact with a conductor which is live in normal circumstances see Fig. I read an article about research into a possible electric weapon that would shock someone on the scale of nanoseconds to stun them without risking killing them.
Ventricular fibrillation unlikely to happen C 2 curve: To simplify, if limits only are considered, we may have different voltage-time curves, where lower voltages are tolerated for longer times.
The fundamental rule of protection against electric shock is provided by the document IEC “Protection against electric shock — Common aspects for installations and equipment” which covers both electrical installations and electrical equipment. Relevant IEC standards include: From Electrical Installation Guide.
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Learn more about the cookies we use and irc to change your settings. Click to learn more. The following test report forms are related: This means that you estimate touch voltage for a conductive part enclosure, cable shield, pipe, etc.
This page was last modified on 23 Aprilat This question has been isc before and already has an answer. They also specify on which current level a circuit breaker for leakage to ground RCD, residual current protective device shall trip: Protection measures are described in Protection against electrical fire risks. Safety, Electric shocks, Time, Iev, Heart, Human body, Electric current, Electrical safety, Direct current, Electrical resistance, Electrical measurement, Alternating current, Skin bodyElectrical impedance, Test equipment, Testing conditions, Physiological effects human body.
Of less interest if considering typical waveforms of supply distribution and equipment, but covering waveforms purposely generated, capacitor discharge, arc phenomena. Contact with parts in fault conditions Isc contact. We accept all major credit cards American Express, Mastercard and VisaPayPal and bank transfers as form of payment.
Contents 1 – Introduction 1. This page has been accessed 21, times. This is what distinguishes applications: My question is about how dangerous a momentary amount of current is vs 60479- duration.
See IEC Figure 20 and 22 below for ac and dc systems, respectively, and Table 11 and 13, again for ac and dc, for interpretation. This has been addressed many times on this site already. Main page How to browse and search Random page. Yes I’ve read that, but is it less 604792- to do so if it occurs for an extremely small time period? It does not consider current induced within the body caused by its exposure to an external electromagnetic field.
MV and LV architecture selection guide for buildings.
PD IEC/TS 60479-2:2017
If those answers do not fully address your question, please ask a new question. Personal tools Create account Log in. The major changes with regard to the previous edition are as follows: Take the smart route to manage medical device compliance. Please download Chrome or Firefox or view our browser tips. In reality, a short pulse has a high frequency content, so at a first approx the expected behavior is similar.
Touch voltage threshold values for physiological effects PD The effects of current passing through the human body for – alternating sinusoidal current with d.
Safety of current with duration [duplicate] Ask Question. 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. You may experience issues viewing this site in Internet Explorer 9, 10 or 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.
Of course and it is disciplined by different standards in different countries.
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Ventricular fibrillation has been determined to occur following the curves below. I have 660479-2 other info on short pulses effect. Characteristics of particular sources and loads.
TC 64 – Electrical installations and protection against electric shock rss. Search all products by. Chapter – Protection against electric shocks and electric fires. Threshold of muscular reactions C 1 curve: For short pulses the standard indicates the energy as the main factor to determine if fibrillation may occur. The values specified are deemed to be applicable for impulse durations from 0,1 ms up to and including 10 ms.