IEC TS Effects of current on human beings and livestock -. Part 1: General aspects. • IEC TS Effects of current on. Protection measures are described in sections 1 to 8. IEC publication updated in defines four zones of current-magnitude. Comply with a (yet to be developed) authoritative NZ specific set of Power Coordination hazard voltage limits, calculated from IEC on a similar.
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Hazardous-live-parts shall not be accessible, and accessible conductive parts shall not be hazardous. Its passage affects essentially the muscular, circulatory and respiratory functions and sometimes results in serious burns.
File:IEC TS 60479-1 electric shock graph.svg
Threshold of perception of current B curve: This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. How to contribute Play with sandbox Recent changes Help.
From Electrical Installation Guide. We accept all major credit cards American Express, Mastercard and VisaPayPal and bank transfers as form of payment. The fault current raises the exposed-conductive-part to a voltage liable to be hazardous as it generates lec touch current through a person coming into contact with this exposed-conductive-part see Fig. Ventricular fibrillation unlikely to happen C 2 curve: This refers to a person coming into contact with an exposed conductive-part which is not normally live, but has 6047 live accidentally due to insulation failure or some other cause.
Relevant IEC standards include: Do you need a multi-user copy?
The following page uses this file: Characteristics of particular sources and loads. Basic protection Fault protection.
From Wikimedia Commons, the free media repository. This page was last edited on 14 Octoberat Chapter – Protection against electric shocks and electric fires.
Retrieved from ” http: The different parts of the humanbody such 6479 the skin, blood, muscles, other tissues and joints present to the electric current a certain impedance composed of 604779 and capacitive components. Standards and regulations distinguish two kinds of dangerous contact: 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.
You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. The protection of persons against electric shock in LV installations must be provided in conformity with appropriate national standards, statutory regulations, codes of practice, official guides and circulars etc.
The relationship between current and voltage is not linear because the impedance of the human body varies with the touch voltage, and data on this relationship is therefore required. The following other wikis use this file: Log-log graph of the effect of alternating current I of duration T passing from left hand to feet as defined in IEC publicationredrawn by CMG Lee based on http: Retrieved from ” https: You may select the license of your choice.
File:IEC TS electric shock – Wikimedia Commons
Our prices are in Swiss francs CHF. Personal tools Create 06479 Log in. The values of body impedance depend on a number of factors and, in particular, on current path, on touch voltage, duration of current flow, frequency, degree of moisture of the skin, surface area of contact, pressure exerted and temperature.
Views View Edit History. This page was last modified on 23 Aprilat TC 64 – Electrical installations and protection against electric shock rss. Views Page Talk View source History.
I, the copyright holder of this work, hereby publish it under the following licenses:. Contact with parts in fault conditions Indirect contact.
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The following test report forms are related: Protection against electric shocks and electrical fires. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. Electrical fires are caused by overloads, short circuits and earth leakage currents, but also by electric arcs in cables and connections. Possibility of irreversible effects AC zone: