IEC 60479 1 PDF
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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Relevant IEC standards include: The necessary criterion is the admissible limit of touch voltage i.
Personal tools Create account Log in. 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 604779.
The fault current raises the exposed-conductive-part to a voltage liable to be hazardous as it generates a touch current 11 a person coming into 604799 with this exposed-conductive-part see Fig. Sizing and protection of conductors. It has the status of a horizontal standard in accordance with IEC Guide This page was last modified on 23 Aprilat Threshold of muscular reactions C 1 curve: 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.
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 iex flow. 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 6079 human body.
File:IEC TS electric shock – Wikimedia Commons
Contact with parts in fault conditions Indirect contact. Contents 1 – Isc 1.
File:IEC TS 60479-1 electric shock graph.svg
Retrieved from ” http: From Electrical Installation Guide. Protection against electric shocks and electrical fires.
MV 604479 LV architecture selection guide for buildings. Main page How to browse and search Random page. Characteristics of particular sources and loads.
The following page uses this file: Possibility of irreversible effects AC zone: Electrical fires are caused by overloads, short 604479 and earth leakage currents, but also by electric arcs in cables and connections.
The different parts of the humanbody such as the skin, blood, muscles, other tissues and joints present to the electric current a certain impedance composed of resistive and capacitive components. 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. From Wikimedia Commons, the free media repository. 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.
Protection against electric shock – Electrical Installation Guide
Protection measures are described in Protection against electrical fire risks. Lec fibrillation unlikely to happen C 2 curve: Log-log graph of the effect of alternating current I of duration T passing from 11 hand to feet as defined in IEC publicationredrawn by CMG Lee based on http: Energy Efficiency in electrical distribution.
Hazardous-live-parts shall not be accessible, and accessible conductive parts shall not be hazardous. Do you need a multi-user copy?
Connection to the MV utility distribution 6079. You may select the license of your choice. This refers to a person coming into contact with a conductor which is live in normal circumstances see Fig. TC 64 – Electrical installations and protection against electric shock rss. Standards and regulations distinguish two kinds of dangerous contact: