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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Protection against electric shock – Electrical Installation Guide
Hazardous-live-parts shall not be accessible, and accessible conductive parts shall not be hazardous. It has the status of a horizontal standard in accordance with IEC Guide Personal tools Create account Log in. Its passage affects ieec the muscular, circulatory and respiratory functions and sometimes results in serious burns.
Retrieved from ” https: The contents of the corrigenda of October and June have been included in this copy. 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. Chapter – Protection against electric shocks and electric fires. Possibility of irreversible effects AC zone: 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.
File:IEC TS 60479-1 electric shock graph.svg
Characteristics of particular sources and loads. MV and LV architecture selection guide for buildings. Preview Abstract IEC This refers to a person coming into contact with a conductor which is live in normal circumstances see Fig.
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. Do you need a multi-user copy? An electric shock is the pathophysiological effect of an electric current through the human body.
Ventricular fibrillation unlikely to happen C 2 curve: Contents 1 – Introduction 1.
The impedance values indicated in this technical specification result from a close examination of the experimental results available from measurements carried out principally on corpses and on some living persons. 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. We accept all major credit cards American Express, Mastercard and VisaPayPal and bank transfers as form of payment. Views Page Talk View source History. Relevant IEC standards include: The necessary criterion is the admissible limit of touch voltage i. Protection measures are described in Protection against electrical fire risks. Contact with live part Direct contact. 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: 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 timestamp is only as accurate as the clock in the camera, and it kec be completely wrong. Main page How to browse and search Random page.
Residential premises and other special locations. Sizing and protection of conductors. The values oec 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.
You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may select the license of your choice. Electrical fires are caused by overloads, short circuits and earth leakage currents, but also by iev arcs in cables and connections.
Protection against electric shocks and electrical fires.
Threshold of muscular reactions C 1 curve: This page was last edited on 14 Octoberat This refers to a person coming into contact with an exposed ieec which is not normally live, but has become live accidentally due to insulation failure or some other cause. Our prices are in Swiss francs CHF. The different parts of the humanbody such as the skin, blood, muscles, other tissues isc joints present to the electric current a certain impedance composed of resistive and capacitive components.
The following other wikis use this file: Basic protection Fault protection. The following page uses this file: 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. Connection to the LV utility distribution network. Threshold of perception of current B curve: Connection to the MV utility distribution network.
TC 64 – Electrical installations and protection against electric shock rss. Standards and regulations distinguish two kinds of dangerous contact: