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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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. Our prices are in Swiss francs CHF. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those ief the original file.
The following other wikis use this file: This refers to a person coming into contact with a conductor which is live in normal circumstances see Fig. 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. Contents 1 – Introduction 1.
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 6047 the skin, surface area of contact, pressure exerted and temperature.
Contact with parts in fault conditions Indirect contact. The following test report forms are related: 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. 60497 may select the license of your 660479. Connection to the MV utility distribution network.
From Wikimedia Commons, the free media repository. Protection against electric shocks and electrical fires. Basic protection Fault protection. We accept all major credit cards American Express, Mastercard and VisaPayPal and bank transfers as form of payment.
This file contains additional information such as Exif metadata which may have been added 604779 the digital camera, scanner, or software program used to create or digitize it. The contents of the corrigenda of October and June have been included in this copy. 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.
Standards and regulations distinguish two 6479 of dangerous contact: 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. Threshold of muscular reactions C 1 curve: This page has been accessed 21, times. Do you need 06479 multi-user copy? Possibility of irreversible effects AC zone: 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.
File:IEC TS 60479-1 electric shock graph.svg
The necessary criterion is the admissible limit of touch voltage i. 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. 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 ic exposed-conductive-part see Fig.
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 iiec http: Characteristics of particular sources and loads. This refers to a person coming into contact with an kec conductive-part which is not normally live, but has become live accidentally due to insulation failure or some other cause.
Energy Efficiency in electrical distribution. Sizing and protection of conductors.
Protection against electric shock – Electrical Installation Guide
MV and LV architecture selection guide for buildings. How to contribute Play with sandbox Recent changes Help. Contact with live part Direct contact. This page was last edited on 14 Octoberat