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.
|Published (Last):||8 August 2008|
|PDF File Size:||3.59 Mb|
|ePub File Size:||6.26 Mb|
|Price:||Free* [*Free Regsitration Required]|
When a current exceeding 30 ifc 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. This page has been accessed 21, times. The following test report forms are related: Ventricular fibrillation unlikely to happen C 2 curve: If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file.
Contact with parts in fault conditions Indirect contact. Do you need a multi-user copy?
MV and LV architecture selection guide for buildings. Protection against electric shocks and electrical fires. Its passage affects essentially the muscular, circulatory and respiratory functions and 60749 results in serious burns.
Basic protection Fault protection.
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.
Relevant IEC standards include: Sizing and protection of conductors.
Chapter – Protection against electric shocks and electric fires. The necessary criterion is the admissible limit of touch voltage i. You may select the license of your choice. 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.
Personal tools Create account Log in. I, the copyright holder of this work, hereby publish it under the following licenses:. This page was last edited on 14 Octoberat Electrical fires are caused by overloads, short circuits and earth leakage currents, but also by electric arcs in cables and connections. We accept all major credit cards American Express, Mastercard and VisaPayPal and bank transfers as form of payment.
This page was last modified on 23 Aprilat Retrieved from ” http: Standards and regulations distinguish two kinds of dangerous contact: 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. Views View Edit History. Retrieved from ” https: 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.
TC 64 – Electrical installations and protection against electric shock rss.
File:IEC TS 60479-1 electric shock graph.svg
The values of body impedance depend on a number of factors ief, 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.
Residential premises and other special locations. Preview Abstract IEC Views Page Talk View source History. From Wikimedia Commons, the free media repository.
Main page How to browse and search Random page. 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: Contents 1 – Introduction 1. The following other wikis use this file: Our prices are in Swiss francs CHF. Possibility of irreversible effects AC zone: This refers to a person coming into contact with a conductor which is live in normal circumstances see Fig.
Hazardous-live-parts shall not be accessible, and accessible conductive parts shall not be hazardous. The following page uses this file: Connection to the MV utility distribution network. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
File:IEC TS electric shock – Wikimedia Commons
The relationship between ice 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 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 contents of the corrigenda of October and June have been included in this copy.
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.