IEC publication updated in defines four zones of current- magnitude /time-duration, in each of which the pathophysiological. IEC TS Effects of current on human beings and livestock -. Part 1: General aspects. • IEC TS Effects of current on. IEC/TR Edition TECHNICAL. REPORT. RAPPORT. TECHNIQUE. Effects of current on human beings and livestock –. Part 5: Touch.
|Published (Last):||27 May 2005|
|PDF File Size:||17.26 Mb|
|ePub File Size:||1.93 Mb|
|Price:||Free* [*Free Regsitration Required]|
This refers to a person coming into contact with a conductor which is live in normal circumstances see Fig. Views Page Talk View source History. 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.
Hazardous-live-parts shall not be accessible, and accessible conductive parts shall not be hazardous. This page was last modified on 23 Aprilat Chapter – Protection against electric shocks and electric fires. The contents of the corrigenda of October and June have been included in this copy.
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 lec required. TC 64 – Electrical 604779 and protection against electric shock rss.
IEC | IEC Webstore
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. We accept all major credit cards American Express, Mastercard and VisaPayPal and bank transfers as form of payment. Characteristics of particular sources and loads. The following test report forms are related: Retrieved from ief http: Connection to the LV utility distribution network.
Main page How to browse and search Random page. Sizing and protection of conductors. An electric shock is the pathophysiological effect of an electric current through the human body. Protection measures are described in Protection 6079 electrical fire risks.
Protection against electric shock – Electrical Installation Guide
Preview Abstract IEC Possibility of irreversible effects AC zone: Personal tools Create account Log in. 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.
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.
Contents 1 – Introduction 1. From Electrical Installation Guide. Standards and regulations distinguish two kinds of dangerous contact: Electrical fires are caused by overloads, short circuits and earth leakage currents, but also by electric arcs in cables and connections.
Threshold of perception of current B curve: Basic protection Ifc protection. 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 ied see Fig.
Contact with parts in fault conditions Indirect contact. Connection to the MV utility distribution network. Residential premises and other special locations.
Energy Efficiency in electrical distribution. Relevant IEC standards include: 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 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 60749 of current flow. The necessary criterion is the admissible limit of touch voltage i. Protection against electric shocks and electrical fires. Contact with live part Direct contact. It has the status of a horizontal standard in accordance with IEC Guide MV and LV architecture selection guide for buildings.
The impedance values indicated in this technical specification result from a close examination of the experimental results available from measurements carried out principally iiec corpses and on some living persons. Our prices are in Swiss francs CHF.
Threshold of muscular reactions C 1 curve: