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.
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Views Page Talk View source History. 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 604799 in a very short time.
This page has been accessed 21, times. An electric shock is the pathophysiological effect of an electric current through the human body.
The relationship between current and voltage is not linear because the impedance of the human body 604799 with the touch voltage, and data on this relationship is therefore required. Retrieved from ” http: 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 of the skin, surface area of contact, pressure exerted and temperature.
The following iex report forms are related: Protection measures are described in Protection against electrical fire risks. Its passage affects essentially the muscular, circulatory and respiratory functions and sometimes results in serious burns. Possibility of irreversible effects AC zone: Preview Abstract IEC Protection against electric shocks and electrical fires.
Main page How to browse and search Lec page. Sizing and protection of conductors.
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. Contents 1 – Introduction 1. MV and LV architecture selection guide for buildings. 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.
Energy Efficiency in electrical distribution.
We accept all major credit cards American Express, Mastercard and VisaPayPal and bank transfers as form of payment. Ventricular fibrillation unlikely to happen C 2 curve: Residential premises and other special locations. Standards and regulations distinguish two kinds of dangerous contact: Characteristics of particular sources and loads.
Contact with parts in fault conditions Indirect contact. The necessary criterion is the admissible limit of touch voltage i. Electrical fires are caused by overloads, short circuits and earth leakage currents, but also by electric arcs in cables and connections.
It has the status of a horizontal standard in accordance with IEC Guide 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.
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From Electrical Installation Guide. Contact with live part Direct contact.
The protection of persons against electric shock in LV installations must be provided in conformity with appropriate national ifc, 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. This page was last modified on 23 Aprilat This refers to a person coming into contact with a conductor which is live in normal circumstances see Fig. Chapter – Protection against electric shocks and electric fires. How to contribute Play with sandbox Recent changes Help.