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 timestamp is only as accurate as the clock in the camera, and it may be completely wrong. Characteristics of particular sources and loads. iev
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File:IEC TS electric shock – Wikimedia Commons
Personal tools Create account Log in. Views View Edit History. It has the status of a horizontal standard in accordance with IEC Guide Threshold of perception of current B curve: Retrieved from ” http: Do you need a multi-user copy?
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.
This page has been accessed 21, times. Its passage affects essentially 604479 muscular, circulatory and respiratory functions and sometimes results in serious burns. Sizing and protection of conductors.
Electrical fires are caused by overloads, short circuits and earth leakage currents, but also by electric arcs in cables and connections. Chapter – Protection against electric shocks and electric fires. 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.
You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Contents 1 – Introduction 1. Hazardous-live-parts shall not be accessible, and accessible conductive parts shall not be hazardous.
If the file has been modified from its original state, some details such as the timestamp may not fully reflect 64079 of iwc original file. The following page uses this file: From Electrical Installation Guide. Contact with live part Direct contact. You may select the license of your choice.
From Wikimedia Commons, the free media repository. MV and LV architecture selection guide for buildings. 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.
Our prices are in Swiss francs CHF. Possibility of irreversible effects AC zone: 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.
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.
Relevant IEC standards include: 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. Protection against electric shocks and electrical fires.
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. Basic protection Fault protection. 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 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 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. The following test report forms are related: Threshold of muscular reactions C 1 curve: Contact with parts in fault conditions Indirect contact.
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Preview Abstract IEC This page was last edited on 14 Octoberat This page was last modified on 23 Aprilat The necessary criterion is the admissible limit of touch voltage i.
The contents of the corrigenda of October and June have been included in this copy. Connection to the MV utility distribution network. 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 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.