Fundamental rule of protection: Difference between revisions

Latest revision as of 20:00, 10 April 2018

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-The fundamental rule of protection against electric shock is provided by the document IEC 61140 which covers both electrical installations and electrical equipment.<br>Hazardous-live-parts shall not be accessible and accessible conductive parts shall not be hazardous.<br>This requirement needs to apply under:
-*Normal conditions, and
-*Under a single fault condition
-Various measures are adopted to protect against this hazard, and include:
-*Automatic disconnection of the power supply to the connected electrical equipment
-*Special arrangements such as:
-&nbsp; -&nbsp;The use of class II insulation materials, or an equivalent level of insulation<br>&nbsp; - &nbsp;Non-conducting location, out of arm’s reach or interposition of barriers<br>&nbsp; - &nbsp;Equipotential bonding<br>&nbsp; -&nbsp; Electrical separation by means of isolating transformers