![]() High voltage is any rated voltage exceeding 1 000 V a.c. For the purposes of this standard, low-voltage is any rated voltage up to and including 1 000 V a.c. Some clauses in this standard refer to low-voltage and high-voltage systems, installations and equipment. The intent is to give fundamental principles and requirements which are common to electrical installations, systems and equipment or necessary for their coordination, without limitations with regard to the magnitude of the voltage or current, or the type of current, and for frequencies up to 1 000 Hz. This International Standard applies to the protection of persons and livestock against electric shock. According to IEC Guide 1 04, technical committees, when preparing, amending, or revising their publications, are required to make use of any basic safety publication such as IEC 61 1 40. It is not intended to be used as a stand-alone standard. This International Standard is a basic safety publication primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 1 04 and ISO/IEC Guide 51. This standard also specifies the requirements for additional protection in specific situations.IEC 61140 pdf download.Protection against electric shock – Common aspects for installations and equipment In addition, the application and combination of the above requirements are also specified according to external influence conditions. This standard specifies the basic requirements for protection against electric shock, including basic protection (direct contact protection) and failure protection (indirect contact protection) for humans and livestock. ![]() ![]() State Administration for Market Regulation, National Standardization Administration National Standardization Technical Committee of Building Electrical Installations (SAC/TC 205) National Standardization Technical Committee of Building Electrical Installations Older Standard (superseded by this standard) Low-voltage electrical installations - Part 4-41: Protection for safety. ![]()
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