60621-1-1987 Installations électriques pour chantiers extérieurs soumis à des conditions sévères (y compris mines à ciel ouvert et carrières). Première partie: Domaine d?application et définitions (Edition 2.0)
Electrical installations for outdoor sites under heavy conditions (including open-cast mines and quarries). Part 1: Scope and definitions (Edition 2.0)
Installations électriques pour chantiers extérieurs soumis à des conditions sévères (y compris mines à ciel ouvert et carrières). Première partie: Domaine d?application et définitions (Edition 2.0) 是非强制性国家标准，您可以免费下载前三页
This standard (including other parts of IEC Publication 621) applies to the installation and operation of electrical apparatus and systems associated with outdoor sites under heavy conditions@ including open-cast mines@ quarries@ stockpiles and the like. It applies particularly to electrical apparatus and systems used for the following: ?a) winning@ stacking and primary processing machinery ;?b) secondary processing machinery ;?c) transport conveying systems ;?d) pumping and water supply systems ;?e) movable railway systems ;?f) fixed railway systems (operations only) ;?g) haulage trucks ;?h) power generating and distribution equipment ;?i) control@ signal@ supervisory and communication systems ;?j) ancillaries. The standard does not cover temporary and provisional places of work in the open@ such as building sites and earth-moving sites@ unless the equipment used is similar to that used in surface mining applications.ObjectThe object of this standard is to set out guiding principles for the installation and operation of electrical equipment so as to ensure the safety of persons@ livestock and property@ and the proper functioning of the plant.