DANSK DSF/PREN IEC 60721-3-6 PDF

This part of IEC 60721 classifies the groups of environmental parameters and their severities to which a product is subjected when installed aboard a ship. Ships where electrotechnical products may be permanently or temporarily installed include : • Ships propelled by mechanical means, including mobile offshore units; • Ships not propelled by mechanical means, including sailing boats and life rafts. The classes defined apply to all sizes of ship from pleasure craft to trawlers, ferry boats, icebreakers, cargo ships including tankers. The areas in which ships normally navigate are: • inland waterways (canals, rivers, lakes etc.); • coastal waters: • oceans. Areas where ships have to navigate in ice are also included.