If cracks develop and if used in an explosive dust environment (IEC/EU: Zone 21, and US/CA: Class II, Division 1), ingress of conductive dust may cause a short circuit that could ignite a dust explosive atmosphere surrounding the unit, potentially resulting in serious injury or death.
Preparing safety standards for devices and systems used by billions of people and the need to merge the activities of two separate IEC TCs that covered, respectively, data processing equipment and office machines, and electronic equipment for household and similar use, led to the creation of IEC TC 108 in 2001.
“For many years AV and ITE products have been introduced in the market place at an ever quicker pace and technologies used to produce them have been converging. IEC TC (Technical Committee) 108: Safety of electronic equipment within the field of audio/video, information technology and communication technology, which prepares the separate IEC 60065 and IEC 60950-1 series of safety standards for AV and IT equipment, felt necessary to create a “hazard-based” standard, which would cover both. This led to the development of a new International Standard, IEC 62368-1, Audio/video, information and communication technology equipment – Part 1: Safety requirements, published in January 2010. This standard has gained wide acceptance in many markets where national versions have been published.”
“Several national standards around the world have been published based on Edition No. 1 of IEC 62368-1, and it is expected that it will be more widely adopted by other countries and regions when Edition 2 is published later in 2013.”