1.1.1 Equipment covered by this standard This standard is applicable to mains-powered or battery-powered information technology equipment, including electrical business equipment and associated equipment, with a RATED VOLTAGE not exceeding 600 V. This standard is also applicable to such information technology equipment: designed for use as telecommunication terminal equipment and TELECOMMUNICATION NETWORK infrastructure equipment, regardless of the source of power; designed and intended to be connected directly to, or used as infrastructure equipment in, a CABLE DISTRIBUTION SYSTEM, regardless of the source of power; designed to use the AC MAINS SUPPLY as a communication transmission medium (see Clause 6, Note 4 and 7.1, Note 4). This part of IEC 60950 is also applicable to: components and subassemblies intended for incorporation in this equipment. Such components and subassemblies need not comply with every requirement of the standard, provided that the complete equipment, incorporating such components and subassemblies, does comply; external power supply units intended to supply other equipment within the scope of this part of IEC 60950; accessories intended to be used with equipment within the scope of this part of IEC 60950. NOTE 1 Examples of aspects with which uninstalled components, subassemblies and accessories may not comply include the marking of the power rating and access to hazardous parts. NOTE 2 This standard may be applied to the electronic parts of equipment even if that equipment does not wholly fall within its Scope, such as large-scale air conditioning systems, fire detection systems and fire extinguishing systems. Different requirements may be nece ssary for some applications. This standard specifies requirements intended to reduce risks of fire, electric shock or injury for the OPERATOR and layman who may come into contact with the equipment and, where specifically stated, for a SERVICE PERSON. This standard is intended to reduce such risks with respect to installed equipment, whether it consists of a system of interconnected units or independent units, subject to installing, operating and maintaining the equipment in the manner prescribed by the manufacturer. Examples of equipment that is in the scope of this standard are: Generic product type Specific example of generic type banking equipment monetary processing machines including automated teller (cash dispensing) machines (ATM) data and text processing machines and associated equipment data preparation equipment, data processing equipment, data storage equipment, personal computers, plotters, printers, scanners, text processing equipment, visual display units data network equipment bridges, data circuit terminating equipment, data terminal equipment, routers electrical and electronic retail equipment cash registers, point of sale terminals including associated electronic scales electrical and electronic office machines calculators, copying machines, dictation equipment, document shredding machines, duplicators, erasers, micrographic office equipment, motor-operated files, paper trimmers (punchers, cutting machines, separators), paper jogging machines, pencil sharpeners, staplers, typewriters other information technology equipment photoprinting equipment, public information terminals, multimedia equipment postage equipment mail processing machines, postage machines telecommunication network infrastructure equipment billing equipment, multiplexers, network powering equipment, network terminating equipment, radio basestations, repeaters, transmission equipment, telecommunication switching equipment telecommunication terminal equipment facsimile equipment, key telephone systems, modems, PABXs, pagers, telephone answering machines, telephone sets (wired and wireless) NOTE 3 The requirements of IEC 60065 may also be used to meet safety requirements for multimedia equipment. See IEC Guide 112, Guide on the safety of multimedia equipment. For television sets EN 60065 applies. This list is not intended to be comprehensive, and equipment that is not listed is not necessarily excluded from the Scope. Equipment complying with the relevant requirements in this standard is considered suitable for use with process control equipment, automatic test equipment and similar systems requiring information processing facilities. However, this standard does not include requirements for performance or functional characteristics of equipment. 1.1.2 Additional requirements Requirements additional to those specified in this standard may be necessary for: equipment intended for operation in special environments (for example, extremes of temperature; excessive dust, moisture or vibration; flammable gases; and corrosive or explosive atmospheres); electromedical applications with physical connections to the patient; equipment intended to be used in vehicles, on board ships or aircraft, in tropical countries, or at altitudes greater than 2 000 m; equipment intended for use where ingress of water is possible; for guidance on such requirements and on relevant testing, see Annex T. NOTE Attention is drawn to t he fact that authorities of some countries impose additional requirements. 1.1.3 Exclusions This standard does not apply to: power supply systems which are not an integral part of the equipment, such as motor-generator sets, battery backup systems and distribution transformers; building installation wiring; devices requiring no electric power.