audio video and similar electronic apparatus safety requirements 170 pages in english 1.1.1 this international safety standard applies to electronic apparatus designed to be fed from the mains from a supply apparatus from batteries or from remote power feeding and intended for reception generation recording or reproduction respectively of audio video and associated signals. it also applies to apparatus designed to be used exclusively in combination with the above-mentioned apparatus. this standard primarily concerns apparatus intended for household and similar general use but which may also be used in places assembly such as schools theatres places of worshi and the workplace. professional apparatus intended for use as described above is also covered unless falling specifically within the scope of other standards. this standard concerns only safety aspects of the above apparatus it does not concern other matters such as style or performance. this standard applies to the above mentioned apparatus if designed to be connected to the telecommunication network or similar network for example by means of an integrated modem. some examples of apparatus within the scope of this standard are -receiving apparatus and amplifiers for sound and or vision -independent load transducers and source transducers -supply apparatus intended to supply other apparatus covered by the scope of this standard -electronic musical instruments and electronic accessories such as rhythm generators tone generators music tuners and the like for use with electronic or non-electronic musical instruments -audio and or video educational apparatus -video projectors note 1 film projectors slide projectors overhead projectors are covered by iec 60335-2-56 51 -video cameras and video monitors -video games and flipper games note 2 video and flipper games for commercial use are covered by iec 60335-2-82 6 -juke boxes -electronic gaming and scoring machines note 3 electronic gaming and scoring machines for commercial use are covered by iec 60335-2-82 6 -teletext equipment -record and optical disc players -tape and optical disc recorders -antenna signal converters and amplifiers -antenna positioners -citizens band apparatus -apparatus for imagery -electronic light effect apparatus -apparatus for use in alarm systems -intercommunication apparatus using low voltage mains as the transmission medium -cable bead-end receivers -multimedia apparatus note 4 the requirements of iec 60950 may also be used to meet the requirements for safety of multi media apparatus see also iec guide 112 16 -professional general use amplifiers record or disc players tape players recorders and public address systems -professional sound video systems -electronic flash apparatus for photographic purposes see annex l 1.1.2 this standard applies to apparatus with a rated supply voltage not exceeding - 250v a.c. single phase or d.c. supply - 433v a.c. in the case of apparatus for connection to a supply other than sing phase 1.1.3 this standard applies to apparatus for use at altitudes not exceeding 2 000m above sea level primarily in dry locations and in regions with moderate or tropical climates. for apparatus to be connected to telecommunication networks additional requirements are given in annex b for apparatus intended to be used in vehicles ships or aircraft or at altitudes exceeding 2000m above sea level additional requirements may ne necessary note see table a.2 of iec 60664-1 requirements additional to those specified in this standard may be necessary for apparatus intended for special conditions of use. 1.1.4 for apparatus designed to be fed from the main this standard applies to apparatus intended to be connected to a mains supply with transient overvoltages not exceeding overvoltage category ii according to iec 60664-1. for apparatus subject to transient overvoltages exceeding those for overvoltage category ii additional protection may be necessary in the mains supply of the apparatus.