rotection against electric shocks
rotective measures;Safety;Safety engineering;Safety measures;Specification (approval);Strength of materials【摘要】: This standard applies to two up to five wire installation couplers including earth, if provided,with a rated voltage up to and including 500 V a.c. and a rated connecting capacity up to andincluding 10 mm2 for permanent connection in indoor electrical installations. Installationcouplers with additional contacts for voltages other than mains voltages are outside the scopeof this standard.NOTE 1 Installation couplers according to this standard are used e.g. in prefabricated buildings, installationcavities, such as suspended floors and ceilings, or cable tray systems, cable ladder systems, cable ductingsystems and cable trunking systems or in commercial show rooms, in partition walls and in any similar applicationor in furniture complying with IEC 60364-7-713.NOTE 2 This standard may be used as a guide for installation couplers with additional contacts for voltages otherthan mains voltages.NOTE 3 In the UK, where installation couplers have more than 5 wires, they shall meet the requirements ofIEC 61535 as though they were included in the scope and shall be tested in such a way that all of the mainsvoltage pins are subjected to the same level of testing.NOTE 4 In the USA, these installation couplers are not permitted to be used where they will not be visible afterinstallation.An installation coupler consists of an installation female connector and an installation maleconnector for permanent connection not intended to be engaged or disengaged under loadnor to be engaged or disengaged other than during first installation or during reconfigurationor maintenance of the wiring system in which installation couplers have been installed. Thismeans that installation couplers are only intended for infrequent use.Installation couplers are not suitable for use in place of socket-outlet systems. Installationcouplers are not suitable for use in place of devices for connecting luminaires (DCLs)according to IEC 61995 or luminaire supporting couplers (LSCs).NOTE 5 For lower limits of in-service temperatures the necessary information is given in the manufacturer’sinstallation instructions.In locations where special conditions prevail, as in ships, vehicles and the like and inhazardous locations, for example where explosions are liable to occur, special constructionsmay be required.NOTE 6 Particular requirements for installation couplers e.g. for. use at higher ambient temperatures, with highermechanical durability (e.g. metal housings), with higher fire resistance and for use in control circuits (e.g. SELV),are under consideration.NOTE 7 National rules may have requirements concerning the accessibility of installation couplers.NOTE 8 Installation couplers are intended to be installed by instructed or skilled persons.NOTE 9 National rules may specify who is allowed to carry out the connection and disconnection of installationcouplers.【中国标准分类号】: L24【国际标准分类号】: 29_120_20;29_120_30;29_120_99【页数】: 52P.;A4【正文语种】: 英语 | 欢迎光临 世界资料网论坛 (http://bbs.infoeach.com/) | Powered by Discuz! X2.5 |