Historical
DS/HD 60364-5-534:2016
Low-voltage electrical installations - Part 5-53: Selection and erection of electrical equipment - Isolation, switching and control - Clause 534: Devices for protection against transient overvoltages
IEC 60364-5-53 deals with general requirements for isolation, switching and control and with the requirements for selection and erection of the devices provided to fulfil such functions.*Clause 534 contains provisions for the application of voltage limitation in order to obtain insulation coordination in the cases described in HD 60364-4-44, EN 60664-1, EN 62305-1, EN 62305-4 and CLC/TS 61643-12.*Clause 534 focuses mainly on the requirements for the selection and erection of SPDs for protection against transient overvoltages where required by IEC 60364-4-44:2007, Clause 443, the EN 62305 series, or as otherwise specified.*Clause 534 does not take into account:*- surge protective components which may be incorporated in the appliances connected to the installation;*- portable SPDs*NOTE - Further information can be found in CLC/TS 61643-12.*Clause 534 applies to a.c. power circuits. As far as it is applicable, the requirements of this clause may be followed for d.c. power circuits.
Danish Standards [ds]