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This document specifies a method for the evaluation of the buckling load which: a) takes into account a geometric model of the hydraulic cylinder, meaning it does not treat the hydraulic cylinder as an equivalent column, b) can be used for all types of cylinder mounting and rod end connection specified in Table 2, c) includes a factor of safety, k, to be set by the person performing the…

IEC 60700-1:2015+A1:2021 applies to thyristor valves with metal oxide surge arresters directly connected between the valve terminals, for use in a line commutated converter for high voltage d.c. power transmission or as part of a back-to-back link. It is restricted to electrical type and production tests. The tests specified in this standard are based on air insulated valves. For other types of…

IEC 61753-111-09:2021 contains the minimum tests, test severities and measurement requirements which a sealed fibre optic closure need to meet in order to be categorised as meeting the IEC standard for category S – Subterannean, as defined in Table A.15 of IEC 61753‑1:2018. This first edition cancels and replaces IEC 61753-111-9 published in 2009. This edition constitutes a technical revision.…

IEC 62321-3-3:2021 specifies the screening analysis of polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs), di-isobutyl phthalate (DIBP), di-n-butyl phthalate (DBP), benzylbutyl phthalate (BBP), di-(2-ethylhexyl) phthalate (DEHP), di-n-octyl phthalate (DNOP), di-isononyl phthalate (DINP), and di-isodecyl phthalate (DIDP) in polymers of electrotechnical products using the…

IEC 61753-111-07:2021 contains the minimum tests, test severities and measurement requirements which a sealed fibre optic closure need to meet in order to be categorised as meeting the IEC standard for category A – Aerial, as defined in Table A.13 of IEC 61753‑1:2018. Free breathing closures are not covered in this document. This first edition cancels and replaces IEC 61753-111-7 published in…

1 Scope This Standard specifies particular safety requirements for electronic controlgear for use on d.c. supplies up to 380 V and a.c. supplies up to 600 V at 50 Hz or 60 Hz and at an output frequency that can deviate from the supply frequency, associated with LED modules. Notes: 1) A lamp controlgear for LED modules may also be referred to as “LED controlgear”, “LED driver”, “LED power…

1 Scope 1.1 This Standard specifies general and safety requirements for a) non-integrated light-emitting diode (LED) modules (LEDni modules) and semi-integrated LED modules (LEDsi modules) for operation under constant voltage, constant current, or constant power; and b) integrated LED modules (LEDi modules) for use on dc supplies up to 250 V or ac supplies up to 600 V. LED modules within…

1 Scope 1.1 Applicable equipment This Standard applies to newly produced direct gas-fired crop dryers of the recirculating or non- recirculating type, hereinafter referred to as “dryers”, the primary purpose of which is to provide process heating to dry farm crops. These dryers are used in non-occupied spaces and are constructed of non-combustible materials having input ratings of 20 000 000…

This document specifies the syntax and semantics of data objects in the field of electronic fee collection (EFC). The definitions of data types and assignment of values are provided in accordance with the abstract syntax notation one (ASN.1) technique, as specified in ISO/IEC 8824‑1. This document defines: —    ASN.1 (data) types within the fields of EFC; —    ASN.1 (data) types of a more general…

This document applies to the basic safety and essential performance of respiratory high-flow therapy equipment, as defined in 201.3.220, hereafter also referred to as ME equipment or ME system, in combination with its accessories: —   intended for use with patients who can breathe spontaneously; and —   intended for patients who would benefit from improved alveolar gas exchange; and who would…