Insulation co-ordination - Part 11：Definitions, principles and rules for HVDC system
IEC 60071-11:2022 applies to high-voltage direct current (HVDC) systems. It specifies the principles on the procedures for the determination of the specified withstand voltages, creepage distance and air clearances for the equipment and the installations of these systems.
This document gives the insulation co-ordination principles related to line commutated converter (LCC) and voltage sourced…
Graphical symbols for electrical equipment in medical practice
IEC TR 60878:2022 provides a compilation, for easy reference, of graphical symbols (graphics, title, description) and safety signs for medical electrical equipment. The graphical symbols are grouped in sections according to their specific field of application (see Clause 4).
IEC TR 60878:2022 cancels and replaces the third edition published in 2015. This fourth edition constitutes a technical…
Nanomanufacturing - Key control characteristics - Part 6-22: Graphene-based material - Ash content: ...
IEC TS 62607-6-22:2022 establishes a standardized method to determine the key control characteristic
ash content
of powder and dispersion of graphene-based material by
incineration.
The ash content is derived by residue obtained after incineration under the operating conditions specified in this document, being divided by the mass of the dried test portion.
The method is…
Determination of hydroxytyrosol and tyrosol content in extra virgin olive oils — Reverse phase high ...
This document specifies a method for the quantitative determination of hydroxytyrosol and tyrosol content in extra virgin olive oils using reverse phase high performance liquid chromatography (RP-HPLC) with spectrophotometric detection.
The method is also applicable to all other olive oils of a different commercial category.
Welding consumables — Tubular-cored electrodes for gas-shielded and non-gas-shielded metal arc weldi...
This document specifies requirements for the classification of tubular-cored electrodes for metal arc welding with or without a gas shield of nickel and nickel alloys. It includes those compositions in which the nickel content exceeds that of any other element.
Information technology - MPEG video technologies - Part 7: Versatile supplemental enhancement inform...
This document specifies the syntax and semantics of video usability information (VUI) parameters and supplemental enhancement information (SEI) messages. The VUI parameters and SEI messages defined in this document are designed to be conveyed within coded video bitstreams in a manner specified in a video coding specification or to be conveyed by other means determined by the specifications for…
Information technology — MPEG video technologies — Part 7: Versatile supplemental enhancement inform...
This document specifies the syntax and semantics of video usability information (VUI) parameters and supplemental enhancement information (SEI) messages. The VUI parameters and SEI messages defined in this document are designed to be conveyed within coded video bitstreams in a manner specified in a video coding specification or to be conveyed by other means determined by the specifications for…
Vitreous and porcelain enamels — Design of bolted steel tanks for the storage or treatment of water ...
This document specifies the requirements for the design and use of vitreous enamel coated bolted cylindrical steel tanks for the storage or treatment of water or municipal or industrial effluents and sludges.
It is applicable to the design of the tank and any associated roof and gives guidance on the requirements for the design of the foundation.
It is applicable where:
a) the tank is cylindrical…
Information technology — Genomic information representation — Part 3: Metadata and application progr...
This document specifies information metadata, auxiliary fields, SAM interoperability, protection metadata and programming interfaces of genomic information. It defines:
— metadata storage and interpretation for the different encapsulation levels as specified in ISO/IEC 23092-1 (in Clause 6);
— protection elements providing confidentiality, integrity and privacy rules at the different…
