Standard for Centrifugal Stationary Pumps for Fire-Protection Service
1.1 These requirements cover stationary centrifugal fire pumps intended for use in water-supply systems
for fire-protection service.
1.2 The pumps covered by these requirements are intended for installation and use in accordance with
the Standard for the Installation of Stationary Pumps for Fire Protection, NFPA 20.
Pompes centrifuges stationnaires pour le service de protection contre les incendies
1.1 Ces exigences s’appliquent aux pompes d’incendie centrifuges stationnaires destinées à être
utilisées dans les systèmes d’alimentation en eau pour le service de protection contre les incendies.
1.2 Les pompes visées par ces exigences sont destinées à être installées et utilisées conformément à la
norme Standard for the Installation of Stationary Pumps for Fire Protection, NFPA 20.
Information technology — Digitally recorded media for information interchange and storage — 120 mm T...
This document specifies the mechanical, physical and optical characteristics of a 120 mm rewritable optical disk with a capacity of 100,0 Gbytes. It specifies the quality of the recorded and unrecorded signals, the format of the data and the recording method, thereby allowing for information interchange by means of such disks. User data can be written, read and overwritten many times using a…
Information technology - Digitally recorded media for information interchange and storage - 120 mm T...
This document specifies the mechanical, physical and optical characteristics of a 120 mm rewritable optical disk with a capacity of 100,0 Gbytes. It specifies the quality of the recorded and unrecorded signals, the format of the data and the recording method, thereby allowing for information interchange by means of such disks. User data can be written, read and overwritten many times using a…
Fibre optic sensors - Part 1-1: Strain measurement - Strain sensors based on fibre Bragg gratings
IEC 61757-1-1:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.
IEC 61757-1-1:2020 defines detail specifications for fibre optic sensors using one or more fibre Bragg gratings (FBG…
Use case methodology - Part 4: Best practices in use case development for IEC standardization proces...
IEC SRD 62559-4:2020 specifies best practices for an entity to engage in a use cases redaction process to determine and describe their user requirements for systems, based on the business needs. It complements the information in IEC TR 62559-1, IEC 62559-2 and IEC 62559-3 by providing users with best practices in:
- use cases drafting process,
- determining the skill sets of the people required…
Fibre optic sensors - Part 1-1: Strain measurement - Strain sensors based on fibre Bragg gratings
IEC 61757-1-1:2020 defines detail specifications for fibre optic sensors using one or more fibre Bragg gratings (FBG) as the sensitive element for strain measurements. Generic specifications for fibre optic sensors are defined in IEC 61757. This document specifies the most important features and characteristics of a fibre optic sensor for strain measurements, based on use of an FBG as the…
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 3: Half pot...
IEC 63093-3:2020 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of half pot-cores made of ferrite, intended to be used in inductive proximity switches. Half pot-cores for inductive proximity switches are also called PS-cores.
The selection of core sizes and shapes for this document is based on the philosophy of including those sizes and…
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 2: Pot-core...
IEC 63093-2:2020 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of pot-cores made of ferrite, and the dimensional limits for coil formers to be used with them, as well as the effective parameter values to be used in calculations involving them. It also gives guidelines on the allowable limits of surface irregularities applicable to pot-…
Equipment for general lighting purposes - EMC immunity requirements
IEC 61547:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.
IEC 61547:2020 which deals with electromagnetic immunity requirements, applies to lighting equipment which is within the…
