Infoteenus
17 METROLOOGIA JA MÕÕTMINE. FÜÜSIKALISED NÄHTUSED
Uued standardid
EVS-EN IEC 60216-1:2026
Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results
Käsitlusala:
This part of IEC 60216 specifies general ageing conditions and the methods to be used to derive thermal endurance characteristics from them, and gives recommendations for the use of the detailed instructions and guidelines in other parts of the standard.
Although originally developed for use on electrical insulating materials and simple combinations of such materials, these methods are considered to be more generally applicable and are widely used to test materials not intended for use as electrical insulators.
In the application of this standard, it is assumed that a substantially linear relationship exists between the logarithm of the time required to produce the predetermined change in the property, and the reciprocal of the corresponding absolute temperature (the Arrhenius relationship).
For the standard to be valid, there should be no transitions, particularly first-order transitions, within the temperature range under consideration.
In the remainder of the text of this standard, the term "insulating materials" is always taken to mean "insulating materials and simple combinations of such materials".
Although originally developed for use on electrical insulating materials and simple combinations of such materials, these methods are considered to be more generally applicable and are widely used to test materials not intended for use as electrical insulators.
In the application of this standard, it is assumed that a substantially linear relationship exists between the logarithm of the time required to produce the predetermined change in the property, and the reciprocal of the corresponding absolute temperature (the Arrhenius relationship).
For the standard to be valid, there should be no transitions, particularly first-order transitions, within the temperature range under consideration.
In the remainder of the text of this standard, the term "insulating materials" is always taken to mean "insulating materials and simple combinations of such materials".
Alusdokumendid:
EN IEC 60216-1:2026; IEC 60216-1:2025
Asendab:
EVS-EN 60216-1:2013
IEC 60704-2-19:2026
Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-19: Particular requirements for air cleaners
Käsitlusala:
IEC 60704-2-19:2026 applies to stationary freestanding and wall-mounted air cleaners for domestic and similar use, supplied from mains, d.c. voltage not exceeding 48 V or batteries. This document includes combination products, where air cleaning is combined with for example humidification, but can be used only for the air cleaning function.
This Part 2-19 is intended to be used in conjunction with IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.
This Part 2-19 is intended to be used in conjunction with IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.
Alusdokumendid:
ISO 23131-3:2026
Ellipsometry — Part 3: Transparent single layer model
Käsitlusala:
This document uses ellipsometric measurements and their analysis to specify the method for the determination of the layer thickness d of a transparent layer and the optical (refractive index n) or dielectric (real part ε1) constants/functions based on the transparent single layer model within a spectral region, for which k = 0 applies.
Alusdokumendid:
ISO 23131-2:2026
Ellipsometry — Part 2: Bulk material model
Käsitlusala:
This document specifies the process for determining the optical or dielectric constants by means of ellipsometric measurements and their analysis based on the bulk material model.
If the assumptions of the bulk material model are strictly met, it is possible to determine the optical constants (refractive index n and extinction coefficient k) or the dielectric constants (real part ε1 and imaginary part ε2) of the material directly. Alternatively, optical (<n> and <k>) or dielectric (<ε1> and <ε2>) pseudo constants are determined, which depend on the measurement angle of incidence φ. The degree of consistency of the pseudo constants in the relevant spectral range, determined from measurements at different angles of incidence, represents a necessary prerequisite for the validity or quality of the bulk material model.
If the assumptions of the bulk material model are strictly met, it is possible to determine the optical constants (refractive index n and extinction coefficient k) or the dielectric constants (real part ε1 and imaginary part ε2) of the material directly. Alternatively, optical (<n> and <k>) or dielectric (<ε1> and <ε2>) pseudo constants are determined, which depend on the measurement angle of incidence φ. The degree of consistency of the pseudo constants in the relevant spectral range, determined from measurements at different angles of incidence, represents a necessary prerequisite for the validity or quality of the bulk material model.
Alusdokumendid:
IEC 60704-2-19:2026 EXV
Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-19: Particular requirements for air cleaners
Käsitlusala:
IEC 60704-2-19:2026 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user with a comprehensive content of the Standard. IEC 60704-2-19:2026 EXV includes the content of the references made to IEC 60704-1:2021.
IEC 60704-2-19:2026 applies to stationary freestanding and wall-mounted air cleaners for domestic and similar use, supplied from mains, d.c. voltage not exceeding 48 V or batteries. This document includes combination products, where air cleaning is combined with for example humidification, but can be used only for the air cleaning function.
This Part 2-19 is intended to be used in conjunction with IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.
IEC 60704-2-19:2026 applies to stationary freestanding and wall-mounted air cleaners for domestic and similar use, supplied from mains, d.c. voltage not exceeding 48 V or batteries. This document includes combination products, where air cleaning is combined with for example humidification, but can be used only for the air cleaning function.
This Part 2-19 is intended to be used in conjunction with IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.
Alusdokumendid:
Asendatud standardid
EVS-EN 60216-1:2013
Electrical insulating materials - Thermal endurance properties -- Part 1: Ageing procedures and evaluation of test results
Käsitlusala:
IEC 60216-1:2013 specifies the general ageing conditions and procedures to be used for deriving thermal endurance characteristics and gives guidance in using the detailed instructions and guidelines in the other parts of the standard. Although originally developed for use with electrical insulating materials and simple combinations of such materials, the procedures are considered to be of more general applicability and are widely used in the assessment of materials not intended for use as electrical insulation. In the application of this standard, it is assumed that a practically linear relationship exists between the logarithm of the time required to cause the predetermined property change and the reciprocal of the corresponding absolute temperature (Arrhenius relationship). For the valid application of the standard, no transition, in particular no first-order transition should occur in the temperature range under study. This sixth edition cancels and replaces the fifth edition, published in 2001. It constitutes an editorial revision where the simplified method has been removed and now forms Part 8 of the IEC 60216 series: Instructions for calculating thermal endurance characteristics using simplified procedures.
Alusdokumendid:
IEC 60216-1:2013; EN 60216-1:2013
Asendatud:
EVS-EN IEC 60216-1:2026