Obecné elektrotechnické normy

Komise : IEC/TC 119 (Printed electronics)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 10.03.2020
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This International Standard specifies in-flight imaging methods for the measurement of the direction of ink drops jetted from inkjet print-heads using drop watchers. It does not apply to holographic or other interference techniques, or on any method assessing deposited ink drops. It is specific to drop-on-demand type inkjet print-heads (used in printed electronics equipment)

Komise : IEC/TC 112 (Evaluation and qualification of electrical insulating materials and systems)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 17.03.2020
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This part of IEC 60216 specifies the calculation procedures to be used for deriving thermal endurance characteristics from experimental data obtained in accordance with the instructions of IEC 60216-1 and IEC 60216-2, using fixed ageing temperatures and variable ageing times.

The experimental data may be obtained using non-destructive, destructive or proof tests. Data obtained from non-destructive or proof tests may be incomplete, in that measurement of times taken to reach the endpoint may have been terminated at some point after the median time but before all specimens have reached end-point.

The procedures are illustrated by worked examples, and suitable computer programs are recommended to facilitate the calculations.

Oblast zaměření: Elektromagnetické nebezpečí
Komise : IEC/TC 106 (Methods for the assessment of electric, magnetic and electromagnetic fields associated with human exposure)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 17.03.2020
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This document specifies computational procedures for conservative, repeatable, and reproducible computations of power density (PD) incident to a human head or body due to radio-frequency (RF) electromagnetic field (EMF) transmitting devices, using finite-difference time-domain (FDTD) and finite element methods (FEM), with a specified computational uncertainty. These protocols and procedures apply for exposure assessments of a significant majority of the population, including children, during the use of hand-held and body-worn RF transmitting devices. The methods apply for devices that can feature single or multiple transmitters or antennas, and can be operated with their radiating part(s) at distances up to 200 mm from a human head or body.

This document can be employed to determine compliance with any applicable maximum PD requirements of different types of RF transmitting devices used in close proximity to the head and body, including if combined with other RF-transmitting or non-transmitting devices or accessories (e.g. belt-clip), or embedded in garments. The overall applicable frequency range of these protocols and procedures is from 6 GHz to 300 GHz.

The RF transmitting device categories covered in this document include but are not limited to mobile telephones, radio transmitters in personal computers, desktop and laptop devices, and multi-band and multi-antenna devices.

The procedures of this document do not apply to PD assessment of electromagnetic fields emitted or altered by devices or objects intended to be implanted in the body.

Oblast zaměření: Elektromagnetické nebezpečí
Komise : IEC/TC 106 (Methods for the assessment of electric, magnetic and electromagnetic fields associated with human exposure)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 17.03.2020
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This document specifies protocols and test procedures for conservative, repeatable, and reproducible measurements of power density (PD) incident to a human head or body due to radio-frequency (RF) electromagnetic field (EMF) transmitting devices, with a specified measurement uncertainty. These protocols and procedures apply to a significant majority of the population, including children, during the use of hand-held and body-worn RF transmitting devices. The methods apply for devices that can feature single or multiple transmitters or antennas, and can be operated with their radiating part(s) at distances up to 200 mm from a human head or body.

This document can be employed to determine compliance to any applicable maximum PD requirements of different types of RF transmitting devices used in close proximity to the head and body, including if combined with other RF transmitting or non-transmitting devices or accessories (e.g. belt-clip), or embedded in garments. The overall applicable frequency range of these protocols and procedures is from 6 GHz to 300 GHz.

The RF transmitting device categories covered in this document include but are not limited to mobile telephones, radio transmitters in personal computers, desktop and laptop devices, and multi-band and multi-antenna devices.

NOTE For the assessment of the combined exposure from simultaneous transmitters at frequencies below 6 GHz, the relevant standard for SAR measurements is IEC/IEEE 62209-1528.

The procedures of this document do not apply for EMF measurements of devices or objects intended to be implanted in the body.

Komise : IEC/TC 15 (Solid electrical insulating materials)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 17.03.2020
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This sheet of IEC 60674-3 gives the requirements for biaxially oriented polypropylene film having a smooth or rough surface, corona treated when required for vacuum metallization. The films are for use as dielectric in capacitors.

Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone.

Safety warning: It is the responsibility of the user of the methods contained or referred to in this document to ensure that they are used in a safe manner.

Komise : IEC/TC 89 (Fire hazard testing)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 24.03.2020
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This part of IEC 60695 specifies the details of the glow-wire test to be applied to test specimens of solid electrical insulating materials or other solid materials for flammability testing to determine the glow-wire flammability index (GWFI).

GWFI is the highest temperature, determined during this standardized procedure, at which the tested material does not ignite or, if it does, extinguishes within 30 s after removal of the glow-wire and is not totally consumed; and molten drips, if they occur, do not ignite the wrapping tissue.

This test method is a materials test carried out on a series of standard test specimens. The data obtained, along with data from the glow-wire ignition temperature (GWIT) test method for materials, IEC 60695-2-13, can then be used in a preselection process in accordance with IEC 60695-1-30 to judge the ability of materials to meet the requirements of IEC 60695-2-11 [3].

NOTE As an outcome of conducting a fire hazard assessment, an appropriate series of preselection flammability and ignition tests may allow a reduction of end product testing.

This basic safety publication is intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51.

One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the relevant publications.

Oblast zaměření: Magnetické slitiny
Komise : IEC/TC 68 (Magnetic alloys and steels)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 24.03.2020
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This part of IEC 60404 defines the grades of electrical steel strip and sheet with specified mechanical properties and magnetic polarization. In particular, it gives general requirements, mechanical properties, magnetic polarization, geometric characteristics, tolerances and technological characteristics, as well as inspection procedures.

This document applies to materials intended for the construction of poles and rims of rotating electrical machines.

The grades are grouped into two classes according to their manufacturing process:

hot-rolled grades;

cold-rolled grades.

They correspond to Class D21 of IEC 60404-1.

Komise : IEC/CIS/B (Interference relating to industrial, scientific and medical radio-frequency apparatus, to other (heavy) industrial equipment, to overhead power lines, to nigh voltage equipment and to electric traction)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 15.04.2020
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Amendment

Komise : IEC/TC 119 (Printed electronics)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 15.04.2020
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This part of IEC 62899 specifies a measuring method of contact resistance for the printed thin film transistor (TFT) by the transfer length method (TLM).

Komise : IEC/TC 119 (Printed electronics)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 15.04.2020
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This part of IEC 62899 specifies the optical measurement method for acquiring two-dimensional image of voids and obtaining attributes related to voids in the dried or cured printed patterns which are parts of electronic products in the field of printed electronics. In this document, void means imperfection of pattern observed from 2-dimensional(2D) top-view. The measurable voids using this standard is limited to those that are distinguishable by the optical image measurement

Komise : IEC/CIS/B (Interference relating to industrial, scientific and medical radio-frequency apparatus, to other (heavy) industrial equipment, to overhead power lines, to nigh voltage equipment and to electric traction)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 15.04.2020
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Amendment

Komise : IEC/TC 119 (Printed electronics)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 15.04.2020
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This part of IEC 62899 specifies a measuring method of contact resistance for the printed thin film transistor (TFT) by the transfer length method (TLM).This part of IEC 62899 specifies a measuring method of contact resistance for the printed thin film transistor (TFT) by the transfer length method (TLM).

Komise : IEC/TC 119 (Printed electronics)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 15.04.2020
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This part of IEC 62899 specifies the optical measurement method for acquiring two-dimensional image of voids and obtaining attributes related to voids in the dried or cured printed patterns which are parts of electronic products in the field of printed electronics. In this document, void means imperfection of pattern observed from 2-dimensional(2D) top-view. The measurable voids using this standard is limited to those that are distinguishable by the optical image measurement