Obecné elektrotechnické normy

Komise : IEC/TC 119 (Printed electronics)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 26.03.2019
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This part of IEC 62899 provides a method of in-situ measurement for the resistance change of metal based conductive layer formed by printing methods on flexible substrate under specified temperature and humidity conditions.

Oblast zaměření: Supravodivost
Komise : IEC/TC 90 (Superconductivity)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 26.03.2019
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This part of IEC 61788 describes measurement of the surface resistance of superconductors at microwave frequencies by the standard two-resonator method. The object of measurement is the temperature dependence of Rs at the resonant frequency.

The applicable measurement range of surface resistances for this method is as follows:

–   Frequency:                      8 GHz < f < 30 GHz

–   Measurement resolution:   0,01 mW at 10 GHz

The surface resistance data at the measured frequency, and that scaled to 10 GHz, assuming the f 2 rule for comparison, shall be reported.

Oblast zaměření: Spolehlivost
Komise : IEC/TC 56 (Dependability)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 26.03.2019
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This document provides guidance on a review methodology for dependability from a technical perspective that is applicable at all stages of a system life cycle. Application of the guidance improves dependability of the target item and its life cycle by triggering appropriate actions against potential dependability problems at appropriate times.

NOTE   This document does not cover reviews that necessitate involvement of top management such as reviews specific to open systems dependability.

It provides guidance for developers, manufacturers, users and third-party independent reviewers such as consulting organization.

This document describes a dependability review methodology focusing on:

coherence of review activities across life cycle stages and their impact on dependability;

stakeholder identification and how this affects dependability review activities;

the relationships between different types of review;

procedures for effective dependability reviews;

examples of dependability review activities.

Komise : IEC/TC 104 (Environmental conditions, classification and methods of test)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 3.04.2019
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This part of IEC 60721 establishes a guidance for the use of all parts of IEC 60721-3. It contains background information including information on application and limitation of the classes given in various parts of the IEC 60721-3 series which may be used in the design, limitation of conditions and protection of equipment.

Reference to IEC 60721-3-0 is strongly recommended in order to avoid misuse of the classes defined in the other parts of IEC 60721-3.

Oblast zaměření: Koordinace izolace
Komise : IEC/TC 109 (Insulation co-ordination for low-voltage equipment)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 17.04.2019
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This part of IEC 60664 deals with insulation coordination for equipment having a rated voltage up to AC 1 000 V or a rated voltage up to DC 1 500 V connected to low-voltage supply systems.

This document applies to frequencies up to 30 kHz.

NOTE 1 Insulation coordination for equipment within low-voltage supply systems with rated frequencies above 30 kHz is given in IEC 60664-4.

NOTE 2 Higher voltages can exist in internal circuits of the equipment.

It applies to equipment for use up to 2 000 m above sea level, and provides guidance for use at higher altitudes.

It provides requirements for technical committees to determine clearances, creepage distances and criteria for solid insulation. It includes methods of electric testing with respect to insulation coordination.

The minimum clearances specified in this document do not apply where ionized gases are present. Special requirements for such situations can be specified at the discretion of the relevant technical committee.

This document does not deal with distances:

through liquid insulation;

through gases other than air;

through compressed air.

This basic safety publication is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51. It is not intended for use by manufacturers or certification bodies.

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.

However, in case of missing specified values for clearances, creepage distances and requirements for solid insulation in the relevant product standards, or even missing standards, this document can be used.

Komise : IEC/TC 111 (Environmental standardization for electrical and electronic products and systems)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 24.04.2019
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This part of IEC 62321 specifies the screening analysis of fluorine, chlorine and bromine in in polymers and electronics using Combustion- Ion chromatography (C-IC).  A (C-IC) screening analysis procedure for iodine can be found in an informative annex of this document. 

This test method has been evaluated for ABS (acrylonitrile butadiene styrene), EMC (epoxy molding compound), PE (polyethylene) and PC (polycarbonate) within the concentration ranges as specified in Table 1, 2 and 3.

The use of this method for other types of materials or concentration ranges outside those specified below has not been evaluated.

Komise : IEC/TC 104 (Environmental conditions, classification and methods of test)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 24.04.2019
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This document provides a standard method to determine the resistance of marking, lettering, surfaces and materials to abrasion arising from manual operation. The method is applicable to marking, lettering, surfaces and materials on flat or curved surfaces such as those that may occur on actuators and keyboards. The method can test the abrasion resistance in the presence of fluids, pastes, particles and other materials, singly or in combination.

Komise : IEC/SC 77B (High frequency phenomena)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 24.04.2019
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This part of IEC 61000 is applicable to the immunity requirements of electrical and electronic equipment to radiated electromagnetic energy. It establishes test levels and the required test procedures.

The object of this document is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to radiated, radio-frequency electromagnetic fields. The test method documented in this part of IEC 61000 describes a consistent method to assess the immunity of an equipment or system against RF electromagnetic fields from RF sources not in close proximity to the EUT. The test environment is specified in Clause 6.

NOTE 1 As described in IEC Guide 107, this is a basic EMC publication for use by product committees of the IEC. As also stated in Guide 107, the IEC product committees are responsible for determining whether this immunity test standard should be applied or not, and if applied, they are responsible for determining the appropriate test levels and performance criteria. TC 77 and its sub-committees are prepared to co-operate with product committees in the evaluation of the value of particular immunity tests for their products.

NOTE 2 Immunity testing against RF sources in close proximity to the EUT is defined in IEC 61000-4-39.

Particular considerations are devoted to the protection against radio-frequency emissions from digital radiotelephones and other RF emitting devices.

NOTE 3 Test methods are defined in this part for evaluating the effect that electromagnetic radiation has on the equipment concerned. The simulation and measurement of electromagnetic radiation is not adequately exact for quantitative determination of effects. The test methods defined in this basic document have the primary objective of establishing an adequate reproducibility of testing configuration and repeatability of test results at various test facilities.

This document is an independent test method. It is not possible to use other test methods as substitutes for claiming compliance with this document.

Komise : IEC/TC 89 (Fire hazard testing)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 30.04.2019
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The terms and definitions in this standard are applicable to fire tests for electrotechnical products.

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.

Komise : IEC/TC 111 (Environmental standardization for electrical and electronic products and systems)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 14.05.2019
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This Part of IEC 62321 specifies one normative technique for the determination of polycyclic aromatic hydrocarbons (PAHs) in polymers of electrotechnical products. Especially these PAHs can be found in the plastic and rubber parts of a wide range of consumers articles. They are present as impurities in some of the raw materials used in the production of such articles, in particular in extender oils and in carbon black. They are not added intentionally to the articles and do not perform any specific function as constituents of the plastic or rubber parts.

The gas chromatography–mass spectrometry (GC-MS) test method is suitable for the determination of polycyclic aromatic hydrocarbons (PAHs). 

These test methods have been evaluated for use with plastics and rubbers. These test methods have been evaluated for use with ABS (acrylonitrile butadiene styrene) containing individual PAHs between 37,2 mg/kg to 119 mg/kg and rubbers containing individual PAHs between 1 mg/kg to 221,2 mg/kg.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Oblast zaměření: Hliníkové elektrické vodiče
Komise : IEC/SC 46F (RF and microwave passive components)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 14.05.2019
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Scope

This part of IEC 63138, which is a sectional specification (SS), provides information and rules for the preparation of detail specifications (DS) for MQ4 series circular connector with four RF channels ,as well as a detailed specification of the blank format.

MQ4 series circular connector with 50 ohm nominal impedance has four RF channels which can be engaged and disengaged at the same time. There are two versions of plug connectors, one is quick lock version, the other is threaded version. The socket connector provides two coupling mechanisms, quick-lock and threaded coupling.

MQ4 series circular connectors can be used in mobile communication system and other communication equipment.

It also prescribes mating face dimensions and gauging information of MQ4 series circular connectors, and tests selected from IEC 63138, applicable to all detail specifications relating to MQ4 series circular connectors together with the pro forma blank detail specification.

Note: Metric dimension are original dimensions. All undimensioned pictorial configurations are for reference purpose only.

Komise : IEC/TC 15 (Solid electrical insulating materials)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 21.05.2019
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This part of IEC 60667 gives requirements for vulcanized fibre sheets for electrical purposes. Material made by combining with an adhesive several thicknesses of vulcanized fibre is not covered by this standard.

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 15 (Solid electrical insulating materials)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 21.05.2019
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This part of IEC 60667 gives methods of test for vulcanized fibre sheets for electrical purposes. Material made by combining with an adhesive several thicknesses of vulcanized fibre is not covered by this standard.

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 15 (Solid electrical insulating materials)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 21.05.2019
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This part of IEC 60667 gives the definitions and general requirements for vulcanized fibre sheets for electrical purposes. Material made by combining with an adhesive several thicknesses of vulcanized fibre is not covered by this standard.

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.