Obecné elektrotechnické normy

Komise : IEC/TC 1 (Terminology)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 10.06.2020
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This part of IEC 60050 gives the general terminology used in applicable to electrical energy storage systems, as well as general terms pertaining to specific applications and associated technologies. This new edition reviews and complements the previous one. It has the status of a horizontal standard in accordance with IEC Guide 108, Guidelines for ensuring the coherency of IEC publications – Application of horizontal standards.

This terminology is consistent with the terminology developed in the other specialized parts of the IEV.

This horizontal standard is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 108.

One of the responsibilities of a technical committee is, wherever applicable, to make use of horizontal standards in the preparation of its publications.

Komise : IEC/TC 111 (Environmental standardization for electrical and electronic products and systems)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 21.07.2020
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This part of IEC 62321 provides strategies of sampling along with the mechanical preparation of samples from electrotechnical products. These samples can be used for analytical testing to determine the levels of certain substances as described in the test methods in other parts of IEC 62321. Restrictions for substances will vary between geographic regions and may be updated on a regular basis. This document describes a generic process for obtaining and preparing samples prior to the determination of any substance which are under concern.

This document does not provide:

full guidance on each and every product that could be classified as electrotechnical product. Since there is a huge variety of electrotechnical parts, with various structures and compositions, along with the continuous innovations in the industry, it is unrealistic to attempt to provide procedures for the disjointment of every type of part;

guidance regarding other routes to gather additional information on certain substances in a product, although the information collected has relevance to the sampling strategies in this document;

safe disassembly and mechanical disjointment instructions related to electrotechnical products (e.g. mercury-containing switches) and the recycling industry (e.g. how to handle CRTs or the safe removal of batteries). See IEC 62554 [1] for the disjointment and mechanical sample preparation of mercury-containing fluorescent lamps;

sampling procedures for packaging and packaging materials;

analytical procedures to measure the levels of certain substances. This is covered by other standards (for example other parts of IEC 62321), which are referred to as the "test standard" in this document;

guidelines for assessment of compliance.

Oblast zaměření: Supravodivost
Komise : IEC/TC 90 (Superconductivity)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 21.07.2020
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This part of IEC 61788 addresses a test method for the determination of the residual resistance ratio (RRR), , of cavity-grade niobium. This method is intended for high-purity niobium grades with 150 <  < 600. The test method should be valid for specimens with rectangular or round cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a length not less than 10 nor more than 25 times the width or diameter.