Obecné elektrotechnické normy

Komise : IEC/TC 119 (Printed electronics)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 23.07.2019
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This standard specifies a measurement method for the peel strength of printed layer on flexible substrate in printed electronics. This method describes a 90° peel process. The test method can be used to characterize any printed layer or coating, e.g. dielectric films. The method described in this document is to compare the peel strengths of the printed layers on the same flexible substrate and thickness conditions. It can be used when the adhesion between the printed layer and flexible substrate is weaker than any other interface between the printed layer and the adhesive, the adhesive and the panel.

Oblast zaměření: Supravodivost
Komise : IEC/TC 90 (Superconductivity)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 6.08.2019
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This part of IEC 61788 covers a test method for determining the DC critical current of short and straight RE (rare earth)-Ba-Cu-O (REBCO) superconductors that have a shape of flat tape. The test specimen covered by this test procedure should be shorter than 300 mm and have a rectangular cross section with an area of 0,03 to 7,2 mm2, which corresponds to the tapes with width ranging from 1,0 to 12,0 mm and thickness from 0,03 to 0,6 mm.

This method is intended for use with superconductors that have critical current less than 1000 A and n-values larger than 5 under standard test conditions: the test specimen is immersed in liquid nitrogen bath at ambient pressure without external magnetic field during the testing. Deviations from this test method that are allowed for routine tests and other specific restrictions are given in this standard.

Komise : IEC/CIS/F (Interference relating to household appliances, tools, lighting equipment and similar apparatus)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 20.08.2019
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This part of CISPR 14 specifies the electromagnetic immunity requirements in the frequency range 0 Hz to 400 GHz that apply to appliances, electric tools and similar equipment as specified below, whether powered by AC or DC (including a battery).

This document specifies immunity requirements for continuous and transient electromagnetic disturbances, both conducted and radiated.

Unless otherwise specified, this International Standard is applicable to all equipment in the scope of CISPR 14-1, namely:

household appliances or similar equipment;

NOTE 1  Examples are equipment used:

for typical housekeeping functions in the household environment, which includes the dwelling and its associated buildings, the garden, etc.;

for typical housekeeping functions in shops, offices, commercial and other similar working environments;

in farms;

by clients in hotels and other residential type environments;

for induction cooking, either in residential or commercial environments.

electric tools;

NOTE 2 Examples of electric tools include electric motor-operated or electromagnetically driven hand-held tools, transportable tools, lawn and garden machinery.

similar equipment;

NOTE 3  Examples are:

external power controllers using semiconductor devices

electric/electronic toys

automatic goods-dispensing machines

electro-mechanical entertainment machines

cine or slide projectors

personal care appliances

battery chargers and external power supplies for use with products under the scope of this document

 

Included in the scope of this document are also microwave ovens for domestic use or catering.

Excluded from the scope of this document are:

equipment for which all electromagnetic immunity requirements are explicitly formulated in other CISPR or IEC standards

NOTE 4  Examples are:

luminaires, including portable luminaires for children, discharge lamps, LED lamps and other lighting devices under the scope of IEC 61547 (but see 8.6);

multimedia equipment under the scope of CISPR 35;

mains communication devices, as well as baby surveillance systems;

arc welding equipment

equipment intended to be part of the fixed electrical installation of buildings (e.g. fuses, circuit breakers, cables and switches);

medical electrical equipment, including those in the scope of CISPR 14-1

equipment intended exclusively for heavy industrial purposes

equipment intended to be used exclusively in locations where special electromagnetic conditions exist (e.g. high electromagnetic fields nearby broadcast transmitting stations or high energy pulses nearby power generation stations);

equipment intended to be used exclusively on a vehicle, ship, boat or aircraft;

the effects of electromagnetic phenomena relating to the safety of apparatus (see IEC 60335 series)

radio transmitters and/or receivers which are not incorporated in equipment or auxiliary equipment under the scope of this document

NOTE 5  For handling cases where equipment under the scope of this document is combined with transmit and/or receive radio functions, see clause 8.

Also excluded from the scope of this document is single-phase equipment with a rated voltage higher than 250 V between phase and neutral and multi-phase equipment with rated voltage higher than 480 V.

Abnormal operation of the equipment, such as simulated faults in the electric circuitry for testing purposes, is not taken into consideration.

Komise : IEC/CIS/F (Interference relating to household appliances, tools, lighting equipment and similar apparatus)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 20.08.2019
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Amendment

Komise : IEC/CIS/F (Interference relating to household appliances, tools, lighting equipment and similar apparatus)
Původce: CEN
K připomínkám do: 20.08.2019
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Amendment

 

Within this standard wherever the term “equipment” is used it includes the more specific terms “appliance”, “household or similar appliances”, “electric tool”, “toys” and “apparatus”.

Komise : IEC/CIS/F (Interference relating to household appliances, tools, lighting equipment and similar apparatus)
Původce: CEN
K připomínkám do: 20.08.2019
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Amendment

Komise : IEC/TC 112 (Evaluation and qualification of electrical insulating materials and systems)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 27.08.2019
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This document is applicable to multifactor evaluation of an EIS for applications where the stresses of the application are a combination of the factors identified in IEC 60505. The severe operating conditions are expected to occur during operation at elevated temperatures.

This document establishes the procedure to evaluate the influence of stresses on the performance established following the thermal classification of the EIS. The thermal classification is established in Step 1 where the only ageing factor is thermal. The candidate EIS is first evaluated based on thermal stress only. This evaluation is defined as the baseline of the candidate EIS. In Step 2, the evaluation of the additional factors applied at elevated temperatures provides the measurement needed to establish the influence of the additional factors on the performance of the baseline EIS.

This document is about thermal endurance testing with one or more stress factors added during the thermal ageing process. It provides guidance regarding interpretation of the test results.

The performance of any product designed and constructed using the EIS established in accordance with this document shall be evaluated in accordance with the application requirements set by the appropriate IEC Technical Committee.