IEC TS 60076-20:2017(E) is applicable to transformers in the scope of IEC 60076-1. It proposes two methods of defining an energy efficiency index and introduces three methods of evaluating the energy performance of a transformer. The appropriate method is chosen by agreement between purchasers and manufacturers or according to local regulations.
The contents of the corrigendum of January 2018…
Electricity metering (AC) - Tariff and load control - Part 21: Particular requirements for time swit...
IEC 62054-21:2004+A1:2017 specifies particular requirements for the type test of newly manufactured indoor time switches with operation reserve that are used to control electrical loads, multi-tariff registers and maximum demand devices of electricity metering equipment. This publication is of high relevance for Smart Grid. This consolidated version consists of the first edition (2004) and its…
Household and similar electrical appliances - Safety - Part 2-53: Particular requirements for sauna ...
IEC 60335-2-53:2011+A1:2017 deals with the safety of electric sauna heating appliances and infrared emitting units having a rated power input not exceeding 20 kW, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. The appliances covered by this standard are intended for use in the home and in public saunas located in blocks of flats, hotels…
Measurement procedures for materials used in photovoltaic modules - Part 1-6: Encapsulants - Test me...
IEC 62788-1-6:2017 defines the terminology, test equipment, test environment, specimen preparation, test procedures, and test report for measuring the degree of cure of Ethylene-Vinyl Acetate (EVA) encapsulation sheet used in photovoltaic (PV) modules. The differential scanning calorimetry (both residual enthalpy and melt/freeze protocols) and gel content methods are included herein. This…
Optical amplifiers - Part 5-2: Qualification specifications - Reliability qualification for optical ...
IEC 61291-5-2:2017(E) applies to optical amplifiers (OAs) and optically amplified, elementary sub-systems for terrestrial applications, using active fibres (optical fibre amplifiers (OFAs)) containing rare-earth dopants, which are commercially available. The black box approach is used in this document. The black box approach is adopted in order to give product specifications which are independent…
Optical fibres - Part 1-1: Measurement methods and test procedures - General and guidance
<!-- NEW -->IEC 60793-1-1:2017 is available as IEC 60793-1-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
<p>IEC 60793-1-1: 2017 lists and gives guidance on the use of documents giving the uniform requirements for measuring and testing optical fibres, thereby assisting in the…
Soil quality — Sampling — Part 201: Physical pretreatment in the field
ISO 18400-201:2017 specifies methods for the pretreatment of samples that can be applied "in the field" directly after sampling. Pretreatment methods in this document are limited to:
- sample division methods aimed at reducing the size/volume of the sample;
- the production of composite samples;
- the selection of a specific fraction of the sampled material.
ISO 18400-201…
