By Angelo Baggini / Published on Sun, 2008-12-07 10:00
Year: 2006
Policy Status: In force
The Japanese government adopted the "Basic Program for Housing" on 19 September 2006, planning to improve housing standards over the next 10 years. The plan was presented by the Ministry of Land, Infrastructure and Transport on 28 June 2006 based on the current Basic Act for Housing, which has been in effect since 8 June 2006.
The Ministry has clear targets for housing by 2015. Building efficiency figures in two of the four target areas:
- 40 percent of housing should have energy saving measures, for example double-paned windows (18% as of 2003);
- to increase the life span of housing to about 40 years (about 30 years as of 2003).
By regularly analyzing and evaluating the effectiveness of the project using target assessment indicators, the Ministry intends to reappraise and modify the plan in five years based on the effectiveness of these measures and changes in social conditions.
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By Bryony Samuel / Published on Wed, 2008-12-03 14:12
This Application Note discusses the sizing of neutral conductors in the presence of ‘triple-N’ harmonics– that is, currents with a harmonic order that is a multiple of three. This issue is particularly important in low voltage systems where harmonic pollution by single phase loads is an increasingly serious problem. Triple-N harmonic currents add arithmetically with the result that neutral currents that are often significantly higher than the phase currents.
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By Antoni Klajn / Published on Wed, 2008-12-03 10:58
The EN 50160 standard defines the Voltage characteristic of electricity supplied by public supply networks. The standard is written in statistical terms, setting limits for various parameters that should be achieved for 95 % of the time. This Application Note discusses the standard, implications for users and methods of measurement for compliance. The standard serves as a benchmark but that does not mean that an installation supplied from a complianr network will be free of PQ issues.
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By Hans De Keulenaer / Published on Wed, 2008-10-01 20:55
By A Nikolic et al
The main aim of the paper is design and implementation of measuring and information system for analysis of power quality in compliance with EN 50160 in different points of power supply network. Designed information system provides communication between distributed databases and central information system in using Internet and GPRS/GSM network.
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By Hans De Keulenaer / Published on Thu, 2008-09-04 09:01
Math Bollen, Mark Stephens, Kurt Stockman, Bill Brumsickle, Saša Djokiæ, Alex McEachern, José Romero Gordon
This paper presents the status of the work, by April 2008, in C4.110,
a joint working group by CIGRE, CIRED and UIE. Contributions of the
working group are: a summary of voltage dip characteristics; a
methodology to assess the performance of a complete installation and;
recommendations for testing and immunity of equipment.
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By Angelo Baggini / Published on Mon, 2008-08-11 09:00
Year: 2007
Policy Status: In force
Many of the major energy-using products are globally traded goods and therefore to realise its goal of raising product standards, the UK Government has made a commitment 'to promote international cooperation on product labelling and standards':
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By Hans De Keulenaer / Published on Fri, 2008-07-25 16:56
By P Lloret et al
In the last decades there have been great advances in electronic, information and communication technologies. Up to date, any of these advances have been implemented in electrical systems, but some difficulties have been encountered, particularly regarding to the integration of intelligent electronic devices from different manufactures into a centralized system. With the aim of solving the above mentioned problem, the standard IEC 61850 was developed to specify communication networks in substations.
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By Angelo Baggini / Published on Mon, 2008-06-30 10:32
The International Electrotechnical Commission (IEC) is launching a new product that will make life easier for many users of new editions of IEC International Standards.
A new derived product called “IEC Standards+” is now available.
It consists of a package which includes both the new edition of an IEC Standard and an annexed Redline version.
The Redline version highlights the changes (additions, replacements or deletions) between the new edition and its previous version.
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By Hans De Keulenaer / Published on Fri, 2008-05-23 15:59
By A Broshi
Power Quality monitoring has become a standard task in electrical network management.
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By Sergio Ferreira / Published on Fri, 2008-05-09 14:51
Based on a Discussion Webinar, Friday 25th April 2008
The EU directive on the labelling of household appliances is a success. Since its entry into force in 1992, efficiency of appliances has risen considerably. With directive currently under revision, there is an opportunity to take the next step.
Should this programme also be extended to other products such as industrial equipment, for example? Or even to entire systems such as buildings? But maybe there are already too many labels on the market, to the confusion of consumers? How can the accuracy of label attribution be monitored, and should labelling programmes be accompanied by Minimum Efficiency Performance Standards (MEPS)? Finally, should labelling promote the best products or phase out the most inefficient products from the market?
These and other questions were addressed in a Discussion Webinar on 25th April 2008. Below are a few of the highlights from that discussion.
The European labelling scheme
Refrigerators are an excellent example demonstrating the impact of the EU labelling directive. The majority of refrigerators sold have shifted from efficiency categories D and E in 1992 to A and B in 2003. The categories with lower efficiency, E, F and G - about 50% of the market share in 1992 - have almost disappeared.
However, the current directive has a few shortcomings. Unlike safety labels, efficiency labels are not compulsory for all classes of electrical equipment. Furthermore, only “cold appliances” (freezers and refrigerators) are subject to MEPS.
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By Angelo Baggini / Published on Mon, 2008-03-31 16:29
The increase in energy demand, the growing instability in energy supply and the EU CO2 emmissions reduction commitments have stressed the need for an international strategy on energy efficiency and the diversification of energy sources.
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By Angelo Baggini / Published on Mon, 2008-03-31 16:18
The increase in energy demand, the growing instability in energy supply and the EU CO2 emmissions reduction commitments have stressed the need for an international strategy on energy efficiency and the diversification of energy sources.
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By Angelo Baggini / Published on Mon, 2008-03-31 15:49
The increase in energy demand, the growing instability in energy supply and the EU CO2 emmissions reduction commitments have stressed the need for an international strategy on energy efficiency and the diversification of energy sources.
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By Angelo Baggini / Published on Mon, 2008-03-31 15:14
The increase in energy demand, the growing instability in energy supply and the EU CO2 emmissions reduction commitments have stressed the need for an international strategy on energy efficiency and the diversification of energy sources.
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By Angelo Baggini / Published on Mon, 2008-03-31 13:48
This publication by IEC summarizes the international standards work carried out by TC 4, TC 82, TC 88 and TC 105 in the areas of water, sun, wind and alternative energy fuel cells.
IEC is active in this area through:
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By Angelo Baggini / Published on Wed, 2008-03-26 17:08
The new EN 50464-1 Standard on three-phase oil-immersed distribution transformers 50 Hz, covering transformers up to 36 kV with power from 50 kVA to 2 500 kVA intended for indoor or outdoor continuous service introduced some remarkable new prescriptions on losses and efficiency according to a specific request by the European Commission.
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By Angelo Baggini / Published on Tue, 2008-03-25 13:28
A publication by IEC, summarising the international standards work carried out by IEC technical committees and emphasising future directions in the field of efficiency in energy distribution and transmission, contains a reference to the Leonardo ENERGY community on page 14:
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