Codes and standards Challenges General overview

1. Codes and standards ChallengesGeneral overview

2. The International Electrotechnical Commission • The world’s leading organization that prepares and publishes International Standards for all electrical, electronic and related technologies. • Over 10 000 experts from industry, commerce, government, test and research labs, academia and consumer groups participate in IEC Standardization work. • All information is on www.iec.ch

3. The International Electrotechnical Commission

4. The International Electrotechnical Commission

6. IEC SMB SG4 • Set up in 2009 • Title: LVDC distribution systems up to 1500V DC • The objective • a global systematic approach • to align and coordinate activities in many areas where LVDC is used such as • green data centres, • commercial buildings, • electricity storage for all mobile products (with batteries), EVs etc, • including all mobile products with batteries, lighting, multimedia, ICT etc. with electronic supply units.

7. IEC SMB SG4 • The SG4 had 4 meetings • Twice in Stockholm (2009-12 and 2010-01) • Tokyo was held as an ad hoc meeting due to little participation due to the Icelandic volcano ash • Washington (2010-09) • Frankfurt (2011-02) • Next meetings are planned for • Japan (2011-11/12) • USA (2012/04)

8. IEC SMB SG4 • Main topics achieved • The title • Dc linked to energy efficiency or wider? • Decision: LVDC distribution systems up to 1500V DC • The scope • The objectives • The deliverables

9. IEC SMB SG4 The scope • To address the IEC standardization needs on systems and products to be used with dc voltages up to 1500 V and to indicate to SMB the directions for future standardization in this field. • To facilitate the effective and safe use of dc to address market needs, such as. • Energy efficiency • Reduction of EM phenomena • Reduction of the use of natural resources • To inform the concerned technical bodies on the draw backs related to dc, such as. • Arcing • Corrosion • Overvoltages

10. IEC SMB SG4 The scope • To set up a road map on how to reach global systematic approach on LVDC • Defining a structure for cross TC cooperation which promotes coordination of the work. • Encouraging the transfer of information between product committees and horizontal committees (bidirectional). • Encouraging regular TC reports on progress and planned work. • To accompany the progress in the implementation of the road map. • To support SMB to clear up possible overlaps between responsibilities of the related TCs and SCs • To address certain topics to the advisory committees if relevant and necessary

11. IEC SMB SG4 The objectives • Measuring methods • Architecture of the system: 100% dc or hybrid • System earthing (Grounding) • Operation of equipment. • Life cycle of equipment. • Protective measures for hazards of LVDC distribution systems. • Fire hazard: Insulation faults, making and breaking of current, overcurrent, arcing • Electric shock / worker safety • Overvoltage protection • The impact of dc on • corrosion • The characteristics of insulation material • insulation coordination • ignition and arcing

12. IEC SMB SG4The objectives – applications • LVDC can be used in applications, such as: • in the frame of Energy efficiency (reduction of conversion losses) • green data centres in US, JP, FR, SE, … • high tech buildings – continuous supply of electricity (e.g. In hospitals) • commercial buildings with a lot of lighting • DC-Grid / Sub-Grid • easy integration of renewable energy sources (dc), such as • Photovoltaic, fuel cells, wind turbines, osmotic power • island energy network (including local production and storage) • Easy integration of storage in the network (e.g. Batteries, flywheels) • to easily accommodate existing and new applications, e.g. • all mobile products (with batteries) • all products having electronic supply units (lighting, multi-media equipment, • ICT equipment, etc) • wiring system for data transfer • for charging electrical vehicles / vehicle to grid

13. IEC SMB SG4The deliverables • Analysing market and industry developments in its area, • Identifying the TCs (technical committees) and SCs (subcommittees) concerned, • Analysing the current level of TCs/SCs (technical committees/subcommittees) activities and identify where future activity is required, • Defining a structure for the coordination of cross TC/SC work, where required, • Monitoring TC/SC work to highlight any overlap of work or potential inconsistencies.

14. IEC SMB SG4The deliverables - market and industry developments • Analyzing market and industry developments in its area, • Workshops are organized • Now Washington • 2011/09 Frankfurt • Goals of the Frankfurt workshop: • To identify the market drivers for using LVDC(market drivers are e.g. E², safety, easy to install, reliability, maintenance, cost, availability of energy, size factor, EMC) • Challenges and available technology • The conclusion of the workshop is to report on market needs/reality to IEC SMB SG4 The SG4 can use, during it’s further work, the report to work on the roadmap,

15. IEC SMB SG4The deliverables – technical work • Identifying the TCs (technical committees) and SCs (subcommittees) concerned, • Analysing the current level of TCs/SCs (technical committees/subcommittees) activities and identify where future activity is required, • Defining a structure for the coordination of cross TC/SC work, where required, • Monitoring TC/SC work to highlight any overlap of work or potential inconsistencies.

16. IEC SMB SG4The deliverables – technical work • There is need for participation of • technical bodies responsible for products generating, distributing and consuming energy to analyze the impact of dc within their field TC82 TC13 TC2 TC88SC17B TC34 TC105 SC17D TC59 TC114TC20 TC61 TC22 TC62 TC23 TC69 SC32B TC96 SC37A TC100 TC64 TC108 TC94 Technical bodies represented in the SG4 Technical bodies represented in the SG4 via liaisons • technical bodies responsible for horizontal issues, to analyse the impact of dc within their field SG1 SG3 TC8 TC15 TC64 (IEC61140) TC73 TC77 TC89 TC106 TC109 TC112

17. IEC SMB SG4The deliverables – technical work – challenges • To further analyze the hazards linked to the use of dc and to find the appropriate technical body to do the standardization work (see next slide on Challenges) • To make a final report on the standardization needs (Road Map) • To receive reports on dc of the different technical bodies and analyze the progress and report to SMB

18. IEC SMB SG4The deliverables – challenges

19. Global standards – global solutions • If the market decides, dc is a solution on certain case, this will give us the opportunity to create a package of real international standards applicable in all major markets • To achieve this, there is need for contributions of experts specialized in • IEC type installations and • NEC type installations

20. Progress of the workondc in IEC • SG4: plans to have a workshop to define the market drivers for the use of dc – September 2011 • TC23 WG8: • has set together general rules for dc accessories: future TR61916-2 • is working on a standard for 5A-10A/400V dc plugs and SO • TC64: is analysing the installation rules to define the gaps in the standard where the use of dc is not covered • SC23E: is to start a discussion on protective devices for dc circuits

21. Thankyou