1 / 24

Organized by :

Organized by :. Hong Kong Certification Centre (HKCC) 香港認証中心. Speaker: Raymond Yue Certification and Surveillance Manger IRCA QMS auditor. 財經透視 一片光明？ 2013-10-20 18 時 00 分. 財經透視 一片光明？ 2013-10-20 18 時 00 分. LED Advantage. Light of the desired color Turn on instantly

rhona
Download Presentation

Organized by :

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Organized by:

  2. Hong Kong Certification Centre (HKCC) 香港認証中心 Speaker: Raymond Yue Certification and Surveillance Manger IRCA QMS auditor

  3. 財經透視 一片光明？ 2013-10-2018時00分

  4. 財經透視 一片光明？ 2013-10-2018時00分

  5. LED Advantage • Light of the desired color • Turn on instantly • Solid epoxy lens case , non destructive • No sudden burn out but …. dimming • Long life span長效能

  6. Product conformity certification scheme for LED lighting products, HKEIA • Scheme owner – HK Electronics Industries Association (HKEIA), a voluntary scheme in Hong Kong • Scheme open to : government bodies, manufactures, retailers, users…. • Current major users:, • Operate under • ISO/IEC 67-System 5 certification module

  7. Product certification system ISO/IEC Guide 67 - System 5 of product certification system Initial testing Factory assessment production process and quality system Surveillancefor every 12 months samples from open market or supplier’s stock or both -市場 /工廠取得樣品 -生產與品質系統 的後續監督其持繼的符合性 生產 與品質系統評估 ＋ 型式測試 ＋

  8. Certification Scheme for LED Lighting Three technical Criteria covered • Safety IEC 60598-1 Luminaires -General safety IEC62471 Photobiological safety • EMC CISPR 15 / EN 55015 IEC 61000-3-2 IEC 61000-3-3 Surge immunity test • Performance IES LM-79,IES LM-80, and IES TM -21, Thermal test

  9. Certification Scheme for LED Lighting Surveillance assessment  once 12 month • consists of the assessment of the production process, QMS • testing of samples from the factory or the open market, or both Purpose • Ensure production process in consistency manner • Ensure correct and consistent use of certified components materials, construction , etc. • Measurement on lighting output, color temperature, color rendering index and output lumen (IES LM-79) • Continuous conformity持續符合性

  10. Certification Scheme for LED Lighting Product Scope in the Scheme : LED Bulk-head LED Down light LED Flood light

  11. Enemy of all LEDs • LED (semiconductor diodes, electronic devices that permit current to flow in only one direction, the p-n junction temperature) • The majority of LED failures are caused by excessive or long-term high temperature. Elevated junction temperatures can cause a reduction in light output, degradation of chromaticity色度, performance, life expectancy, and reliability • Enemy of all LEDs – Heat

  12. Drive current If • Operating LEDs at higher than recommended rated currents, the long-term performance of degradation (lumen maintenance )by creating higher junction temperature Overdriving impact on lumen maintenance (2003, Rensselaer Polytechnic Institute )

  13. Drive current If • As the forward current is reduced (red line progressing to the blue line), the light output of an LED increase (If= forward current) The relationship between forward voltage and current of LEDs

  14. Junction temperature (115,000-30,000)hr =73% shorten Doubling the junction temperature of an LED from 75C to 150C can shorten its life by 73%. Elevated operating temperatures will reduce the light output for a given forward current and operating ambient temperatures (courtsey of CREE)

  15. Typical LED package Rthermal j-air thermal resistance between the junction and ambient

  16. Mathematical Model Tj = TA + (Rthermal j-a Pd) Tj = Junction temperature (°C) TA = Ambient temperature (°C) Rthermal j-air = Thermal resistance between the LED junction and ambient = Tc + Tb + Tth (°C/W) Pd = Power dissipated by LED = Forward voltage x Forward current (Vf x If)

  17. Junction temperature • Cooler LEDs produce more light than hotter LEDs • Use recommended package through data sheet • Airflow • Thermal management is able to control the junction temperature

  18. Certification Scheme for LED Lighting－Performancerequirement－ Thermal test at 40C and humidity at 98% temperature measurement on: (a) LED junction within the module or array • Casing temperature of the LED driver

  19. Product Certification產品認證 Product certification is an activity by which a third party gives written assurance that a product(including process and service) fulfils specified requirements. ISO/IEC guide 67:2004

  20. 鏗鏘集 識食有機 2013- 6- 17 http://www.youtube.com/watch?v=9lS4HN0ZqWM@13.07@18.50 Supplier Consumer Consumer HKCC_協助建立信心產品 (-香港貿發局) Supplier

  21. Endorsement of manufacture-ability: of the product maintainability, construction, material and component use such that the quality of the product based on internationally established standards ISO standards HKCC-協助建立信心產品 (-香港貿發局)

  22. Product differentiation will stand out: • Acceptance by the market and contribution to achieve national legal compliance, and regional/international trade obligations－ ISO Regional workshop on Certification, India 2004 • Bears out those societal significant concerns e.g. safety, health or environmental protection － ISO/IEC Guide 67:2004 鏗鏘集 識食有機 2013- 6- 17

  23. Thank you Certification enquiry :www.hk-cc.hk 電: 2661 2083 (趙小姐)

  24. END

More Related