Transcript Product Certification
Organized by :
P1
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 Solid epoxy lens case , non destructive No sudden burn out but …. dimming Long life span 長效能
• • •
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
Product certification system
ISO/IEC Guide 67 -
System 5
of product certification system
Initial testing
型式測試 ＋
Factory assessment
production process and quality system 生產 與品質系統評估 ＋
Surveillance
12 months for every 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
Certification Scheme for LED Lighting
Three technical Criteria covered • Safety IEC 60598-1 Luminaires -General safety IEC62471 • EMC Photobiological safety 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
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 1. Ensure production process in consistency manner 2. Ensure correct and consistent use of certified components materials, construction , etc.
3. Measurement on lighting output, color temperature, color rendering index and output lumen (IES LM-79) 4. Continuous conformity 持續符合性
Certification Scheme for LED Lighting
Product Scope in the Scheme : LED Bulk-head LED Down light LED Flood light
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 expectancy, and reliability 色 度 , performance, life • Enemy of all LEDs – Heat
• Drive current I
f 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 )
• Drive current I
f As the forward current is reduced (red line progressing to the blue line), the light output of an LED increase (I f = forward current) The relationship between forward voltage and current of LEDs
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)
Typical LED package
R thermal j-air thermal resistance between the junction and ambient
Mathematical Model
T j = T A + (R thermal j-a T j = Junction temperature ( ° C) T A = Ambient temperature ( ° C) P d ) R thermal j-air = Thermal resistance between the LED junction and ambient = T c + T b + T th ( ° C/W) P d = Power dissipated by LED = Forward voltage x Forward current (V f x I f )
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
Certification Scheme for LED Lighting
－
Performance requirement
－ Thermal test at 40C and humidity at 98% temperature measurement on: (a) (b) LED junction within the module or array Casing temperature of the LED driver
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
鏗鏘集 識食有機 2013- 6- 17 http://www.youtube.com/watch?v=9lS4HN0ZqWM @[email protected]
Consumer Supplier Consumer HKCC_
協助建立信心產品 貿發局
) (-
香港
Supplier
Endorsement of manufacture-ability:
of the product maintainability, construction, material and component use such that the quality internationally standards of the product established based standards
HKCC-
協助建立信心產品
(-
香港 貿發局
)
on ISO
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
Thank you
Certification enquiry :www.hk-cc.hk
電 : 2661 2083 ( 趙小姐 )
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