Luminaires – Module 2 Technical Aspects

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Luminaires – An Overview: Facts, Basics and Considerations - Module 2

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Luminaires – Module 2 Technical Aspects

  1. 1. Luminaires – An Overview:Facts, Basics and Considerations Target Audience: Facility managers, Procurement managers, Technical managers, Maintenance managers and General Lighting enthusiasts Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012
  2. 2. Luminaire Overview – ObjectivesThe purpose of this outline is to provide an overviewand to familiarize the decision maker with the keyconsiderations when evaluating a lighting solutionLuminaire Overview Topics:a. Luminaire classificationb. Luminaire technical aspectsc. Luminaire functional aspects Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 2
  3. 3. Module 2Luminaire Technical Aspects Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012
  4. 4. Luminaire – Technical AspectsAs with the infamous saying of Wilhelm Leibniz that ”… a lionbe can spotted by it toenail…”, so a quality luminaire can bespotted by its technical attributes. A given luminaire carries several types of technical information that is to be overviewed in this section while addressing relevant IEC standards:  IP Rating (Ingress Protection Code)  IK Rating (Mechanical Impact Code)  tC max (Operating Temperature)  Mounting Codes  IEC Standards Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 4
  5. 5. IP RatingIP ratings are international designed symbols to numerically rate anelectrical product on the level of protection its enclosure provides.By assigning different number codes, the products degree ofprotection can be identified quickly and easily.Example: IP 54 5 - describes the level of protection from solid objects 4 - describe the level of protection from liquidsThe IP code is defined in standard IEC 60529 Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 5
  6. 6. IP Rating, 1’st Numeral: Solid ObjectsFirst IP Luminaire Protected againstNumeral description0 Not protected1 Hand protected Ingress of solid object > 50 mm diameter, shall not fully penetrate2 Finger protected Ingress solid object > 12.50 mm diameter, shall not fully penetrate3 Tool protected Ingress solid object > 2.50 mm diameter, shall not fully penetrate4 Wire protected Ingress solid object > 1 mm diameter, shall not fully penetrate5 Dust protected Harmful dust accumulation6 Dust tight No ingress of dust Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 6
  7. 7. IP first numeral IllustratedLuminaire with low IP first numeralwould suffer from dust and “deadbugs” accumulated at the base of theprotective lens of the luminaire. Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 7
  8. 8. IP Rating - Second Numeral: LiquidsFirst IP Luminaire Protected againstNumeral description0 Not protected1 Drip protected Vertically falling drops shall have no harmful effects2 Drip protected when Vertically falling drops have no harmful effects when the tilted enclosure is tilted up to 15° vertically3 Rain/Spray protected Water sprayed at an angle up to 60° degrees vertically shall have no harmful effects4 Splash protected No harmful effects when water splashed in any direction5 Water jets protected Water projected in jets against the enclosure from any direction shall have no harmful effects6 Powerful water jets Water projected in powerful jets against the enclosure from protected any direction shall have no harmful effects7 Water tight No harmful effects when the enclosure is temporarily immersed 1 meter in water under defined conditions8 Pressure water tight Enclosure is continuously immersed in water under conditions that are more severe than for number 7 Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 8
  9. 9. Mechanical IK RatingThe IK rating specifies the level of mechanical protection theenclosure provides and is measured in joules (J).The IK code is defined in standard IEC 622662 Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 9
  10. 10. IK Rating: Mechanical impactIK Impact energy Equivalent drop mass and heightNumber00 Not protected01 0.15 joules Drop of 200 g object from 7.5 cm height02 0.2 joules Drop of 200 g object from 10 cm height03 0.35 joules Drop of 200 g object from 17.5 cm height04 0.5 joules Drop of 200 g object from 25 cm height05 0.7 joules Drop of 200 g object from 35 cm height06 1 joules Drop of 500 g object from 20 cm height07 2 joules Drop of 500 g object from 40 cm height08 5 joules Drop of 1.7 kg object from 29.5 cm height09 10 joules Drop of 5 kg object from 20 cm height10 20 joules Drop of 5 kg object from 40 cm height Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 10
  11. 11. Luminaire Operating Temperature – tC maxtC max defines the maximum operating temperature where warranty holds forthe systemExample: tC 70°C / 158FtC label marks the temperature sensing or measurement point on a Luminaire.This point is marked on the luminaire with a temperature degree number.Most Light systems require a drive or gear which is an electronic component. Thesecomponents generally experience functional wear out in heat above that they had beendesigned for.Example:Mounting a LED system with tC max of 70°C/158F in a very hot manufacturing environmentlike a chocolate factory will probably result in system life of about 8% only, eg 3,000 hoursinstead of specified 35,000 service hoursMounting considerations• Operate all electronic components, including LED, drivers at lower temperatures to achieve a longer service life.• Consider the following: (a) System thermal requirements (b) Proper heat dissipation Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 11
  12. 12. Luminaire – Mounting marks Luminaire suitable for direct mounting on non- combustible surfaces only Luminaire suitable for direct mounting on normally flammable surfaces when thermal insulation may cover the luminaire Luminaire suitable for direct mounting on normally flammable surfacesLight-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 12
  13. 13. Luminaire – Electrical protection classThere are 3 common IEC 61140 electrical protection classes to mark luminaire safety requirements Class I – Luminaires in this class are electrically insulated and provided with earth safety connection. The earth/grounds connects exposed metal and prevents live shock in case of fault. Class II – Luminaires in this class are designed that exposed metal parts cannot become live and safety connection is not required to electrical earth/ground. Class III – Luminaires in this class of electrical protection rely on SELV, Safety Extra Low Voltage supply less than 50V. This class is not provided with electrical earth connection. Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 13
  14. 14. Luminaire – StandardsStandard IEC 60598 specifies general requirements for luminaires, incorporating variousaspects of light systems addressing operation for voltage up to 1000 V. The standardaddresses classification, marking, mechanical construction and electrical construction.Fixtures for specific locations have specific standards like – Blast Proof, Emergency Lighting, Street and HighLighting, Cold Storage Lighting, Underwater and more.In many cases luminaries comprise of the fixture and the ballast. There are usually ballast specific standards thataddress Safety and Electro Magnetic Emission.IEC 61347 – Low Voltage Directive (LVD) standardStandard IEC 61347 specifies safety requirements for electronic control gear for use on AC and DC supplies up to1000V at 50 Hz or 60 Hz. Refer to standards IEC 60081 and IEC 60901 for other fluorescent lamps for high-frequency operation. The standard addresses test conditions when dimming; safety aspects of constructionrequirements and limits for HF leakage currents.IEC 61347 Annex B defines general and safety requirements applicable to thermally protected lamp control gear.IEC 61347 Annex C defines general and safety requirements for electronic lamp control gear with means ofprotection against overheating.IEC61000-3-2 - Electromagnetic Compatibility (EMC) - Low-Frequency StandardsStandard specifies limitation of harmonic components of the input current impressed on the public low-voltagesupply system.EN 55015 - Standard specifies limits and addresses both the Radiated Emissions and Conducted Emissions,defines limits of radio disturbance characteristics of electrical lighting and similar equipment. Radiated emissionsare measure in db against the norm as defined in the standard. Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012 14
  15. 15. The EndLuminaires by Light-Ref.com Light-Ref.com The unbiased lighting reference source http://www.light-ref.com © 2012

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