927.1 General Description
This section includes the requirements for LED (Light Emitting Diode) luminaires.
927.1.01 Related References
A. Standard Specifications Section 680—Highway Lighting B. Referenced Documents ASTM B117 - Standard Practice for Operating Salt Spray (Fog) Apparatus ASTM D1654-08 (or latest), Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments ANSI C136 - American National Standard for Roadway and Area Lighting Equipment: ANSI C136.2 - Dielectric Withstand and Electrical Transient—Immunity Requirements ANSI C136.25 - Ingress Protection (Resistance to Dust, Solid Objects and Moisture) for Luminaire Enclosures ANSI C136.31 - Luminaire Vibration ANSI C62.41 - Surge Immunity Testing Equipment CISPR 15 - Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment CISPR 22 - EN 55022 EMC Standard FCC 47 Sub Part 15 - Electronic Code of Federal Regulations e-CFR IES LM-79 - Electrical and Photometric Measurements of Solid-State Lighting Products IES LM-80 - Measuring Lumen Maintenance of LED Light Sources UL 1598 - UL Standard for Safety Luminaires
927.2 Materials
Use luminaires that are complete, including driver, LED, surge protection device (SPD), and associated hardware and wiring.
927.2.01 Luminaires
A. Requirements Ensure that LED luminaires meet the following requirements: 1. Certified by Nationally Recognized Testing Laboratories (NRTL) as defined by the U.S. Department of Labor. The testing laboratory must be listed by OSHA in its scope of recognition for the applicable tests being conducted as required by this specification. A list of recognized testing labs for products sold in the United States may be found on the U.S. Department of Labor’s web site: 2. Certification mark by a NRTL as being in compliance with UL 1598, 8750 and suitable for use in wet locations. 3. LED light source(s) and driver(s) are RoHS compliant. 4. ANSI C136.25 Ingress Protection (IP) rating of IP66 or greater is used for all luminaires. 5. Comply with Electro Magnetic Interference (EMI) requirements as defined by FCC 47 Sub Part 15; CISPR15, CISPR22 Class A (120Vmin). 6. Tested according to the Illuminating Engineering Society of North America (IESNA) LM-79 and LM-80 a. Supply testing and data in compliance with LM-79 from a National Institute of Standards and Technology (NIST) National Voluntary Laboratory Accreditation Program (NVLAP) accredited laboratory. 7. Listed by Design Lights Consortium (DLC) in its QPL. Contractor shall submit a copy with submittal documents for verification. The documentation submitted for the photometric distribution shall correspond to the items listed by the NRTL. 8. Documentation supporting any U.S. origin claims for the product, in accordance with Federal Trade Commission (FTC) Guidelines shall be furnished. B. Housing Ensure the housing for LED luminaires meet the following requirements: 1. Aluminum housing shall be die cast and A360 or A380 compliant. 2. Luminaire housing is to be a completely sealed optical system with a (IEC) (IP) rating of 66 or greater. 3. Anodized and/or painted or powder coated with a minimum thickness of 2.0 mil to increase corrosion resistance. Finish color to be gray unless otherwise specified on Contract. Luminaire finish to be tested to withstand a 2000-hour salt spray test in accordance with ASTM B117. The luminaire coating system shall exceed a rating of six per ASTM D1654 after 2000 hours of testing per ASTM B117 4. All hardware on the exterior of the housing including cover and latch to be stainless steel, zinc or steel with zinc alloy electroplate and chromate top coat. 5. Roadway luminaires are easy to open when properly mounted or when sitting on its top side when placed on the ground without the use of tools, unless specifically approved in writing. Ensure underpass luminaires are vandal-proof. 6. Have readily accessible internal parts. 7. Provisions for a slip fitter type mounting on nominal 2 in. (2-3/8” OD) pipe brackets or as indicated in ANSI C136.37. 8. Slip fitter mount is to allow a minimum 4 in, of the tenon on the pole or arm to be inserted in the luminaire mounting assembly. a. The mounting assembly is to permit any necessary adjustment to orient the luminaire with the roadway for proper light distribution. The luminaire fitter assembly must be approved by the Engineer. 9. The total weight of luminaire(s) and accessories in addition to the wind on the effective projected area (EPA) do not exceed the load capacity of the pole and arm. 10. Compliant with American National Standard (ANSI) C136.31 Roadway Lighting Equipment - Luminaire Vibration for both normal applications and bridge and overpass applications. 11. Provide luminaires with a flat area on the top of the housing to allow a level to be used for proper orientation of the luminaire, or supply luminaires with an integral bubble level. Luminaires are to be installed parallel with grade of roadway below. 12. Provide luminaires that are capable of accommodating a photo-electric control receptacle (PECR). When used (see Contract for applicability) the PECR to be rotatable up to 359 degrees. Housing is to provide 360 degree stop to prevent the internal twisting of PECR wire assemblies resulting in potential electrical short. Seal the housing effectively and permanently around the PECR to prevent moisture ingress to the luminaire. 13. Designed to allow water shedding and prevent accumulation of debris on the luminaire or within the external cooling fins. 14. Passive cooling method to be employed with no energized or moving components to manage thermal output of LED light engine and power supply. A. Electrical Requirements Ensure that LED luminaires meet the following electrical requirements: 1. Electronic components capable of fully operating in a temperature range -40ºC to +40ºC (-40º F to 104°F). 2. Have an integral power supply. 3. Equipped with 7 pin photocell receptacle, even if unused. All wires shall be properly terminated and all pins connected so future wiring inside the fixture housing is not required. 4. Equipped with a power supply that operates within the voltage range specified in the Contract. 5. Equipped with a power supply that has a power factor of .90 or greater at full load. 6. Equipped with a power supply that has total harmonic distortion of 20 percent or less at full load. 7. Provide lumen output sufficient to meet the lighting criteria as specified in the Contract. 8. Equipped with an isolated power supply output for units under 100 watts. 9. Equipped with a power supply that has overheat protection and temperature foldback feature in driver such that as driver temperature approaches its operational limit, driver output is incrementally reduced until driver critical temperature stabilizes or reduces. As driver temperature returns to an acceptable value, driver output will return to set value. 10. Equipped with a power supply that is self-limited short circuit protected and over load protected. 11. Equipped with a power supply that is terminated with quick disconnect wire harnesses for easy maintenance. Wire nut termination is not acceptable. 12. Equipped with a terminal block for terminating pole wiring to the luminaire. The terminal block is to be a 3 station, tunnel lug terminal board that accommodates up to #8 AWG wire. 13. Have a life rating on all electrical components of 100,000 hours or greater when operating at a continuous 25°C ambient. 14. Electrical components protected per ANSI standard C136.2; test waveform is to be as described in ANSI C62.41.2; and type Category C environments as defined in ANSI C62.41.1. 15. Equipped with a UL-labeled, 3-wire surge protective device (SPD) that provides common and differential mode protection and an inductive filter circuit that reduces the amount of energy passed through to the electronics during a surge event. SPD to be thermally fused and have failure mode such that luminaire is off if SPD fails. SPD to provide ANSI C136.2-2015 Extreme (20kV/10kA) level of protection for the entire luminaire. The SPD shall be wired in series with the driver or as required to disconnect power to the luminaire in the event of SPD failure. B. LED Performance Requirements Ensure that LED luminaires meet the following performance requirements: 1. Fully operate in a temperature range -40ºC to +40ºC (-40ºF to 104°F). 2. Over its life, the luminaire shall experience no more than a 15% reduction in LED’s lumen output due to the operating temperature of the luminaire, compared to the LED’s lumen output when it is operating at 25°C. 3. Shall deliver no less than an average 80 percent of initial delivered lumens after 100,000 hours of operation when operated at 25°C. 4. Deliver a minimum rated life of 70,000 hours when operated at 25°C (77° F). 5. Deliver a luminaire efficacy of a minimum of 100 lumens/watt. 6. Meet the Chromaticity requirements as follows: a. The colors conform to the following color regions based on the 1931 CIE chromaticity diagram. 1) Color Temperature: 4000K (3710-4260K) 2) Color Rendering Index (CRI): greater than or equal to 70 b. Intensity and Chromaticity as stated above must be confirmed by an independent test lab. E. Optical Requirements Ensure that LED luminaires meet the following optical requirements: 1. The light distribution pattern at the road surface is to have an evenly dispersed appearance. 2. Provide the IES pattern as identified on the Contract. F. Fabrication General Provisions 101 through 150. G. Acceptance 1. General Provisions 101 through 150. 2. Each Luminaire to be evaluated by the Department for proper operation under a 30-day burn-in period after installation. If any failures are found in the first 30 days after installation, the Luminaire is to be replaced at no cost to the Department and be evaluated for another 30 days from the time of its installation. The system is acceptable when all luminaires pass the 30-day burn-in period with no failures. H. Materials Warranty 1. General Provisions 101 through 150. 2. The entire Luminaire assembly including material, finish, workmanship, power supply, LED modules and lumen maintenance is to have a minimum of ten (10) year warranty from the date of installation. On-site replacement includes transportation, removal and installation of new products. Finish warranty includes deterioration such as blistering, cracking, peeling, chalking or fading. 3. The warranty must be transferrable from the contractor to the Department and to the final local jurisdiction having responsibility for operation and maintenance.
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