technicalbrief for led road lighting oct 2013

8/20/2019 TechnicalBrief for LED Road Lighting Oct 2013

1/2

How to construct a technicalbrief for LED road lightingproject.The existence of globally recognized LED product standards makes it easier to ascertain the competence of competing

LED products. This is especially useful when calling for tender of a major road lighting project. This section clearlydescribes the recommended elements (e.g. CIE compliance) to be included in the tender to ensure optimal light

conditions.

The template is available by contacting your local Philips representative.

Energy efcient LED streetlight specications

The Contractor shall furnish and install the complete LED streetlight luminaires as described in the Tender Specications. The specic wattages of

the LED luminaires are to be indicated in individual luminaire specications.

• I LED Streetlight Luminaire Housing

The luminaire shall have a full die cast housing to provide adequate rigidity and strength and also ensure proper heat dissipation. The luminaire

housing shall have separate Driver and LED lamp cavity to ensure cooler operation of LED lamps and good electrical separation. The optical LED

compartment shall have a thermally hardened glass cover and high quality silicon gasket system. The glass cover shall be tightly secured with the

housing. The complete luminaire shall be rated for IP 66 (Ingress Protection). The housing shall feature highly reective components and lms toincrease light output. The weight of the luminaire shall not be more than stipulated below:-

– Up to 10,000 lumens < 7 kg



• II Optics

The luminaire shall have exible optical system to achieve lighting parameters, as stipulated by CUSTOMER NAME for various kinds of road

from M1 to M6. The luminaire shall offer a composite system efcacy of at least 90 Lumen/Watt and a lumen package of up to 30,000 lumens.

The luminaire shall use high efciency LED and optics system to achieve at least XX% energy savings compared to present High Pressure

Sodium road-lighting system used by CUSTOMER NAME. Specially designed lens system with unique inner and outer prole for high efciency

LED to ensure maximum spacing between the poles and cover higher road widths. Multi layer optics design to ensure adequate luminance and

illuminance uniformity in the unlikely event of individual LED failure. The luminaire should offer choice of narrow beam, medium beam and wide

beam light distribution.

The optical lens system should ensure:

– Long life with no discoloration (UV Protection).

– White painted circuit board to have high reectivity for maximum light output.

• III Future Compatibility

The luminaire shall be fully compatible with future LED upgrades when they become available. It shall have a modular design to upgrade/replace

with new LED modules or LED drivers at site. All electronic components/drivers shall be mounted on a separate gear tray with tool-less access

and replacement. The luminaire shall have space available inside for communications antenna or equipment to be integrated into the luminaire for

future tele-management control system implementation. Evidence showing tele-management capability shall be provided.

Glossary IEC 60598 test report

This standard species general requirements for luminaires, incorporating electric light sources for operation from supply voltages up to 1000 V.

The requirements and related tests of this standard cover: classication, marking, mechanical construction and electrical construction.

EMC test report

EMC for electrical/electronic items intended for lighting purposes is covered by the standards EN55015 (EMC emissions) and EN61547 (EMC

Immunity). These standards specify various emissions and immunity test to be carried out on the product either through radiated means or by

conduction along the signal or power supply cables. In particular, EN55015 calls for magnetic eld emissions and insertion loss measurements on

certain types of devices.

Photo-biological test report

This test report covers the optical radiation safety of electrically-powered sources which are emitting light in the spectral region 200-3000nm.

Whilst standards can vary between geographies, they should show high commonality to the international standard IEC62471:2006.

LED Chip IESNA LM-80 Test Report

The LED Chip IESNA LM-80 Test Report with a prediction/extrapolation as per TM-21 should be available from the LED Chip Manufacturer.

This test only refers t o chip level performance. This is different than the LM79 report which gives an overview total luminous ux, luminous intensity

distribution, electrical power, efcacy (lumens per watt delivered), and color characteristics (chromaticity, CCT, and CRI).

Vibration test report

The vibration test is executed in accordance with IEC60598 and takes into account vibration over all three axes.

Salt Spray test report (500 hours)

The salt spray test is a standardized test method used to check corrosion resistance of a xture and is dened by ISO9227.

Photometric les

The photometric les give an overview on the optical performance of t he xture and must be used to design the optimal road lighting set-up.

LED Driver test reports on Safety and Performance

The driver should be tested on safety and performance by EN61347 and EN62384 respectively.

Lab test report

To make sure the test reports are from a reliable source and the tests are executed in the right way, make sure the lab is accredited and c an

provide an ISO17025 test report.

CIE115

The CIE115 is the most important and leading application standard. It provides design guidance, given the type of road, usage and other relevant

parameters. Philips is one of the members of the CIE standardization board and can help you in designing the optimal road lighting set-up.

Glare

Glare occurs where there is discomfort or a reduced ability to see caused by a light s ource that is too bright compared with its background. Glare

can be reduced by dimming the source, blocking the direct view or increasing the background level of luminance.

Color Rendering Index (CRI)

CRI, Color Rendering Index shows how well a light s ource reveals colors. It compares the light source such an LED with a reference standard such

as daylight or a lament lamp. Until recently, the comparison was based on eight standard colors and known as Ra8. An alternative for light sources

uses 14 colors, Ra14. This has six additional saturated colors and gives a better indication of the LED’s ability to reproduce colors. A good LED

road lighting system has a CRI > 70.

Luminaire Lumen depreciation Test Report for 1000/2000/3000 hrs

The luminaire lumen depreciation at a certain operating temperature tested to LM-79 standards should be available. The LM79 report which gives

an overview of lumen depreciation, luminous ux, luminous intensity distribut ion, electrical power, efc acy (lumens per watt delivered), and color

characteristics (chromaticity, CCT, and CRI) on a luminaire level for 1000, 2000 & 3000 hours.

8/20/2019 TechnicalBrief for LED Road Lighting Oct 2013

2/2

• XIII LED Chip Specications

The luminaire should have LED chip from following acceptable manufacturers:-

– Philips Lumiled

– Cree

– Nichia

– Osram

• XIV Ambient Temperature

The luminaire shall be suitable for ambient temperature range of between -30 to 45 degrees Celsius. 3rd party IEC 60598 Test Report shall be

measured/corrected for Ta = 45 Degrees Celsius.

• XV Manufacturers Declarations and Submittals

Following manufacturer declarations and submissions should be provided with the tender submission:-

S/No Parameters Technical Specications Documents to be provided

1 System Power Not more than XXXW +/-5W Manufacturer’s Declaration

2 System Efcacy > 90lm/W Manufacturer’s Declaration

3 System Voltage 220V to 240V 50Hz Laboratory Test Report

4 Power Factor Not less than 0.90 Laboratory Test Report

5 Surge Protection > 10KV Manufacturer’s Declaration

6 LED Driver Programmable for Dimming with:-

– 1-10V DC

– DALI – On board standalone program

Manufacturer’s Declaration

7 Lumen Maintenance L70 at 50,000 hours or better LM80 Report

8 Colour Temperature Neutral White ~ 4000K +/- 500K

Warm White ~ 3000K +/- 500K Manufacturer’s Declaration

9 Colour Rendering Index 70 +/- 10 Manufacturer’s Declaration

10 IP Rating > IP66 without glue Laboratory Test Report

11 IP Rating > IK08 Laboratory Test Report

12 Cover Tempered Glass Cover Manufacturer’s Declaration

13 Housing High Pressure Die-Cast Aluminum with heat management

system

Manufacturer’s Declaration

14 Maintenance Tool-less Driver Cavity Opening Tool-less Gear Tray Change Manufacturer’s Declaration

15 Tele-management Controls Integrated Antenna or communications equipment into

luminaire housing

Manufacturer’s Declaration & Evidence to show capability

16 3rd Party Test Report Laboratory facility must be accredited according to

ISO17025 and recognized by ILAC/APLAC for testing of

LED products.

– IEC 60598 Report (EN60598-2-3)

– EMF Test (IEC 62493)

– LM 80 LED Test Report

– Lumen Depreciation Test Reports (up to 3000 hours)

– EMC Test Report (EN55015, EN61547, 61000-3-2)

– Photo-biological Safety Test Report (EN62471) – Factory Certicates (ISO14001, ISO9001, OHSAS18001)

– Certicates for Test Laboratory (ISO17025)

17 3rd Party LED Driver Test Report Laboratory facility must be accredited according toISO17025

– EN 61347-1, -2-13 Test Report – EN 62384 Test Report

18 Additional Test Reports Manufacturer’s Test Report – Salt Spray Test Report

(Minimum 500 hours, Natural Salt Spray) – Vibration Test Report

– Road Lighting Simulations based on given congurations

• IV Surge Protection

The proposed luminaire shall have an in-built 2-stage surge protection system to protect (1st stage) the electronic driver and (2nd stage) the LED

module with a minimum surge protection rating of 10KV.

• V Ingress Protection (IP) and Impact Resistance

The luminaire shall have Full IP 66 protection to ensure long reliable performance and to minimize maintenance requirement and an Impact

resistance of IK 08. No chemical glue is to be used as that may cause breakdown of water-proof and dust-proof seal.

• VI Maintenance

The Driver compartment cavity and gear tray shall be designed with tool-less access for maintenance and replacement.

• VII Mounting

The mounting of the luminaire will be in axial orientation through Ø 48-60mm sidearm.

• VIII Thermal Management

Managing thermal properties in LED luminaires are most critical to ensure optimum performance of LEDs and reliability of the system. The

housing shell under the circuit board should be specially designed to ensure perfect contact between the board and the luminaire housing for

efcient heat dissipation. Only Metal Core PCBs are to be used to maximize heat transfer process and to offer reinforced electrical insulation via

dielectric layer. The Metal Core PCB should be mounted on the housing using a highly efcient thermal interface material. Use of Silicon glue is

not acceptable. The housing over the Driver compartment cavity shall have adequate surface area to ensure fast heat dissipation.

• IX Color Rendering Index and Color Temperature

The luminaire should have a minimum color rendering index (Ra) of 70+/- 10 and a color temperature of 3000K to 4000K for maximum

efciency. The LED shall have a color consistency within 5 SDCM (standard deviation of color matching) as dened by McAdam. The color

temperature variation of the LEDS should be restricted as per ANSI C78.377A with CCT variation limiting within +/- 500K.

• X Use ful Life Hours

The LED luminaire shall be designed for lumen maintenance of L70 or 70% at the end of useful life at ambient temperature of 35°C. Thecomplete luminaire shall have a useful life of 50,000 burning hours. The luminaire including the driver will include a warranty of 3 years against

manufacturing defects.

• XI Standards Conformity

The luminaire should fully conform to following specication:-

– IEC 60598-2-3 – Part 2: Particular requirements: Section Three – Luminaires for road and street lighting.

– IEC 62471 – Photo-biological safety of lamps and lamp systems.

– IEC 62493 – Assessment of lighting equipment related to human exposure to electromagnetic elds.

– EN 55015: 2006 and 2007 – Limits and methods of radio disturbance characteristics of electrical lighting.

– EN 61547:1995 / +A1:2000 – Equipment for general lighting purpose EMC immunity requirements.

– EN 61000-3-2:2006 – Limitation of harmonic current emission.

– EN 61000-3-3:2008 – Limitation of voltage uctuation and icker.

• XII LED Driver Specications

The LED driver shall be designed to operate large array of high power LED’s through current controlled output. The driver shall be suitable for

nominal 220V-240V 50Hz mains supply. The LED driver shall have an efciency of at least 90%. The LED driver shall incorporate multiple control

interfaces for dimming capability. It shall enable DALI, & 1-10V DC interface dimming control. It shall also have a programmable feature to allow

pre-programming of step dimming lighting levels based on the ON time. The LED driver shall fully conform to following specications:-

– EN61347-1 - General and safety requirements.

– EN61347-2-13 - Particular requirements for DC or AC supplied electronic control gear for LED modules.

– EN62384 - DC or AC supplied electronic control gear for LED modules.