Test ReportReport No.: EED35I000361 Page 1 of 9

Customer : SHENZHEN YOUWIN OPTRONICS CO., LTDAddress : 6F, Building B, Jinmeiwei No.2 Industrial Park, Hi-tech Industrial Area, Guanlan,

Longhua new District, shenzhen City, China

Description of the submitted sample(s):Sample Name : LED High Bay LightModel/Type : YWHBFN-150Brand : YOUWINSample No. : 35I0361-01Ratings : 90-305 V AC, 50/60 Hz, 150 W, 5000 KTest Item : Total Luminous Flux, Luminous Efficacy, Zonal Lumen Density, Luminous

Intensity Distribution, Correlated Color Temperature, Color Rendering Index,Chromaticity Coordinate, Color Spatial Uniformity and Electrical Parameters

Sample Quantity : 1pcManufacturer : SHENZHEN YOUWIN OPTRONICS CO., LTDSample Received Date : Jun. 30, 2016Sample Tested Date : Jul. 01, 2016 to Jul. 02, 2016Test Requested : All test items were measured according to

IES LM-79-08 Approved Method for the Electrical and PhotometricMeasurements of Solid-State Lighting Products

Laboratory Note: The laboratory that conducted the testing items in this report has been accredited by theNational Voluntary Laboratory Accreditation Program (NVLAP LAB CODE: 200889-0), for IES LM-79 testingof SSL products. And the report must not be used by the client to claim product certification, approval, orendorsement by NVLAP, NIST, or any agency of the Federal Government.

Compiled by Reviewed by

Approved by Date Jul. 06, 2016

Supervisor Check No.: 2447682998

CENTRE TESTING INTERNATIONAL CORPORATION NO.1996, Xin jin qiao Road, Pudong New District,

Shanghai, 201206, China

Test ReportReport No.: EED35I000361 Page 2 of 9

Equipment list:

Test Equipment Equipment ModelEquipment

No.Calibration

DateCalibrationDue Date

Goniophotometer GO-R5000 ATTEELSH00105 --- ---Spectroradiometer HAAS-2000 ATTEELSH00105 --- ---

Standard Lamp D908 ATTEELSH00106 Jul. 20, 2015 Jul. 19, 2016Digital Power Meter WT210 BTTEELSZ10093 Jun. 17, 2016 Jun. 16, 2017Spectroradiometer HAAS-2000 TTF20120376 --- ---Integrating Sphere 2.0m ATTEELSH00007 --- ---

Standard Lamp D204 TTE20141711 Jul. 08, 2015 Jul. 07, 2016Digital Power Meter PF2010 ATTEELSH00011 Jun. 17, 2016 Jun. 16, 2017

1 Test ConditionAmbient Condition : 25.4Photometric Method : GoniophotometerColorimetric Method : Sphere-spectroradiometer, Gonio-spectroradiometerTested : 240 V AC, 50 HzStabilization Time : 2 hourTotal Operation Time including Stabilization : 2 hours and 35 minutesOrientation : Light downward

2 Test Method2.1 Requirements of Ambient ConditionThe ambient temperature in which measurements are being taken shall be maintained at 25 ± 1 , measuredat a point not more than 1 m from the SSL product and at the same height as the SSL product. Air flow aroundthe SSL product being tested should be such that normal convective air flow induced by device under test is notaffected.

2.2 Seasoning of SSL ProductFor the purpose of rating new SSL products, SSL products shall be tested with no seasoning. Therefore, noseasoning was performed.

2.3 Stabilization of SSL ProductBefore measurements are taken, the SSL product under test shall be operated long enough to reach stabilizationand temperature equilibrium. The time required for stabilization depends on the type of SSL products under test.The stabilization time typically ranges from 30 minutes to 2 or more hours for SSL product. It can be judgedthat stability is reached when the variation (maximum – minimum) of at least 3 readings of the light output andelectrical power over a period of 30 minutes, taken 15 minutes apart, is less than 0.5%.

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2.4 Photometric and Electrical Measurements - Sphere-spectroradiometer MethodAn EVERFINE CCD spectroradiometer and 2m integrating sphere was used to measure correlated colortemperature, color rendering index, and chromaticity coordinates. The 4 geometry, shown as following, chart(a), is used for measurement. Ambient temperature was measured at a position inside the integrating sphere.Electrical measurements including voltage, current, and power were measured using the Digital Power Meter.

2.5 Photometric and Electrical Measurements - Goniophotometer MethodAn EVERFINE Type C Model GO-R5000 Goniophotometer was used to measure total luminous flux and theintensity at each angle of distribution. The photometric distance is 2.1m for near-field measurement or 26m forfar-field measurement. Ambient temperature was measured at the same height of the sample mounted on theGoniophotometer equipment. Electrical measurements including voltage, current, and power were measuredusing the Digital Power Meter. Some graphics were created with Photometric Plus software.

2.6 Color Spatial UniformityThe characteristics of SSL products may be spatially non-uniform, the chromaticity coordinate shall bemeasured at two vertical planes (C=0°/180° and C=90°/270°) and at 10° or less intervals for vertical angle untilthe light output dropped to below 10% of the peak intensity. The averaged weighted chromaticity coordinatewas calculated from these points. The data was then analyzed to check for delta color differences of the u', v'chromaticity coordinates. The spatial non-uniformity of chromaticity, u'v', is determined as the maximumdeviation (distance on the CIE (u', v') diagram) among all measured points from the spatially averagedchromaticity coordinate. The geometry for the photometric measurement using gonio-photometer is shown aschart (b).

(a) (b)

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3 Test Results3.1 Summary

Input Voltage(V AC)

Input Current(A)

Input Power(W)

Power FactorTHD of Current

(%)

240.0 0.6460 150.11 0.9681 ---

Total LuminousFlux (lm)

Luminous Efficacy(lm/W)

Correlated ColorTemperature (K)

Color RenderingIndex Ra

Color RenderingIndex R9

17013.0 113.34 5108 83.6 11

ChromaticityCoordinate

x

ChromaticityCoordinate

y

ChromaticityCoordinate

u'

ChromaticityCoordinate

v’Duv

0.3423 0.3518 0.2095 0.4843 0.0012

3.2 Color Spatial Uniformity

Spatial non-uniformity of chromaticity u'v'

0.0034

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3.3 Zonal Lumen Density

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3.4 Luminous Intensity Distribution

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3.5 Luminous Intensity Distribution Data

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Photos of the Sample

Fig.1- Overall view

Fig.2- Back view

*** End of Report ***

This test report is effective only with both signature and specialized stamp. The result(s) shown in this reportrefer only to the sample(s) tested. Without written approval of CTI, this report can’t be reproduced except infull.