How LM-79 testing can help assess LED luminary quality and performance?

How LM-79 testing can help assess LED luminary quality and performance?

We all believe in buying quality products. Discovery of LED is boon to our world. LED has replaced all the traditional lightning systems because of its quality, life and performance.  Manufacturers are switching from manufacturing traditional lightning to produce LED lighting. Many of the manufacturers are making unsubstantial claims regarding colour quality, luminous flux (lm), efficacy (lm/w) and general quality. This can Lead to LED degradation. To ensure quality, a series of test has to be performed on LED luminaries for its long term survival. This is served by LM 79 test method. It is not only the LED but the whole SSL has to qualify all the tests.

For special purpose, it may be useful to determine the characteristics of SSL products when they are operated at other than standard conditions described in the approved method.

Photometric testing includes measurements of total radiant flux, luminous flux, Efficacy (lm/w), chromaticity, correlated color temperature (CCT), and color rendering index (CRI), Light Intensity Distribution (cd). Radiant flux, expressed in watts, is a measurement of the total power of electromagnetic radiation (light) emitted from the luminary or lamp. Luminous flux is a weighted measurement based on human visual perception.

The above measured parameters help to access the LED luminary quality and performance.

ITC india Pvt Ltd is a leading company to test LM 79, company has both the highly accurate equipments “The Integrating Sphere” & “  The Goniophotometer” installed at its premises.

ITC india is a NABL accredited lab having full scope of LM 79( certificate no. T-3510.)

If you’re Buyers Demanding for LED Luminaries Lamps Testing– Contact Now!

Wish this blog post will be help. If you have any other questions, please feel free to contact us. ITCIndia team looking forward work with you and get better together!

Mr. Puneet Sharma | Call: 08196980555 | E-mail: ITCIndiaOne@Gmail.Com

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LM 79 Testing For LED-SSL Luminaires

LM 79 testing by NABL - Accredited lab in just 5 days‎

If you are looking for LM-79 Testing for LED lights, ITC India One of the Best NABL Accredited Laboratory provide LM-79 Testing for LED Lights includes accreditation for SSL Solid State Lighting Luminaires, Total Flux Measurements (Luminous Efficacy) & Solid State Lighting Luminaires, Luminous Intensity Measurements.

ITCIndia “Institute of Testing and Certification India Pvt. Ltd” are a leading testing lab having a NABL accreditation under ELECTRICAL, ELECTRONICS and PHOTOMETRY testing with certificate no. T-3509, T-3570 and T-1811. ITCIndia Lab is following the procedure as required by International Standard IEC 17025 and is already certified for ISO/IEC 17025.

What is LM-79 Testing?

It is the IESNA certified method for the Electrical and Photometric Measurements of SSL Solid State Lighting. It measures an LED luminaire or integral lamp as a whole system according to a standard process using specified products.

It is the Test of the LED Lighting source case temperature within the LED system (LED Street light, LED Bulb, LED Down Light, LED Flood Light, LED High Bay Light). Put simply, it is the temperature of the LED Lights within the luminaire. The measurement has to be performed as per to the temperature measurement point out by the LED package manufacturer.

Why do we need LM -79 Testing?

Due to the collection of LED lighting products available in the Industries, there is a need to assess the quality and many parameters Related with LED lighting products. LM-79 data allows objective product comparisons and allows for evaluation relative to performance and Quality requirements.

Who can perform LM-79 testing?

LM-79 testing should be performed by ITC INDIA Laboratory for the category of product tested. Only reports from recognized laboratories are relevant. This standard is used for ENERGY STAR program qualification and lighting facts advocate program. All LED product testing are performed according to LM-79 in ITC INDIA laboratory and reports are available upon request. Click hear to see our LM -79 testing report.

What does ITC INDIA provide?

The testing report issued according to a standard format will provide

•        Total Luminous Flux
•        LID (Luminous Intensity Distribution)
•         Electrical Parameter (Voltage AC, DC, Wattage, Current, Power Factor)
•         Luminous Efficacy (calculated)
•         Color Characteristics (CRI, CCT…)
•         Chromaticity coordinates (X, Y...)

Once ISTMT is known, we check if the temperature within the luminaire is within the temperature of the LM-80-08 LED source report. 

Colorimetric Parameters for LED lights:

·        Chromaticity coordinates: (Chroma x / Chroma y / Chroma u(u’) / Chroma v / Chroma v’)

·            Correlated Color Temperature (CCT)

·            Duv Value

·            Color Ratio

·            Peak Wavelength (nm)

·            Half Bandwidth (nm)

·            Dominant Wavelength (nm)

·            Color Purity

·            Color Rendering Index (CRI – Ra)

Photometric Parameters for LED lights:

·            Total Luminous Flux (Lumens)

·            Luminous Efficacy (Lumens/Watt)

·            Radiant Power (Watts)

Electrical Results for LED lights:

·            Input Power (Watts)

·            Input Voltage (Volts )

·            Input Current (Amps)

·            Power Factor

·            Input Frequency (Hz)

Additional Parameters for LED lights:

·            Stabilization Time (Light and Power) = 60 minutes

·            Test Geometry Configuration = 4π

·            Spectroradiometer = (Lisun LMS-9000A Plus)

·            Ambient Temperature = 25.0°C

How to do LM-79 Testing with Integrating Sphere?

How to do LM-79 Testing with Goniophotometer?

Goniophotometer Vs Integrating Sphere

     

For your better understanding, we are going to show you the LM-79 Test report of latest LED in the following:

Learn more about this LM-79 test >

If you’re Buyers Demanding for Photometric Testing– Contact Now!

Wish this blog post will be help. If you have any other questions, please feel free to contact us. ITCIndia team looking forward work with you and get better together!

Mr. Puneet Sharma | Call: 08196980555 | E-mail: ITCIndiaOne@Gmail.Com

Submit your requirement for Testing:-

Full Name

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Describe Your Requirements with Technical Details:

Q:- Is the lumen maintenance percentage a lifetime metric?

Q:- Is the lumen maintenance percentage a lifetime metric?

No. The possible percentage filed on the LED Lighting Facts label explain the lumen maintenance the quantity of light remaining after a particularized time, distinguished to the basic output of the LED light point of supply while performing in the thermal environment of the lamp or luminaire. SSL Solid-State Lighting lifetime and accuracy , by contrast, take into account the performance of additional system factors over time, containing electronics for example. The power supply or driver, for example. Lenses and reflectors, thermal management system, housing, & accompanying components.

There is no Market standard procedure for calculating or judging the lifetime and/or accuracy of SSL Solid-State Lighting products, taking the whole system into account, though some manufacturers have their own procedures for performance so. LED Lighting Facts uses Company standard testing procedures whenever attainable to make secure apples-to-apples comparisons of product performance.

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