LM-79 Testing Laboratory

LM-79 Testing Laboratory

KC India LM-79 is an approved method for testing electrical and photometric measurements of solid-state lighting products. LM-79 contains procedures for performing reproducible measurements of LEDs properties, including: total flux, electrical power, efficacy and chromaticity. LM 79 testing labs, Photometric Testing, Luminaire Testing Lab, LED Tests LM-79 India. 

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 testing Lab method. It is not only the LED but the whole SSL has to qualify all the tests.

LM 79 Testing Laboratories- KcIndia Test Lab

LM 79 Testing  is a method of approval for taking electrical and photometric measurements of Solid-State Lighting products. So KC Lab is providing you accurate LM 79 testing by experts in the very short period of time. LM 79 Test covers total flux light output, electrical power, efficacy, chromaticity, and intensity distribution. The five required metrics on the LED Lighting Facts label come from LM 79 testing Labs results.

What Is LM 79 Testing?

Everyone knows about it, in 2008, the Illuminating Engineering Society published LM 79 Testing Method, Approved Method for the Electrical and Photometric Measurements of SSL Products. LM 79 testing Laboratory capture performance nature of products that feature SSL, including light-emitting diodes LEDs.

KCIndia NABL (TC-5844) ISO 9001:2015 Accredited LM 79 Testing Laboratory Can do LM-79 Testing on High bay LED lights Testing as per standard Test to be conducted under LM 79:-

1.Measurement of Total Luminous Flux & Luminous Efficacy

2.Color Characteristics (Chromaticity Coordinates, Correlated Color Temperature & Color Rendering Index)

3.Light Intensity Distribution

Colorimetric Parameters:

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

2.Correlated Color Temperature (CCT)

3.Duv Value

4.Color Ratio

5.Peak Wavelength (nm)

6.Half Bandwidth (nm)

7.Dominant Wavelength (nm)

8.Color Purity

9.Color Rendering Index (CRI – Ra)

Photometric Parameters:

1.Total Luminous Flux (Lumens)

2.Luminous Efficacy (Lumens/Watt)

3.Radiant Power (Watts)

4.Electrical Results:

5.Input Power (Watts)

6.Input Voltage (Volts )

7.Input Current (Amps)

8.Power Factor

9.Input Frequency (Hz)

Additional Parameters:

1.Stabilization Time (Light and Power) = 60 minutes

2.Test Geometry Configuration = 4π

3.Spectroradiometer = (Lisun LMS-9000A Plus)

4.Ambient Temperature = 25.0°C

IES LM-79 "Electrical and Photometric Measurements of Solid-State Lighting Products"

Approved method describing procedures and precautions in performing reproducible measurements of LEDs:

1.Total luminous flux

2.Electrical powers

3.Luminous Intensity distribution

4.Efficacy (lm/watt)


LM-79 Scope

Applies to LED-based products incorporating control electronics and heat sinks, that is, those devices that require only AC mains power or a DC voltage power supply to operate.

Absolute Photometry Basis

LM-79 requires complete luminaire testing

Traditionally, photometric evaluation of lighting products is based on separate tests for lamps and luminaires ("relative")

For SSL products, LED lamps typically cannot be separated from their luminaire because of heat effects ("absolute")

Relative vs. Absolute Photometry

Relative testing – Lamps of interest and luminaire (with reference lamp) are measured separately. Then the actual light distribution and intensity of the complete luminaire of interest is derived by normalization of the test data

Absolute testing – The actual light distribution and intensity of the luminaire of interest is measured directly from the complete luminaire.

Why KC India Test Lab is Best for  LM 79 Testing Lab?

LM 79 testing lab provides a snapshot of performance under specified operating conditions at some point in the life of a product, usually, at the beginning of the operation, these are referred to as initial measurements. It never addresses permanent ratings, changing performance over time e.g., lumen maintenance, or LED case temperature.

The LM 79 methods are really applicable to integrated LED products, such as luminaries and replacement lamps. It is not applicable to LED packages, modules, or arrays

LM 79 is the method for testing electrical and photometric measurements of SSL products.

LM 79 contains procedures for performing reproducible measurements of LEDs properties, including total flux, electrical power, efficacy, and chromaticity.

The scope of LM 79 Testing Laboratories applied to LED products that incorporate control electronics and heat sinks. This covers complete LED luminaries and integrated LED sources. It does not include bare LED chips or LED-based products without a light source.

LM 79 Test Labs – LM 79 Testing Laboratories – KC  India

If you have any query regarding LM-79 Testing and Certification. Kindly send us your testing requirements with the product technical details to submit you our testing charges. We are waiting for your earliest reply

Get introduced to the best place which is KC India for LM 79Testing Labs where you can have the best result for LM 79 Testing. Call on 9599880268 for LM 79 Testing laboratories.

LM 79 Testing Lab | LM 79 Testing Labs | LM 79 Testing Laboratory


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