luminaire testing laboratory
What are the limitations of LM-79?
As we all know about the strength of LM 79. Everything has its pros and cons. Let us have a look on the drawbacks of LM 79.
- LM 79 depicts the parameters of the individual products. So the obtained Parameters cannot be used to access alike products.
- Other limitation is the sample size. It does not state any sample size. So, the manufacturer provides only one sample instead of supplying more. This thus increases the vulnerability of lesser quality products.
- This can be used only to determine complete luminary instead of LED used ( as based on absolute photometry) , which can produce different results due to quality of accessories used like glass, thermal effect, lenses etc.
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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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Find LM-79 Testing Service in Your Area
ITCIndia specializes in the measurement of Solid State Lighting per IES standards including NABL accredited LM-79 luminaire testing. ITCIndia laboratory is NABL Approved LM-79 Luminaire Testing, LM-79 Luminaire Testing for ENERGY STAR® for SSL, and is accredited to provide test and measurement under ISO 17025.
ITC India NABL approved Testing Laboratory (with Certificate No. T 1811 attached herewith) with specialization to test against EN and IEC standards for electrical safety leading to CE/NIST/IEC certification. Our Lab is fully equipped with high accuracy measuring testing Instruments and trained personal to provide testing & certification services for different type of products according to IEC Standards. Some of which are IEC 60335–1, IEC 60601, IEC 61010, IEC 60204, IEC 60598, IEC 60950, IEC 61427, BS EN 50262, etc…..
The laboratory is following the procedure as required by International Standard IEC/ISO 17025 and is already certified for IEC/ISO 17025 by NABL.ITC INDIA performing ELECTRICAL SAFETY TESTING for the following:
EMC/EMI Testing Machinery Testing Luminaries and Lightning Testing Electro Medical Equipments Testing Laboratory Equipment Testing Household Appliances Testing IT and Telecom Equipment Testing Environmental Testing Battery Testing. LM 79
ITCIndia’s LM-79 luminaire and lamp testing fully evaluates the assembled luminaire for total flux, electrical power, efficacy (lm/watt), chromaticity, and angular distribution of light.
ITCIndia provides LM-79 luminaire and lamp testing reports for:
- ENERGY STAR®
- LED Lighting Facts
- DesignLight Consortium
The standard LM-79 luminaire test report includes:
- Luminaire Efficacy
- Zonal Lumen Density
- Visible spectral power distribution
- Chromaticity coordinates
- Color over angle
- Various electrical measurements
- IES file
ITCIndia testing facilities are equipped with multiple type-c moving mirror color goniophotometers and integrating spheres up to 3 meters in diameter – ideal for testing large troffers and LED street lights.
ITCIndia laboratory features both a Type A and Type C Goniometer for testing a wide variety of luminaires.
LM-79-08. It is the Illuminating Engineering Society of North America (IESNA) approved method for the Electrical and Photometric Measurements of Solid-State Lighting. It measures an LED luminaire or integral lamp as a whole system according to a standard process using specified equipment.
IES LM-79 Electrical and Photometric Measurements of Solid-State Lighting Products
Approved method describing procedures and precautions in performing reproducible measurements of LED Lights:
- Total luminous flux
- Electrical powers
- Luminous Intensity distribution
- Efficacy (lm/watt)
LM-79 Luminaire Testing 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.
Kindly send us the following Details, So that we can provide you quotation for the same:
- Product Name, Technical Specifications and Brochure
- Product Images
- Total Number of samples Required: 2
Information about Federal and State LED Lighting Programs and Resources.
Call us at 8196980555 or email ITCIndiaOne@Gmail.Com for price information or an immediate quote today.
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