Inter-laboratory comparison tests have been carried out between the UNEP Joint Collaboration Centre/Global Efficient Lighting Centre (GELC), located in Beijing, China, and four test laboratories located in the Russian Federation. This effort was a cooperation between en.lighten initiative Partners, initiated and mediated by the UNDP/GEF Project "Transforming the Market for Efficient Lighting in Russia".The specific project goals were to: enhance cooperation of international partners to accelerate the global market transformation to environmentally sustainable lighting; contribute to the enhancement of Russia’s national lighting energy efficiency policy framework; and, strengthen the capacity of Russian lighting test laboratories.

GELC was served as the reference laboratory to coordinate the activities of the other four laboratories and deliver the final test results.

A comparison testing method was used with an omnidirectional light emitting diode (LED) lamp measured against a standard incandescent lamp. Incandescent lamps are commonly used as reference light sources to calibrate the photometric and colorimetric measurement systems of laboratories. The LED lamp, with similar luminous intensity distribution but a different color spectrum, was chosen because it is one of the most recently introduced, innovative and efficient lighting products.

Some of the lamp characteristics measured included: voltage, current, power factor, colour rendering index (CRI), and total luminous flux. The results of the comparison tests demonstrated that the laboratories came very close to the assigned values.

Key recommendations that GELC made to the Russian laboratories as a result of the project were to: check the calibration of the equipment; check the traceability of standard lamps; ensure that the lamps are burned in the correct position and that stabilization is achieved before testing; understand testing principles and make necessary adjustments; and check the results of miscalculations and make necessary corrections, as required.

Based on this successful experience, a joint webinar is planned that will feature GELC and the Russian laboratories communicating the results. For a more detailed analysis, future cooperation may include additional testing and visits to both the GELC and Russian labs.

 


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