INTERNATIONAL INTERLABORATORY COMPARISON IC 2013 EXPERIENCE AND PARTICIPATION RESULTS OF THE VNISI TESTING CENTRE

Between October 2012 to August 2013 an International Interlaboratory comparison IC 2013 light-emitting diode products measurements was undertaken by a group of international experts as part of a special programme of the International Energy Agency “IEA 4 E SSL Annex”. During the following year, analysis and processing of the measurement results were carried out. Then progress reports were published. In September 2014, a final report was published, which contained the data and measurement result analysis of all participants1. 54 laboratories from 18 countries took part in the measurements directly. In addition, results from 35 US laboratories were included in the comparison report. They performed measurements for similar lamps using similar methods shortly before the start of the IEA 4 E SSL Annex project. Besides, data from 21 laboratories of the Asia Pacific Laboratory Accreditation Cooperation (APLAC) were included in the final report. Thus in total, measurement data from 110 laboratories worldwide were included in the IC 2013 final report. The measurements were performed for 123 sets of test samples. Every set contained four or five types of lamps, including light-emitting diode lamps. The parameters measured for each test sample included luminous flux, active power, luminous efficacy, effective values of current and voltage, power factor, chromaticity coordinates, correlatedchromatic temperature and colour rendition index. This article considers the differences in measurements results obtained by participant laboratories, including the VNISI Testing Centre (VNISI TC), and between the measurement results obtained in the nucleus organising laboratories (NIST (USA), VSL (Europe), NLTC and AIST (Asia Pacific)). The obtained results were processed according to ISO 13528 international standard requirements (z’-index indicator was determined). In cases where a participant laboratory submitted evaluations of measurement uncertainties in its report, the Еn value indicator was determined according to ISO/IEC 17043. An analysis of the results is given here.

• and RaisaI.
• Bartsev AlexeiA.
• Roman I.

• Технические науки. Промышленность