Final report: SIM regional comparison of AC-DC voltage transfer difference (SIM.EM.K6a, SIM.EM-K9 and SIM.EM-K11)

• Autor(a) principal: Campos, Sara
• Data de Publicação: 2009
• Outros Autores: Filipsky, Peter, Izquierdo, Daniel, Afonso, Edson, Landim, Regis Pinheiro, Lillo, Lucas di, Lipe, Thomas
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional do INMETRO
• Texto Completo: http://hdl.handle.net/10926/708

In the Sistema Interamericano de Metrología (SIM) there are several National Metrology Institutes having calibration and measurement capabilities in the ac-dc voltage transfer difference, but only three NMIs have participated in the CCEM Key Comparisons of ac-dc transfer difference, CCEM-K6a, CCEM-K9 and CCEM-K11. Three comparisons, SIM.EM-K6 A, SIM.EM-K9, SIM.EM-K11, were proposed to assess the measurement capabilities of the remaining NMIs in the SIM region, in ac-dc voltage transfer difference. The proposed test points were selected to link the results of such comparisons with the equivalent CCEM Key Comparisons, through the three NMIs participating in both. Additionally, a fourth comparison, SIM.EM-Supplementary, was proposed, in support of the SIM NMIs power/energy meter calibration capabilities. CENAM volunteered to provide the travelling standard (TS) and to pilot and coordinate the comparison references values were to be based on the results provided by the laboratories with participation in the key comparisons. The comparisons started in January 2004 and the measurements were concluded in December 2004. The Draft A was issued by the pilot laboratory and was reviewed by the participants in 2006, comments were added and the final results are reported in this document.