Key Comparison of the Standards for the Volt of the Russian Federation and the Republic of Belarus Using a Quantum Comparison Standard

The procedure and results of key comparisons of the national voltage standards of the Russian Federation and the Republic of Belarus using a 10 V quantum comparison standard are discussed. The comparisons agree with the reference value obtained from the BIPM voltage standard. The relative difference was 0.9·10–10 with a combined relative standard uncertainty of 2.6·10–10.