Breakdown Measurement of N2O Mixtures with CO2, N2, 02 in Uniform Electric Fields

Abstract

Breakdown strength in uniform electric fields of N2O mixtures with CO2, N2, and O2 is measured under AC voltage stress, 300 kPa pressure, and electrode separation of 5 mm. The obtained results show the best synergism of 115% for N2O/CO2 30/70 mixture. For high electric strength of mixtures, a high fraction of N2O is beneficial, but is limited by the oxidizing power. Considering this limit, a N2O/CO249.1/50.9 mixture can be used with the electric strength 135% of synthetic air and 45% of SF6, respectively.