1)Class of accuracy: 0.2S 0.2 0.5 1 ... /busbarStandards: acc. to BS 3938, EN 60044-1 Technical data:Class of accuracy: 0.2S … 3Rated burden: max. 15 VARated ... , FS 10Working temperature range: -20 … +45°CInsulation class: E (max. 120°C)High voltage test: 4 kVeff, 50 Hz, 1 minProtection ... transformer in question, 2) rated burden (VA), 3) accuracy class, 4) rated primary current (A), as listed in the catalog ...