BUSBAR CURRENT TRANSFORMER TR33 TR66 SERIES  Technical data  Highest voltage for equipment 0.72 kV Power-frequency withstand voltage 3 kV Primary current Ipn From 100 to 10 000 A Secondary current Isn 5 or 1 A Lenght of secondary cables 2.5 m Frequency 50 or 60 Hz Rated output 1 to 60 VA Accuracy class 0.2 - 0.2S - 0,5 - 0.5S - 1 - 3 - 5P - 10P - X Security factor 5 to 30 Accuracy limit factor 5 - 10 - 15 - 20 - 30 Continuous thermal current 1,2 Ipn Short time thermal current Ith Up to 80 In Dynamic current Idyn 2,5 Ith Insulation class E Ambient temperature -5°C à + 70°C Standards IEC 60044 - IEC 61869