CABLE PrIMARY CURRENT TRANSFORMERS STANDARD SERIES Technical data Highest voltage for equipment 0,72 kV Power-frequency withstand voltage 3 kV Primary current Ipn 40 to 3000 A Secondary current Isn 5 or 1 A Frequency 50 or 60 Hz Rated output 1 to 60 VA Accuracy class 0.5 - 1 - 3 Security factor 5 to 30 Continuous thermal current 1.2 Ipn Short-time thermal current Ith 80 Ipn.1s Dynamic current Idyn 2.5 Ith Insulation class E Ambient temperature -25 °C to +40 °C Case Thermoplastic UL94 V0 or V1 Standards IEC 60044 - IEC 61869 - NF C42502 VDE 0414 - BS 7626