DIN 42600-5 Instrument transformers for 50 Hz, U<(Index)m> 0.72 kV to 52 kV - Part 5: Current Transformers (support-type-insulator) U<(Index)m> 12 kV to 36 kV - Large design, main dimensions, indoor type

standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2013