DIN 42600-9 E:2008-06 Instrument transformers for 50 Hz, Um 0,72 kV to 52 kV - Part 9: Voltage Transformers Um = 12 kV and Um = 24 kV - Narrow design, main dimensions, indoor type
2013DIN 42600-9:2013 Instrument transformers for 50 Hz, U<(Index)m> 0,72 kV to 52 kV - Part 9: Voltage Transformers U<(Index)m> = 12 kV and U<(Index)m> = 24 kV - Narrow design, main dimensions, indoor type
1985DIN 42600-9:1985 Instruments transformers for 50 Hz, U<(Index)m> 0,6 to 52 kV; voltage transformers U<(Index)m> 12 and 24 kV; narrow design, main dimensions, indoor type