Instrument transformers for 50 Hz, U<(Index)m> 0.72 kV to 52 kV - Part 2: Current transformers U<(Index)m> = 0.72 kV and U<(Index)m> = 1.2 kV - Main dimensions
Draft Document - Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance (IEC 85/252/CD:2004)
Basic standard for the in-situ measurement of electromagnetic field strength related to human exposure in the vicinity of base stations; German version EN 50492:2008