EN 60044-2:1999 Instrument Transformers - Part 2: Inductive Voltage Transformers (Incorporates Amendment A1: 2000)
EN 60270:2001 High-Voltage Test Techniques - Partial Discharge Measurements
HD 588.1 S1-1991 High-voltage test techniques; part 1: general definitions and test requirements (IEC 60-1:1989 + corrigendum March 1990)
DIN EN 50482:2008 history
2008DIN EN 50482:2008 Instrument transformers - Three-phase inductive voltage transformers having U<(Index)m> up to 52 kV; German version EN 50482:2008