Applies to new inductive voltage transformers for use with electrical measuring instruments and electrical protective devices at frequencies from 15 Hz to 100 Hz.Although it relates basically to transformers with separate windings, it is also applicable
SANS 60044-2:2003 history
0000 SANS 61869-3-2013
2003SANS 60044-2:2003 Instrument transformers Part 2: Inductive voltage transformers