IEC 61050:1991 Transformers for tubular discharge lamps having a no-load output voltage exceeding 1000 kV (generally called neon-transformers); general and safety requirements
Applies to independent and built-in single-phase transformers with separate input and output windings, for use on a.c. supply up to 1 000 V at 50 Hz or 60 Hz, intended to supply lamps having a no-load rated output voltage not exceeding 10 000 V.
IEC 61050:1991 history
1994IEC 61050:1991/AMD1:1994 Amendment 1 - Transformers for tubular discharge lamps having a no-load output voltage exceeding 1000 V (generally called neon-transformers). General and safety requirements
1992IEC 61050:1991/COR1:1992 Transformers for tubular discharge lamps having a no-load output voltage exceeding 1000 kV (generally called neon-transformers); general and safety requirements
1991IEC 61050:1991 Transformers for tubular discharge lamps having a no-load output voltage exceeding 1000 kV (generally called neon-transformers); general and safety requirements