Covers built in ballasts, excluding resistance types, for use on a.c. supplies up top 250 V at 50 Hz, or 60 Hz, associated with pre heated cathodes operated with or without a starter switch.Applies to complete ballasts and to their component parts such as reactors, transformers and capacitors having a capacitance equal to or less than 0.1 F.

IEC 60921 Ed. 2.1

IEC 60920 Ed. 1.0

SS 431 12 82:1983 - Similar

VDE 0712-100:1977 - Similar

NFC 71 212:1983 - Identical

BS 2818-1:1985 - Identical