This Standard specifies performance requirements for ballasts (hereafter referred
to as "ballasts") excluding resistance types, with the rated supply voltage up to a.c.
1 000 V at 50 Hz, 60 Hz or 50/60 Hz, and with ht erated secondary voltage up to 1 000 V
associated with fluorescent lamps specified in JIS C 7601 and low-pressure mercury germicidal discharge tubes specified in JIS C 7605 (hereafter referred to as "lamps").
It applies to complete ballasts and their component parts such as reactors, trans-
formers and capacitors.
TThis Standard may be applied also to the ballasts lighting fluorescent lamps which are not specified in JIS C 7601 or JIS C 7605.
A.C. supplied electronic ballasts for tubular fluorescent lamps for high frequency
operation specified in JIS C 8147-2-3 are excluded from the scope of this Standard.
NOTE For safety requirements, see JIS C 8147-1 and JIS C8147-2-8.
NOTE 2 The International Standard corresponding to this Standard and the symbol
of degree of correspondence are as follows.
IEC 60921 : 2004 Ballasts for tubular fluorescent lamps---Performance re-
quirements and Amendment 1 (2006) (MOD)
The symbols which denote the degree of correspondence in the contents
between JIS and the corresponding International Standard are IDT (iden-
tical), MOD (modified) and NEQ (not equivalent) according to ISOfIEC
Guide 21.