This part of AS/NZS 61347 specifies particular safety requirements for electronic ballasts for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz with operating frequencies deviating from the supply frequency, associated with fluorescent lamps as specified in AS/NZS 4782.1 and AS/NZS 60901, and other fluorescent lamps for high-frequency operation. Particular requirements for electronic ballasts with means of protection against overheating are given in annex C. Particular requirements for a.c./d.c. supplied electronic ballasts for maintained emergency lighting are given in annex J. Performance requirements are the subject of AS/NZS 60929.