Energy performance of lamp controlgear - Part 2: Controlgear for high
intensity discharge lamps (excluding fluorescent lamps) - Method of
measurement to determine the efficiency of controlgear
Recording - Helical-scan digital video cassette recording system using
6,35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 and
1250-50 systems) - Part 4: Pack header table and contents
Railway applications - Fixed installations - Electrical safety, earthing
and the return circuit - Part 3: Mutual interaction of a.c. and d.c.
traction systems