IS 9974 : Part 2 : 1981 SPECIFICATION FOR HIGH PRESSURE SODIUM VAPOUR LAMPSS PART II STANDARD LAMP DATA SHEETS UDC 621.327.532 (083.6) ETD 23
Reaffirmed 2017
1. Scope
1.1 This standard (Part II) comprises lamp data sheets for high pressure sodium vapour lamps covered by this standard.