General and safety requirements-Lamp controlgear -

CONTENTS Page INTRODUCTION .................................................................................................................... 5 Clause 1 Scope .............................................................................................................................. 6 2 Normative references....................................................................................................... 6 3 Definitions ....................................................................................................................... 7 4 General requirements .....................................................................................................11 5 General notes on tests....................................................................................................11 6 Classification ..................................................................................................................12 7 Marking ..........................................................................................................................12 7.1 Items to be marked................................................................................................12 7.2 Durability and legibility of marking .........................................................................13 8 Terminals........................................................................................................................13 9 Provisions for protective earthing....................................................................................14 10 Protection against accidental contact with live parts .......................................................14 11 Moisture resistance and insulation ..................................................................................15 12 Electric strength..............................................................................................................15 13 Thermal endurance test for windings of ballasts..............................................................16 14 Fault conditions ..............................................................................................................19 15 Construction ...................................................................................................................21 15.1 Wood, cotton, silk, paper and similar fibrous material ............................................21 15.2 Printed circuits.......................................................................................................21 16 Creepage distances and clearances ...............................................................................22 17 Screws, current-carrying parts and connections ..............................................................24 18 Resistance to heat, fire and tracking...............................................................................24 19 Resistance to corrosion ..................................................................................................2