BS EN 60922:1997

INTRODUCTION
SECTION 1: GENERAL REQUIREMENTS
1 General
    1.1 Scope and object
    1.2 Normative references
2 Definitions
3 General requirements
4 General notes on tests
5 Classification
6 Marking
    6.1 Mandatory markings
    6.2 Information to be provided, if applicable
    6.3 Other information
    6.4 Marking shall be durable and legible
SECTION 2: SAFETY REQUIREMENTS
7 Protection against accidental contact with live parts
8 Terminals
9 Provisions for earthing
10 Moisture resistance and insulation
11 High-voltage impulse test
12 Thermal endurance of windings
13 Ballast heating
14 Screws, current-carrying parts and connections
15 Creepage distances and clearances
16 Resistance to heat, fire and tracking
17 Resistance to corrosion
Figures
Annexes
A Thermal endurance test for windings
b The use of constants S other than 4500 in Tw tests
C Draught-proof enclosure
D Method of selection of varistors
E Explanation to ballast temperatures
F Particular requirements for thermally protected ballasts
ZA (normative) Normative references to international
    publications with their corresponding European
    publications

Describes general and safety requirements for ballasts for discharge lamps such as high-pressure mercury vapour, low-pressure sodium vapour, high-pressure sodium vapour and metal halide lamps. Covers inductive-type ballasts for use on a.c. supplies up to 1,000V at 50 Hz or 60 Hz associated with discharge lamps, having rated wattages, dimensions and characteristics as given in relevant IEC lamp standards according to IEC Publications 188, 192 and 662. Tests described are type tests. Requirements for testing individual ballasts during production are not included.