EN 60519-7:2008

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Components of electron beam installations
5 Types of electron guns
6 Main risks
7 Earthing of high-voltage parts in gun
   chamber during maintenance
   7.1 Manual earthing device
   7.2 Mechanical earthing system
   7.3 Automatic earthing system
8 High-voltage feeding
   8.1 High-voltage feeder cables
   8.2 Return conductor
   8.3 Minimum distance between
        bare high-voltage components
9 Protection against electric shock
10 Protection against overcurrent
   and overvoltage
   10.1 General requirements
   10.2 High-voltage power supply
11 Equipotential bonding
12 Control circuits and control functions
   12.1 Control circuits
   12.2 Control functions
13 Liquid cooling
14 Risks caused by certain processes
   or components
   14.1 Risk of fire
   14.2 Danger of explosion
   14.3 Environmental pollution
   14.4 Health hazards
   14.5 Vacuum plant
15 X-rays
16 Marking, labelling, technical documentation
   and instructions
   16.1 Marking, labelling and technical
        documentation
   16.2 Information on inspection and
        commissioning, and instructions for utilization
        and maintenance of installations
        with electron guns
Annex ZA (normative) - Normative references to
                       international publications with
                       their corresponding European
                       publications

Deals with safety of electroheat installations with electron guns and applies to all electroheat applications with electron guns. May also be used for non-thermal applications with electron guns and equipment employing glow discharge systems. Applies also to high-voltage sources feeding electron guns. The main changes with respect to the previous edition cover: - new editions of IEC publications taken into account; - addition of new clauses; - requirements for the earthing system updated; - arrangement of return conductor changed.