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.