IEC 60519-7 pdf download – Safety in electroheat installations – Part 7: Particular requirements for installations with electron guns
1 Scope
This part of lEC 60519 deals with safety of electroheat installations with electron guns. Itapplies to all the electroheat applications with electron guns.
This standard，whilst prepared for electroheat installations with electron guns may, however,also be used for non-thermal applications with electron guns and equipment employing glowdischarge systems, where applicable.
This standard applies also to high-voltage sources feeding electron guns.
All requirements of lEC 60519-1 apply. Additional requirements for installations covered bythis part of the standard are given in Clauses 6 to 16.
2Normative references
The following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies.For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 60050-841:2004,International Electrotechnical Vocabulary – Part 841: Industrialelectroheat
IEC 60204-1:2005,Safety of machinery – Electrical equipment of machines – Part 1:Generalrequirements
IEC 60364-4-43，Electrical installations of buildings – Part 4-43: Protection for safety -Protection against overcurrent
lEC 60519-1:2003,Safety in electroheat installations – Part 1: General requirements
3Terms and definitions
For the purposes of this document,the terms and definitions given in lEC 60050-841,lEC 60519-1 and the following apply.
3.1
electron beam
electron flux emitted from one source (cathode or plasma) and moving along the exactlydetermined tracks at very great velocities
[IEV 841-30-O1, modified]
3.2
electron (beam) gun
system of generating, forming and accelerating one or more electron beams
3.3
anode (of an electron gun)
electrode capable of educing and accelerating electrons from the medium of lowerconductivity
[IEV 841-22-31, modified]
3.4
cathode (of an electron gun)
electrode capable of emitting electrons from the medium of low conductivity and also ofreceiving positive carriers, if necessary
[IEV 841-22-32, modified]
3.5
beam accelerating voltage
potential difference between the cathode and the anode， to generate an electric field foracceleration of electrons
[IEV 841-30-29]
3.6
high-voltage power supply
source of the acceleration voltage and of the emission current for electron guns
3.7
return conductor
electrical interconnection between the high-voltage power supply (positive pole) and anodicpart of the electron gun system including the vacuum chamber around the workpiece
3.8
interlock
device that prevents activation of a piece of equipment when any form of hazard or dangerexists
3.9
vacuum chamber
enclosed space of a vacuum plant constructed in such a way that it can withstand a rarefiedatmosphere inside, in which the workpiece to be treated is placed
3.10
electron gun chamber
vacuum chamber in which the electron gun is located
NOTE This chamber may be separated from the workpiece by an aperture , so that between the electron gun andthe workpliece, a pressure difference can be established.
3.11
electron beam deflection system
electromagnetic coil or deflecting electrodes system,applied to place the beam to differentworking positions or move the beam over the charge heat surface
[IEV 841-30-25, modified]
3.12
electron beam bending system
electromagnetic coil or permanent magnet for changing the direction of the electron beamoutside the electron gun
IEC 60519-7 pdf download – Safety in electroheat installations – Part 7: Particular requirements for installations with electron guns
