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GB 5959.7-2008: Safety in electro-heat installations -- Part 7: Particular requirements for installations with electron guns
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Safety in electro-heat installations -- Part 7: Particular requirements for installations with electron guns
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Basic data
Standard ID: GB 5959.7-2008 (GB5959.7-2008)
Description (Translated English): Safety in electro-heat installations -- Part 7: Particular requirements for installations with electron guns
Sector / Industry: National Standard
Classification of Chinese Standard: K60
Classification of International Standard: 25.180.10
Word Count Estimation: 11,117
Date of Issue: 2008-09-19
Date of Implementation: 2009-06-01
Older Standard (superseded by this standard): GB 5959.7-1987
Quoted Standard: GB/T 2900.23-2008; GB 5959.1-2005; GB 18871-2002; IEC 60204-1-2005; IEC 60364-4-43
Adopted Standard: IEC 60519-7-2008, IDT
Regulation (derived from): Announcement of Newly Approved National Standards No. 16 of 2008 (No. 129 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Chinese standard relates to a device having an electron gun (hereinafter referred to as the electron gun assembly) relating to personal devices Particular requirements for safety. This standard applies to all electric devices with electron guns. This is also applicable to the electron gun assembly and the use of preformed non- heating glow discharge electron gun assembly and the electron gun high voltage power supply. GB 5959. 1-2005"electric plant safety Part 1: General requirements"all of the requirements applicable to this standard. This standard in Chapter 6 to Chapter 16 gives the electron gun device for any additional requirements.
GB 5959.7-2008: Safety in electro-heat installations -- Part 7: Particular requirements for installations with electron guns
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Safety in electroheat installations.Part 7. Particular requirements for installations with electron guns
ICS 25.180.10
K60
National Standards of People's Republic of China
GB 5959.7-2008/IEC 60519-7.2008
Replacing GB 5959.7-1987
Electric safety device
Part 7. with electron guns
Particular requirements
(IEC 60519-7.2008, IDT)
Published 2008-09-19
2009-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative References 1
Terms and definitions 1 3
4 electron beam apparatus structure 2
5 type electron gun 3
6 main danger 3
7 maintenance of high-voltage electron gun chamber 3 ground
7.1 Mobile grounding device 3
7.2 Mechanical grounding device 3
7.3 automatic grounding devices 3
8 high pressure feeder 4
8.1 the high-pressure feeder cable 4
8.2 4 wire loop
Bare minimum distance between the high voltage part 4 8.3
9 electric shock protection 4
10 over-current protection 4
10.1 General requirements 4
High voltage power supply 5 10.2
11 5 equipotential bonding
And the control circuit 12 controls the function 5
The control circuit 5 12.1
12.2 Control Function 5
Coolant 13 5
Process risk 514 or some component caused by
14.1 Fire 5
14.2 5 explosion hazard
14.3 environmental pollution 6
14.4 health hazards 6
Vacuum System 6 14.5
15 X- ray 6
16 mark, nameplate, technical specification documents and 6
16.1 mark, nameplate, technical documentation 6
16.2 detecting, delivery, and use and maintenance of the apparatus having an electron gun 6 described
GB 5959.7-2008/IEC 60519-7.2008
Foreword
This part of all except art in Chapter 16 of the mandatory content.
GB 5959 "electric safety devices" has the following 13 sections.
--- Part 1. General requirements (GB 5959.1-2005, IEC 60519-1.2003, IDT);
--- Part 2. Particular requirements for arc furnace apparatus (GB 5959.2-2008, IEC 60519-4.2006, IDT);
--- Part 3. Particular requirements for induction and conduction heating apparatus and an induction melting apparatus (GB 5959.3-2008,
IEC 60519-3.2005, IDT);
--- Part 4. Particular requirements (GB 5959.4-2008, IEC 60519-2.2006, IDT) resistance heating means;
--- Part 41. Particular requirements for resistance heating means for heating and melting glass --- means (GB 5959.41-2004,
IEC 60519-21.1998, IDT);
Safety regulations plasma apparatus (GB 5959.5-1991, eqv IEC 60519-5.. 1980) --- first portion 5;
--- Part 6. Safety Specification Industrial microwave heating apparatus (GB 5959.6-2008, IEC 60519-6.2002, IDT);
--- Part 7. Particular requirements for the apparatus having the electron gun (GB 5959.7-2008, IEC 60519-7.2008, IDT);
--- Part 8. Particular requirements for electroslag remelting furnace (GB 5959.8-2007, IEC 60519-8.2005, IDT);
--- Part 9. Particular requirements (GB 5959.9-2008, IEC 60519-9.2005, IDT) high-frequency dielectric heating apparatus;
--- Part 10. for industrial and commercial heating systems special requirements (IEC 60519-10.2005, to be transformed) resistor profiling;
--- Part 11. electromagnetic stirring of the liquid metal, the special requirements of the transport or pouring (GB 5959.11-2000, idt
IEC 60519-11.1997);
--- Part 13. Particular requirements for the heating apparatus having an explosive atmosphere (GB 5959.13-2008).
This is Part 7 GB 5959's.
This portion IEC 60519-7.2008 "Safety electrothermal Part 7. Particular requirements for the electron gun having means" (second
, English) while drafting amendments.
IEC 60519-7.2008 translation drafted in accordance with this section.
For ease of use, for IEC 60519-7.2008, made in this section, the following editorial changes.
--- "This standard" be replaced by "this section";
--- deleted international standards foreword and preface;
--- account of the requirements and high-frequency dielectric heating apparatus for the personal protection of integrated mechanical and electrical equipment, which range expansion
To the relevant physical and mechanical means comprising the necessary special safety requirements;
--- increase "GB 18871-2002 Ionizing Radiation Protection and Safety of Radiation Sources basic standards."
This partial replacement GB 5959.7-1987 "safe heating apparatus Part VII. Particular requirements for the apparatus having the electron gun", and
The latter is mainly technical changes compared as follows (listed only project name).
--- According to GB 5959.1-2005 text structure, the standard increased to 11 from the original Chapter 16 chapter, number, title change all over again
Row; text "present standard" to "this section";
--- full article by article number and title IEC 60519-7.2008 corresponding to the modification, the preparation according to GB/T 1.1 provisions;
---range.
Add "Special requirements for personal safety device" provisions;
Edit "electric equipment applicable to one or more electron guns," the scope is "applicable to all electric with electron guns
Heating means ";
Increase "This is also applicable to preparing and using glow discharge electron gun assembly of an electron gun of the non-heating device and the electron gun
GB 5959.7-2008/IEC 60519-7.2008
High voltage power supply ";
Increase the safety Part 1 "GB 5959.1-2005" electric apparatus. General Requirements "all requirements apply to this section.
This section presents all the additional requirements "of the electron gun assembly in Chapter 6 through 16;
--- add "2 Normative References" chapter, references GB/T 2900.23-2008, IEC 60204-1.2005, GB 5959.1-
2005, IEC 60364-4-43, GB 18871-2002 standard;
3.1 ~ 3.13 --- increase of 13 terms and definitions;
--- increase in Chapter 4 to Chapter 6;
--- increase "7 maintenance period of the high-pressure ground electron gun room";
Increase "mechanical grounding 7.2";
Increase "7.3 automatic grounding devices";
--- increase in Chapter 9 to Chapter 11;
--- increase "and the control circuit 12 controls";
--- increase "12.1 control circuit";
--- increase "12.2 Control function";
--- increase "or risk processing certain processes member 14 due to";
--- increase "14.1 Fire";
--- increase "the risk of explosion 14.2";
--- increase "14.3 environmental pollution";
--- increase "14.4 health hazard";
--- change the original standard "vacuum system 9" and "9.1", "9.2", "9.3" to "14.5 Vacuum System";
--- delete the original standards "9.4";
--- change the original standard "6 X- rays and ultraviolet" to "15 X- ray";
--- add "16 mark, nameplate, technical documents and specifications" chapter;
--- increase "16.2 detection, and delivery of the device with the electron gun use and maintenance instructions."
This section was proposed by China Electrical Equipment Industrial Association.
This part of the jurisdiction of the National Electric Industry Standardization Technical Committee (SAC/TC121) equipment.
This section was drafted. Xi'an Jiaotong University, Xi'an Electric Furnace Institute Co., Ltd.
The main drafters of this section. SOCIETY OF Liu Xiping, Zhao Weiping, Zhang Yingming.
This section replaces the following previously issued as follows.
--- GB 5959.7-1987.
GB 5959.7-2008/IEC 60519-7.2008
Electric safety device
Part 7. with electron guns
Particular requirements
Range 1
This part of GB 5959 provides for a special about the personal safety of the device to device (hereinafter referred to as the electron gun device) with electron guns to
begging. This section applies to all electric apparatus having an electron gun.
This section also applies to non-heated high-voltage power source and the electron gun assembly and the electron gun preform using glow discharge electron gun assembly.
GB 5959.1-2005 "Safety heating means Part 1. General Requirements" all requirements apply to this section. This part
Chapter 6 through 16 are given all the additional requirements of the electron gun assembly.
2 Normative references
Terms of the following documents constitute provisions of this section by reference in this part of GB 5959. For dated references,
All subsequent amendments (excluding corrections) or revisions do not apply to this section, however, encouraged to reach an agreement under this section
Whether the parties to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 2900.23-2008 Electrotechnical term industrial heating means (IEC 60050-841.2004, IDT)
GB 5959.1-2005 electric safety devices - Part 1. General requirements (IEC 60519-1.2003, IDT)
GB 18871-2002 Ionizing Radiation Protection and safety of radiation sources basic standards
IEC 60204-1.2005 Safety of machinery Electrical Equipment Part 1. General requirements 1)
Part 4 of the building electrical apparatus IEC 60364-4-43. Safety Chapter 43. Overcurrent Protection 2)
1) Description adopt standard. GB 5226.1-2002 Safety of machinery Electrical Equipment Part 1. General requirements (current valid version) (to IEC
60204-1.2000, IDT)
2) Description adopt standard. GB 16895.5-2002 Electrical installations of buildings Part 4. Safety Chapter 43. overcurrent protection (currently valid version
This) (IEC 60364-4-43.2001, IDT)
3 Terms and Definitions
GB/T 2900.23-2008 and GB 5959.1-2005 established following terms and definitions apply to this standard.
3.1
Emitted from a source (cathode or plasma), moving at high speed along a determined trajectory electron flow.
[GB/T 2900.23-2008 841-30-01, modified]
3.2
Generating one or more beams are formed and accelerated electron beam system.
[GB/T 2900.23-2008 841-30-08, modified]
3.3
And accelerating electrons can be drawn from an electrode having a low electrical conductivity of the medium.
[GB/T 2900.23-2008 841-22-31, modified]
GB 5959.7-2008/IEC 60519-7.2008
3.4
An electrode capable of emitting electrons from a medium having a low conductivity rate. If necessary, accept positive charge.
[GB/T 2900.23-2008 841-22-32, modified]
3.5
The potential between the cathode and anode formed difference to generate electric field for accelerating electrons.
[GB/T 2900.23-2008 841-30-29]
3.6
Providing emission electron gun acceleration voltage and the supply current.
3.7
Built-in workpiece in a vacuum chamber, the electrical connection between the anode of the electron gun high voltage power supply portion is connected to the system.
3.8
To prevent any kind of harm when the device is related to the operation of the control member.
3.9
Thin indoor air container, a workpiece is processed in the chamber.
3.10
An electron gun disposed in the vacuum chamber.
NOTE. The chamber may utilize different diaphragm opening diameter and spaced from the workpiece in order to establish a pressure differential between the electron gun and the workpiece.
3.11
The electron beam generating electromagnetic coil in the heating space of displacement of the mobile surface of the object or the deflection electrode system.
[GB/T 2900.23-2008 841-30-25, modified]
3.12
For changing the external electron gun solenoid or a permanent magnet of the electron beam direction.
3.13
An electromagnetic coil for focusing the electron beam, a system or a plurality of electromagnetic coils on the charging capacitor plates heated surface.
[GB/T 2900.23-2008 841-30-27, modified]
Electron beam apparatus structure 4
The electron beam apparatus is mainly composed of the following parts.
a) an electron gun;
b) high-voltage power supply;
c) focusing and electron beam deflection system, comprising a current source and a control system required;
d) an electron beam bending system;
e) chamber and tooling;
GB 5959.7-2008/IEC 60519-7.2008
f) the vacuum system;
g) control system;
h) attachment (power, coolant, pneumatic means, hydraulic means etc.).
Note. Only some structure in a specific apparatus, e.g., no bending systems in many installations.
5 type electron gun
Electron gun is mainly used for.
--- optics (e.g. the CRT, imaging, image scanning, electron microscopy);
Some non---- heating means (e.g., polymer modification, food processing, sterilization, disinfection);
--- all kinds of electric applications.
For example, a typical applied electric melting, heating, evaporation, and surface treatment.
The use of the electron gun according to the following classification.
--- accelerating voltage;
---rated power;
--- and electron beam pattern;
--- bending and deflection of the electron beam system.
6 main danger
An electron gun for electrical heating, by its very nature, generally result in the following hazards.
--- high-voltage electric shock (see Chapter 8, 9 and 11);
--- X-rays (see Chapter 15);
--- vacuum chamber of a high energy density due to thermal deformation is formed (see Chapter 14).
Further, there may be due to an electron beam apparatus such as a vacuum apparatus (see Chapter 12) due to the danger similar components and operation of an electron gun (see
Chapter 14) caused dangerous.
7 maintenance of high-voltage electron gun room Ground
7.1 Mobile grounding device
After the high voltage power supply cut off, or open door position close to the electron gun electron gun chamber of the charged components during normal operation, the contact
It must be preceded by a mobile grounding device to remove any residual charge. Mobile review by the grounding device is designed to be used by.
High deflection ground conductor mobile grounding device shall be permanently fixed to the ground location. The ground connection point should be easy to see and easy for the operator
Checks, must be clear and secure tag.
7.2 Mechanical grounding
Alternatively mechanical automatic grounding devices mounted, the gun chamber when it is opened automatically mechanical action grounded. Such machines provide suitable properties
Mechanical automatic grounding devices in a safe distance can be easily visually checked.
7.3 automatic grounding devices
Under the following conditions may be optionally mounted an automatic grounding devices.
a) When the electron gun is stopped, the automatic operation means;
b) from the normal performance of automatic fault detection means of the automatic inspection system;
c) a clear signal to the display opens the gun chamber of the performance of the automatic grounding means is normal;
d) before confirming properly grounded grounding devices, electrical and mechanical interlock mechanism after review by the design of the gun chamber can not be opened.
In the next high-voltage power supply, the device should be installed in a portable ground position easy to see.
GB 5959.7-2008/IEC 60519-7.2008
8 High Pressure Feeder
8.1 high-voltage feeder cables
High-pressure feeder should have sufficient dielectric strength to effectively protect the mechanical damage.
Armored cable used in high voltage feeder or feeder cable conduit or a flexible hose should be built. The cable shield, a flexible hose or conduit to be
Fixedly connected to a potential.
When the high voltage feeder cable disposed within the conduit or flexible hose, in addition to the return conductor, the other cable can not be placed within the same. Each electron gun
Should have its own conduit or flexible hose.
If the high voltage terminal of the high-pressure feeder cable disposed within the conduit or flexible hose, the flexible hose or conduit to be connected to the extension
Box.
High pressure and low pressure feeder cables may be laid in a cable with a high-voltage feeder cables protected electromechanical cable channel or cable channel, but
The groove or slot can not be used as a protective.
8.2 loop wire
Each electron gun should have its own circuit wires to carry high-voltage power supply in the return beam prescribed route. The cross wire loop
Load current size of the area should correspond to the electron gun, but copper wire cross-sectional area not less than 6mm2. For special electronic gun, if used
Copper wire cross-section is less than the return conductor of 6mm2, should pay special attention during installation added mechanical protection, and the feed line conductors and the circuit size of at least
The wire cross-sectional area corresponding to equal.
Application flexibility and return conductor insulation of the cable configuration.
Return conductor should be connected at the end of the workpiece or the ground near the electron gun.
It is able to define a return path, return conductor in high voltage power supply should be grounded, and the voltage applied between the ground terminal and reliable link
limit. If the loop wire directly to ground in the high-voltage power supply, should be particularly careful attention to the ground and comply with EMC requirements.
At rated current, the voltage drop across the loop wires should not exceed 1.5V. Return conductor between the electron gun high voltage power supply thereto should
Feeder installed with cable.
Note 1. Each device has at least two wire loop, so that even if a failure occurs, the other can still ensure safety. The number and arrangement of the return conductor
It may be determined according to the number of electrical connection of the electron gun and the electron gun chamber and the vacuum chamber.
Note 2. In the apparatus having the electron gun, the electron gun around the loop current flowing through the chambers and its frame means.
The minimum distance between the high voltage part exposed 8.3
For the electron gun and its power supply from the high-pressure safety clearance apparatus restrictions, because they operate in a dry, clean rooms. But using
Provision should be made in the apparatus conditions using the manufacturer's instructions.
9 Protection against electric shock
Electron gun power supply should be cut off safety interlock in the following cases.
--- electron gun chamber open and close the charging member;
--- high-voltage cable and is incorrectly connected or disconnected;
--- high voltage power supply housing is opened.
In the above case, the interlock system cut off the power, the release of high pressure charge of the capacitor, the use of reliable measures do not allow any action to occur.
Further, frequent opening of the various components, may occur as long as the voltage, it shall be interlocked.
NOTE. In the case where more than one device or more electron gun is connected to the high voltage power supply and associated cables different sets of electron guns there may be risk of electric shock.
End of these cables are not connected in this way can be charged. If there is some excess cable in the device, the danger also exists.
10 over-current protection
10.1 General requirements
According to the provisions of GB 5959.1-2005, over-current protection measures should comply with the relevant standards, for example, IEC 60364-4-43 and
IEC 60204-1.2005.
GB 5959.7-2008/IEC 60519-7.2008
10.2 high voltage power supply
High voltage power supply system should be configured by adjustable setpoint overcurrent and overvoltage protection.
High voltage power supply can not be influenced over the grid voltage.
11 equipotential bonding
According to GB 5959.1-2005 in Chapter 11.
In order to prevent the operator may touch the voltage between the metal member, should equipotential interconnection between all the conductors, the frame and the housing.
A vacuum chamber, a......
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