爆炸性气体环境用电气设备 第15部分：危险场所电气安装（煤矿除外）（英文版）
英文名称： Electrical apparatus for explosive gas atmospheres--Part 15:Electrical installations in hazardous areas(other than mines)
中标分类： 电工>>低压电器>>K35防爆电器
ICS分类： 电气工程>>特殊工作条件用电气设备>>29.260.20易爆环境用电气设备
采标情况： eqv IEC 60079-14：1996
发布部门： 国家质量技术监督局
发布日期： 2000-10-17
实施日期： 2001-06-01
首发日期： 2000-10-17
复审日期： 2004-10-14
归口单位： 全国防爆电气设备标准化技术委员会
主管部门： 中国电器工业协会
起草单位： 南阳防爆电气研究所
页数： 32页
出版社： 中国标准出版社
本标准规定了爆炸性气体环境中电气安装的设计、选型和安装的具体要求。这些要求是对非危险场所电气安装要求的补充。
本标准适用于危险场所中有电气设备的安装，无论是永久的、临时的、移动的、车载的或手提的。
本标准不适用于：煤矿井下电气安装；由可燃性粉尘或纤维形成危险场所的电气安装；炸药的制造和加工；炸药的制造和加工；医疗室。
Contents
Preface……………………………………………………………………………………3
IEC Preface………………………………………………………………………………5
IEC Introduction…………………………………………………………………………6
1. Scope …………………………………………………………………………………7
2． Cited Standards………………………………………………………………………7
3． Definition………………………………………………………………………………9
4. General Rules…………………………………………………………………………12
4.1 General Requirements…………………………………………………………………12
4.2 Documents……………………………………………………………………………13
5. Selection of electrical apparatus (including cable and conduit)………………………13
5.1 Specific documents……………………………………………………………………13
5.2 Selection according to area classification……………………………………………13
5.3 Selection according to ignition temperature of gas or vapor…………………………14
5.4 Selection According To The Category Of Electrical Apparatus……………………15
5.5 External Influences……………………………………………………………………15
6. Prevention of hazardous spark……………………………………………………16
6.1 hazard arising from active parts……………………………………………………16
6.2 Hazard Arising From Bare External Conductor Components………………………16
6.3 Isopotential connection……………………………………………………………17
6.4 Static electricity……………………………………………………………………17
6.5 Lightning-proof……………………………………………………………………17
6.6 Electromagnetic radiation…………………………………………………………18
6.7 Cathode protective metal parts……………………………………………………18
7. Electrical protection………………………………………………………………18
8. Emergency switch-off and electrical isolation…………………………………19
8.1 Emergency switch-off……………………………………………………………19
8.2 Electrical isolation…………………………………………………………………19
9. Wiring system……………………………………………………………………19
9.1 General……………………………………………………………………………19
9.2 Cable system in Zone 0……………………………………………………………21
9.3 Cable system in Zone 1&2…………………………………………………………21
9.4 Conduit system……………………………………………………………………22
10. Additional requirements for explosion-proof enclosure"d"……………………23
10.1 Solid barrier ………………………………………………………………………23
10.2 Protection Of Explosion-Proof Surface……………………………………………23
10.3 Cable introducing system…………………………………………………………24
10.4 Motor Powered By Frequency Conversion And Voltage Adjustment Power Supply…26
10.5 Conduit system……………………………………………………………………26
11. Complementary requirements for safety-increasing "e" explosion-proof type…26
11.1 Protective class of enclosure………………………………………………………26
11.2 Squirrel-cage induction motor—thermal protection during operation……………26
11.3 Wiring system……………………………………………………………………27
11.4 Resistance heater…………………………………………………………………28
12. Additional requirements for intrinsic-safety "i" ………………………………29
12.1 Introduction………………………………………………………………………29
12.2. Installation in Zone 1 and Zone 2…………………………………………………29
12.3 Installation in Zone 0………………………………………………………………36
13. Complementary requirements for electrical apparatus of positive-pressure
type "p" ………………………………………………………………………37
13.1 Piping……………………………………………………………………………37
13.2 Measures To Be Taken For Positive-Pressure Failure……………………………38
13.3 Multiple positive-pressure enclosures sharing one safety device………………38
13.4 Purge……………………………………………………………………………39
14. Complementary requirements for equipment used in Zone 2………………39
14.1 Protective class of enclosure……………………………………………………39
14.2 Energy limiting device and circuit………………………………………………39
14.3 Wiring system……………………………………………………………………40
14.4 Motor powered by frequency conversion and voltage adjustment power supply…40
Appendix A (Appendix for this Standard) Inspection of intrinsic-safety circuit for
associated apparatus characterized by more than one linear current/voltage………41
Appendix B (appendix for the prompt) Measurement methods of maximum current
and maximum voltage for intrinsic-safety circuit system of associated apparatus
characterized by more than one linear current/voltage………………………………4
1. Scope
This Standard defines the specific requirements for the design, selection and mounting of electrical installations in explosive gas atmospheres. These requirements are complementary to the requirements for electrical installations in non-hazardous areas.
This Standard applies to all electrical equipment and installations in hazardous areas whether permanent, temporary, movable, transportable or hand-held.
This Standard does not apply to:
— electrical installations under the shaft of mines;
Note： This standard may apply to electrical installations under the shaft of mines with other explosive gas other than firedamp and electrical installations on the ground of mines.
— electrical installations in areas where the hazard is due to combustible dusts or fibres;
— inherently explosive situations, for example explosive manufacturing and processing;
— room used for medical purpose.
2．Normative References
The provisions contained in the following standards are cited as the provisions of this Standard. All the shown editions shall be deemed as valid when this Standard is published. The following standards are subject to revision, so the parties adopting this Standard shall explore the possibility of using the following updated edition.
GB/T 2900.35—1998 Electrotechnical terms for Electrical Apparatus
In Explosive Atmospheres (neq IEC60050(426):1990)
GB3836.1—2000 Electrical Apparatus for Explosive Atmospheres
— Part 1: General Requirements (eqv IEC60079-0:1998)
GB3836.2—2000 Electrical Apparatus for Explosive Gas Atmospheres
— Part 2: Structure and Test of Explosion-Proof Enclosure of Electrical Apparatus (eqv IEC 60079-1:1990)
GB3836.3—2000 Electrical Apparatus for Explosive Gas Atmospheres
— Part 3: Safety-increasing Type "e" (eqv IEC 60079-7:1990)
GB3836.4—2000 Electrical Apparatus for Explosive Gas Atmospheres
— Part 4: Intrinsic-Safety Type "i" (eqv IEC60079-11: 1999)
GB3836.14—2000 Electrical Apparatus for Explosive Gas Atmospheres
— Part 14: Classification of Hazardous Areas (idt IEC60079-10: 1995)
GB4208—1993 Enclosure Protective Grade (IP code) (eqv IEC60529;1989)
GB/T 14823.1—1993 Specific Requirements for Conduits of Electrical Installations-
Metal Conduit (eqv IEC60614-2-1:1982)
GB/T 4942.1—1985 Enclosure Protective Grade of Motor (neq IEC60034-5: 1981)
GB6829—1995 General Requirements for Residual Current Action Protector
( eqv IEC60755:1983)
GB/T 12666.2—1990 Wires & Cables Combustion Test Methods Part 2: Single Wire & Cable Vertical Combustion Test Method (eqv IEC60332-1: 1979)
GB13028-1991 Technical Requirements for Isolation Transformer And Safety Isolation Transformer (eqv IEC 60742:1983)
GB/T16927.1—1997 High-Voltage Test Technology --Part 1: General Test Requirements (eqv IEC 60060-1:1989)
IEC 60079-2:1983 Electrical Apparatus for Explosive Gas Atmospheres
Part 2: Positive-pressure Type "p"
IEC 60079-5:1997 Electrical Apparatus for Explosive Gas Atmospheres
Part 5: Powder filling "q"
IEC 60079-6:1995 Electrical Apparatus for Explosive Gas Atmospheres
Part 6: Oil -immersion "o"
IEC 60079-15:1987 Electrical Apparatus for Explosive Gas Atmospheres
Part 15: Type "n" electrical apparatus
IEC 60079-17:1990 Electrical Apparatus for Explosive Gas Atmospheres
Part 17: Inspection and Maintenance of Electrical Installations in Hazardous Areas (other than mines)
IEC 60079-18:1992 Electrical Apparatus for Explosive Gas Atmospheres
Part 18: Pouring seal "m"
IEC60614-2-5: 1992 Technical Requirements for Conduits of Electrical
Installations —Part 2: Specific Requirements for Conduits—Section 5: Flexible Conduits
3 Definition
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