GB/T 3836.1-2021 PDF English
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| GB/T 3836.1-2021 | English | 1405 |
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Explosive atmospheres - Part 1: Equipment - General requirements
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| GB 3836.1-2010 | English | 150 |
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[Replaced by GB/T 3836.1-2021] Explosive atmospheres -- Part 1: Equipment -- General requirements
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| GB 3836.1-2000 | English | RFQ |
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Electrical apparatus for explosive gas atmospheres-Part 1: General requirements
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| GB 3836.1-1983 | English | RFQ |
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Electrical apparatus for explosive atmosphere--General requirements
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GB/T 3836.1-2021: Explosive atmospheres - Part 1: Equipment - General requirements---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3836.1-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.260.20
CCS K 35
Replacing GB 3836.1-2010, GB 12476.1-2013
Explosive Atmospheres – Part 1.Equipment – General
Requirements
(IEC 60079-0.2017, Explosive Atmospheres
– Part 0.Equipment – General Requirements, MOD)
Issued on: OCTOBER 11, 2021
Implemented on: MAY 01, 2022
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 4
Introduction... 13
1 Scope... 16
2 Normative References... 19
3 Terms and Definitions... 22
4 Equipment Grouping... 40
5 Temperatures... 41
6 Requirements for All Equipment... 47
7 Non-Metallic Enclosures and Non-Metallic Parts of Enclosures... 51
8 Metallic Enclosures and Metallic Parts of Enclosures... 61
9 Fasteners... 63
10 Interlocking Devices... 66
11 Bushings... 66
12 (Reserved for Future Use)... 66
13 Ex Components... 66
14 Connection Facilities... 67
15 Connection Facilities for Earthing or Bonding Conductors... 68
16 Entries into Enclosures... 70
17 Supplementary Requirements for Electric Machines... 73
18 Supplementary Requirements for Switchgear... 77
19 Supplementary Requirements for Fuse... 79
20 Supplementary Requirements for External Plugs, Socket Outlets and
Connectors for Field Wiring Connection... 79
21 Supplementary Requirements for Luminaires... 80
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for
Standardization – Part 1.Rules for the Structure and Drafting of Standardizing
Documents.
This Document is Part 1 of GB/T 3836 Explosive Atmospheres. GB/T 3836 has
published the following parts.
--- Part 1.Equipment – General Requirements;
--- Part 2.Equipment Protection by Flameproof Enclosure “d”;
--- Part 3.Equipment Protection by Increased Safety “e”;
--- Part 4.Equipment Protection by Intrinsic Safety “i”;
--- Part 5.Equipment Protection by pressurized Enclosure “p”;
--- Part 6.Equipment Protection by Liquid Immersion “o”;
--- Part 7.Equipment Protection by Powder Filling “q”;
--- Part 8.Equipment Protection by Type of Protection “n”;
--- Part 9.Equipment Protection by Encapsulation “m”;
--- Part 11.Material Characteristics for Gas and Vapour Classification - Test
Methods and Data;
--- Part 12.Material Characteristics for Combustible Dusts - Test Methods;
--- Part 13.Equipment Repair, Overhaul, Reclamation and Modification;
--- Part 14.Classification of Areas - Explosive Gas Atmosphere;
--- Part 15.Electrical Installations Design, Selection and Erection;
--- Part 16.Electrical Installations Inspection and Maintenance;
--- Part 17.Equipment Protection by Pressurized Room “p” and Artificially Ventilated
Room “v”;
--- Part 18.Intrinsically Safe Electrical Systems;
--- Part 20.Equipment with Equipment Protection Level (EPL) Ga;
--- Part 21.Application of Quality Systems for Equipment Manufacture;
--- Part 22.Protection of Equipment and Transmission System Using Optical
Radiation;
--- Part 23.Group I, Category EPL Ma Equipment Intended to Remain Functional in
Atmospheres Endangered by Firedamp and/or Coal Dust;
--- Part 24.Equipment Protection by Special Protection “s”;
--- Part 25.Requirements for Process Sealing between Flammable Process Fluids
and Electrical Systems;
--- Part 26.Electrostatic Hazards – Guidance;
--- Part 27.Electrostatic Hazards – Test;
--- Part 28.Non-Electrical Equipment for Explosive Atmospheres - Basic Method
and Requirements;
--- Part 29.Non-Electrical Equipment for Explosive Atmospheres - Constructional
Safety “c”, Control of Ignition Source “b”, Liquid Immersion “k”;
--- Part 30.Equipment and Components in Explosive Atmospheres in Underground
Mines;
--- Part 31.Equipment Dust Ignition Protection by Enclosure “t”;
--- Part 32.Intrinsically Safe Systems with Electronically Controlled Spark Duration
Limitation;
--- Part 33.Equipment in Adverse Service Conditions;
--- Part 34.Equipment Assemblies;
--- Part 35.Classification of Areas for Explosive Dust Atmospheres.
This Document replaced GB 3836.1-2010 Explosive Atmospheres - Part 1.Equipment
- General Requirement and GB 12476.1-2013 Electrical Apparatus for Use in the
Presence of Combustible Dust - Part 1.General Requirements. Mainly based on GB
3836.1-2010, this Document integrates the major contents of GB 12476.1-2013; the
major technical changes of this Document, except the structural adjustments and
editorial modifications, are as follows.
--- Integrate the requirements of equipment for combustible dust environment;
--- Change the maximum surface temperature requirements of Group III electrical
equipment (see 5.3.2.3 of this Edition; 5.3.2.3 of 2010 Edition);
--- Increase the requirements for liner retention and the use of cement (see 6.5 of
this Edition);
--- Change the requirements of the ultrasonic source (see 6.6.3 of this Edition; 6.6.3
of 2010 Edition);
--- Change the requirements for lasers, lamps or other non-divergent continuous
wave light sources (see 6.6.4 of this Edition; 6.6.2 of 2010 Edition);
--- Increase the replacement requirements of O-shaped elastic sealing ring (see
7.2.3 of this Edition);
--- Change the electrostatic charge requirements on external non-metallic materials
(see 7.4 of this Edition; 7.4 of 2010 Edition);
---Add the requirements for ancillary external metal parts (see 7.5 of this Edition);
--- Increase the requirements for the use of copper alloys for the enclosure (see 8.5
of this Edition);
---Add the requirements of Ex component explosion-proof certificate (see 13.5 of
this Edition);
---Add the requirements for cable entry devices, blanking elements, and threaded
pipe joints (see 16.3~16.5 of this Edition);
--- Change the supplementary requirements for rotating electrical machines (see
Clause 17 of this Edition; Clause 17 of 2010 Edition);
--- Change the supplementary requirements for plugs, sockets and connectors (see
Clause 20 of this Edition; Clause 20 of 2010 Edition);
--- Increase the types of single cells that can be used (see 23.3 of this Edition);
--- Change the temperature measurement test (see 26.5.1 of this Edition; 26.5.1 of
2010 Edition);
--- Change the heat resistance test (see 26.8 of this Edition; 26.8 of 2010 Edition);
--- Change the ultraviolet (UV) resistance test (see 26.10 of this Edition; 26.10 of
2010 Edition);
--- Delete the electrification test (see 26.14 of 2010 Edition);
--- Change the capacitance measurement test (see 26.14 of this Edition; 26.15 of
2010 Edition);
--- Increase fan rating verification (see 26.15 of this Edition);
Explosive Atmospheres – Part 1.Equipment – General
Requirements
1 Scope
This Document specifies the general requirements for construction, testing and
marking of Ex Equipment and Ex Components intended for use in explosive
atmospheres.
This Document applies to equipment intended to be used in an explosive gas
atmospheres or an explosive dust atmospheres, including the equipment specified by
the supplementary documents listed in this Document, as a general requirement when
these equipment are used in an explosive atmospheres.
2 Normative References
The provisions in following documents become the provisions of this Document
through reference in this Document. For the dated documents, only the versions with
the dates indicated are applicable to this Document; for the undated documents, only
the latest version (including all the amendments) is applicable to this Document.
GB/T 70.1 Hexagon Socket Head Cap Screws (GB/T 70.1-2008, ISO 4762.2004,
MOD)
GB/T 70.2 Hexagon Socket Button Head Screws (70.2-2015, ISO 7380-1.2011,
MOD)
GB/T 70.4 Hexagon Socket Button Head Screws with Collar (70.4-2015, ISO
7380-2.2011, MOD)
GB/T 77 Hexagon Socket Set Screws with Flat Point (GB/T 77-2007, ISO
4026.2003, MOD)
GB/T 78 Hexagon Socket Set Screws with Cone Point (GB/T 78-2007, ISO
4027.2003, MOD)
GB/T 79 Hexagon Socket Set Screws with Dog Point (GB/T 79-2007, ISO
4028.2003, MOD)
GB/T 80 Hexagon Socket Set Screws with Cup Point (GB/T 80-2007, ISO
4029.2003, MOD)
GB/T 197 General Purpose Metric Screw Threads – Tolerance (GB/T 197-2018,
ISO 965-1.2013, MOD)
GB/T 755 Rotating Electrical Machines - Rating and Performance (GB/T 755-
2019, IEC 60034-1.2017, IDT)
GB/T 1040.2 Plastics - Determination of Tensile Properties - Part 2.Test
Conditions for Moulding and Extrusion Plastics (GB/T 1040.2-2006, ISO 527-
2.1993, IDT)
GB/T 1043 (all parts) Plastics - Determination of Charpy Impact Properties [ISO
179 (all parts)]
GB/T 1408.1 Electrical Strength of Insulating Materials - Test Methods - Part 1.
Tests at Power Frequencies (GB/T 1408.1-2016, IEC 60243-1.2013, IDT)
GB/T 1408.2 Electrical Strength of Insulating Materials - Test Methods - Part 2.
Additional Requirements for Tests Using Direct Voltage (GB/T 1408.2-2016, IEC
3 Terms and Definitions
For the purposes of this Document, the following terms and definitions apply.
3.1 Ambient temperature
Temperature of the air or other media, in the immediate vicinity of the equipment or
component.
3.2 Hazardous area
Area in which an explosive atmosphere is present, or may be expected to be present,
in quantities such as to require special precautions for the construction, installation and
use of equipment.
4 Equipment Grouping
4.1 General
Equipment for explosive atmospheres is divided into groups as shown in 4.2, 4.3, and
4.4.
4.2 Group I
Equipment of Group I is intended for use in mines susceptible to firedamp.
Equipment intended for mines where the atmosphere, in addition to firedamp, may
contain significant proportions of other flammable gases (i.e., other than methane),
shall be constructed and tested in accordance with the requirements relating to Group
I and also to the subdivision of Group II corresponding to the other significant
flammable gases.
4.3 Group II
Equipment of Group II is intended for use in areas with an explosive gas atmosphere
other than mines susceptible to firedamp.
Equipment of Group II is subdivided according to the nature of the explosive gas
atmosphere for which it is intended.
5 Temperatures
5.1 Environmental influences
5.1.1 Ambient temperature
Equipment designed for use in a normal ambient temperature range of -20 °C to +40 °C
does not require marking of the ambient temperature range. However, equipment
designed for use in other than this normal ambient temperature range is considered to
be special. The marking shall then include either the symbol Ta or Tamb together with
both the upper and lower ambient temperatures or, if this is impracticable, the symbol
“X” shall be used to indicate specific conditions of use that include the upper and lower
ambient temperatures. See item e) of 29.3 and Table 1.
5.1.2 External source of heating or cooling
Where the equipment is intended to be physically connected to or influenced by a
separate external source of heating or cooling, such as a heated or cooled process
vessel or pipeline, the ratings of the external source shall be specified in the certificate
and in the manufacturer’s instructions.
6 Requirements for All Equipment
6.1 General
The requirements of this standard, together with one or more of the specific standards
listed in Clause 1, are in addition to the applicable safety requirements of the relevant
industrial standards.
6.2 Mechanical strength of equipment
The equipment shall be subjected to the tests of 26.4.Guards relied upon to provide
protection from impact shall be removable only by the use of a tool and shall remain in
place for the required impact tests.
7 Non-Metallic Enclosures and Non-Metallic Parts of
Enclosures
7.1 General
7.1.1 Applicability
The requirements given in this clause and in 26.7 shall apply to non-metallic
enclosures and non-metallic parts of enclosures, on which the Type of Protection
depends.
7.1.2 Specification of materials
7.1.2.1 General
The documents according to Clause 24 shall specify the material of the enclosure or
part of the enclosure.
7.2 Thermal endurance
7.2.1 Tests for thermal endurance
The tests for endurance to heat and to cold shall be conducted in accordance with 26.8
and 26.9.See also Order of tests, 26.4.1.
8 Metallic Enclosures and Metallic Parts of Enclosures
8.1 Material composition
The documents according to Clause 24 shall specify the material of the enclosure or
part of the enclosure.
8.2 Group I
Materials used in the construction of enclosures of Group I equipment of EPL Ma or
Mb shall not contain, by mass, more than.
--- 15 % in total of aluminium, magnesium, titanium and zirconium, with no more
than 7.5 % in total of magnesium, titanium and zirconium.
9 Fasteners
9.1 General
Parts necessary to achieve a specific Type of Protection or used to prevent access to
uninsulated live parts shall be capable of being released or removed only with the aid
of a tool such as a key, screwdriver, or wrench.
Fastening screws for enclosures of materials containing aluminium, magnesium,
titanium or zirconium may be made of aluminium, magnesium, titanium, zirconium, or
non-metallic material if the material of the fastener is compatible with that of the
enclosure.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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