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GB/T 3836.2-2021   Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d” (English Version)
Standard No.: GB/T 3836.2-2021 Status:valid remind me the status change

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Standard No.: GB/T 3836.2-2021
English Name: Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d”
Chinese Name: 爆炸性环境 第2部分:由隔爆外壳“d”保护的设备
Chinese Classification: K35    Explosion-proof electric apparatus
Professional Classification: GB    National Standard
ICS Classification: 29.260.20 29.260.20    Electrical apparatus for explosive atmospheres 29.260.20
Issued by: SAMR; SAC
Issued on: 2021-10-11
Implemented on: 2022-5-1
Status: valid
Superseding:GB 3836.2-2010 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures“d”
Language: English
File Format: PDF
Word Count: 35000 words
Price(USD): 1020.0
Delivery: via email in 1 business day
GB/T 3836.2-2021 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d” English 1 Scope This standard contains specific requirements for the construction and testing of electrical equipment with the type of protection flameproof enclosure “d”, intended for use in explosive gas atmospheres. This standard is applicable to electrical equipment protected by flameproof enclosure "d" to be used in explosive atmospheres. This standard supplements and modifies the general requirements of GB/T 3836.1. Where a requirement of this standard conflicts with a requirement of GB/T 3836.1, the requirement of this standard will take precedence. 2 Normative references The following documents, in whole or in part, are normatively referenced in this standard and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 197 General purpose metric screw threads—Tolerances (GB/T 197-2018, ISO 965-1: 2013, MOD) GB/T 1406.2 Types and dimensions of lamp caps—Part 2: Pin lamp caps (GB/T 1406.2-2008, IEC 60061-1: 2005, MOD) GB/T 2516 General purpose metric screw threads—Limit deviations (GB/T 2516-2003, ISO 965-3: 1998, MOD) GB/T 3836.1 Explosive atmospheres—Part 1: Equipment—General requirements (GB/T 3836.1-2021, IEC 60079-0: 2017, MOD) GB/T 3836.3 Explosive atmospheres—Part 3: Equipment protection by increased safety "e” (GB/T 3836.3-2021, IEC 60079-7: 2015, MOD) GB/T 3836.4 Explosive atmospheres—Part 4: Equipment protection by intrinsic safety "i” (GB/T 3836.4-2021, IEC 60079-11: 2011, MOD) GB/T 3836.8 Explosive atmospheres—Part 8: Equipment protection by type of protection “n” (GB/T 3836.8-2021, IEC 60079-15: 2017, MOD) GB/T 5163 Sintered metal materials, excluding hardmetals—Permeable sintered metal materials—Determination of density, oil content, and open porosity (GB/T 5163-2006, ISO 2738: 1999, IDT) GB/T 5249 Permeable sintered metal materials—Determination of bubble test pore size (GB/T 5249-2013, ISO 4003: 1977, IDT) GB/T 5250 Permeable sintered metal materials—Determination of fluid permeability (GB/T 5250-2014, ISO 4022: 1987, IDT) GB/T 9364 (all parts) Miniature fuses [IEC 60127 (all parts)] GB/T 19148.2 Types and dimensions of lampholders—Part 2: Pin lampholders (GB/T 19148.2-2008, IEC 60061-2: 2004, MOD) ANSI/ASME B1.20.1 Pipe threads, general purpose (inch) 3 Terms and definitions For the purposes of this standard, the terms and definitions given in GB/T 3836.1 and the following apply. Note: Additional definitions applicable to explosive atmospheres can be found in GB/T 2900.35. 3.1 flameproof enclosure “d” enclosure in which the parts which can ignite an explosive gas atmosphere are placed and which can withstand the pressure developed during an internal explosion of an explosive mixture, and which prevents the transmission of the explosion to the explosive gas atmosphere surrounding the enclosure Note: "Flameproof type" is defined as an explosion-proof type of electrical equipment in which the enclosure can withstand the explosion of an explosive mixture entering the interior of the enclosure through any joint surface or structural gap of the enclosure without damage, and does not cause ignition of an explosive atmospheres formed by one or more gases or vapors outside. The two terms have the same meaning. 3.2 volume total internal volume of the enclosure Note 1: For enclosures in which the contents are essential in service, the volume to be considered is the remaining free volume. Note 2: For luminaries, the volume is determined without lamps fitted. 3.3 flameproof joint or flamepath place where the corresponding surfaces of two parts of an enclosure, or the conjunction of enclosures, come together and which prevents the transmission of an internal explosion to the explosive gas atmosphere surrounding the enclosure 3.4 width of flameproof joint L shortest path through a flameproof joint from the inside to the outside of an enclosure Note: This definition does not apply to threaded joints. 3.5 distance l shortest path through a flameproof joint, when the width of the flameproof joint L is interrupted by holes intended for the passage of fasteners for assembling the parts of the flameproof enclosure 3.6 gap of flameproof joint i distance between the corresponding surfaces of a flameproof joint when the electrical apparatus enclosure has been assembled Note: For cylindrical surfaces, forming cylindrical joints, the gap is the difference between the diameters of the bore and the cylindrical component. 3.7 maximum experimental safe gap (for an explosive mixture) MESG maximum gap of a joint of 25 mm in width which prevents any transmission of an explosion during 10 tests made under the conditions specified in GB/T 3836.11 3.8 shaft part of circular cross-section used for the transmission of rotary movement 3.9 operating rod part used for the transmission of control movements which may be rotary or linear or a combination of the two 3.10 pressure-piling results of an ignition, in a compartment or subdivision of an enclosure, of a gas mixture pre-compressed, for example, due to a primary ignition in another compartment or subdivision 3.11 quick-acting door or cover door or cover provided with a device which permits opening or closing by a simple operation, such as the movement of a lever or the rotation of a wheel Note: The device is arranged so that the operation has two stages: ——one for locking or unlocking, and ——another for opening or closing. 3.12 door or cover fixed by threaded fasteners door or cover, the opening or closing of which requires the manipulation of one or more threaded fasteners (screws, studs, bolts or nuts) 3.13 threaded door or cover door or cover which is assembled to a flameproof enclosure by a threaded flameproof joint 3.14 breathing device device which permits an exchange between the atmosphere within an enclosure and the surrounding atmosphere and which maintains the integrity of the type of protection 3.15 draining device device which permits liquids to flow out from an enclosure and which maintains the integrity of the type of protection 3.16 Ex equipment blanking element blanking elements that are tested separately from the equipment enclosure, have an equipment certificate, and are intended to be fitted to the equipment enclosure without further consideration Note 1: This does not preclude a component certificate for Ex component blanking elements in accordance with GB/T 3836.1. Examples of blanking elements are shown in Figure C.1. Note 2: Non-threaded blanking elements are not equipment for Group II applications. 3.17 Ex equipment thread adapter thread adapter tested separately from the enclosure but having an equipment certificate and which is intended to be fitted to the equipment enclosure without further consideration Note: This does not preclude a component certificate for Ex component thread adapters in accordance with GB/T 3836.1. Examples of thread adapters are shown in Figure C.3. 3.18 Ex component enclosure empty flameproof enclosure provided with an Ex component certificate, without the internal equipment being defined, so as to enable the empty enclosure to be made available for incorporation into an equipment certificate without the need for repetition of type testing
Foreword i Introduction ix 1 Scope 2 Normative references 3 Terms and definitions 4 Level of protection (equipment protection level, EPL) 5 Flameproof joints 6 Sealed joints 7 Operating rods 8 Supplementary requirements for shafts and bearings 9 Light-transmitting parts 10 Breathing and draining devices which form part of a flameproof enclosure 11 Fasteners and openings 12 Materials 13 Entry devices for flameproof enclosures 14 Verification and tests 15 Type tests 16 Routine tests 17 Switchgear for Group I 18 Lampholders and Iamp caps 19 Non-metallic enclosures and non-metallic parts of enclosures 20 Marking 21 Instructions Annex A (Normative) Additional requirements for crimped ribbon elements and multiple screen elements of breathing and draining devices Annex B (Normative) Additional requirements for elements, with non-measurable paths of breathing and draining devices Annex C (Normative) Additional requirements for flameproof enclosure entry devices Annex D (Normative) Empty flameproof enclosures as Ex components Annex E (Normative) Cells and batteries used in flameproof enclosures Annex F (Informative) Mechanical properties for screws and nuts Annex G (Normative) Additional requirements for flameproof enclosures with an internal source of release (containment system) Annex H (Normative) Requirements for machines with flameproof “d” enclosures fed from converters Annex I (Normative) Supplementary requirements for Group I electrical equipment Annex J (Informative) Examples of supplemental mechanical means of securing the cemented joint Bibliography
Referred in GB/T 3836.2-2021:
*GB/T 197-2018 General purpose metric screw threads—Tolerances
*GB/T 1406.2-2008 Types and dimentions of lamp caps - Part 2:Pin lamp caps
*GB/T 2516-2023 General purpose metric screw threads—Limit deviations
*GB/T 3836.1-2021 Explosive atmospheres—Part 1:Equipment—General requirements
*GB/T 3836.3-2021 Explosive atmospheres—Part 3:Equipment protection by increased safety“e”
*GB/T 3836.4-2021 Explosive atmospheres—Part 4:Equipment protection by intrinsic safety“i”
*GB/T 3836.8-2021 Explosive atmospheres—Part 8: Equipment protection by type of protection “n”
*GB/T 5163-2006 Sintered metal materials,excluding hardmetals - Permeable sintered metal materials - Determination of density,oil content,and open porosity
*GB/T 5249-2013 Permeable sintered metal materials—Determination of bubble test pore size
*GB/T 5250-2014 Permeable sintered metal materials―Determination of fluid permeability
*GB/T 755-2019 Rotating electrical machines—Rating and performance
*GB/T 1031-2009 Geometrical product specifications(GPS) - Surface texture: Profile method - Surface roughness parameters and their values
*GBT2828.1-2012Sampling
*GB/T 2900.35-2023 Electrotechnical terminology—Explosive atmospheres
*GB3836-
*GB/T 3836.11-2022 Explosive atmospheres—Part 11:Material characteristics for gas and vapour classification—Test methods and data
*GB/T 3836.15-2017 Explosive atmospheres—Part 15: Electrical installations design, selection and erection
*GB/T 4207-2022 Method for the determination of the proof and the comparative tracking indices of solid insulating materials
*GB/T 8897.1-2021 Primary batteries—Part 1: General
*GB/T 9439-2023 Grey iron castings
*GB/T 15142-2011 Secondary cells and batteries containing alkaline or other non-acid electrolytes—Vented nickel-cadmium prismatic rechargeable single cells
*GBT20438-
*GB/T 22084.1-2008 Secondary cells and batteries containing alkaline or other non-acid electrolytes - Portable sealed rechargeable single cells - Part 1:Nickel-cadmium
*GB/T 22084.2-2024 Secondary cells and batteries containing alkaline or other non-acid electrolytes—Secondary sealed cells and batteries for portable applications—Part 2: Nickel-metal hydride
*GB/T 28867-2012 Secondary cells and batteries containing alkaline or other non-acid electrolytes - Sealed nickel-cadmium prismatic rechargeable single cells
*GB/T 30426-2013 Secondary Cells and Batteries Containing Alkaline or Other Non-acid Electrolytes - Secondary Lithium Cells and Batteries for Portable Applications
GB/T 3836.2-2021 is referred in:
*GB/T 3836.3-2021 Explosive atmospheres—Part 3:Equipment protection by increased safety“e”
*GB/T 3836.9-2021 Explosive atmospheres—Part 9:Equipment protection by encapsulation “m”
*QB/T 2673-2004 Leather shoes -- Rules for determination of the suitability
*QB/T 2673-2013 Specification for marking of footwear
*QB/T 2673-2023 The labeling for footwear product
*GB/T 1222-1984 Spring steels
*GB/T 1222-2016 Spring steels
*QB/T 1286-1991 Sheared sheepskin
*GB/T 8427-1987 Textiles--Testing method for colour fastness to light: Xenon arc
*GB/T 8427-1998 Textiles-Tests for colour fastness Colour fastness to artificial light: Xenon arc fading lamp test
*GB/T 18604-2023 Measurement of natural gas flow by gas ultrasonic flow meters
*GB 5908-2024 Flame arrester
*GB 18245-2024 Safety specification for dust explosion prevention and protection in tobacco processing system
*GB/T 3836.13-2021 Explosive atmospheres—Part 13: Equipment repair, overhaul, reclamation and modification
*GB/T 3836.28-2021 Explosive atmospheres—Part 28:Non-electrical equipment for explosive atmospheres—Basic method and requirements
Code of China
Standard
GB/T 3836.2-2021  Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d” (English Version)
Standard No.GB/T 3836.2-2021
Statusvalid
LanguageEnglish
File FormatPDF
Word Count35000 words
Price(USD)1020.0
Implemented on2022-5-1
Deliveryvia email in 1 business day
Detail of GB/T 3836.2-2021
Standard No.
GB/T 3836.2-2021
English Name
Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d”
Chinese Name
爆炸性环境 第2部分:由隔爆外壳“d”保护的设备
Chinese Classification
K35
Professional Classification
GB
ICS Classification
Issued by
SAMR; SAC
Issued on
2021-10-11
Implemented on
2022-5-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB 3836.2-2010 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures“d”
Language
English
File Format
PDF
Word Count
35000 words
Price(USD)
1020.0
Keywords
GB/T 3836.2-2021, GB 3836.2-2021, GBT 3836.2-2021, GB/T3836.2-2021, GB/T 3836.2, GB/T3836.2, GB3836.2-2021, GB 3836.2, GB3836.2, GBT3836.2-2021, GBT 3836.2, GBT3836.2
Introduction of GB/T 3836.2-2021
GB/T 3836.2-2021 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d” English 1 Scope This standard contains specific requirements for the construction and testing of electrical equipment with the type of protection flameproof enclosure “d”, intended for use in explosive gas atmospheres. This standard is applicable to electrical equipment protected by flameproof enclosure "d" to be used in explosive atmospheres. This standard supplements and modifies the general requirements of GB/T 3836.1. Where a requirement of this standard conflicts with a requirement of GB/T 3836.1, the requirement of this standard will take precedence. 2 Normative references The following documents, in whole or in part, are normatively referenced in this standard and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 197 General purpose metric screw threads—Tolerances (GB/T 197-2018, ISO 965-1: 2013, MOD) GB/T 1406.2 Types and dimensions of lamp caps—Part 2: Pin lamp caps (GB/T 1406.2-2008, IEC 60061-1: 2005, MOD) GB/T 2516 General purpose metric screw threads—Limit deviations (GB/T 2516-2003, ISO 965-3: 1998, MOD) GB/T 3836.1 Explosive atmospheres—Part 1: Equipment—General requirements (GB/T 3836.1-2021, IEC 60079-0: 2017, MOD) GB/T 3836.3 Explosive atmospheres—Part 3: Equipment protection by increased safety "e” (GB/T 3836.3-2021, IEC 60079-7: 2015, MOD) GB/T 3836.4 Explosive atmospheres—Part 4: Equipment protection by intrinsic safety "i” (GB/T 3836.4-2021, IEC 60079-11: 2011, MOD) GB/T 3836.8 Explosive atmospheres—Part 8: Equipment protection by type of protection “n” (GB/T 3836.8-2021, IEC 60079-15: 2017, MOD) GB/T 5163 Sintered metal materials, excluding hardmetals—Permeable sintered metal materials—Determination of density, oil content, and open porosity (GB/T 5163-2006, ISO 2738: 1999, IDT) GB/T 5249 Permeable sintered metal materials—Determination of bubble test pore size (GB/T 5249-2013, ISO 4003: 1977, IDT) GB/T 5250 Permeable sintered metal materials—Determination of fluid permeability (GB/T 5250-2014, ISO 4022: 1987, IDT) GB/T 9364 (all parts) Miniature fuses [IEC 60127 (all parts)] GB/T 19148.2 Types and dimensions of lampholders—Part 2: Pin lampholders (GB/T 19148.2-2008, IEC 60061-2: 2004, MOD) ANSI/ASME B1.20.1 Pipe threads, general purpose (inch) 3 Terms and definitions For the purposes of this standard, the terms and definitions given in GB/T 3836.1 and the following apply. Note: Additional definitions applicable to explosive atmospheres can be found in GB/T 2900.35. 3.1 flameproof enclosure “d” enclosure in which the parts which can ignite an explosive gas atmosphere are placed and which can withstand the pressure developed during an internal explosion of an explosive mixture, and which prevents the transmission of the explosion to the explosive gas atmosphere surrounding the enclosure Note: "Flameproof type" is defined as an explosion-proof type of electrical equipment in which the enclosure can withstand the explosion of an explosive mixture entering the interior of the enclosure through any joint surface or structural gap of the enclosure without damage, and does not cause ignition of an explosive atmospheres formed by one or more gases or vapors outside. The two terms have the same meaning. 3.2 volume total internal volume of the enclosure Note 1: For enclosures in which the contents are essential in service, the volume to be considered is the remaining free volume. Note 2: For luminaries, the volume is determined without lamps fitted. 3.3 flameproof joint or flamepath place where the corresponding surfaces of two parts of an enclosure, or the conjunction of enclosures, come together and which prevents the transmission of an internal explosion to the explosive gas atmosphere surrounding the enclosure 3.4 width of flameproof joint L shortest path through a flameproof joint from the inside to the outside of an enclosure Note: This definition does not apply to threaded joints. 3.5 distance l shortest path through a flameproof joint, when the width of the flameproof joint L is interrupted by holes intended for the passage of fasteners for assembling the parts of the flameproof enclosure 3.6 gap of flameproof joint i distance between the corresponding surfaces of a flameproof joint when the electrical apparatus enclosure has been assembled Note: For cylindrical surfaces, forming cylindrical joints, the gap is the difference between the diameters of the bore and the cylindrical component. 3.7 maximum experimental safe gap (for an explosive mixture) MESG maximum gap of a joint of 25 mm in width which prevents any transmission of an explosion during 10 tests made under the conditions specified in GB/T 3836.11 3.8 shaft part of circular cross-section used for the transmission of rotary movement 3.9 operating rod part used for the transmission of control movements which may be rotary or linear or a combination of the two 3.10 pressure-piling results of an ignition, in a compartment or subdivision of an enclosure, of a gas mixture pre-compressed, for example, due to a primary ignition in another compartment or subdivision 3.11 quick-acting door or cover door or cover provided with a device which permits opening or closing by a simple operation, such as the movement of a lever or the rotation of a wheel Note: The device is arranged so that the operation has two stages: ——one for locking or unlocking, and ——another for opening or closing. 3.12 door or cover fixed by threaded fasteners door or cover, the opening or closing of which requires the manipulation of one or more threaded fasteners (screws, studs, bolts or nuts) 3.13 threaded door or cover door or cover which is assembled to a flameproof enclosure by a threaded flameproof joint 3.14 breathing device device which permits an exchange between the atmosphere within an enclosure and the surrounding atmosphere and which maintains the integrity of the type of protection 3.15 draining device device which permits liquids to flow out from an enclosure and which maintains the integrity of the type of protection 3.16 Ex equipment blanking element blanking elements that are tested separately from the equipment enclosure, have an equipment certificate, and are intended to be fitted to the equipment enclosure without further consideration Note 1: This does not preclude a component certificate for Ex component blanking elements in accordance with GB/T 3836.1. Examples of blanking elements are shown in Figure C.1. Note 2: Non-threaded blanking elements are not equipment for Group II applications. 3.17 Ex equipment thread adapter thread adapter tested separately from the enclosure but having an equipment certificate and which is intended to be fitted to the equipment enclosure without further consideration Note: This does not preclude a component certificate for Ex component thread adapters in accordance with GB/T 3836.1. Examples of thread adapters are shown in Figure C.3. 3.18 Ex component enclosure empty flameproof enclosure provided with an Ex component certificate, without the internal equipment being defined, so as to enable the empty enclosure to be made available for incorporation into an equipment certificate without the need for repetition of type testing
Contents of GB/T 3836.2-2021
Foreword i Introduction ix 1 Scope 2 Normative references 3 Terms and definitions 4 Level of protection (equipment protection level, EPL) 5 Flameproof joints 6 Sealed joints 7 Operating rods 8 Supplementary requirements for shafts and bearings 9 Light-transmitting parts 10 Breathing and draining devices which form part of a flameproof enclosure 11 Fasteners and openings 12 Materials 13 Entry devices for flameproof enclosures 14 Verification and tests 15 Type tests 16 Routine tests 17 Switchgear for Group I 18 Lampholders and Iamp caps 19 Non-metallic enclosures and non-metallic parts of enclosures 20 Marking 21 Instructions Annex A (Normative) Additional requirements for crimped ribbon elements and multiple screen elements of breathing and draining devices Annex B (Normative) Additional requirements for elements, with non-measurable paths of breathing and draining devices Annex C (Normative) Additional requirements for flameproof enclosure entry devices Annex D (Normative) Empty flameproof enclosures as Ex components Annex E (Normative) Cells and batteries used in flameproof enclosures Annex F (Informative) Mechanical properties for screws and nuts Annex G (Normative) Additional requirements for flameproof enclosures with an internal source of release (containment system) Annex H (Normative) Requirements for machines with flameproof “d” enclosures fed from converters Annex I (Normative) Supplementary requirements for Group I electrical equipment Annex J (Informative) Examples of supplemental mechanical means of securing the cemented joint Bibliography
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Keywords:
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