GB/T 3836.2-2021 PDF EnglishUS$1055.00 · In stock · Download in 9 seconds
GB/T 3836.2-2021: Explosive atmospheres - Part 2: Equipment protection by flameproof enclosures 'd' Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 3836.2: Historical versions
Similar standardsGB/T 3836.2-2021: Explosive atmospheres - Part 2: Equipment protection by flameproof enclosures 'd'---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/GBT3836.2-2021 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.260.20 CCS K 35 Replacing GB 3836.2-2010 Explosive Atmospheres – Part 2.Equipment Protection by Flameproof Enclosures “d” (ISO 60079-1.2014, Explosive Atmospheres – Part 1.Equipment Protection by Flameproof Enclosures “d”, MOD) Issued on: OCTOBER 11, 2021 Implemented on: MAY 01, 2022 Issued by. State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword... 4 Introduction... 12 1 Scope... 15 2 Normative References... 15 3 Terms and Definitions... 16 4 Level of Protection (Equipment Protection Level, EPL)... 19 5 Flameproof Joints... 21 6 Sealed Joints... 34 7 Operating Rods... 36 8 Supplementary Requirements for Shafts and Bearings... 37 9 Light-Transmitting Parts... 40 10 Breathing and Draining Devices which form Part of a Flameproof Enclosure ... 40 11 Fasteners and Openings... 47 12 Materials... 48 13 Entries for Flameproof Enclosures... 50 14 Verification and Tests... 55 15 Type Tests... 55 16 Routine Tests... 70 17 Switchgear for Group I... 73 18 Lampholders and Lamp Caps... 74 19 Non-Metallic Enclosures and Non-Metallic Parts of Enclosures... 75 20 Marking... 77 21 Instructions... 78ForewordThis 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 2 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 3836.2-2010 Explosive Atmospheres - Part 2.Equipment Protection by Flameproof Enclosures “d”. Compared with GB 3836.2-2010, this Document made the major technical changes besides the structural adjustments and editorial modifications. --- Delete the clause of equipment category and temperature group (see Clause 4 of 2010 Edition); --- Add the Clause of protection level (see Clause 4 of this Edition); --- Add special conditions of use that the flameproof joints are not expected to be repaired (see 5.1 of this Edition); Explosive Atmospheres – Part 2.Equipment Protection by Flameproof Enclosures “d”1 ScopeThis Document 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 Document is applicable to electrical equipment protected by flameproof enclosure "d" intended to be used in explosive gas atmospheres.2 Normative ReferencesThe 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 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 Hard Metals - 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 Lamp Holders - Part 2.Pin Lamp Holders (GB/T 19148.2-2008, IEC 60061-2.2004, MOD) ANSI/ASME B1.20.1 Pipe Threads, General Purpose (Inch)3 Terms and DefinitionsFor the purposes of this Document, 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.4 Level of Protection (Equipment Protection Level, EPL)4.1 General Electrical equipment with flameproof enclosure “d” shall be one of the following. – level of protection “da” (EPL “Ma” or “Ga”); – level of protection “db” (EPL “Mb” or “Gb”); or – level of protection “dc” (EPL “Gc”). The requirements of this standard shall apply to all levels of protection unless otherwise stated. In addition, the empty flameproof enclosure as an Ex component shall meet the requirements of Annex D; the battery used in the flameproof enclosure shall meet the requirements of Annex E; the flameproof enclosure with an internal release source shall meet the additional requirements of Annex G; The motor supply power to the inverter and with flameproof enclosure "d" shall meet the requirements of Annex H; electrical equipment of Group I shall meet the supplementary requirements of Annex I.5 Flameproof Joints5.1 General requirements All flameproof joints, whether permanently closed or designed to be opened from time to time, shall comply, in the absence of pressure, with the appropriate requirements of Clause 5. The design of joints shall be appropriate to the mechanical constraints applied to them. The dimensions given in 5.2 to 5.5 specify the essential parameters of flamepaths. In instances where any of the following apply (for example, in order to comply with the test for non-transmission of an internal ignition). – the minimum length of the flameproof joint as stated by the documentation is greater than the relevant minimum; or – the maximum gap of the flameproof joint as stated by the documentation is less than the relevant maximum; or6 Sealed Joints6.1 Cemented joints 6.1.1 General7 Operating RodsWhere an operating rod passes through the wall of a flameproof enclosure, the following requirements shall be met. – if the diameter of the operating rod exceeds the minimum width of the joint specified in Tables 2 and 3, the width of the joint shall be at least equal to this diameter but without, however, having to exceed 25 mm;9 Light-Transmitting PartsFor light-transmitting parts of other than glass, the requirements in Clause 19 of this standard apply. NOTE. Mountings of light-transmitting parts, of any material that produces internal mechanical stress in those parts, can result in failure of the light-transmitting part. 10 Breathing and Draining Devices which form Part of a Flameproof Enclosure 10.1 General Breathing and draining devices shall incorporate permeable elements which can withstand the pressure created by an internal explosion in the enclosure to which they are fitted, and which shall prevent the transmission of the explosion to the explosive atmosphere surrounding the enclosure. They shall also withstand the dynamic effects of explosions within the flameproof enclosure without permanent distortion or damage which would impair their flame- arresting properties. They are not intended to withstand continuous burning on their surfaces. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 3836.2-2021 be delivered?Answer: The full copy PDF of English version of GB/T 3836.2-2021 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 3836.2-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 3836.2-2021_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 3836.2-2021 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.Question 5: Should I purchase the latest version GB/T 3836.2-2021?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 3836.2-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.How to buy and download a true PDF of English version of GB/T 3836.2-2021?A step-by-step guide to download PDF of GB/T 3836.2-2021_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 3836.2-2021". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
