GB/T 3836.7-2017 English PDFUS$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 3836.7-2017: Explosive atmospheres -- Part 7: Equipment protection by powder filling 'q' Status: Valid GB/T 3836.7: Historical versions
Basic dataStandard ID: GB/T 3836.7-2017 (GB/T3836.7-2017)Description (Translated English): Explosive atmospheres -- Part 7: Equipment protection by powder filling ��q�� Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K35 Classification of International Standard: 29.260.20 Word Count Estimation: 18,154 Date of Issue: 2017-12-29 Date of Implementation: 2018-07-01 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 GB/T 3836.7-2017: Explosive atmospheres -- Part 7: Equipment protection by powder filling “q”---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.Explosive atmospheres--Part 7. Equipment protection by powder filling “q” ICS 29.260.20 K35 National Standards of People's Republic of China Replace GB 3836.7-2004 Explosive environment Part 7. Equipment protected by sand-filled "q" Part 7.Equipmentprotectionbypowderfiling "q" (IEC 60079-5.2015, Explosiveatmospheres- Part 5. Equipmentprotectionbypowderfiling "q", MOD) Released on.2017-12-29 2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration issued ContentForeword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Structural requirements 2 4.1 Box 2 4.2 Filling material 3 4.3 Distance 4 4.4 Connection 5 4.5 Capacitor 6 4.6 Battery and battery 6 4.7 Temperature limit under overload conditions 6 4.8 Temperature limit under fault conditions 6 5 Inspection and test 9 5.1 Type inspection and test 9 5.2 Routine inspections and tests 10 6 logo 12 7 User Manual 12 Reference 13ForewordThe Explosive Environment is divided into several parts. --- Part 1. General requirements for equipment; --- Part 2. Equipment protected by flameproof enclosure "d"; --- Part 3. Equipment protected by an increased safety "e"; --- Part 4. Equipment protected by intrinsically safe "i"; --- Part 5. Equipment protected by a positive pressure enclosure "p"; ---Part 6. Equipment protected by liquid immersion "o"; ---Part 7. Equipment protected by sand-filled "q"; --- Part 8. Equipment protected by the "n" type; ---Part 9. Equipment protected by the encapsulated type "m"; --- Part 11. Test methods and data for the classification of gas and vapour properties; --- Part 13. Repair, overhaul, repair and modification of equipment; --- Part 14. Location classification of explosive atmospheres; ---Part 15. Design, selection and installation of electrical installations; ---Part 16. Inspection and maintenance of electrical installations; --- Part 17. Structure and use of positive pressure rooms or buildings; --- Part 18. Intrinsically safe electrical systems; --- Part 19. Fieldbus Intrinsic Safety Concept (FISCO); --- Part 20. Equipment with an Equipment Protection Level (EPL) of Class Ga; --- Part 21. Application of equipment production quality system; --- Part 22. Protection measures for optical radiation equipment and transmission systems; --- Part 23. Class I EPLMa class equipment for use in gas and/or coal dust environments; --- Part 24. Equipment protected by special type "s"; This section is part 7 of the Explosive Environment. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB 3836.7-2004 "Electrical Equipment for Explosive Gas Environments Part 7. Sand Filling Type "q"", and GB 3836.7- Compared with.2004, the main technical changes are as follows. --- The rated voltage of the applicable equipment is modified from less than 1000V to less than or equal to 1140V (see Chapter 1,.2004 edition) Chapter 1); --- Added the definition of "box" to avoid confusion with the "shell" of GB 3836.1 (see 3.3); --- Increased the requirement to allow the use of reduced distance when there is no adjacent gap in the cabinet (see 4.3.1); --- Increased requirements for external connectors (see 4.4); --- Removed the requirements for cable entry devices (see 4.5 of the.2004 edition); --- Increased requirements for batteries and battery packs (see 4.6); --- Increased the exception conditions for equipment protected by fuses (see 4.8.2); ---Insulation fault, the sum of the maximum voltage RMS of the two circuits is modified from no more than 1000V to no more than 1140V (see 4.8.3, 4.8.1 of the.2004 edition); --- Added the requirement to use the creepage distance of GB 3836.3 when CTI is greater than 175 (see 4.8.3); --- Increased the evaluation of the joint surface when using the reduced distance of Table 1 (see 5.1.1); --- Added instructions for determining the maximum temperature relative to overload and fault (see 5.1.4); --- Increased batch testing (see 5.2.1); --- Added requirements for the instruction manual (see Chapter 7). This section uses the redrafting method to modify the use of IEC 60079-5.2015 "Explosive environment part 5. protected by sand-filled type "q" device". The technical differences between this part and IEC 60079-5.2015 and their reasons are as follows. ---About the normative reference documents, this part has made technical adjustments to apply to China's technical conditions, adjustments The situation is reflected in Chapter 2, “Regulatory References”, and the specific adjustments are as follows. ● Replace ISO 2859-1 with GB/T 2828.1, replace IEC 60079-0 with GB 3836.1, and replace with GB 3836.3 IEC 60079-7, replace IEC 60079-11 with GB 3836.4, replace IEC 60529 with GB/T 4208, use GB/T 6003.1 replaces ISO 3310-1, replaces ISO 3310-2 with GB/T 6003.2, and replaces with GB/T 19212.1 IEC 61558-1, replacing IEC 61558-2-6 with GB/T 19212.7; ● Replace IEC 60127 (all parts) with GB/T 9364 (all parts), the consistency procedure between the two parts The degree is as follows. ● GB/T 9364.1-2015 miniature fuses - Part 1. General definitions for miniature fuses and miniature fuses Seeking (IEC 60127-1.2006, MOD); GB/T 9364.2-1997 Miniature fuses - Part 2. Tubular fuses (IEC 60127-2.1989, IDT); GB/T 9364.3-1997 Miniature fuses - Part 3. Ultra-small fuses (IEC 60127-3.1988, IDT); ● GB/T 9364.4-2016 Miniature fuses - Part 4. General modular fuse-links (UMF) Surface mount type (IEC 60127-4.2012, MOD); GB/T 9364.5-2011 - Part 5. Guidelines for quality assessment of small fuses (IEC 60127- 5.1988, IDT); ● GB/T 9364.6-2001 miniature fuses - part 6. fuse holders for small tubular fuses (IEC 60127-6.1994, IDT); ● GB/T 9364.7-2016 Miniature fuses - Part 7. Small fuses for special applications (IEC 60127-7. 2013, MOD); ● GB/T 9364.10-2013 Miniature fuses - Part 10. User guide (IEC 60127-10.2001, MOD). --- Modify the rated voltage of the applicable equipment in the range from less than or equal to 1000V to less than or equal to 1140V, and 4.8.3 The voltage in the medium insulation fault is modified accordingly to meet the actual situation of China's coal mines. This section has made the following editorial changes. ---Modified standard name; --- Note 1 and Table 2 are combined with footnotes. This part was proposed by China Electrical Equipment Industry Association. This part is under the jurisdiction of the National Technical Committee for Standardization of Explosion-proof Electrical Equipment (SAC/TC9). This section drafted by. Nanyang Explosion-proof Electric Research Institute Co., Ltd., National Explosion-proof Electrical Products Quality Supervision and Inspection Center, New Dawn Section Technology Co., Ltd., Huarong Technology Co., Ltd., Nanyang Zhongtian Explosion-proof Electric Co., Ltd. The main drafters of this section. Wang Jun, Wang Qiaoli, Zheng Zhenxiao, Zhou Qing, Sun Jingfu, Li Rui, Zhao Hongyu, Liu Yuyun. The previous versions of the standards replaced by this section are. ---GB 3836.7-1987, GB 3836.7-2004. Explosive environment Part 7. Equipment protected by sand-filled "q"1 ScopeThis part of the "Explosive Environment" specifies electrical equipment and electrical equipment components protected by sand-filled "q" for use in explosive atmospheres. And the special requirements of the structure, test and marking of the Ex component. Note 1. Electrical equipment and Ex components protected by sand-filled “q” may include. electronic circuits, sensors, protective fuses, relays, intrinsically safe electrical equipment Equipment, associated electrical equipment, switches, etc. Note 2. The sand filling type "q" forms the equipment protection level (EPL) Gb or Mb. This part is based on the general requirements of GB 3836.1, and has been added and supplemented. This section applies to electrical equipment, electrical equipment components and Ex components that meet the following conditions. --- rated current is less than or equal to 16A; ---Rated voltage is less than or equal to 1140V; --- rated power is less than or equal to 1000W.2 Normative referencesThe following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2828.1. Sampling and sampling procedures - Part 1 . Batch-to-batch sampling plan searched by the acceptance quality limit (AQL) (GB/T 2828.1-2012, ISO 2859-1..1999, IDT) GB 3836.1 Explosive atmosphere - Part 1. General requirements for equipment (GB 3836.1-2010, IEC 60079-0.2007, MOD) GB 3836.3 Explosive atmosphere - Part 3. Equipment protected by an increased safety "e" (GB 3836.3-2010, IEC 60079-7. 2006, IDT) Explosive atmospheres - Part 4. Equipment protected by intrinsically safe "i" (GB 3836.4-2010, IEC 60079- 11.2006, MOD) GB/T 4208 enclosure protection grade (IP code) (GB/T 4208-2017, IEC 60529..2013, IDT) GB/T 6003.1 Test sieves - Technical requirements and testing - Part 1. Wire woven mesh test sieves (GB/T 6003.1-2012, ISO 3310-1.2000, MOD) GB/T 6003.2 Test sieves - Technical requirements and testing - Part 2. Metal perforated plate test sieves (GB/T 6003.2-2012, ISO 3310-2.1999, MOD) GB/T 9364 (all parts) Miniature fuses [IEC 60127 (all parts)] GB/T 19212.1 Safety of transformers, reactors, power supply units and combinations - Part 1 . General requirements and tests (GB/T 19212.1-2016, IEC 61558-1.2009, MOD) GB/T 19212.7 Safety of transformers, reactors, power supply units and similar products with a supply voltage of 1100 V or less Part. Special requirements and tests for safety isolating transformers and power supply units with built-in safety isolating transformers (GB/T 19212.7-2012, IEC 61558-2-6.2009, IDT) ISO 2591-1 screening test - Part 1. sifting test method using woven wire mesh and perforated metal sheets (Testsieving- Methodsusingtestsievesofwovenwireclothandperforatedmetalplate)3 Terms and definitionsThe following terms and definitions as defined in GB 3836.1 apply to this document. 3.1 Sand filling type "q" powderfiling "q" An explosion-proof type of electrical equipment that holds components that ignite explosive gases in place and is completely embedded in the filling material Medium to prevent ignition of an external explosive atmosphere. Note. This type of explosion protection does not prevent explosive gases from entering the equipment and Ex components and being ignited. However, due to the small gap in the filler material, the flame passes through The passage in the filling material is extinguished to prevent an external explosion. 3.2 Filling material filingmaterial Solid quartz or solid glass particles. 3.3 (for filling material) box container (forfilingmaterial) Directly encloses the protected electrical equipment and houses the housing of the filling material. Note. In some cases the enclosure can also be an external enclosure.4 Structural requirements4.1 cabinet 4.1.1 Sealing and sealing 4.1.1.1 Overview The electrical equipment, electrical equipment components, or enclosures of the Ex components protected by the sand-filled "q" shall be filled and sealed at the time of manufacture. should Seal and seal by the method specified in 4.1.1.2 or 4.1.1.3. 4.1.1.2 Permanently sealed enclosure during manufacture The cabinet shall be permanently sealed at the time of manufacture and shall be constructed so that the unpacking can leave a visible uncovering trace (evidence). Should be in accordance with Chapter 6 a) It is required to mark the cabinet. Note. Suitable techniques for leaving visible marks (evidence) when opening the cabinet. such as welding, brazing, bonded joints, riveting, bonding screws or lead screws. 4.1.1.3 Can open the cabinet for maintenance Designing electrical equipment, electrical equipment components, or Ex components that can be repaired, when repairing, refilling, and resealing the equipment, The sealing method used should not cause damage to the cabinet. The cabinet shall be marked in accordance with the requirements of Chapter 6 b). 4.1.2 Pressure test of the box Electrical equipment, electrical equipment components or Ex components protected by sand-filled "q" shall comply with the pressure test requirements specified in 5.1.1. 4.1.3 Cabinet protection level The electrical equipment, electrical equipment components or Ex components of the enclosure protected by the sand-filled "q" are normally operated under normal operating conditions. In case all openings in the use are closed, at least the requirements of IP54 protection according to GB/T 4208 shall be met. If the degree of protection For IP55 or higher, and the cabinet is not airtight, the cabinet should be equipped with a breathing apparatus. The cabinet using the breathing apparatus should at least comply with The IP54 protection level specified in GB/T 4208. Protective tests shall be carried out on unfilled empty tanks. At the end of the waterproof test There should be no visible water in the tank. Note 1. When conducting the protection test, in order to determine whether there is dust or water in the tank, it may be necessary to destroy the tank. Therefore, two test samples need to be prepared. Do not carry out dust and water resistance tests. Note 2. When the cabinet is also the outer casing, the test requirements of GB 3836.1 for the outer casing are applicable. For cabinets or electrical equipment parts protected by sand-filled “q”, the degree of protection can be reduced if used only in clean, dry rooms. IP43. For such equipment, the symbol "X" should be added after the explosion-proof certificate number in accordance with the requirements of GB 3836.1, and the explosion-proof qualified. The restrictions on use should be specified in the special conditions of use specified in the certificate. When the Ex component protected by the sand-filled “q” is installed in another explosion-proof enclosure that complies with GB 3836.1, the outer casing The degree of protection should be at least IP54. If the location of the Ex component is such that it is unlikely to be affected by any small amount of water that may enter the enclosure, It is not necessary to specify the degree of protection of the inner cabinet. Note 3. For Ex components installed in another enclosure complying with the requirements of GB 3836.1, the enclosure provides shock and drop protection, GB 3836.1 The shell impact test and the drop test are generally no longer applicable. For a cabinet protected by a sand-filled "q", the maximum clearance should be at least 0.1 mm smaller than the minimum size of the specified filler material. Note 4. The purpose of limiting the gap size is to prevent the filler from leaking. 4.1.4 Filling method There should be no voids in the filling material during filling (for example by shaking). Electrical equipment, electrical equipment components or equipment protected by sand-filled "q" The free space inside the Ex component should be effectively filled with filler (see also 4.3.2). 4.1.5 Cabinets without external enclosures For installation in another external enclosure, the enclosure protected by the sand-filled "q" or the enclosure of the Ex component is considered to be the enclosure of the Ex component. the same. 4.2 Filling material 4.2.1 Requirements The filler material should be quartz or solid glass particles. Filling materials shall be determined to be dry materials in accordance with the procedures of ISO 2591-1, and the particle size shall be in the sieve specifications specified in the following standards. Inside. --- According to GB/T 6003.1 or GB/T 6003.2 nominal diameter of 1mm sieve; --- According to GB/T 6003.1 screen with a nominal pore size of 500μm. 4.2.2 File The documents provided by the manufacturer in accordance with the requirements of GB 3836.1 shall include the technical requirements of the granular materials, the particle size range, and the filling method. And measures to ensure proper filling. Note. Verification of the technical requirements for particle material and the conformity of the particle size range are not part of this section. 4.2.3 Test The filler material shall withstand the dielectric strength test specified in 5.1.3. 4.3 Distance 4.3.1 Distance within the filling material Unless otherwise specified in this section, the shortest distance between the conductive parts of the equipment and the inner surface of the tank shall be in accordance with Table 1 and The provisions of 1. This provision does not apply to conductors for external connectors that pass through the wall of the cabinet. Table 1 Distance in the packing AC voltage rms or DC voltage a shortest distance Mm Reduce the distance b Mm ≤80 5 1.5 ≤100 5 2 ≤125 5 2 ≤160 5 2 ≤200 5 3 ≤250 5 3 ≤400 6.3 3 ≤500 8 3 ≤800 10 5 ≤1000 14 5 ≤1600 16 10 ≤2500 25 10 ≤3200 32 10 ≤4000 40 14 ≤5000 50 14 ≤6300 63 25 ≤8000 80 25 ≤10000 100 40 a When determining the required creepage distance and clearance value, the operating voltage can be higher than the voltage in the table multiplied by 1.1. Note when using the coefficient of 1.1 In many places of a circuit, the operating voltage is equal to the rated voltage, and only some commonly used rated voltages can use a factor of 1.1. b In order to ensure that there is sufficient path length in the filling material, the flame propagating from the inside to the outside of the container can be extinguished, and there is no adjacent room in the box only. The gap, which does not allow the flame to pass out of the container, is allowed to use the reduced distances listed in the table, see Figure 1. Description. a---the distance from the conductive wall specified in Table 1, reducing the distance; b---distance from a non-conductive wall of thickness t, b ≥ distance specified in Table 1 - t; c---distance from the gap, the minimum radius specified in Table 1, no reduction in distance; d---the creepage distance specified in Table 2. Figure 1 Distance in the packing The fault conditions specified in 4.8 should be considered when determining the operating voltage. Note. Although this section applies to devices with a rated input voltage not exceeding 1000V, Table 1 considers the high possible internality of the device or Ex component. Operating voltage of 1000V. A typical example is a fluorescent lamp transformer rated at 240V, but with an arc starting voltage of approximately.2000V. 4.3.2 Distance around free space If the components inside the electrical equipment contain a closed cavity (such as a relay) that is not filled with filler, the following requirements apply. ---If the net volume of the closed cavity of the component is less than 3cm3, then the shortest distance between the component wall and the inner surface of the case through the filler Should comply with the provisions of Table 1. Narrowing distance is not allowed; --- If the net volume of the closed cavity of the component is between 3cm3 and 30cm3, then the filler is passed between the component wall and the inner surface of the case. The shortest distance shall comply with the provisions of Table 1, but at least 15mm; --- The component should be fixed so that it is impossi......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 3836.7-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 3836.7-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 3836.7-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 3836.7-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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