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MT/T 249-2019: YBSD series flameproof mining type double speed three-phases asynchronous motor Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid MT/T 249: Historical versions
MT/T 249-2019: YBSD series flameproof mining type double speed three-phases asynchronous motor---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/MTT249-2019Sales@ChineseStandard net MT COAL INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Replacing MT/T 249-1997 YBSD series flameproof mining type double speed three- phases asynchronous motor Issued on. DECEMBER 29, 2018 Implemented on. JULY 01, 2019 Issued by. State Administration of Coal Mine Safety Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Types and basic parameters... 6 4 Technical requirements... 7 5 Test methods... 14 6 Inspection rules... 16 7 Marking, packaging, transportation, storage... 18 Appendix A (Informative) Installation dimension and tolerance of YBSD series flameproof mining type double speed three-phases asynchronous motor... 21ForewordThis standard was prepared in accordance with GB/T 1.1-2009 "Directives for standardization - Part 1.Structure and drafting of standards". This standard is a revision of MT/T 249-1997 "Flameproof mining type double speed three-phase induction motors". It replaces MT/T 249-1997, from the date of implementation. Compared with MT/T 249-1997, the main changes in the technical content of this standard are as follows. - CHANGE the standard name into "YBSD series flameproof mining type double speed three-phases asynchronous motor"; SPECIFY the scope of application of the standard, as applicable to the scraper conveyor, belt conveyor, scraper loader for the underground working face of coal mine AND other similar machinery driving motors; - EXPAND the power rating range of the electric motors to 1000/500 kW. ADD the power classes of 132/50 kW, 160/45 kW, 160/100 kW, 525/263 kW, 600/300 kW, 700/350 kW, 855/430 kW, 1000/500 kW (see 3.2.5; 3.1.8 of the 1997 edition); - IMPROVE the degree of protection of the overall structure of the motor, from IP44 to IP54 (see 3.1.2; 3.1.1 of 1997 edition); - The temperature-rise limit of the stator winding of the motor is no longer required to be degraded, according to the heat resistance level, BUT is changed to the requirements of Chapter 8 of GB 755-2008 (see 4.7; 4.8 of the 1997 edition); - CANCEL the number of no-load reversible starting tests of the motor (4.9 of the 1997 edition); - CHANGE the requirements for the installation dimension and fit tolerance of the motor to an informative appendix (see Appendix A; 3.1.9 ~ 3.1.15 of the 1997 edition). This standard was proposed by China Coal Industry Association. This standard shall be under the jurisdiction of the Technical Committee for Standardization of Coal Mine Special Equipment in the Coal Industry. Drafting organizations of this standard. Fushun Coal Mine Motor Manufacturing Co., Ltd., China Coal Science and Industry Group Shanghai Co., Ltd., Tiandi Technology Co., Ltd. Shanghai Branch, Ningxia Northwest Junma Motor Manufacturing Co., Ltd., Henan Anyang Hua'an Coal Mine Motor Co., Ltd., Fenyi Hongda Coal Mine Motor Manufacturing Co., Ltd. The main drafters of this standard. He Huiming, Xi Dawei, Zhang Jian, Fan Zuozhi, Dong Feng, Wang Xuefang, Sun Dongyan, Liu Gang, Xiao Hong. This standard replaces the standard previously issued as follows. - MT/T 249-1997. YBSD series flameproof mining type double speed three- phases asynchronous motor1 ScopeThis standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage of YBSD series flameproof mining type double speed three-phases asynchronous motor (hereinafter referred to as motors). This standard applies to the driving motors of scraper conveyors, belt conveyors, scraper loader, other similar machinery in coal mine underground working face.2 Normative referencesThe following documents are essential to the application of 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 standard. GB/T 191 Packaging - Pictorial marking for handling of goods GB 755 Rotating electrical machines - Rating and performance GB/T 1032-2012 Test procedures for three-phase induction motors GB/T 1993 Cooling methods for rotating electrical machines GB/T 2423.4 Environmental testing for electric and electronic products - Part 2.Test method - Test Db. Damp heat, cyclic (12h + 12h cycle) GB 3836.1-2010 Explosive atmospheres - Part 1.Equipment - General requirements GB 3836.2-2010 Explosive atmospheres - Part 2.Equipment protection by flameproof enclosures “d” GB 3836.3-2010 Explosive atmospheres - Part 3.Equipment protection by increased safety e GB/T 4772.1 Dimensions and output series for rotating electrical machines - Part 1. Frame numbers 56 to 400 and flange numbers 55 to 1 080 GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machined (IP code) - Classification GB 10068 Mechanical vibration of certain machines with shaft heights 56 mm and higher-measurement evaluation and limits of vibration severity GB/T 10069.1 Measurement of airborne noise emitted by rotating electrical machines and the noise limits - Part 1.Method for the measurement of airborne noise emitted by rotating electrical machines3 Types and basic parameters3.1 Type 3.1.1 The motor shall be made of explosion-proof type for mining, according to the provisions of GB 3836.1 and GB 3836.2.The explosion-proof mark is Ex d I Mb [Translator. should be “Exd I Mb”]. 3.1.2 The degree of protection of the overall structure of the motor shall comply with IP54, which is specified in GB/T 4942.1-2006. 3.1.4 The installation dimension and tolerance of the motor shall be designed and manufactured, according to the order agreement between the user and the manufacturer. The deviation shall comply with the provisions of GB/T 4772.1 (refer to Appendix A). 3.2 Basic parameters MT/T 249-2019 Sales@ChineseStandard net MT COAL INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Replacing MT/T 249-1997 YBSD series flameproof mining type double speed three- phases asynchronous motor Issued on. DECEMBER 29, 2018 Implemented on. JULY 01, 2019 Issued by. State Administration of Coal Mine SafetyTable of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Types and basic parameters... 6 4 Technical requirements... 7 5 Test methods... 14 6 Inspection rules... 16 7 Marking, packaging, transportation, storage... 18 Appendix A (Informative) Installation dimension and tolerance of YBSD series flameproof mining type double speed three-phases asynchronous motor... 21ForewordThis standard was prepared in accordance with GB/T 1.1-2009 "Directives for standardization - Part 1.Structure and drafting of standards". This standard is a revision of MT/T 249-1997 "Flameproof mining type double speed three-phase induction motors". It replaces MT/T 249-1997, from the date of implementation. Compared with MT/T 249-1997, the main changes in the technical content of this standard are as follows. - CHANGE the standard name into "YBSD series flameproof mining type double speed three-phases asynchronous motor"; SPECIFY the scope of application of the standard, as applicable to the scraper conveyor, belt conveyor, scraper loader for the underground working face of coal mine AND other similar machinery driving motors; - EXPAND the power rating range of the electric motors to 1000/500 kW. ADD the power classes of 132/50 kW, 160/45 kW, 160/100 kW, 525/263 kW, 600/300 kW, 700/350 kW, 855/430 kW, 1000/500 kW (see 3.2.5; 3.1.8 of the 1997 edition); - IMPROVE the degree of protection of the overall structure of the motor, from IP44 to IP54 (see 3.1.2; 3.1.1 of 1997 edition); - The temperature-rise limit of the stator winding of the motor is no longer required to be degraded, according to the heat resistance level, BUT is changed to the requirements of Chapter 8 of GB 755-2008 (see 4.7; 4.8 of the 1997 edition); - CANCEL the number of no-load reversible starting tests of the motor (4.9 of the 1997 edition); - CHANGE the requirements for the installation dimension and fit tolerance of the motor to an informative appendix (see Appendix A; 3.1.9 ~ 3.1.15 of the 1997 edition). This standard was proposed by China Coal Industry Association. This standard shall be under the jurisdiction of the Technical Committee for Standardization of Coal Mine Special Equipment in the Coal Industry. Drafting organizations of this standard. Fushun Coal Mine Motor Manufacturing Co., Ltd., China Coal Science and Industry Group Shanghai Co., Ltd., Tiandi Technology Co., Ltd. Shanghai Branch, Ningxia Northwest Junma Motor Manufacturing Co., Ltd., Henan Anyang Hua'an Coal Mine Motor Co., Ltd., Fenyi Hongda Coal Mine Motor Manufacturing Co., Ltd. The main drafters of this standard. He Huiming, Xi Dawei, Zhang Jian, Fan Zuozhi, Dong Feng, Wang Xuefang, Sun Dongyan, Liu Gang, Xiao Hong. This standard replaces the standard previously issued as follows. - MT/T 249-1997. YBSD series flameproof mining type double speed three- phases asynchronous motor1 ScopeThis standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage of YBSD series flameproof mining type double speed three-phases asynchronous motor (hereinafter referred to as motors). This standard applies to the driving motors of scraper conveyors, belt conveyors, scraper loader, other similar machinery in coal mine underground working face.2 Normative referencesThe following documents are essential to the application of 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 standard. GB/T 191 Packaging - Pictorial marking for handling of goods GB 755 Rotating electrical machines - Rating and performance GB/T 1032-2012 Test procedures for three-phase induction motors GB/T 1993 Cooling methods for rotating electrical machines GB/T 2423.4 Environmental testing for electric and electronic products - Part 2.Test method - Test Db. Damp heat, cyclic (12h + 12h cycle) GB 3836.1-2010 Explosive atmospheres - Part 1.Equipment - General requirements GB 3836.2-2010 Explosive atmospheres - Part 2.Equipment protection by flameproof enclosures “d” GB 3836.3-2010 Explosive atmospheres - Part 3.Equipment protection by increased safety e GB/T 4772.1 Dimensions and output series for rotating electrical machines - Part 1. Frame numbers 56 to 400 and flange numbers 55 to 1 080 GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machined (IP code) - Classification GB 10068 Mechanical vibration of certain machines with shaft heights 56 mm and higher-measurement evaluation and limits of vibration severity GB/T 10069.1 Measurement of airborne noise emitted by rotating electrical machines and the noise limits - Part 1.Method for the measurement of airborne noise emitted by rotating electrical machines3 Types and basic parameters3.1 Type 3.1.1 The motor shall be made of explosion-proof type for mining, according to the provisions of GB 3836.1 and GB 3836.2.The explosion-proof mark is Ex d I Mb [Translator. should be “Exd I Mb”]. 3.1.2 The degree of protection of the overall structure of the motor shall comply with IP54, which is specified in GB/T 4942.1-2006. 3.1.4 The installation dimension and tolerance of the motor shall be designed and manufactured, according to the order agreement between the user and the manufacturer. The deviation shall comply with the provisions of GB/T 4772.1 (refer to Appendix A). 3.2 Basic parameters ......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 MT/T 249-2019 be delivered?Answer: The full copy PDF of English version of MT/T 249-2019 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 MT/T 249-2019_English with my colleagues?Answer: Yes. The purchased PDF of MT/T 249-2019_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. 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