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GB 1094.1-2013: [GB/T 1094.1-2013, Including 2017XG1] Power transformers -- Part 1: General 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 1094.1: Historical versions
Similar standardsGB 1094.1-2013: [GB/T 1094.1-2013, Including 2017XG1] Power transformers -- Part 1: General---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/GB1094.1-2013GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.180 K 41 Replacing GB 1094.1-1996 Power transformers - Part 1.General (IEC 60076-1.2011, MOD) Transferred to a recommended standard according to the Standardization Administration’s announcement No. 7, 2017 [Including 2017XG1] Issued on. DECEMBER 17, 2013 Implemented on. DECEMBER 14, 2014 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 6 2 Normative references... 7 3 Terms and definitions... 8 4 Service conditions... 26 5 Rating and general requirements... 29 6 Requirements for transformers having a tapped winding... 36 7 Connection and connection symbol... 44 8 Rating plates... 50 9 Safety, environmental and other requirements... 53 10 Tolerances... 55 11 Tests... 57 12 Electromagnetic compatibility (EMC)... 69 13 High frequency switching transients... 69 Annex A (Informative) Technical differences between this Part and IEC 60076-1.2011 and their causes... 70 Annex B (Informative) Vacuum deflection test for liquid immersed transformers and pressure deflection test for liquid-immersed type transformers in IEC 60076-1.201173 Annex C (Informative) Examples of three-phase transformer connections... 76 Annex D (Informative) Check list of information to be provided with enquiry and order ... 79 Annex E (Informative) Examples of specifications for transformers with tappings.. 85 Annex F (Informative) Specification of short-circuit impedance by boundaries... 90 Annex G (Normative) Temperature correction of load loss... 91 Annex H (Informative) Facilities for future fitting of condition monitoring systems to transformers... 93 Annex I (Informative) Environmental and safety considerations... 95 Bibliography... 97 No. 1 Amendment [2017XG1]... 100ForewordClause 2, Clause 3, 11.2 ~ 11.12, Clause 12, Clause 13, Annex A ~ Annex F, Annex H, and Annex I of this Part are recommended, and the rest are mandatory. GB 1094 Power transformers currently includes the following parts. -- Part 1.General; -- Part 2.Temperature rise for liquid-immersed transformers; -- Part 3.Insulation levels, dielectric tests and external clearances in air; -- Part 4.Guide to the lightning impulse and switching impulse testing - Power transformers and reactors; -- Part 5.Ability to withstand short circuit; -- Part 6.Reactors; -- Part 7.Loading guide for oil-immersed power transformers; -- Part 10.Determination of sound levels; -- Part 10.1.Determination of sound levels - Application guide; -- Part 11.Dry-type transformers; -- Part 12.Loading guide for dry-type power transformers; -- Part 14.Liquid-immersed power transformer using high-temperature insulation materials; -- Part 16.Transformers for wind turbine applications. This Part is Part 1 of GB 1094. This Part is drafted in accordance with the rules given in GB/T 1.1-2009. This Part replaces GB 1094.1-1996, Power transformers - Part 1.General. Compared with GB 1094.1-1996, the main technical changes are as follows. -- Add the definition of harmonic content; -- Add a subclause on transport; -- Add functional method of specification; -- Add connection symbols for single phase transformers; -- Add safety and environmental requirements; -- Add requirements for liquid preservation systems; -- Add a clause on DC currents in neutral circuits; -- Adjust the test items; -- Add contents such as leak testing with pressure for liquid-immersed type transformers (tightness test), vacuum deflection test for liquid immersed transformers, pressure deflection test for liquid-immersed type transformers, and vacuum tightness test on site for liquid-immersed type transformers; -- Add informative annexes on facilities for condition monitoring to transformers and environmental and safety considerations. This Part uses the re-drafting method to modify IEC 60076-1.2011 Power transformers - Part 1.General. There are technical differences between this Part and IEC 60076-1.2011.The terms which are involved in these differences have been marked by vertical single lines (|) on the outer page margins; Annex A gives a list of corresponding technical differences and their causes. This Part also makes the following editorial changes. -- Change “Ei” and “Ii” in the key of 3.13.3 in IEC 60076-2011 to “E2i” and “I2i” respectively; -- Combine Figure 1a), Figure 1b) and Figure 1c) in IEC 60076-1.2011 into one figure; -- Remove the content of “Note” of 7.1.2 in IEC 60076-1.2011; -- Make the example under 7.2.4 in IEC 60076-1.2011 the content of 7.2.5; -- Adjust the layout of Table 1 in IEC 60076-1.2011; -- Modify the tap-position in Table B.2 and Table B.3 in IEC 60076-1.2011; -- Add the informative Annex A, where the technical differences between this Part and IEC 60076-1.2011 and the causes are listed; -- Add the informative Annex B, where the contents – vacuum deflection test for liquid immersed transformers and pressure deflection test for liquid-immersed type transformers – not adopted from IEC 60076-1.2011, are listed; -- Modify Annex A, Annex B, Annex C, Annex D, Annex E, Annex F and Annex G in IEC 60076-1.2011 to Annex D, Annex E, Annex F, Annex C, Annex G, Annex H and Annex I. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This Part was proposed by China Electrical Equipment Industry Association. This Part shall be under the jurisdiction of National Technical Committee on Transformer of Standardization Administration of China (SAC/TC 44). Drafting organizations of this Part. Shenyang Transformer Institute Co., Ltd., State Grid Electric Power Research Institute, Baoding Tianwei Baobian Electric Co., Ltd., Sunte Electric Equipment Co., Ltd., TBEA Shenyang Transformer Group Co., Ltd., Xi’an Xidian Transformer Co. Ltd., Jilin Electric Power Research Institute Co., Ltd., TBEA Hengyang Transformer Co., Ltd., Pearl Electric Co., Ltd., Wujiang Transformer Co., Ltd., Guangdong Julong Electric Power Equipment Co., Ltd., East China Grid Corporation, China Electric Equipment (Jiangsu) Co., Ltd., CHINT Electric Share Holding CO., LTD., Guangdong Junfa Electric Co., Ltd., Wolong Electric Yinchuan Transformer Co., Ltd. Main drafters of this Part. Zhang Xianzhong, Zhang Zhongguo, Wu Zhirong, Hu Zhenzhong, Liu Yan, An Zhen, Qi Yingshi, Mi Chuanlong, Zhang Dong, Ao Ming, Sun Shubo, Cai Dingguo, Lin Canhua, Wang Wenguang, Jiang Yimin, Xu Zihong, Li Jinbiao, Fan Jianping, Lu Wei. The previous versions of the standards which are replaced by this Part are. -- GB 1094.1-1985, GB 1094.1-1996. Power transformers - Part 1.General1 ScopeThis part of GB 1094 applies to three-phase and single-phase power transformers (including auto-transformers) with the exception of certain categories of small and special transformers such as.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 1094.2, Power transformers - Part 2.Temperature rise for liquid-immersed transformers (GB 1094.2-2013, IEC 60076-2.2011, MOD)3 Terms and definitionsTerms and definitions determined by GB/T 2900.15, and the following, are applicable to this document. For ease of use, some of the terms and definitions in GB/T 2900.15 are repeated below, and certain terms and definitions are modified.4 Service conditionsThis Part gives detailed requirements for transformers for use under the following conditions. For transformers intended to be installed indoors, some of these environmental conditions may not be applicable.5 Rating and general requirementsA two-winding transformer has only one value of rated power, identical for both windings. The user shall specify the cooling medium (air or water). If the user has particular requirements for the cooling method(s) or cooling equipment, this shall be stated in the enquiry.6 Requirements for transformers having a tapped windingThis type of specification is intended to allow the purchaser to specify operational requirements and not the category of voltage variation or which winding is to be tapped. This method of specification is not applicable to separate-winding transformers up to and including 2 500 kVA with a tapping range not exceeding ±5%.7 Connection and connection symbolThe existence of a stabilizing or a test winding (a delta or star-connected winding which is not terminated for external three-phase loading) is indicated, after the symbols of loadable windings, with the symbol “+d” or “+y” according to its connection as in the examples below.8 Rating platesThe information listed below shall be included on the rating plate when it is applicable to a particular transformer.9 Safety, environmental and other requirementsThe manufacturer shall consider the safety of operators and maintenance staff in the design of the transformer in particular the following aspects. The centre of gravity of the transformer in the transport configuration shall be permanently marked on at least two adjacent sides of the transformer for transformers with a transport mass in excess of 5 tons. ......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 1094.1-2013 be delivered?Answer: The full copy PDF of English version of GB 1094.1-2013 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 1094.1-2013_English with my colleagues?Answer: Yes. 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