GB 1094.1-2013 PDF English
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[GB/T 1094.1-2013, Including 2017XG1] Power transformers -- Part 1: General
| Valid |
| GB 1094.1-1996 | English | RFQ |
ASK
|
6 days
|
Power transformers. Part 1: General
| Obsolete |
| GB 1094.1-1985 | English | RFQ |
ASK
|
3 days
|
Power transformers--Part 1: General
| Obsolete |
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GB 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/GB1094.1-2013
GB
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 Contents
Foreword... 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]... 100
Foreword
Clause 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.General
1 Scope
This 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 references
The 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 definitions
Terms 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 conditions
This 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 requirements
A 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 winding
This 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 symbol
The 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 plates
The information listed below shall be included on the rating plate when it is applicable
to a particular transformer.
9 Safety, environmental and other requirements
The 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.
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