|
US$369.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 23755-2020: (Three-phase combined power transformer)
Status: Valid GB/T 23755: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23755-2020 | English | 369 |
Add to Cart
|
4 days [Need to translate]
|
(Three-phase combined power transformer)
| Valid |
GB/T 23755-2020
|
| GB/T 23755-2009 | English | 799 |
Add to Cart
|
4 days [Need to translate]
|
Three-phase site-combined power transformers
| Obsolete |
GB/T 23755-2009
|
PDF similar to GB/T 23755-2020
Basic data | Standard ID | GB/T 23755-2020 (GB/T23755-2020) | | Description (Translated English) | (Three-phase combined power transformer) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K41 | | Word Count Estimation | 20,245 | | Date of Issue | 2020-11-19 | | Date of Implementation | 2021-06-01 | | Older Standard (superseded by this standard) | GB/T 23755-2009 | | Regulation (derived from) | National Standard Announcement No. 26 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 23755-2020: (Three-phase combined power transformer)---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.
(Three-phase combined power transformer)
ICS 29.180
K41
National Standards of People's Republic of China
Replace GB/T 23755-2009
Three-phase combined power transformer
2020-11-19 released
2021-06-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Conditions of use 2
5 Product model 2
6 Basic parameters 3
7 Structural requirements 11
8 Technical requirements 12
9 Nameplate 12
10 Allowable deviation 12
11 Inspection rules and methods 12
12 Marking, lifting, packaging, transportation, installation and storage 12
Reference 16
Figure 1 Double-winding three-phase combined power transformer with connection group number YNd11 13
Figure 2 The three-winding three-phase combined power transformer with the connection group number YNyn0d11 13
Figure 3 The connection group number is YNyn0yn0 d three-winding three-phase combined power transformer with stable winding 13
Figure 4 The three-winding auto-coupling three-phase combined power transformer whose connection group number is YNa0d11 14
Figure 5 500kV connection group labelled YNd11 dual-winding three-phase combined power transformer 14
Table 1 Parameters of climate and environmental conditions at different altitudes 2
Table 2 40000kVA~180000kVA dual winding three-phase combined power transformer without excitation voltage regulation 3
Table 3 40000kVA~180000kVA three-winding non-excitation voltage regulating three-phase combined power transformer 3
Table 4 40000kVA~180000kVA dual winding three-phase combined power transformer on load voltage regulation 4
Table 5 40000kVA~180000kVA three-winding on-load voltage regulating three-phase combined power transformer 4
Table 6 40000kVA~180000kVA dual winding low voltage 35kV class non-excitation voltage regulating three-phase combined power transformer 5
Table 7 40000kVA~420000kVA dual winding three-phase combined power transformer without excitation voltage regulation 5
Table 8 40000kVA~360000kVA three-winding non-excitation voltage regulating three-phase combined power transformer 6
Table 9 40000kVA~240000kVA low voltage 66kV dual-winding non-excitation voltage regulating three-phase combined power transformer 6
Table 10 40000kVA~240000kVA three-winding non-excitation voltage regulating auto-coupling three-phase combined power transformer 7
Table 11 40000kVA~240000kVA dual winding three-phase combined power transformer 7
Table 12 40000kVA~360000kVA three-winding on-load voltage regulating three-phase combined power transformer 8
Table 13 40000kVA~240000kVA three-winding on-load voltage regulating auto-coupling three-phase combined power transformer 9
Table 14 90000kVA~720000kVA dual winding three-phase combined power transformer without excitation voltage regulation 9
Table 15 90000kVA~360000kVA three-winding non-excitation voltage regulating auto-coupling three-phase combined power transformer (series winding
Voltage regulation) 10
Table 16 90000kVA~360000kVA three-winding on-load voltage regulating auto-coupling three-phase combined power transformer (series winding end
End pressure) 10
Table 17 360000kVA~860000kVA dual winding three-phase combined power transformer without excitation voltage regulation 11
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 23755-2009 "Three-phase combined power transformer", compared with GB/T 23755-2009, the main technology
The changes are as follows.
---For 110kV and 220kV three-phase combined power transformers, the capacity of 40000kVA and 50000kVA has been increased.
Quantity specifications and performance parameters (see 6.1.1 and 6.1.2);
---Added 330kV class three-phase combined power transformer related capacity specifications and performance parameters (see 6.1.3);
---The performance parameters of 110kV, 220kV and 500kV three-phase combined power transformers have been modified, no-load loss
And load loss decreased by about 20% and 5% respectively, and the no-load current decreased by about 20% respectively (see 6.1,.2009
Version 6.1);
---Modified the parameter values of voltage and short-circuit impedance in some performance parameter tables (see Table 2~Table 13 and Table 17,.2009
Version Table 2~Table 13 and Table 17);
---The technical requirements have been revised uniformly (see Chapter 7 and Chapter 8, Chapter 7 of the.2009 edition).
This standard was proposed by China Electrical Equipment Industry Association.
This standard is under the jurisdiction of the National Transformer Standardization Technical Committee (SAC/TC44).
Drafting organizations of this standard. Shenyang Transformer Research Institute Co., Ltd., Yunnan Transformer Electric Co., Ltd., TBEA Hengyang
Transformer Co., Ltd., State Grid Hebei Electric Power Co., Ltd. Electric Power Research Institute, Shandong Transmission and Transformation Equipment Co., Ltd., TBEA Shenyang
Transformer Group Co., Ltd., Xi'an Xidian Transformer Co., Ltd., Baoding Tianwei Baobian Electric Co., Ltd., Jiangsu Huapeng Transformer
Co., Ltd., China Electric Power Research Institute Co., Ltd., TBEA Xinjiang Transformer Plant, Guangdong Power Grid Co., Ltd.
Company Electric Power Research Institute, Mingzhu Electric Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., Zhejiang Jiangshan Transformer Co., Ltd.
Co., Ltd., Guangdong Zhongpeng Electric Co., Ltd., State Grid Henan Electric Power Research Institute.
The main drafters of this standard. Zhang Zhongguo, Peng Hui, Ning Yunru, Gao Shuguo, Tan Chong, Xu Sihua, Sun Zhanku, Li Hongxiu, Zhuang Jie, Fu Chao,
Ma Xuping, Sun Yinnian, Lin Chunyao, Cai Dingguo, Lei Yuanyuan, Jiang Zhenjun, Chen Jianfei, Wang Wei.
The previous versions of the standard replaced by this standard are as follows.
---GB/T 23755-2009.
Three-phase combined power transformer
1 Scope
This standard stipulates that the rated capacity is 40000kVA and above, the nominal voltage of the system is 110kV~500kV, and the rated frequency is
50Hz three-phase combined power transformer terms and definitions, use conditions, product models, basic parameters, structural requirements, technical requirements, name
Licenses, allowable deviations, inspection rules and methods, signs, lifting, packaging, transportation, installation and storage.
This standard applies to oil-immersed three-phase combined power transformers used in substations or power plants with restricted transportation conditions or layout sites.
Depressor.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 1094.1 Power Transformer Part 1.General Rules
GB/T 1094.2 Power Transformer Part 2.Temperature Rise of Liquid-immersed Transformer
GB/T 1094.3 Power Transformer Part 3.Insulation Level, Insulation Test and External Insulation Air Gap
GB/T 1094.5 Power Transformer Part 5.Ability to withstand short circuit
GB/T 1094.7 Power Transformer Part 7.Load Guidelines for Oil-immersed Power Transformers
GB/T 1094.10 Power Transformer Part 10.Sound Level Measurement
GB/T 2900.95 Electrotechnical terminology transformer, voltage regulator and reactor
GB/T 6451 Oil-immersed power transformer technical parameters and requirements
JB/T 501 Power Transformer Test Guide
JB/T 3837 Modeling method for transformer products
JB/T 10088 6kV~1000kV power transformer sound level
3 Terms and definitions
The following terms and definitions defined in GB/T 1094.1 and GB/T 2900.95 apply to this document.
3.1
Unit
Contains a single-phase body and fuel tank with an independent magnetic circuit, and can be transported independently.
3.2
Interphase pipeline
Pipes connecting the electrical and oil circuits of the three units.
3.3
Three-phase combined power transformer
A three-phase power transformer that will share one oil conservator and be installed on the same foundation with three units connected through interphase pipelines.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 23755-2020_English be delivered?Answer: Upon your order, we will start to translate GB/T 23755-2020_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 23755-2020_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 23755-2020_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. 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. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 23755-2020?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 23755-2020 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.
|