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GB/T 12944-2011: High-voltage ceramic wall bushings
Status: Valid GB/T 12944: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12944-2011 | English | 579 |
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5 days [Need to translate]
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High-voltage ceramic wall bushings
| Valid |
GB/T 12944-2011
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| GB/T 12944.1-1991 | English | 359 |
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3 days [Need to translate]
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High-voltage ceramic wall bushings--Technical specifications
| Obsolete |
GB/T 12944.1-1991
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PDF similar to GB/T 12944-2011
Basic data | Standard ID | GB/T 12944-2011 (GB/T12944-2011) | | Description (Translated English) | High-voltage ceramic wall bushings | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K48 | | Classification of International Standard | 29.080.10 | | Word Count Estimation | 25,280 | | Date of Issue | 2011-07-29 | | Date of Implementation | 2011-12-01 | | Older Standard (superseded by this standard) | GB/T 12944.2-1991 | | Quoted Standard | GB/T 197-2003; GB 311.1; GB/T 1804-2000; GB/T 2900.8-2009; GB/T 4109-2008; GB/T 5273-1985; GB/T 5585.1-2005; GB/T 5585.2-2005; GB/T 23752-2009; JB/T 4307-2004 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 12 of 2011 | | 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 | | Summary | This standard specifies the high-voltage ceramic wall bushings technical requirements, testing requirements, structure type, dimensions and characteristics. This standard applies to the nominal voltage of 6kV ~ 35kV, frequency 15Hz ~ 60Hz three-phase AC system power station and substation power distribution devices used in indoor, outdoor indoor ceramic wall bushings (hereinafter referred to as casing). Casing for horizontal installation, indoor casing can be installed upright. This standard does not apply to conditions sufficient to reduce the performance under the casing and casing end surface condensation indoors circumstances under casing. | GB/T 12944-2011: High-voltage ceramic wall bushings---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.
High-voltage ceramic wall bushings
ICS 29.080.10
K48
National Standards of People's Republic of China
Replacing GB/T 12944.2-1991
High voltage ceramic wall bushings
Issued on. 2011-07-29
2011-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 operating conditions, ordering information and identification 1
5 structure type 1
5.1 The basic structure of the sleeve type 1
5.2 sleeve type 1
6 2 Technical Requirements
6.1 general requirements 2
6.2 Dimensions and characteristics 2
6.3 size tolerance 2
6.4 Visible corona voltage 3
Level 3 6.5 creepage distance
7 Test Requirements 3
7.1 general requirements 3
7.2 Visible corona voltage test (type test) 3
Other 4 8
Appendix A (normative) of the sleeve when the ambient temperature is above or below 40 ℃ use 17
A.1 maximum ambient temperature of 40 ℃ ~ 60 ℃ 17
A.2 maximum ambient temperature is below 40 ℃ 17
Annex B (informative) wall bushing installation diagram 18
Annex C (informative) round copper rod guide wall bushing size and features 19
C.1 dimensional characteristics 19
C.2 sleeve Model Description 20
C.3 Installation 20
Annex D (informative) round copper rod guide wall bushing installation diagram 21
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 12944.2-1991 "high voltage ceramic wall bushings - Dimensions and characteristics", and GB/T 12944.2-1991 phase
Ratio, in addition to editorial changes outside the main technical changes are as follows.
--- Increased "operating conditions, ordering information and identification" section (see Chapter 4);
--- Increased "technical requirements" chapter, in addition to the technical conditions GB/T 4109-2008 regulations, the increase in the visible corona voltages and tolerances
And other requirements (see Chapter 6);
--- Added "Test Requirements" chapter, in addition to the test requirements GB/T 4109-2008 the provisions in the type test increased visibility electricity
Halo voltage test requirements, and provides a number of samples for type test (see Chapter 7);
--- Press highest voltage for equipment GB 311.1 is revised draft of the provisions of the revised standard rated voltage value (see Tables 2 and 3);
--- According to a unified concept creepage distance (USCD) dressing each grade bushing creepage distance, and adds some creepage distance rating
And rated current of the product (see Tables 2 and 3);
--- Cancel the original structure 8 (see GB/T 12944.2-1991 Figure 8);
--- Increased when the maximum ambient temperature is above or below 40 ℃ sleeve use provisions (see Appendix A).
Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents.
The standard proposed by China Electrical Equipment Industrial Association.
This standard by the National Standardization Technical Committee Insulators (SAC/TC80) centralized.
This standard was drafted. Suzhou Electric Porcelain Co., Ltd., Xi'an High Voltage Apparatus Research Institute Co., Ltd., the National Insulator arrester Quality
Supervision, Inspection Center, State Grid Electric Power Research Institute, Nanjing Electric (Group) Co., Ltd. Tangshan high-voltage porcelain, China Electric Power Division
Graduate School.
Drafters of this standard. Miss Chau, Yao Junrui, Daiyu Jun, Zhao Hui, Wei Peng, Zhang Rui, Gurui Yun, Yang Ming, TRANSACTIONS OF THE.
This standard replaces the standards previously issued as follows.
--- GB/T 12944.2-1991;
--- GB 1247-1977, GB 770-1988, GB 771-1988.
High voltage ceramic wall bushings
1 Scope
This standard specifies the high-voltage ceramic wall bushings - the technical requirements, testing requirements, structure type, size and characteristics.
This standard applies to nominal voltage 6kV ~ 35kV, frequency 15Hz ~ 60Hz three-phase AC system in the power station and substation power distribution
Within the means used indoor, outdoor - indoor wall bushings (hereinafter referred to as the casing).
Sleeve for horizontal installation, the indoor casing can be installed vertically.
This standard does not apply under conditions sufficient to reduce the performance of the sleeve and the sleeve at the casing surface condensation client situations.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 197-2003 common thread tolerance
GB 311.1 insulation with high-voltage power transmission equipment
GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without individual tolerance
GB/T 2900.8-2009 Electrical insulators term
GB/T 4109-2008 AC voltage greater than 1000V insulating sleeve
GB/T 5273-1985 transformers, high-voltage electrical terminals and casing
GB/T 5585.1-2005 electrician with copper, aluminum and its alloy bus - Part 1. Copper and copper alloy bus
GB/T 5585.2-2005 electrician with copper, aluminum and its alloy bus - Part 2. Aluminium and aluminum busbars
GB/T 23752-2009 rated voltages greater than 1000V electrical equipment with pressurized and non-pressurized hollow porcelain and glass insulators
JB/T 4307-2004 insulators fitted with rubber cement glue
3 Terms and Definitions
Terms and definitions GB/T 2900.8-2009 and GB/T 4109-2008 defined apply to this document.
4 operating conditions, ordering information and identification
Operating conditions and ordering information should be consistent with the provisions of GB/T 4109-2008 in Chapter 5 and 6.1, the logo should comply with 10.3.
The ambient temperature exceeds or falls below 40 ℃ when the cannula used in Appendix A.
5 structure type
5.1 The basic structure of the sleeve type
The basic structure of the sleeve type shown in Figure 1 to 9.
5.2 sleeve models
Model a) with conductor ceramic wall bushings are shown below.
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