GB/T 7674-2020Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above (English PDF)
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
November 19, 2020
Implementation date
June 1, 2021
Scope
GB/T 7674-2020 (Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above) is available as an English-translated PDF.
GB/T 7674-2020 is the Chinese standard "Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above".
Its scope clause reads: This standard specifies the terms and definitions, normal and special use conditions, ratings, design and structure of gas-insulated metal-enclosed switchgear: Relevant requirements for configuration, type test, factory test and selection guidelines: This standard applies to gas-insulated metal enclosures for indoor and outdoor installations with a rated voltage of 72:5kV and above and a rated frequency of 50Hz: Switchgear (hereinafter referred to as "GIS" or "switchgear"), whose insulation is obtained at least partially through insulating gas rather than at atmospheric pressure Down the air: The gas-insulated metal-enclosed switchgear covered by this standard consists of independent components that can be directly connected together, and these components can only Run in this way: According to needs, this standard completes and supplements the relevant standards applicable to the individual components of the GIS:.
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Document preview — GB/T 7674-2020
National Standard of the People's Republic of China
- ICS
- 29.130.10
- Classification
- K 43
- Replacing
- GB/T 7674-2008
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Normal and special conditions of use
- 5 Rating
- 6 Design and structure
- 7 Type test
- 8 Factory test
- 9 Guidelines for Selection of Switchgear and Control Equipment
- 10 Information provided with inquiry sheet, bidding document and order
1 Scope
This standard specifies the terms and definitions, normal and special use conditions, ratings, design and structure of gas-insulated metal-enclosed switchgear:
Relevant requirements for configuration, type test, factory test and selection guidelines:
This standard applies to gas-insulated metal enclosures for indoor and outdoor installations with a rated voltage of 72:5kV and above and a rated frequency of 50Hz:
Switchgear (hereinafter referred to as "GIS" or "switchgear"), whose insulation is obtained at least partially through insulating gas rather than at atmospheric pressure
Down the air:
The gas-insulated metal-enclosed switchgear covered by this standard consists of independent components that can be directly connected together, and these components can only
Run in this way:
According to needs, this standard completes and supplements the relevant standards applicable to the individual components of the GIS:
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 1985-2014 high voltage AC isolating switch and earthing switch (IEC 62271-102:2001 A1:2011, MOD)
GB/T 2423:17-2008 Environmental testing of electric and electronic products Part 2: Test method Test Ka: Salt spray (IEC 60068-
2-11:1981, IDT)
GB/T 3785:1 Electroacoustic Sound Level Meter Part 1: Specifications (GB/T 3785:1-2010, IEC 61672-1:2002, IDT)
GB/T 3785:2 Electroacoustic Sound Level Meter Part 2: Type Evaluation Test (GB/T 3785:2-2010, IEC 61672-2:
2003, IDT)
GB/T 4109-2008 Insulating pipe sleeves with AC voltage higher than 1000V (IEC 60137:2008, MOD)
GB/T 7354 High Voltage Test Technology Partial Discharge Measurement (GB/T 7354-2018, IEC 60270:2000, MOD)
GB/T 8905 Gas management and detection guidelines in sulphur hexafluoride electrical equipment (GB/T 8905-2012, IEC 60480:2004,
MOD)
GB/T 9326 (all parts) AC 500kV and below paper or polypropylene composite paper insulated metal sheathed oil-filled cable and accessories
[IEC 60141 (all parts)]
GB/T 9789 Metal and other inorganic coatings, sulfur dioxide corrosion test under normal condensation conditions (GB/T 9789-2008,
ISO 6988:1985, IDT)
GB/T 11017:1 Rated voltage 110kV (Um=126kV) XLPE insulated power cable and its accessories Part 1:
Test methods and requirements (GB/T 11017:1-2014, IEC 60840:2011, MOD)
GB/T 11022-2011 Common technical requirements for high-voltage switchgear and control equipment standards (IEC 62271-1:2007, MOD)
GB/T 11023 High-voltage switchgear sulfur hexafluoride gas tightness test method
GB/T 12022 Industrial sulfur hexafluoride
GB/T 13540 Seismic requirements for high-voltage switchgear and control equipment (GB/T 13540-2009, IEC 62271-2::2003,
MOD)
GB/T 16927:1 High Voltage Test Technology Part 1: General Definition and Test Requirements (GB/T 16927:1-2011,
GB/T 3906 | GB/T 11022 | GB/T 30092 | GB/T 1984 | GB/T 1985 | […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 123 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 1985-2014High-voltage alternating current disconnectors and earthing switches
- GB/T 3785Electroacoustics - Sound level meters - Part 1: Specifications
- GB/T 4109-2008Insulated bushings for alternating voltages above 1 000 V
- GB/T 7354High-voltage test techniques -- Partial discharge measurements
- GB/T 7354-2018High-voltage test techniques -- Partial discharge measurements
- GB/T 8905The guide for management and measuring SF6 gas in electrical equipment
IEC 62271 · GB/T 2423 · IEC 60068 · IEC 61672 · IEC 60137 · IEC 60270 · IEC 60480 · GB/T 9326 · IEC 60141 · ISO 6988 · GB/T 11017 · IEC 60840 · GB/T 16927
Cited by
- GB/T 42558.5-2026Seismic techniques for the electrical equipment of converter stations on plateaus - Part 5: Directives for equipment maintenance
- GB/T 1984-2024High-voltage alternating-current circuit-breakers
- GB/T 28547-2023Selection and application recommendations of metal oxide surge arresters for a. c. systems
- GB/T 41996-2022Guide of operation management model for the digital workshop of switchgear
- GB/T 42009-2022High voltage alternating-current circuit-breakers for filter banks
- GB/T 39891-2021Electrical endurance testing for circuit-breakers above a rated voltage of 52 kV
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Related Standards
GB/T 11017.1-2024 — Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 66 kV(Um=72.5 kV)and 110 kV(Um=126 kV) - Part 1: Test methods and requirements
GB/T 11017.2-2024 — Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 66 kV(Um=72.5 kV) and 110 kV (Um=126 kV) - Part 2: Power cables
GB/T 11017.3-2024 — Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 66 kV (Um=72.5 kV) and 110 kV (Um =126 kV) - Part 3: Accessories
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