GB 7674-2008
Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above (English Version)

Standard No.

GB 7674-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2021-06

Replace By

GB/T 7674-2020

Latest

GB/T 7674-2020

Replace

GB 7674-1997

Scope

This standard specifies indoor and outdoor installations of gas-insulated metal-enclosed shapes for rated AC voltages of 72.5 kV and above and rated frequency of 50 Hz, the insulation of which is obtained at least in part by insulating gas rather than air at atmospheric pressure. For the purposes of this standard, the terms "GIS" and "switchgear" are both used to describe "gas-insulated metal-enclosed shape equipment". Gas-insulated metal-enclosed switchgear covered by this standard consists of individual elements which can be connected directly together and which can only be operated in this way. As needed, this standard completes and supplements the relevant standards applicable to the individual components that make up the GIS.

GB 7674-2008 Referenced Document

• GB 1207-2006 Inductive voltage transformers
• GB 1208-2006 Current transformers
• GB 1984-2003 High-voltage alternating-current circuit-breakers
• GB 1985-2004 High-voltage alternating-current disconnectors and earthing switches
• GB 19852-2005 Product of designations of origin or geographical indication-Lulong vermicelli
• GB/T 11017.1-2002 Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 110kV Part 1: Test methods and requirements
• GB/T 11022 Common specifications for high-voltage alternating-current switchgear and controlgear standards*， 2020-12-14 Update
• GB/T 11023-1989 Test guide of SF6 gas tightness for high-voltage switchgear
• GB/T 12022-2006 Sulphur hexafluoride for industrial use
• GB/T 13540-1992 Anti-seismic characteristic test for high-voltage switchgear
• GB/T 22381 Cable connections between gas-insulated metal-enclosed switchgear for rated voltages equal to and above 72.5kV and fluid-filled and extruded insulation power cables—Fluid-filled and dry type cable-terminations*， 2017-07-12 Update
• GB/T 22382 Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above*， 2017-07-12 Update
• GB/T 2423.17-2008 Environmental testing for electric and electronic products.Part 2:Test method.Test Ka:Salt mist
• GB/T 4109-2008 Insulated bushings for alternating voltages above 1000V
• GB/T 7354-2003 Partial discharge measurements
• GB/T 8905-1996 The guide for processing and measuring SF6 gas in power apparatus
• GB/T 9326.1 Oil-filled,paper or polypropylene paper laminate insulated,metal-sheathed cables and accessories for alternating voltages up to and including 500kV.Part 1:Test
• GB/T 9326.2 AC 500kV and below paper or polypropylene composite paper insulated metal sheathed oil-filled cables and accessories Part 2: AC 500kV and below paper insulated lead-sheathed oil-filled cables*， 2009-05-01 Update
• GB/T 9326.3 Oil-filled,paper or polypropylene paper laminate insulated,metal-sheathed cables and accessories for alternating voltages up to and including 500kV.Part 3:Sealing end
• GB/T 9326.4 Oil-filled,paper or polypropylene paper laminate insulated,metal-sheathed cables and accessories for alternating voltages up to and including 500 kV.Part 4:Joint
• GB/T 9326.5 Oil-filled,paper or polypropylene paper laminate insulated,metal-sheathed cables and accessories for alternating voltages up to and including 500 kV.Part 5:Pressure tanks
• ISO 3231 Paints and varnishes; determination of resistance to humid atmospheres containing sulfur dioxide

GB 7674-2008 history

• 2020 GB/T 7674-2020 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above
• 2008 GB 7674-2008 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above
• 1997 GB 7674-1997 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above