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BS 6878(1988) : 1988

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

SPECIFICATION FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR FOR INDUSTRIAL USE - CAST ALUMINIUM ALLOY ENCLOSURES FOR GAS-FILLED HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR
Available format(s)

Hardcopy , PDF

Superseded date

12-31-2016

Language(s)

English

Published date

01-01-1993

Foreword
Brief history
0 Introduction
1 Scope
2 Quality assurance
3 Definitions
4 Materials
   4.1 Selection of material
   4.2 Chemical analysis
5 Design
   5.1 General
   5.2 Corrosion allowance
   5.3 Design stresses
   5.4 Calculation methods
   5.5 Manholes and inspection openings
6 Manufacture and workmanship
   6.1 Manufacture
   6.2 Consultation between manufacturer and founder
   6.3 Foundry technique
   6.4 Geometry and dimensions
   6.5 Chemical composition and mechanical properties
   6.6 Workmanship
7 Repair of casting defects
   7.1 General
   7.2 Repair by welding
   7.3 Impregnation of castings
8 Heat treatment
   8.1 Heat treatment procedure
   8.2 Methods of heating
   8.3 Quenching
   8.4 Calibration of furnace temperature
   8.5 Heat treatment charts
9 Inspection, testing and certification
   9.1 Proof tests
   9.2 Inspection and routine tests
   9.3 Certification
10 Pressure relief devices
   10.1 General
   10.2 Bursting discs
   10.3 Self-closing pressure relief valves
   10.4 Non-self-closing pressure relief devices
Annex A Welder performance test
Annex B (informative) A - deviations
National appendix W
National appendix X

Applicable to cast aluminium alloy enclosures pressurized with dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases.

Committee
PEL/17/1
DevelopmentNote
Supersedes 84/28846 DC and 93/204688 DC. (09/2005)
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
NFC 64 450 : 87 AMD 2 93 Identical

BS EN 50068:1991 Specification for wrought steel enclosures for gas-filled high-voltage switchgear and controlgear
BS EN 50069 : 1991 SPECIFICATION FOR WELDED COMPOSITE ENCLOSURES OF CAST AND WROUGHT ALUMINIUM ALLOYS FOR GAS-FILLED HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR
BS EN 50187:1997 Gas-filled compartments for a.c. switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
EN 50069:1991/corrigendum Aug. 2007 WELDED COMPOSITE ENCLOSURES OF CAST AND WROUGHT ALUMINIUM ALLOYS FOR GAS-FILLED HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR

ISO 3134-4:1985 Light metals and their alloys — Terms and definitions — Part 4: Castings
ISO 3134-2:1985 Light metals and their alloys — Terms and definitions — Part 2: Unwrought products
BS 6104-3:1981 Mechanical properties of fasteners Specification for set screws and similar threaded fasteners not under tensile stresses
ISO 3134-1:1985 Light metals and their alloys — Terms and definitions — Part 1: Materials
BS 6104-1:1981 Mechanical properties of fasteners Specification for bolts, screws and studs
BS 6104-2:1983 Mechanical properties of fasteners Specification for nuts with specified proof load values
ISO/R 373:1964 General principles for fatigue testing of metals
ISO 3134-3:1985 Light metals and their alloys — Terms and definitions — Part 3: Wrought products
IEC 60517:1990 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above
HD 358 : 200S3 GAS-INSULATED METAL-ENCLOSED SWITCHGEAR FOR RATED VOLTAGES OF 72.5 kV AND ABOVE
ISO/IEC Guide 2:2004 Standardization and related activities General vocabulary
BS 5424-1:1977 Specification for controlgear for voltages up to and including 1000 V a.c. and 1200 V d.c. Contactors
ISO 3134-5:1981 Light metals and their alloys — Terms and definitions — Part 5: Methods of processing and treatment
BS 3518-1:1962 Methods of fatigue testing General principles

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