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BS 6878(1988) : 1988
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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SPECIFICATION FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR FOR INDUSTRIAL USE - CAST ALUMINIUM ALLOY ENCLOSURES FOR GAS-FILLED HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR
Hardcopy , PDF
31-12-2016
English
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
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