BS EN 50064:2018
$142.49
High-voltage switchgear and controlgear. Gas-filled wrought aluminium and aluminium alloy enclosures
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 32 |
This document applies to wrought aluminium and aluminium alloy enclosures and their welding. These enclosures are pressurized with dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor and outdoor installations of high-voltage switchgear and controlgear with rated voltages above 1 kV, where the gas is used principally for its dielectric and/or arc-quenching properties with rated voltages.
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above 1 kV and up to and including 52 kV concerning gas-filled compartments with design pressure higher than 300 kPa relative pressure (gauge);
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above 52 kV concerning all gas-filled compartments. The enclosures comprise parts of electrical equipment not necessarily limited to the following examples:
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circuit-breakers;
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switch-disconnectors;
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disconnectors;
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earthing switches;
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current transformers;
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voltage transformers;
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surge arrestors;
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busbars and connections;
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etc.
The scope also covers enclosures of pressurized components such as the centre chamber of live tank switchgear, gas-insulated current transformers, etc.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions |
| 11 | 4 Quality assurance 5 Normal and special service conditions |
| 12 | 6 Materials 6.1 Selection of material |
| 13 | 6.2 Chemical analysis 7 Design 7.1 General |
| 14 | 7.2 Calculation methods 7.2.1 General 7.2.2 Evaluation of mechanical strength using “Design by Formula” |
| 15 | 7.2.3 Evaluation of mechanical strength using “Design by Analysis” 7.2.3.1 Normal loads 7.2.3.2 Exceptional loads |
| 16 | 7.2.4 Evaluation of mechanical strength using “Design by Burst test” 7.2.4.1 General 7.2.4.2 Burst test procedure 7.2.4.3 Strain measurement test procedure |
| 17 | 7.2.5 Flanges 7.2.6 Bolted connections 7.2.6.1 General |
| 18 | 7.2.6.2 Normal loads 7.2.6.3 Exceptional loads 7.3 Inspection and access openings 8 Manufacture and workmanship 8.1 Material identification 8.2 Order of completion of weld seams 8.3 Cutting of materials 8.3.1 General 8.3.2 Cold sharing |
| 19 | 8.3.3 Thermal cutting 8.3.4 Examination of cut edges 8.4 Forming of shell sections and end plates 8.5 Assembly tolerances 8.6 Welded joints 8.7 Assembly for welding 8.8 General welding requirements |
| 20 | 8.9 Preheating 8.10 Surface finish 9 Repair of welding defects |
| 21 | 10 Inspection, testing and certification 10.1 Type tests 10.1.1 General 10.1.2 Burst test procedure 10.1.3 Strain measurement test 10.2 Inspection and routine tests 10.2.1 General |
| 22 | 10.2.2 Routine pressure tests 10.3 Welding procedure specifications 10.4 Welder performance tests 10.5 Non-destructive testing 10.5.1 Amount of testing of welded joints |
| 23 | 10.5.2 Test methods for weld seams 10.5.2.1 Radiography 10.5.2.2 Ultrasonic 10.5.2.3 Penetrant method 10.5.3 Surface conditions and preparations for testing |
| 24 | 10.5.4 Marking of the enclosure welds 10.5.5 Reporting 10.5.6 Minimum acceptance levels 10.5.7 Assessment of imperfections |
| 26 | 10.6 Design specification, drawings and data sheets 10.7 Certificate 10.8 Stamping 10.9 Final inspection |
| 27 | 11 Pressure relief devices 11.1 General 11.2 Bursting discs 11.3 Self-closing pressure relief valves 11.4 Non-self-closing pressure relief devices |
| 29 | Annex A (informative)A-deviation |
