BS EN 62271-211:2014:2018 Edition
$167.15
High-voltage switchgear and controlgear – Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 34 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 13 | English CONTENTS |
| 15 | FOREWORD |
| 17 | 1 General 1.1 Scope 1.2 Normative references |
| 18 | 2 Normal and special service conditions 2.1 Normal service conditions 2.2 Special service conditions 3 Terms and definitions |
| 19 | 4 Rating 4.1 Rated voltage (Ur) 4.2 Rated insulation level |
| 20 | 4.3 Rated frequency (fr) 4.4 Rated continuous current (Ir) and temperature rise 4.5 Rated short-time withstand current (Ik) and rated thermal short-time current (Ith) 4.6 Rated peak withstand current (Ip) and rated dynamic current (Id) 4.7 Rated duration of short-circuit (tk) and rated duration (tth) 4.8 Rated filling pressure pre of gas for insulation |
| 21 | 5 Design and construction 5.1 Limits of supply |
| 22 | 5.2 Pressure withstand requirements 5.3 Gas and vacuum tightness |
| 23 | 5.4 Mechanical forces applied on the connection interface 5.5 Mechanical forces applied on the bushing flange |
| 24 | 5.6 Horizontal and vertical displacement 5.7 Vibrations Tables Table 1 – Moment and forces applied on the bushing flange and transformer |
| 25 | 6 Type tests 6.1 General 6.2 Dielectric tests 6.2.1 Dielectric tests of bushing 6.2.2 Dielectric tests of transformer connection in a single phase enclosure 6.2.3 Dielectric tests of transformer connection in a three phase enclosure 6.3 Cantilever load withstand tests |
| 26 | 6.4 Gas tightness tests 7 Routine tests 7.1 General 7.2 External pressure test of the bushing 7.3 Tightness tests 8 Standard dimensions and tolerances 8.1 Single-phase direct connection between oil-filled transformer and switchgear 8.2 Three-phase direct connection between oil-filled transformer and switchgear |
| 27 | 8.3 Connection between gas-insulated transformer and switchgear 8.4 Transformer tolerances 8.5 Mounting of the transformer on its foundation 9 Information to be given with enquiries, tenders and orders 10 Transport, storage, erection, operation and maintenance |
| 28 | Figures Figure 1 – Typical direct connection between power transformer and gas-insulated metal-enclosed switchgear |
| 29 | Figure 2 – Standard dimensions for typical direct connection between power transformer and gas-insulated metal-enclosed switchgear |
| 30 | Figure 3 – Transformer tolerances for a typical direct connection shown on the example of a three-phase power transformer connected to a single-phase gas-insulated metal-enclosed switchgear |
| 31 | Figure 4 – Transformer tolerances for a typical direct connection shown on the example of a three-phase power transformer connected to a three-phase gas-insulated metal-enclosed switchgear up to 170 kV |
| 32 | Bibliography |
