BS EN 62271-112:2013
$142.49
High-voltage switchgear and controlgear – Alternating current high-speed earthing switches for secondary arc extinction on transmission lines
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 30 |
This part of IEC 62271 applies to a.c. high-speed earthing switches designed for indoor and outdoor installation and for operation at service frequencies of 50 Hz and 60 Hz on systems having voltages of 550 kV and above.
High-speed earthing switches described in this standard are intended to extinguish the secondary arc remaining after clearing faults on transmission lines by the circuit-breakers.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 8 | 1 General 1.1 Scope 1.2 Normative references 2 Normal and special service conditions 3 Terms and definitions 3.1 General terms |
| 9 | Figures Figure 1 – Explanation of a multi-phase auto-reclosing scheme |
| 10 | 3.2 Assemblies of switchgear and controlgear 3.3 Parts of assemblies 3.4 Switching devices 3.5 Parts of switchgear and controlgear 3.6 Operation 3.7 Characteristics quantities 4 Ratings |
| 11 | Figure 2 – Timing chart of HSES and circuit-breakers |
| 12 | 5 Design and construction Tables Table 1 – Standardized values of rated induced currents and voltages |
| 13 | 6 Type tests Table 2 – Items to be listed on nameplate of a HSES |
| 16 | 7 Routine tests 8 Guide to the selection of HSES 9 Information to be given with enquiries, tenders and orders |
| 17 | 10 Rules for transport, storage, installation, operation and maintenance 11 Safety |
| 18 | Annex A (informative) Background information on the use of HSES |
| 19 | Figure A.1 – Single-line diagram of a power system Figure A.2 – Timing chart of the HSESs in relation to the transmission line circuit-breakers |
| 20 | Figure A.3 – Typical timing chart showing the time between fault initiation and a successful re-close of the transmission line circuit-breakers |
| 21 | Table A.1 – Comparison of earthing switches |
| 22 | Table A.2 – Comparison of a four-legged reactor and HSES |
| 23 | Annex B (informative) Induced current and voltage conditions for other cases |
| 24 | Figure B.1 – System condition to explain successive fault Figure B.2 – Example of waveforms of delayed current zero phenomena |
| 25 | Table B.1 – Preferred values for single-phase earth fault with delayed current zero phenomena in the presence of a successive fault |
| 26 | Figure B.3 – Typical test circuit for electromagnetic coupling test-duty of a HSES with delayed current zero crossings Figure B.4 – Typical test circuit for electrostatic coupling test-duty of HSES with delayed current zero crossings |
| 27 | Table B.2 – Preferred values for multi-phase earth faults in a double-circuit system Table B.3 – Preferred values for covering the cases of categories 0 and 1 |
