BS EN 50152-3-2:2016 – TC:2020 Edition
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Tracked Changes. Railway applications. Fixed installations. Particular requirements for a.c. switchgear – Measurement, control and protection devices for specific use in a.c. traction systems. Current transformers
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 33 |
This EN 50152-3-2 is applicable to new current transformers which are ? for indoor or outdoor fixed installations in tractions systems, and ? operated with an a.c. line voltage and frequency as specified in EN 50163. NOTE 1 EN 50163 specifies the a.c. traction systems 15 kV 16,7 Hz and 25 kV 50 Hz. As rails of a.c. traction systems are connected to earth and included in the return current path all phase to earth voltages will be within the tolerances as specified in EN 50163. Nevertheless phase to phase voltages may be higher e.g. in autotransformer systems. Current transformers are mainly used with ? measurement instruments, ? protective devices. This EN 50152-3-2 shall also be applied to current transformers other than inductive types as far as reasonably possible. Requirements of this EN 50152-3-2 prevail. NOTE 2 Combined current and voltage transformers are typically not used in fixed installations.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 21 | Contents Page |
| 22 | European foreword |
| 24 | 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 3.1 Terms and definitions |
| 25 | 3.2 Abbreviations |
| 26 | 4 Service conditions 5 Rating 5.1 General 5.2 Nominal voltage (Un) 5.3 Rated voltage (UNe) 5.4 Insulation coordination 5.4.1 General 5.4.2 Rated insulation level |
| 27 | Table 1 — Nominal voltages (Un), rated voltages (UNe), rated impulse voltages (UNi) and power-frequency withstand voltage (Ud) for circuits connected to the contact line 5.5 Rated frequency 5.6 Rated accuracy classes 6 Design and construction 6.1 General 6.2 Transformer construction |
| 28 | 6.3 Requirements for the external insulation 6.4 Electromagnetic compatibility (EMC) 6.5 Nameplates 7 Tests 7.1 General 7.2 Electromagnetic compatibility tests (EMC) 7.3 Partial discharge test Table 2 — Partial discharge test voltages and permissible levels for current transformers with solid insulation 8 Rules for transport, storage, erection, operation and maintenance |
| 29 | 9 Safety 10 Influence of the product on the environment 11 Information to be given with enquiries, tenders and orders |
| 30 | Bibliography |
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BS EN 50152-3-2:2016
Railway applications. Fixed installations. Particular requirements for a.c. switchgear – Measurement, control and protection devices…
