Bsi bs en 50123 6 2003 + a1 2014

BRITISH STANDARD Railway applications — Fixed installations — D.C switchgear — Part 6: D.C switchgear assemblies ICS 29.120.60; 45.020 12&23 25 ≤ 40 > 40 1,0 1,5 The ignition wire shall be connected to points without solid insulation Insulation shall not be destroyed, removed or punctured when the ignition wire is connected B.4.3 Indicators B.4.3.1 General The indicators to be used are pieces of black cotton cloth so arranged that their cut edges not point towards the test unit Care should be taken in mounting the indicators to ensure that they not ignite each other This can be achieved by fitting them, for example, in a mounting frame of steel sheets (see Figure B.2) The indicator dimensions shall be about 150 mm × 150 mm Black cretonne (cotton fabric approximately 150 g/m²) shall be used for the indicators The indicators shall be evenly distributed, arranged in a checkerboard pattern, covering 40 % to 50 % of the area (Figure B.3) " BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E) ! B.4.3.2 - 36 - Fitting of the indicators Indicators shall be fitted vertically on all sides of the ASSEMBLY They shall be placed, up to a minimum height of 000 mm (± 50 mm) and a distance of 300 mm ± 15 mm from the ASSEMBLY, facing all points where gas is likely to be emitted (e.g joints, inspection windows, doors) (refer to Figure B.4) The indicators fitted vertically to the ASSEMBLY are measured:  the height from the bottom of the ASSEMBLY, disregarding any item not part of the ASSEMBLY (e.g transport facilities);  the distance from the surface of the ASSEMBLY, disregarding protruding elements not expected to influence the evacuation of hot gases (e.g handles or transport facilities) If a test specimen includes a roof indicators shall be placed as shown in Figure B.1 B.4.4 Repetition of the test A test shall be repeated when the arc extinguishes within the first half of the full intended test duration without being ignited again The same point of initiation shall be used as for the first test A further repetition is not required B.5 Assessment of the test The following criteria are used to assess the characteristics under arcing conditions Criterion 1:  Correctly secured doors, covers, etc., not open  Deformations are accepted, provided that no part comes as far as the position of the indicators on every side The ASSEMBLY does not need to comply with its IP code after the test To extend the acceptance criterion to an installation mounted closer to a wall than the indicators during test, the permanent deformation shall be less than the intended distance to the wall Criterion 2:  No fragmentation of the enclosure occurs  No ejection of fragments or of other parts of the switchgear of an individual mass of 60 g or more occurs  Objects of an individual mass of 60 g or more falling to the floor in the immediate vicinity of the switchgear are accepted (this means between the switchgear and the indicator rack) Criterion 3:  Arcing does not cause holes by burning through the external surfaces up to a height of 000 mm NOTE Holes in the enclosure which are created after the duration of test by other effects than burning through caused by the internal arc, are disregarded " - 37 - BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E) ! Criterion 4:  The indicators arranged vertically not ignite (indicators ignited as a result of paint or stickers burning are excluded from this assessment) Criterion 5:  The enclosure remains connected to its earthing point Visual inspection is generally sufficient to assess compliance In case of doubt, the continuity of the earthing connection shall be checked B.6 Test report The following information shall be given in the test report: a) rating of the tested ASSEMBLY; b) description of the tested ASSEMBLY with a drawing showing the main dimensions, details relevant to the mechanical strength, the arrangement of the pressure relief system (e.g flaps and ducts if any) and the method of fixing the ASSEMBLY to the floor and the walls; c) arrangement of the test connections and the point(s) of initiation of the arc(s); d) point and method of initiation of the internal fault; e) for the prospective and the test current:  prospective sustained short-circuit current;  peak prospective value of the short-circuit current;  test duration;  Joule integral;  arc energy; f) oscillograms showing currents and voltages; g) assessment of the test results for personal protection against each of the criteria to 5; h) photographs, before and after test:  ASSEMBLY by its own on the test stand including the external surface(s) of the compartment(s) under test;  ASSEMBLY with the arrangement of the indicators and ceiling (if any);  earthing connection;  location of arc initiation " BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E) - 38 - Dimensions in mm ! 800 (1) 300 A 300 100 Rear indicators Functional units Front indicators 2000 300 Roof A Functional Functional Functional unit unit unit if required Lateral indicators dc Simulated wall Roof Simulated floor a) Side elevation b) Front elevation Functional Functional Functional unit unit unit if required Lateral indicators Rear indicators Front indicators c) Section A-A Key (1) open pressure relief flap dc distance to ceiling Figure B.1 — Room simulation and indicator positioning, functional unit of fitted with roof " - 39 - BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E) ! Dimensions in mm NOTE Exposed edges of the indicator material may be tapped or covered Figure B.2 – Mounting frame for vertical indicators Figure B.3 – Indicators arranged in a checkerboard pattern " BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E) - 40 - ! Dimensions in mm Simulated ceiling (1) 300 300 Simulated wall 100 Rear indicators Functional units Front indicators 2000 300 800 Functional Functional Functional unit unit unit if required Lateral indicators dc Simulated floor a) Side elevation b) Front elevation Functional Functional Functional unit unit unit if required Lateral indicators Rear indicators Front indicators Simulated ceiling c) Top view Key (1) open pressure relief flap dc distance to ceiling Figure B.4 – Room simulation and indicator positioning, functional unit of any height " - 41 - ! BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E) Bibliography EN 50123-7-1:2003, Railway applications – Fixed installations – D.C switchgear – Part 7-1: Measurement, control and protection devices for specific use in d.c traction systems – Application guide EN 62271-200:2012, High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above kV and up to and including 52 kV (IEC 62271-200:2011) IEC/TR 61641:2008, Enclosed low-voltage switchgear and controlgear assemblies — Guide for testing under conditions of arcing due to internal fault " NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services BSI is incorporated by Royal Charter British Standards and other standardization products are published by BSI Standards Limited About us Revisions We bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions Our British Standards and other publications are updated by amendment or revision The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process Organizations of all sizes and across all sectors choose standards to help them achieve their goals Information on standards We can provide you with the knowledge that your organization needs to succeed Find out more about British Standards by visiting our website at bsigroup.com/standards or contacting our Customer Services team or Knowledge Centre Buying standards You can buy and download PDF versions of BSI publications, including British and adopted European and international standards, through our website at bsigroup.com/shop, where hard copies can also be purchased If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from our Customer Services team Subscriptions Our range of subscription services are designed to make using standards easier for you For further information on our subscription products go to bsigroup.com/subscriptions With British Standards Online (BSOL) you’ll have instant access to over 55,000 British and adopted European and international standards from your desktop It’s available 24/7 and is refreshed daily so you’ll always be up to date You can keep in touch with standards developments and receive substantial discounts on the purchase price of standards, both in single copy and subscription format, by becoming a BSI Subscribing Member PLUS is an updating service exclusive to BSI Subscribing Members You will automatically receive the latest hard copy of your standards when they’re revised or replaced To find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit bsigroup.com/shop With a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet Licences can cover as few or as many users as you wish With updates supplied as soon as they’re available, you can be sure your documentation is current For further information, email bsmusales@bsigroup.com BSI Group Headquarters 389 Chiswick High Road London W4 4AL UK We continually improve the quality of our products and services to benefit your business If you find an inaccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre Copyright All the data, software and documentation set out in all British Standards and other BSI publications are the property of and copyrighted by BSI, or some person or entity that owns copyright in the information used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publication and use Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI Details and advice can be obtained from the Copyright & Licensing Department Useful Contacts: Customer Services Tel: +44 845 086 9001 Email (orders): orders@bsigroup.com Email (enquiries): cservices@bsigroup.com Subscriptions Tel: +44 845 086 9001 Email: subscriptions@bsigroup.com Knowledge Centre Tel: +44 20 8996 7004 Email: knowledgecentre@bsigroup.com Copyright & Licensing Tel: +44 20 8996 7070 Email: copyright@bsigroup.com