ISO/TR TECHNICAL REPORT 11071-1 Second edition 2004-07-15 Comparison of worldwide lift safety standards - Part 1: Electric lifts (elevators) Comparaison des normes mondiales de sécurité des ascenseurs - Partie 1: Ascenseurs électriques Reference number ISO/TR 11071-1:2004(E) Copyright International Organization for Standardization @ISO2004 itted without license from IHS Not for Resale ISO/TR 11071-1:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below @ISO2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland yhematinalganzaionSandardizato @ISO2004-All rights reserved nitted without licensefrom IHS Not for Resale ISO/TR 11071-1:2004(E) Contents Page Foreword. V Introductiontothefirstedition(1990). vi Introduction to this edition 1 Scope. 2 Terminology 2.1 2.2 Electrical safety devices and electrical protective devices. 2.3 Safety gear and safeties .... 2.4 3 Basis for lift safety standards development (basic assumptions) 3.1 Historical background .... 3.2 General. 3.3 Assumption 1 - safe operation assured to 125 % of rated load 3.4 Assumption 2 -- failure of electrical safety devices.... 3.5 Assumption 3 - failure of mechanical devices ... 10 3.6 Assumption 4 - imprudent acts by users 12 3.7 Assumption 5 - neutralization of safety devices during servicing 12 3.8 Assumption 6 -- car speed linked to frequency of mains ...... 14 3.9 Assumption 7chorizontal forces exerted by a person .. .14 3.10 Assumption 8 - retardation..... 16 4 Spaces and clearances... 18 4.1 18 4.2 Observations and suggestions by individual experts 21 4.3 Point agreed upon.... 22 5 Door systems and interlocks .. 5.1 Historical background ... 22 5.2 Observations and suggestions by individual experts .... 5.3 Points agreed upon... .24 6 Kinetic energy ... 6.1 Historical background .... 26 6.2 Observations and suggestions by individual experts . 6.3 Points agreed upon... 32 7 Tractioncalculations 7.1 Historical background ... .34 7.2 Observations and suggestions by individual experts .... 34 7.3 8 38 8.1 Historical background.. 8.2 Observations and suggestions by individual experts .. .38 8.3 Points agreed upon... .40 9 Overspeed governors .40 9.1 Historical background .... 9.2 Observations and suggestions by individual experts .40 9.3 Points agreed upon... 42 10 Buffers. 42 10.1 Historical background . .42 CopyrghtInternational Organizasandardizaoghtsreserved ii out license from IHS Not for Resale ISO/TR 11071-1:2004(E) 10.2 10.3 Points agreed upon... ..46 11 Braking systems... 11.1 Historical background .46 11.2 Observations and suggestions by individual experts. 11.3 Points agreed upon... 12 12.1 Historical background ... ..48 12.2 Observations and suggestions by individual experts. .50 12.3 Annex A (normative) Tabulations .. Annex B (informative) References Annex C (informative) CEN/TC 10/WG 1 Document N144E Copyright International Organization for Standardization IsO 2004-All rights reserved Not for Resale ISO/TR 11071-1:2004(E) Foreword SO(theInternational