ISO INTERNATIONAL STANDARD 7176-21 Second edition 2009-04-01 Wheelchairs - Part 21: Requirements and test methods for electromagnetic compatibility of electrically powered wheelchairs and scooters, and battery chargers Fauteuils roulants- Partie 21: Exigences et methodes d'essai pour la compatibilite des fauteuils roulants électriques et scooters motorisés Reference number ISO 7176-21:2009(E) @ISO 2009 ISO 7176-21:2009(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 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 the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT ISO2009 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-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ ISO 2009 - All rights reserved ISO7176-21:2009(E) Contents Page Foreword. Introduction vi 1 Scope. 2 Normative references. 3 Terms and definitions.. 4 Classification of electricallypowered wheelchairs.. 5 Requirements.... 5.1 General..... 5.2 Wheelchair drives. 5.3 Wheelchairs with an on-board battery charger ...... 5.4 Off-board and carry-on battery chargers .... 6 Testapparatus 9 7 Preparation... 10 7.1 Wheelchairs - driving.. 10 7.2 Wheelchairs - non-driving... 11 7.3 Wheelchairs with on-board battery chargers 7.4 Off-board and carry-on battery chargers .... 11 8 Sequence of tests. 11 9 Test methods foremissions.. 11 9.1 Mains terminal disturbances... 11 9.2 Radiated emissions .... 12 9.3 Harmonic current emissions .. .12 9.4 Voltagefluctuations andflicker 12 10 Test methods for immunity.. 13 10.1 Electrostatic discharge immunity.. 13 10.2 Radiated r.f.field immunity...... 14 10.3 Fast transient/burst immunity .17 10.4 Surge immunity.... 17 10.5 Conducted disturbance immunity..... 18 10.6 Power frequency magnetic field immunity... 10.7 Voltage dips and short interruptions immunity... .18 11 Wheel speedchangecalculations. 19 12 Test report ..20 13 Disclosure .20 14 User manual ..20 @ ISo 2009 - All rights reserved ii ISO 7176-21:2009(E) Foreword ISso (the International Organization for Standardization) is a worldwide federation of national standards bodies International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/lECDirectives,Part2 The main task of technical committees is to prepare International Standards. Draft International Standards adoptedbythetechnical committeesarecirculatedtothememberbodiesforvoting.Publicationasan International Standard requires approval by at least 75% of the member bodies casting a vote. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 7176-21 was prepared by Technical Committee ISO/TC 173, Assistive products for persons with disability, Subcommittee SC 1, Wheelchairs. This second edition cancels and replaces the first edition (isO 7176-21:2003), which has been technically revised. Iso 7176 consists of the following parts, under the general title Wheelchairs: Part 1: Determination of static stability Part 2:Determination ofdynamic stability of electric wheelchairs Part3:Determinationofeffectivenessofbrakes Part 4: Energy consumption of electric wheelchairs and scooters for determination of theoretical distance range Part5:Determinationofdimensions,massandmanoeuvringspace Part6:Determination ofmaximum speed,acceleration and deceleration of electricwheelchairs