ISO INTERNATIONAL STANDARD 7240-4 Second edition 2017-11 Fire detection and alarm systems Part 4: Power supply equipment Systemes de détection et d'alarme d'incendie - Partie 4: Equipement d'alimentation électrique Reference number IS0 7240-4:2017(E) @ IS0 2017 No repr ut license from IHS Not for Resale, 12/01/2017 01:09:18 MST IS0 7240-4:2017(E) COPYRIGHT PROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 · CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org @ IS0 2017 - All rights reserved HSM Noreproduc Not for Resale, 12/01/2017 01:09:18 MST IS0 7240-4:2017(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Symbols and abbreviated terms. 4.1 Symbols .2 4.2 Abbreviated terms .2 5 Requirements. .2 5.1 General. .2 5.2 Compliance. 5.3 Power sources. 3 5.3.1 General .3 5.3.2 Main power source. 3 5.3.3 Standby power source 3 5.4 Charger. 4 5.5 Faults .4 5.6 Mechanical .5 5.7 Power supply interface 5 5.8 .5 Software 5.8.1 General. .5 5.8.2 Program monitoring 5.8.3 Storage of programs and data 6 5.8.4 Monitoring of memory contents .6 6 Tests ..6 6.1 General .6 6.1.1 Standard atmospheric conditions for testing ..6 6.1.2 Mounting and orientation. 7 6.1.3 Electrical connection. .7 6.2 Functional tests. .7 6.2.1 The object of test. .7 6.2.2 Test schedule 6.2.3 Full functional test. .8 6.2.4 Reduced functional test 6.3 Charger and the standby power source test. .10 6.3.1 Test procedure 10 6.3.2 Requirements .10 6.4 High battery impedance test ..10 6.4.1 Object oftest ..10 6.4.2 General .10 6.4.3 Test procedure for non-integrated PSE ..10 6.4.4 Requirements for integrated PSE 11 6.4.5 Test procedure for integrated PSE ..11 6.4.6 Requirements for integrated PSE .12 6.5 Environmental tests . ..12 6.5.1 General. .12 6.5.2 Tests for one specimen .13 6.5.3 Tests for more than one specimen ..13 6.5.4 Requirements ..13 6.6 Cold (operational) .14 6.6.1 Object of test. ..14 6.6.2 Test procedure ..14 opyrntntematonalai rights reserved ii ded by IHS Markit un nitted without license from IHS Not for Resale, 12/01/2017 01:09:18 MST