Bsi bs en 12736 2001 (2002)

Unknown BRITISH STANDARD BS EN 12736 2001 Electrically propelled road vehicles — Airborne acoustical noise of vehicle during charging with on board chargers — Determination of sound power level The Eu[.]

Electrically propelled

road vehicles —

Airborne acoustical

noise of vehicle during

charging with on-board

chargers —

Determination of sound

power level

The European Standard EN 12736:2001 has the status of a

British Standard

ICS 17.140.30; 43.120

12&23<,1*:,7+287%6,3(50,66,21(;&(37$63(50,77('%<&23<5,*+7/$:

BS EN 12736:2001

This British Standard, having

been prepared under the

direction of the

Electrotechnical Sector Policy

and Strategy Committee, was

published under the authority

of the Standards Policy and

Strategy Committee on

25 October 2002

© BSI 25 October 2002

ISBN 0 580 40641 5

National foreword

This British Standard is the official English language version of

EN 12736:2001

The UK participation in its preparation was entrusted to Technical Committee PEL/69, Electric vehicles, which has the responsibility to:

A list of organizations represented on this committee can be obtained on request to its secretary

Cross-references

The British Standards which implement international or European

publications referred to in this document may be found in the BSI Catalogue

under the section entitled “International Standards Correspondence Index”, or

by using the “Search” facility of the BSI Electronic Catalogue or of British

Standards Online

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

Compliance with a British Standard does not of itself confer immunity from legal obligations.

— aid enquirers to understand the text;

— present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the

UK interests informed;

— monitor related international and European developments and promulgate them in the UK

Summary of pages

This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover

The BSI copyright date displayed in this document indicates when the document was last issued

Amendments issued since publication

EUROPÄISCHE NORM December 2001

ICS 17.140.30; 43.120

English version

Electrically propelled road vehicles - Airborne acoustical noise of

vehicle during charging with on-board chargers - Determination

of sound power level

Véhicules routiers à propulsion électrique - Bruit acoustique

aérien du véhicule pendant la charge avec des chargeurs

embarqués - Détermination du niveau de puissance

acoustique

Elektrisch angetriebene Straßenfahrzeuge -Luftschallemission von Fahrzeugen während der Ladung mit bordeigenen Ladegerät - Bestimmung des

Schall-Leistungspegels

This European Standard was approved by CEN on 14 October 2001.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä IS C H E S K O M IT E E FÜ R N O R M U N G

Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2001 CEN All rights of exploitation in any form and by any means reserved

EN 12736:2002 (E)

2

Contents

page

Foreword 3

Introduction 4

1 Scope 4

2 Normative references 4

3 Terms and definitions 4

4 Preconditioning of the vehicle 5

5 Preparation of vehicle 5

6 Acoustical environment 5

6.1 Test site 5

6.2 Background noise 5

6.3 Environmental conditions 5

7 Acoustical measurement device 5

8 Operation mode 5

8.1 Position of microphones 5

8.2 Duration of measurement 6

8.3 Reading 6

9 Test report 6

9.1 Data of the test vehicle 6

9.1.1 Trade name or mark of the vehicle 6

9.1.2 Battery 6

9.1.3 Charger 6

9.2 Test site and ambient conditions 6

9.2.1 Ambient temperature 6

9.2.2 Barometric pressure 6

9.2.3 Relative humidity 6

9.3 Measuring instrument description 6

9.4 A-weighted background noise pressure level 6

9.5 Readings of the sound pressure levels with the vehicle, expressed in dB(A) 6

Annex A (informative) Different airborne noise limits existing in different European countries 7

Foreword

This document has been prepared by CEN /TC 301, "Electrically propelled road vehicles", the secretariat of which

is held by AFNOR

This document has to be implemented at national level, either by publication of an identical text or by endorsement,

by June 2002, and conflicting national standards have to be withdrawn by June 2002

Annex A is for information only

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this document: Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom

EN 12736:2002 (E)

4

Introduction

Electric road vehicles emit a very low level of noise when being driven because the noise emission of the electric motor is negligible compared with that of an Internal Combustion (I.C.) engine On the other hand, electric road vehicles emit noise when they are stationary and the battery is on charge If an electric road vehicle is equipped with an on-board charger, this can be a source of noise during charging, together with a number of other components which may also be operating and producing noise Such airborne noise should be minimised, to avoid public nuisance, and its intensity should be no higher than that permitted under existing limits or recommendations This is the reason why it is important to measure the noise emission of the whole vehicle under precisely defined conditions The airborne acoustical noise emission is expressed in terms of the sound power level of the electric road vehicle

1 Scope

This standard specifies the procedure for measurement of the airborne acoustical noise emissions of electrically propelled road vehicles from category M1, M2, N1, or N2 1 )

during charging, the vehicle being fitted with an on-board charger

2 Normative references

This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to applies (including amendments)

EN ISO 3744: 1995, Acoustics Determination of sound power levels of noise sources using sound pressure

-Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994).

ISO 362: 1998, Acoustics - Measurement of noise emitted by accelerating road vehicles - Engineering method ISO 1176:1990, Road vehicles - Masses - Vocabulary and codes.

ISO 10844:1994, Acoustics - Specification of test tracks for the purpose of measuring noise emitted by road

vehicles.

3 Terms and definitions

For the purposes of this European Standard, the following terms and definitions apply

3.1

complete vehicle kerb mass VKM

the definition of ISO-M06 in accordance with ISO 1176 applies

NOTE The complete vehicle kerb mass VKM includes, in addition to the definition of ISO 1176, the traction battery, on board charger, portable charger or part of it if provided as standard by the manufacturer of the vehicle.

1 )

Categories of vehicles M 1 , M 2 , N 1 and N 2 are defined in Directive 92/53 EEC

4 Preconditioning of the vehicle

4.1 Before the test, the battery of the vehicle shall be discharged to a level of at least 50 % of discharge, as

indicated by the state of charge meter in the vehicle If there is no state of charge meter fitted to the vehicle, the battery shall be discharged to a level of at Ieast 50 % depth of discharge by driving the vehicle over a distance and

at a speed, which are determined by the vehicle manufacturer

4.2 The vehicle tyres shall be inflated to the pressure specified by the vehicle manufacturer when the tyres are at

the ambient temperature, thus keeping the vehicle stable on the test track

5 Preparation of vehicle

5.1 The test shall be carried out with the vehicle at its VKM according to IS0 1176.

5.2 The vehicle on board charger shall be connected to the mains electricity supply.

5.3 The test shall be carried out for worst case conditions; the vehicle manufacturer shall guarantee that all

devices capable of influencing the test result are in operation Exception may be made for devices capable of operating for no more than 5 min in any period of 1 h; these may be switched off If there are devices in the vehicle which cannot operate concurrently, the device with the Iargest influence on the test result shall operate All devices shall operate at their normal operating power level

6 Acoustical environment

6.1 Test site

The test site shall be a track as defined in ISO 10844

6.2 Background noise

The background noise shall be at least 10 dB below the noise emitted by the vehicle under test

6.3 Environmental conditions

The ambient temperature shall be between 0 °C and 42 °C It is recommended not to perform the measurements if the wind speed exceeds 5 m/s at the height of the microphone

7 Acoustical measurement device

The acoustical measurement device shall conform to the specifications defined in 5.1 in ISO 362:1998

8 Operation mode

8.1 Position of microphones

The vehicle is located at the centre of the track defined in ISO 10844

The microphone is located 2 m from the vehicle, 1,2 m above the ground for the six following positions:

 at the front and in the symmetry plane of the vehicle;

 at the rear and in the symmetry plane of the vehicle;

 respectively on the right and left sides and in the plane crossing the foremost axles;

EN 12736:2002 (E)

6

 respectively on the right and left sides and in the plane crossing the rear axles

8.2 Duration of measurement

It shall conform to the minimum values given in 7.5.3 in EN ISO 3744:1995

8.3 Reading

For each position, the total A-weighted sound power level shall be recorded Only the highest value of the six readings shall be reported, in a similar manner as described in ISO 362

9 Test report

The following data shall be recorded in the test report

9.1 Data of the test vehicle

9.1.1 Trade name or mark of the vehicle

9.1.2 Battery

9.1.2.1 Trade name and type of the battery

9.1.3 Charger

9.1.3.1 Trade name and type of the charger

9.2 Test site and ambient conditions

9.2.1 Ambient temperature

9.2.2 Barometric pressure

9.2.3 Relative humidity

9.3 Measuring instrument description

9.4 A-weighted background noise pressure level

9.5 Readings of the sound pressure levels with the vehicle, expressed in dB(A)

Annex A

(informative)

Different airborne noise limits existing in different European countries

Noise limits indicated in Table A.1 can not be directly compared because of the different test methods applied by different countries

Relevant legislative or other documents shall be consulted for precise information The important national documents are listed in the references

Table A.1 - Noise limits or noise limit recommendations in dB(A) for different countries and zones

Countries

France 45 35 50 40 60 50 70 60 Germany 45 35(30)e 50 35 60 45 70 70 Italy 50 40 55 45 60 50 70 70 Portugal 55 45 55 45 65 55 65 55

-a Specially protected areas, near hospitals and school, public parks and recreational areas.

b Purely residential areas.

c Mixed areas.

d Purely industrial areas.

e Recommended for flats belonging to hospitals only.

f In the UK, no dB(A) levels are specified, but it is an offence for noise to be emitted from a vehicle if it causes a nuisance in the opinion of the local authority.

The following reference documents have been used to establish Table A.1:

France: Decree of 20 August 1988

Germany: Technische Anleitung zum Schutz gegen Lärm (TA Lärm) (Technical guide for protection against

noise)

VDI Richtline 2058, Blatt 1 (VDI Code of practice 2058, Sheet 1)

Italy: Gazzetta ufficiale della repubblica italiana 8/3/1991- Serie generale n 57 pagine 4÷7 (Official Journal

of the Italian Republic – General series No 57 – pages 4 – 7)

Portugal: Decree 292/2000 of 14 November (General regulation on noise)

United Kingdom: Noise and statutory nuisance act 1993

BS EN

12736:2001

BSI

389 Chiswick High Road

London

W4 4AL

BSI — British Standards Institution

BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter

Revisions

British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions

It is the constant aim of BSI to improve the quality of our products and services

We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover

Tel: +44 (0)20 8996 9000 Fax: +44 (0)20 8996 7400

BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards

Buying standards

Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: +44 (0)20 8996 9001

Fax: +44 (0)20 8996 7001 Email: orders@bsi-global.com Standards are also available from the BSI website at http://www.bsi-global.com

In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested

Information on standards

BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre

Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: info@bsi-global.com Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details

of these and other benefits contact Membership Administration

Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001

Email: membership@bsi-global.com

Information regarding online access to British Standards via British Standards Online can be found at http://www.bsi-global.com/bsonline

Further information about BSI is available on the BSI website at http://www.bsi-global.com

Copyright

Copyright subsists in all BSI publications BSI also holds the copyright, in the

UK, of the publications of the international standardization bodies 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

This does not preclude the free use, in the course of implementing the standard,

of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained

Details and advice can be obtained from the Copyright & Licensing Manager Tel: +44 (0)20 8996 7070 Fax: +44 (0)20 8996 7553

Email: copyright@bsi-global.com