EN 60076-10:2016
(Main)Power transformers - Part 10: Determination of sound levels
Power transformers - Part 10: Determination of sound levels
IEC 60076-10:2016 defines sound pressure and sound intensity measurement methods from which sound power levels of transformers, reactors and their associated cooling devices are determined. The methods are applicable to transformers, reactors and their cooling devices - either fitted to or separate from the transformer - as covered by the IEC 60076 and IEC 61378 series. This standard is primarily intended to apply to measurements made at the factory. Conditions on-site can be very different because of the proximity of objects, including other transformers. Nevertheless, this standard is applied to the extent possible for on site measurements. This edition includes the following significant technical changes with respect to the previous edition: - additional useful definitions introduced; - definition of distribution type transformers introduced for the purpose this standard; - new clause for sound level measurement specification introduced; - requirement for 1/3 octave band measurements introduced for transformers other than distribution type transformers; - standard measurement distance changed from 0,3 m to 1 m for transformers other than distribution type transformers; - height of measurement surface is now clearly defined to count from the reflecting plane; - measurement surface formula unified; - correction criteria for intensity method introduced; - rules for sound measurements on dry-type reactors introduced; - figures revised; - new informative test report templates introduced (Annex B); - IEC 60076-10-1 (application guide) revised in parallel providing worthwhile information for the use of this standard.
Leistungstransformatoren - Teil 10: Bestimmung der Geräuschpegel
Transformateurs de puissance - Partie 10: Détermination des niveaux de bruit
L'IEC 60076-10:2016 définit les méthodes de mesure de la pression acoustique et de l'intensité acoustique par lesquelles sont déterminés les niveaux de puissance acoustique des transformateurs, des bobines d'inductance et de leurs dispositifs de refroidissement associés. Les méthodes sont applicables aux transformateurs, aux bobines d'inductance et à leurs dispositifs de refroidissement - qu'ils soient installés sur le transformateur ou en soient séparés - comme décrit dans les séries IEC 60076 et IEC 61378. La présente norme est principalement destinée aux mesures effectuées en usine. Les conditions sur le site peuvent être très différentes, à cause de la proximité d'autres objets, en particulier d'autres transformateurs. Néanmoins, la présente norme est appliquée dans la mesure du possible aux mesures sur le site. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - introduction de définitions utiles supplémentaires; - introduction d'une définition des transformateurs de distribution pour les besoins de la présente norme; - introduction d'un nouvel article relatif à la spécification des mesures du niveau de bruit; - introduction d'une exigence relative aux mesures de la bande de 1/3 d'octave concernant les transformateurs autres que les transformateurs de distribution; - modification de la distance de mesure normalisée qui passe de 0,3 m à 1 m pour les transformateurs autres que les transformateurs de distribution; - la hauteur de la surface de mesure est désormais clairement définie à partir du plan réfléchissant; - unification de la formule relative à la surface de mesure; - introduction de critères de correction concernant la méthode d'intensité; - introduction de règles relatives aux mesures du son sur des bobines d'inductance de type sec; - révision des figures; - introduction de nouveaux modèles de rapport d'essai informatifs (Annexe B); - révision de l'IEC 60076-10-1 (guide d'application) en parallèle et ajout d'informations utiles relatives à l'utilisation de la présente norme.
Močnostni transformatorji - 10. del: Opredelitev zvočnih jakosti
Ta del standarda IEC 60076 določa metode merjenja zvočnega tlaka in jakosti, na podlagi katerih se določijo ravni zvočne moči transformatorjev, reaktorjev in njihovih hladilnih naprav.
OPOMBA: za namene tega standarda izraz »transformator« pogosto pomeni »transformator ali reaktor«.
Metode se uporabljajo za transformatorje, reaktorje in njihove hladilne naprave (vgrajene v transformator ali ločene), kot določata skupini standardov IEC 60076 in IEC 61378.
Ta standard je namenjen zlasti uporabi za merjenja v tovarni. Pogoji na mestu uporabe se lahko zelo razlikujejo zaradi bližine objektov, vključno z drugimi transformatorji. Kljub temu se standard v največji možni meri uporablja za merjenja na mestu uporabe.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2017
1DGRPHãþD
SIST EN 60076-10:2002
0RþQRVWQLWUDQVIRUPDWRUMLGHO 2SUHGHOLWHY]YRþQLKMDNRVWL
Power transformers - Part 10: Determination of sound levels
Leistungstransformatoren - Teil 10: Bestimmung der Geräuschpegel
Transformateurs de puissance - Partie 10: Détermination des niveaux de bruit
Ta slovenski standard je istoveten z: EN 60076-10:2016
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
29.180 Transformatorji. Dušilke Transformers. Reactors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 60076-10
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2016
ICS 29.180 Supersedes EN 60076-10:2001
English Version
Power transformers -
Part 10: Determination of sound levels
(IEC 60076-10:2016)
Transformateurs de puissance - Leistungstransformatoren -
Partie 10: Détermination des niveaux de bruit Teil 10: Bestimmung der Geräuschpegel
(IEC 60076-10:2016) (IEC 60076-10:2016)
This European Standard was approved by CENELEC on 2016-10-17. CENELEC 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 CEN-CENELEC
Management Centre or to any CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60076-10:2016 E
European foreword
This document (EN 60076-10:2016) consists of the text of IEC 60076-10:2016 prepared by IEC/TC 14
"Power transformers".
The following dates are fixed:
(dop) 2017-10-17
• latest date by which the document has to be
implemented
at national level by publication of an identical
national standard or by endorsement
• latest date by which the national standards conflicting (dow) 2019-10-17
with the document have to be withdrawn
This document supersedes EN 60076-10:2001.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60076-10:2016 was approved by CENELEC as a European
Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year
IEC 60076-1 2011 Power transformers - EN 60076-1 2011
Part 1: General
IEC 60076-8 1997 Power transformers - - -
Part 8: Application guide
IEC 61043 1993 Electroacoustics - Instruments for the EN 61043 1994
measurement of sound intensity -
Measurement with pairs of pressure
sensing microphones
IEC 61672-1 - Electroacoustics - Sound level meters - EN 61672-1 -
Part 1: Specifications
IEC 61672-2 - Electroacoustics - Sound level meters - EN 61672-2 -
Part 2: Pattern evaluation tests
ISO 3382-2 2008 Acoustics - Measurement of room EN ISO 3382-2 2008
acoustic parameters -
Part-2: Reverberation time in ordinary
rooms
ISO 3746 2010 Acoustics - Determination of sound power EN ISO 3746 2010
levels and sound energy levels of noise
sources using sound pressure - Survey
method using an enveloping measurement
surface over a reflecting plane
ISO 9614-1 1993 Acoustics - Determination of sound power EN ISO 9614-1 2009
levels of noise sources using sound
intensity -
Part 1: Measurement at discrete points
ISO 9614-2 1996 Acoustics - Determination of sound power EN ISO 9614-2 1996
levels of noise sources using sound
intensity -
Part-2: Measurement by scanning
IEC 60076-10 ®
Edition 2.0 2016-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Power transformers –
Part 10: Determination of sound levels
Transformateurs de puissance –
Partie 10: Détermination des niveaux de bruit
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.180 ISBN 978-2-8322-3252-1
– 2 – IEC 60076-10:2016 IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references. 8
3 Terms and definitions . 9
4 Sound power for different loading conditions . 11
4.1 General . 11
4.2 Sound power at no-load excitation . 12
4.3 Sound power of the cooling device(s) . 12
4.4 Sound power due to load current . 12
5 Sound level measurement specification . 14
6 Instrumentation, calibration and accuracy . 15
7 Principal radiating surface . 16
7.1 General . 16
7.2 Transformers with or without cooling device . 16
7.3 Transformers in enclosures with cooling devices inside the enclosure . 16
7.4 Transformers in enclosures with cooling devices outside the enclosure . 17
7.5 Cooling devices mounted on a separate structure where the distance
between the two principal radiating surfaces is ≥ 3 m . 17
7.6 Dry-type transformers . 17
7.7 Dry-type air-core reactors . 17
8 Prescribed contour . 18
9 Microphone positions . 19
10 Calculation of the measurement surface area . 19
10.1 Measurement surface area for measuring distances up to 30 m . 19
10.2 Measurement surface area for measuring distances larger than 30 m . 19
11 Sound measurement . 20
11.1 Test conditions . 20
11.1.1 Placement of test object . 20
11.1.2 Test energisation options . 20
11.1.3 Test application details . 21
11.1.4 Prevailing ambient conditions . 21
11.2 Sound pressure method . 21
11.2.1 General . 21
11.2.2 Test procedure . 21
11.2.3 Calculation of the spatially averaged sound pressure level . 22
11.2.4 Validation of test measurements with respect to background noise . 23
11.2.5 Calculation of environmental correction K . 23
11.2.6 Final correction for steady-state background noise and test environment . 25
11.3 Sound intensity method . 26
11.3.1 General . 26
11.3.2 Test procedure . 26
11.3.3 Calculation of average normal sound intensity and sound pressure level . 27
11.3.4 Measurement validation . 28
11.3.5 Final correction based on P-I index and direction flag . 28
IEC 60076-10:2016 IEC 2016 – 3 –
12 Determination of sound power level by calculation . 29
13 Logarithmic addition and subtraction of individual sound levels . 29
14 Far-field calculations for distances larger than 30 m . 30
15 Presentation of results . 31
Annex A (informative) Narrow-band and time-synchronous measurements . 40
A.1 General considerations . 40
A.2 Narrow-band measurement . 40
A.2.1 General . 40
A.2.2 Post processing of narrow-band measurements to exclude background
noise . 41
A.3 Time-synchronous averaging technique . 41
Annex B (informative) Typical report of sound level determination . 42
B.1 Sound pressure method . 42
B.2 Sound pressure method – Appendix for the point-by-point procedure. 50
B.3 Sound intensity method . 51
B.4 Sound intensity method – Appendix for the point-by-point procedure . 59
Bibliography . 60
Figure 1 – Typical microphone path / positions for sound measurement on
transformers excluding cooling devices . 33
Figure 2 – Typical microphone path / positions for sound measurement on transformers
having cooling devices mounted either directly on the tank or on a separate structure
spaced < 3 m away from the principal radiating surface of the main tank . 34
Figure 3 – Typical microphone path / positions for sound measurement on transformers
having separate cooling devices spaced < 3 m away from the principal radiating
surface of the main tank . 35
Figure 4 – Typical microphone path / positions for sound me
...
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