EN 60076-10:2001
(Main)Power transformers - Part 10: Determination of sound levels
Power transformers - Part 10: Determination of sound levels
Defines sound pressure and sound intensity measurement methods by which sound power levels of transformers, reactors and their associated cooling auxiliaries may be determined. The methods are applicable to transformers and reactors covered by the EN 60076 series, EN 60289, EN 60726 and the EN 61378 series, without limitation as regards size or voltage and when fitted with their normal cooling auxiliaries. This standard is primarily intended to apply to measurements made at the factory. Conditions on-site may be very different because of the proximity of objects, including other transformers. Nevertheless, the same general rules as are given in this standard may be followed when on-site measurements are made.
Leistungstransformatoren - Teil 10: Bestimmung der Geräuschpegel
Transformateurs de puissance - Partie 10: Détermination des niveaux de bruit
Disponible uniquement en anglais
Power transformers - Part 10: Determination of sound levels (IEC 60076-10:2001)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2002
1DGRPHãþD
SIST EN 60551:1997
SIST EN 60551:1997/A1:1998
Power transformers - Part 10: Determination of sound levels (IEC 60076-10:2001)
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 60076-10:2001
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 July 2001
ICS 29.180 Supersedes EN 60551:1992 + A1:1997
English version
Power transformers
Part 10: Determination of sound levels
(IEC 60076-10:2001)
Transformateurs de puissance Leistungstransformatoren
Partie 10: Détermination des Teil 10: Bestimmung der Geräuschpegel
niveaux de bruit (IEC 60076-10:2001)
(CEI 60076-10:2001)
This European Standard was approved by CENELEC on 2001-06-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60076-10:2001 E
Foreword
The text of document 14/390/FDIS, future edition 1 of IEC 60076-10, prepared by IEC TC 14, Power
transformers, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60076-10 on 2001-06-01.
This European Standard supersedes EN 60551:1992 + A1:1997.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-06-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A and B are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60076-10:2001 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60076-10:2001
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60076 Series Power transformers EN 60076 Series
IEC 60289 (mod) 1988 Reactors EN 60289 1994
IEC 60651 1979 Sound level meters EN 60651 1994
1)
IEC 60726 (mod) 1982 Dry-type power transformers HD 464 S1 1988
+ A2 1991
+ A3 1992
+ A4 1995
IEC 61043 1993 Electroacoustics - Instruments for the EN 61043 1994
measurement of sound intensity -
Measurement with pairs of pressure
sensing microphones
IEC 61378 Series Convertor transformers EN 61378 Series
ISO 3746 1995 Acoustics - Determination of sound EN ISO 3746 1995
power 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 EN ISO 9614-1 1995
power levels of noise sources using
sound intensity - Part 1: Measurement
at discrete points
1)
HD 464 S1 includes A1:1986 to IEC 60726:1982.
NORME CEI
INTERNATIONALE IEC
60076-10
INTERNATIONAL
Première édition
STANDARD
First edition
2001-05
Transformateurs de puissance –
Partie 10:
Détermination des niveaux de bruit
Power transformers –
Part 10:
Determination of sound levels
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60076-10 © IEC:2005 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9
1 Scope.13
2 Normative references .13
3 Terms and definitions .15
4 Instrumentation and calibration.17
5 Choice of test method.17
6 Load conditions .19
6.1 General .19
6.2 No-load current and rated voltage .19
6.3 Rated current and short-circuit voltage .19
6.4 Reduced-load current .21
7 Principal radiating surface .21
7.1 General .21
7.2 Transformers with or without cooling auxiliaries, dry-type transformers in
enclosures and dry-type transformers with cooling auxiliaries inside the
enclosure .21
7.3 Cooling auxiliaries mounted on a separate structure spaced ≥3 m away from
the principal radiating surface of the transformer.23
7.4 Dry-type transformers without enclosures.23
8 Prescribed contour .23
9 Microphone positions.23
10 Calculation of the area of the measurement surface .25
10.1 Measurements made at 0,3 m from the principal radiating surface.25
10.2 Measurements made at 2 m from the principal radiating surface.25
10.3 Measurements made at 1 m from the principal radiating surface.25
10.4 Measurements on test objects where safety clearance considerations require
a measurement distance which for all or part of the prescribed contour(s)
exceeds the provisions of 10.1 to 10.3 .25
11 Sound pressure method.27
11.1 Test environment.27
11.2 Sound pressure level measurements .31
11.3 Calculation of average sound pressure level .33
12 Sound intensity method .35
12.1 Test environment.35
12.2 Sound intensity level measurements .37
12.3 Calculation of average sound intensity level .37
13 Calculation of sound power level .39
14 Addition of no-load and load current sound power levels .39
15 Far-field calculations .41
16 Presentation of results.41
Annex A (informative) Narrow-band and time-synchronous measurements .57
Annex B (informative) Typical report of sound level determination .61
60076-10 © IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER TRANSFORMERS –
Part 10: Determination of sound levels
FOREWORD
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International Standard IEC 60076-10 has been prepared by IEC technical committee 1
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