IEC/IEEE 62271-37-082:2012
(Main)High-voltage switchgear and controlgear - Part 37-082: Standard practice for the measurement of sound pressure levels on alternating current circuit-breakers
High-voltage switchgear and controlgear - Part 37-082: Standard practice for the measurement of sound pressure levels on alternating current circuit-breakers
IEC/IEEE 62271-37-082:2012(E) provides methods for the measurement of sound pressure level produced by outdoor alternating current circuit-breakers in a free-field environment. These methods may also be used indoors or in restricted field, provided that precautions are observed in the measurement and interpretation of the results. This standard has been prepared by subcommittee 17A: High-voltage switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear, in cooperation with the Switchgear Committee of the IEEE Power & Energy Society, under the IEC/IEEE Dual Logo Agreement between IEC and IEEE. The contents of the corrigendum of January 2014 have been included in this copy.
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IEC/IEEE 62271-37-082
Edition 1.0 2012-10
INTERNATIONAL
STANDARD
High-voltage switchgear and controlgear –
Part 37-082: Standard practice for the measurement of sound pressure levels on
alternating current circuit-breakers
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IEC/IEEE 62271-37-082
Edition 1.0 2012-10
INTERNATIONAL
STANDARD
High-voltage switchgear and controlgear –
Part 37-082: Standard practice for the measurement of sound pressure levels on
alternating current circuit-breakers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
R
ICS 29.130.10 ISBN 978-2-83220-406-1
– 2 – 62271-37-082 © IEC/IEEE:2012(E)
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Terms and definitions . 6
3 Acoustical environment . 9
3.1 Ambient noise . 9
3.2 Wind conditions . 9
3.3 Air condition . 9
3.4 Local topography . 9
4 Instrumentation . 10
4.1 Sound level meter . 10
4.1.1 General . 10
4.1.2 Preferred sound level meter. 10
4.1.3 Peak and time average . 10
4.2 Calibration capability . 10
4.3 Supplemental instrumentation . 10
5 Type test methods . 10
5.1 General test requirements . 10
5.1.1 General . 10
5.1.2 Sound pressure level measurements . 10
5.1.3 No load conditions . 11
5.1.4 Impulse noise measurement . 11
5.1.5 Location of microphone . 11
5.1.6 Orientation of microphone . 11
5.2 Near-field measurements . 11
5.2.1 Type of noise measurements . 11
5.2.2 Near field measurement with fully opened doors . 12
5.2.3 Near field measurement with fully closed doors . 12
5.3 Far-field measurements . 12
5.3.1 Type of noise measurements . 12
5.3.2 Far field measurement . 13
5.3.3 Equivalent data . 14
5.4 Data . 14
5.4.1 General . 14
5.4.2 Circuit-breaker being tested . 14
5.4.3 Environment . 15
5.4.4 Instrumentation. 15
5.4.5 Acoustical data . 15
5.4.6 Miscellaneous . 15
5.5 Report . 15
5.5.1 Completeness of the report. 15
5.5.2 Conversion . 15
6 Field test methods . 17
6.1 General . 17
6.2 Wind conditions . 17
6.3 Circuit-breaker operating conditions . 17
6.3.1 Operating conditions . 17
62271-37-082 © IEC/IEEE:2012(E) – 3 –
6.3.2 Specific conditions. 17
6.3.3 Measurements . 17
6.4 Microphone locations . 17
7 Measurements to be taken . 18
7.1 Limitation of the measurement . 18
7.2 Measurement of impulsive noise. 18
7.3 Data and report . 18
Bibliography . 19
Figure 1 – Location of measurement points with respect to the reference
parallelepiped for near field measurements . 12
Figure 2 – Location of measurement points with respect to circuit-breaker outline for
far field measurements . 14
Figure 3 – Measurement of sound pressure levels of a.c. circuit-breakers – Record
form . 16
Table 1 – Wind conditions for sound measurements . 9
– 4 – 62271-37-082 © IEC/IEEE:2012(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 37-082: Standard practice for the measurement of sound
pressure levels on alternating current circuit-breakers
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