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IEEE 62271-37-082-2012

IEEE 62271-37-082-2012

$54.17

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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IEEE 2012
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Revision Standard – Active. This standard 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.

PDF Catalog

PDF Pages PDF Title
1 IEC/IEEE 62271-37-082-2012 Front Cover
4 CONTENTS
6 FOREWORD
8 1 Scope
2 Terms and definitions
11 3 Acoustical environment
3.1 Ambient noise
3.2 Wind conditions
3.3 Air condition
3.4 Local topography
Table 1 – Wind conditions for sound measurements
12 4 Instrumentation
4.1 Sound level meter
4.1.1 General
4.1.2 Preferred sound level meter
4.1.3 Peak and time average
4.2 Calibration capability
4.3 Supplemental instrumentation
5 Type test methods
5.1 General test requirements
5.1.1 General
5.1.2 Sound pressure level measurements
13 5.1.3 No load conditions
5.1.4 Impulse noise measurement
5.1.5 Location of microphone
5.1.6 Orientation of microphone
5.2 Near-field measurements
5.2.1 Type of noise measurements
14 5.2.2 Near field measurement with fully opened doors
5.2.3 Near field measurement with fully closed doors
5.3 Far-field measurements
5.3.1 Type of noise measurements
Figure 1 – Location of measurement points with respect to the reference parallelepiped for near field measurements
15 5.3.2 Far field measurement
16 5.3.3 Equivalent data
5.4 Data
5.4.1 General
5.4.2 Circuit-breaker being tested
Figure 2 – Location of measurement points with respect to circuit-breaker outline for far field measurements
17 5.4.3 Environment
5.4.4 Instrumentation
5.4.5 Acoustical data
5.4.6 Miscellaneous
5.5 Report
5.5.1 Completeness of the report
5.5.2 Conversion
18 Figure 3 – Measurement of sound pressure levels of a.c. circuit-breakers – Record form
19 6 Field test methods
6.1 General
6.2 Wind conditions
6.3 Circuit-breaker operating conditions
6.3.1 Operating conditions
6.3.2 Specific conditions
6.3.3 Measurements
6.4 Microphone locations
20 7 Measurements to be taken
7.1 Limitation of the measurement
7.2 Measurement of impulsive noise
7.3 Data and report
21 Bibliography

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IEEE 62271-37-082-2012
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