IEEE DRAFT C57.136 : D12 MAY 2000
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
DRAFT GUIDE FOR SOUND LEVEL ABATEMENT AND DETERMINATION FOR LIQUID-IMMERSED POWER TRANSFORMERS AND SHUNT REACTORS RATED OVER 500 KVA
04-11-2001
01-12-2013
1 SCOPE
2 REFERENCES
3 SOURCES OF SOUND
3.1 GENERAL CHARACTERISTICS
3.2 TRANSFORMERS
3.3 SHUNT REACTORS
3.4 FANS AND PUMPS
4 FACTORS AFFECTING SOUND LEVELS IN FIELD OPERATION
4.1 LOAD POWER FACTOR
4.2 LOADING BEYOND NAMEPLATE RATING
4.3 HARMONICS
4.4 DC MAGNETIZATION
4.5 RESONANCES
5 FACTORY-INSTALLED SOUND ABATEMENT METHODS
5.1 TYPICAL DESIGN METHODS FOR SOUND ABATEMENT
5.2 OTHER FACTORY-INSTALLED SOUND ABATEMENT METHODS
6 FIELD-INSTALLED SOUND ABATEMENT METHODS
6.1 TYPICAL FIELD-INSTALLED SOUND ABATEMENT METHODS
6.2 OTHER FIELD-INSTALLED SOUND ABATEMENT METHODS
7 ACTIVE SOUND CANCELLATION
7.1 SOUND CANCELLATION ON OR NEAR THE TANK
7.2 OTHER ACTIVE SOUND CANCELLATION TECHNIQUES
8 USEFUL SOUND LEVEL INFORMATION
8.1 SOUND PRESSURE LEVEL
8.2 SOUND POWER LEVEL
8.3 A-WEIGHTING SOUND SCALE
8.4 SOUND LEVEL CALCULATIONS
ANNEX A (INFORMATIVE) BIBLIOGRAPHY
ANNEX B (INFORMATIVE) ESTIMATION OF FAR-FIELD TRANSFORMER
SOUND LEVELS
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