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IEC 60034-9-ed.5.0
Rotating electrical machines - Part 9: Noise limits
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STANDARD published on 14.10.2021
The information about the standard:
Designation standards: IEC 60034-9-ed.5.0
Publication date standards: 14.10.2021
SKU: NS-1041435
The number of pages: 40
Approximate weight : 120 g (0.26 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60034-9-ed.5.0 :
IEC 60034-9:2021 specifies test methods for the determination of sound power level of rotating electrical machines and specifies maximum A-weighted sound power levels for factory acceptance testing of network-supplied, rotating electrical machines in accordance with lEC 60034-1, having methods of cooling according to lEC 60034-6 and degrees of protection according to lEC 60034-5, and having the following characteristics: - standard design, either AC or DC, without additional special electrical, mechanical, or acoustical modifications intended to reduce the sound power level - rated output from 1 kW (or kVA) up to and including 5 500 kW (or kVA) - rated speed not greater than 3 750 min–1 This fifth edition cancels and replaces the fourth edition, published in 2003 and its amendment 1, published in 2007. This edition includes the following significant technical changes with respect to the previous edition: a) In Table 2 and Table 3 cooling methods IC01, IC11, IC21 and IC31, IC71, IC81 are now covered. b) This edition adds Table 3 for 60 Hz machines, whereas Table 2, which covers only 50 Hz machines, has no change in levels. c) In Table 3, grade A is added to harmonize the highest levels seen in IEC and NEMA, whereas grade B was added to harmonize the lowest, more restrictive levels seen in IEC and NEMA. d) The clause “Determination of noise increments caused by converter supply” has been shifted to Annex B and renamed “Information on typical noise increments caused by converter supply”. IEC 60034-9:2021 specifie les methodes d’essai pour la determination du niveau de puissance acoustique des machines electriques tournantes et specifie les niveaux maximaux de puissance acoustique ponderee A pour les essais de reception en usine des machines electriques tournantes alimentees par reseau conformes a l’IEC 60034-1, dont les modes de refroidissement sont conformes a l’IEC 60034-6 et les degres de protection conformes a l’IEC 60034-5, et qui presentent les caracteristiques suivantes: - conception normalisee, courant alternatif ou courant continu, sans modifications speciales electriques, mecaniques ou acoustiques destinees a reduire le niveau de puissance acoustique - puissance assignee de 1 kW (ou kVA) jusqua 5 500 kW inclus (ou kVA) - vitesse assignee inferieure ou egale a 3 750 min–1 Cette cinquieme edition annule et remplace la quatrieme edition, parue en 2003 et son amendement 1, paru en 2007. Cette edition inclut les modifications techniques majeures suivantes par rapport a l’edition precedente: a) Le Tableau 2 et le Tableau 3 couvrent desormais les methodes de refroidissement IC01, IC11, IC21 et IC31, IC71, IC81. b) La presente edition ajoute le Tableau 3 pour les machines de 60 Hz, tandis que le Tableau 2, qui ne couvre que les machines de 50 Hz, ne presente pas de modification de niveaux. c) Dans le Tableau 3, l’ajout du degre A vise a harmoniser les niveaux les plus eleves definis par l’IEC et NEMA, tandis que l’ajout du degre B visait a harmoniser les niveaux plus faibles mais plus restrictifs egalement definis par l’IEC et NEMA. d) Larticle "Determination de l’augmentation de bruit provoquee par l’alimentation du convertisseur" a ete transfere dans l’Annexe B et renomme "Informations sur l’augmentation type de bruit provoquee par l’alimentation du convertisseur".
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