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IEC 60034-12-ed.4.0
Rotating electrical machines - Part 12: Starting performance of single-speed three-phase cage induction motors
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STANDARD published on 22.5.2024
The information about the standard:
Designation standards: IEC 60034-12-ed.4.0
Publication date standards: 22.5.2024
SKU: NS-1186456
The number of pages: 50
Approximate weight : 150 g (0.33 lbs)
Country: International technical standard
Category: Technical standards IEC
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Annotation of standard text IEC 60034-12-ed.4.0 :
IEC 60034-12:2024 is available as IEC 60034-12:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-12:2024 specifies the parameters for eight designs of starting performance of single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034-1 that: - have a rated voltage up to 1 000 V; - are intended for direct-on-line or star-delta starting; - are rated on the basis of duty type S1; - are constructed to any degree of protection as defined in IEC 60034-5 and explosion protection. This document also applies to dual voltage motors provided that the flux saturation level is the same for both voltages. This fourth edition cancels and replaces the third edition published in 2016. Aligned with the requirements for explosion protected motors from TC31 WG27 - new clause on methods for measuring locked-rotor current and torque; - new informative annex on the general current and torque characteristics with locked rotor; - new informative annex on correction of voltage and frequency; - aligned with the requirements for explosion protected motors from TC31 WG27. IEC 60034-12:2024 est disponible sous forme de IEC 60034-12:2024 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis ledition precedente.LIEC 60034-12:2024 specifie les parametres de huit conceptions de caracteristiques de demarrage de moteurs triphases a induction a cage a une seule vitesse fonctionnant a 50 Hz ou 60 Hz conformes a lIEC 60034-1, qui: - ont des tensions assignees jusqua 1 000 V; - sont prevus pour demarrage direct ou etoile-triangle; - sont dimensionnes pour le service type S1; - peuvent avoir nimporte quel degre de protection tel quil est defini dans lIEC 60034-5 et incluant les protections contre les explosions. Ce document sapplique egalement aux moteurs bitension a condition que le niveau de saturation du flux soit le meme aux deux tensions. Cette quatrieme edition annule et remplace la troisieme edition parue en 2016. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: - aligne sur les exigences du CE 31, GT 27, concernant les moteurs antideflagrants; - nouvel article relatif aux methodes de mesure du courant et du couple a rotor bloque; - nouvelle annexe informative relative aux caracteristiques generales de courant et de couple a rotor bloque; - nouvelle annexe informative relative a la correction de la tension et de la frequence.
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