IEC 60034-1 Ed. 15.0 en:2026

Rotating electrical machines - Part 1: Rating and performance

IEC 60034-1:2026 is available as IEC 60034-1:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60034-1:2026 is applicable to all rotating electric machines, except rotating electric machines for rail and road vehicles, which are covered by the IEC 60349 series of standards. Machines with integrated EMC-active components such as a variable frequency converter are considered being a power drive system (see the IEC 61800 series of standards). In such cases, this document applies to the motor component of the power drive system only. Machines within the scope of this document can also be subject to superseding, modifying or additional requirements in other standards, for example, IEC 60079 and IEC 60092.
 NOTE If particular clauses of this document are modified to meet special applications, for example machines subject to radioactivity or machines for aerospace, all other clauses apply insofar as they are compatible. This fifteenth edition cancels and replaces the fourteenth edition published in 2022. This edition constitutes a technical revision.
 This edition includes the following significant technical changes with respect to the previous edition:
 Clause 1: Clarification with respect to machines with integrated EMC-active components added
 Clause 2: Normative references updated
 Clause 3: Note on meaning of “agreement” deleted; list of abbreviations added
 Clause 4.2.9, 4.2.10: References to IEC TS 60034-25 deleted, as converter duty is now defined in 3.36
 Clause 5.1: Reference to IEC TS 60034-25 converted into note
 Clause 6.6 Clarification of requirements
 Clause 7.2.1: Reference to IEC TS 60034-25 converted into note
 Clause 7.5: Clarification of requirements
 Clause 7.6: Reference to IEC TS 60034-25 converted into note
 Clause 8.1: Clarification of references
 Clause 8.6.1: Clarification on choice of method for large machines
 Table 11: Updated values for thermal class 200 (N)
 Clause 8.10.3: Clarification of requirements
 Clause 9.2: Clarification on test voltage for old machines after rewinding
 Table 17: Items 9 and 10 merged and clarified
 Clause 9.7: Clarification on overspeed test for machines held at stock added
 Table 20: Clarification on test speed for converter duty machines
 Clause 10.2: Clarification of term ‘digital form’
 Clause :10.3 Note on QR code deleted
 Clause 11.1: Reference to protective earth test added
 Clause 13.1: Clarifying flowchart added
 Clause 13.2.2: Clarification on motors with integrated VSD added
 Clause 13.3: Clarification of requirements after consultation with ACEC
 Clause 13.5: Clarification of requirements after consultation with ACEC
 Clause 14: Note on safety converted to normal text