IEC 60034-7 pdf download

IEC 60034-7 pdf download.Rotating electrical machines
IEC 60034 consists of the following parts, under the general title: Rotating electrical machines: Part 1: Rating and performance, issued as IEC 60034-1 Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles), issued as IEC 60034-2 Part 2A: First supplement: Measurement of losses by the calorimetric method, issued as IEC 60034-2A Part 3: Specific requirements for turbine-type synchronous machines, issued as IEC 60034-3 Part 4: Methods for determining synchronous machine quantities from tests, issued as IEC 60034-4 Part 5: Classification of degrees of protection provided by enclosures of rotating electrical machines (IP Code), issued as IEC 60034-5 Part 6: Methods of cooling (IC Code), issued as IEC 60034-6 Part 7: Classification of types of constructions and mounting arrangements (IM Code), issued as IEC 60034-7 Part 8: Terminal markings and direction of rotation of rotating machines, issued as IEC 60034-8 Part 9: Noise limits, issued as IEC 60034-9 Part 10: Conventions for description of synchronous machines, issued as IEC 60034-10 Part 11: Built-in thermal protection, Chapter 1: Rules for protection of rotating electrical machines, issued as IEC 60034-11Part 12: Starting performance of single-speed three-phase cage induction motors for voltages up to and including 660 V, issued as IEC 60034-12 Part 13: Specification for mill auxiliary motors, issued as IEC 60034-13 Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher – Measurement, evaluation and limits of the vibration severity, issued as IEC 60034-14 Part 15: Impulse voltage withstand levels of rotating a.c. machines with form-wound stator coils, issued as IEC 60034-15 Part 16-1: Excitation systems for synchronous machines. Chapter 1: Definitions, issued as IEC 60034-16-1 Part 16-2: Excitation systems for synchronous machines. Chapter 2: Models for power system studies, issued as IEC 60034-16-2 Part 18-1: Functional evaluation of insulation systems – Section 1: General guidelines, issued as IEC 60034-18-1 Part 18-21: Functional evaluation of insulation systems – Section 21: Test procedures for wire-wound windings – Thermal evaluation and classification, issued as IEC 60034-18-21 Part 18-31: Functional evaluation of insulation systems – Section 31: Test procedures for form-wound windings – Thermal evaluation and classification of insulation systems used in machines up to and including 50 MVA and 15 kV, issued as IEC 60034-18-31
1.1 Scope
This part of IEC 60034 specifies the IM Code, a classification of types of construction, mounting arrangements and the terminal box position of rotating electrical machines. Two systems of classification are provided as follows: – Code I (see section 2): An alpha-numeric designation applicable to machines with end- shield bearing(s) and only one shaft extension. – Code II (see section 3): An all-numeric designation applicable to a wider range of types of machines including types covered by Code I. The type of machine not covered by Code II should be fully described in words. The relationship between Code I and Code II is given in annex A. 1.2 Definitions For the purposes of this part of IEC 60034, the following definitions apply: 1.2.1 type of construction the arrangement of machine components with regard to fixings, bearing arrangement and shaft extension (IEV 60411-13-34) 1) 1.2.2 mounting arrangement the orientation on site of the machine as the whole with regard to shaft alignment and position of fixings (IEV 60411-13-35) 1.2.3 shaft extension a portion of a shaft extending beyond an extreme bearing (IEV 60411-13-07) NOTE The bearing may be on the machine itself or be part of an assembly comprising a machine and (an) additional bearing(s).1.2.4 drive-end of a machine (D-end) that end of the machine which accommodates the shaft end (IEV 60411-13-36) NOTE This is normally the driving end of a motor or the driven end of a generator. Where for some machines the above definition is inadequate, the D-end is defined as follows: a) Machine with two shaft extensions of different diameter: the end with the larger shaft diameter; b) Machine with a cylindrical shaft extension and a conical shaft extension of the same diameter: the end with cylindrical shaft extention; c) Machine with other arrangements: according to IEC 60034-8 if applicable; otherwise by agreement. NOTE The outer diameter of a forged-on flange is taken to be the diameter of the shaft extension. 1.2.5 non-drive end of the machine (N-end) that end of the machine opposite to the drive end (IEV 60411-13-37).