I.S. EN 60740-1:2005
Current
The latest, up-to-date edition.
LAMINATIONS FOR TRANSFORMERS AND INDUCTORS - PART 1: MECHANICAL AND ELECTRICAL CHARACTERISTICS
Hardcopy , PDF
English
01-01-2005
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FOREWORD
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Materials and lamination thicknesses
4.1 Materials
4.2 Nominal lamination thickness
4.3 Minimum stacking factor
5 Designation of laminations and lamination strips
5.1 Specified complete shapes
5.2 Lamination strips for specified shapes
5.3 Lamination strips for non-specified laminations
6 Packing and marking
7 Electrical tests
7.1 General
7.2 Core constants
7.3 Magnetic path length
7.4 Core cross-section
8 General conditions for electrical measurements
8.1 Atmospheric conditions
8.2 Test coils
8.3 Test cores
8.4 Harmonic content of the voltage
9 Measurements at high field strength
9.1 General
9.2 Measurement of power loss
9.3 Measurement of total apparent power
10 Measurements at low and medium field strength
10.1 General
10.2 Measurement of amplitude permeability
11 Preferred ranges of laminations
12 Dimensions and tolerances
12.1 Dimensions
12.2 Tolerances
12.3 Symmetry tolerances
13 Dimensions and effective parameters
13.1 General
13.2 Lamination strips Type YS
13.3 Laminations Type YEI 1
13.4 Laminations Type YUI 1
13.5 Lamination Types YUI 2
13.6 Lamination Types YEx 2, YEE 2 and YEI 2
13.7 Lamination Types YEE 2-L
13.8 Lamination Types YEx 3, YEE 3, YEF 3, YEI 3 and YEL 3
13.9 Lamination Types YEx 4, YEE 4 and YEF 4
13.10 Laminations Type YM 1
14 Electrical characteristics for materials
15 Specific total apparent power for laminations
16 Specific power loss for laminations
17 Mechanical characteristics for laminations
17.1 General appearance and conditions
17.2 Cut and punch edge
17.3 Camber
17.4 Distortion
17.5 Bending
17.6 Insulation
17.7 Welding
Annex A (informative) Conversion of polarisation and field
strength into specific total apparent power
A.1 Specific total apparent power from polarisation and
field strength
A.2 Equations for the curves of the magnetic materials
A.3 Constants for non-oriented silicon steel C 21
A.4 Specific reactive power and specific power loss for
non-oriented silicon steel C 21
A.5 Constants for grain-oriented silicon steel C 22
A.6 Specific reactive power and specific power loss for
grain-oriented silicon steel C 22
A.7 Influence of the shape on the electrical
characteristics for grain-oriented silicon steel
C 22
Bibliography
Provides the characteristics of laminations.
| DevelopmentNote |
For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
|
| DocumentType |
Standard
|
| Pages |
72
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Current
|
| Standards | Relationship |
| BS EN 60740-1:2005 | Identical |
| EN 60740-1:2005 | Identical |
| NBN EN 60740-1 : 2007 | Identical |
| NF EN 60740-1 : 2006 | Identical |
| IEC 60740-1:2005 | Identical |
| DIN EN 60740-1:2006-05 | Identical |
| IEC 61021-1:1990 | Laminated core packages for transformers and inductors used in telecommunication and electronic equipment - Part 1: Dimensions |
| IEC 61797-1:1996 | Transformers and inductors for use in telecommunication and electronic equipment - Main dimensions of coil formers - Part 1: Coil formers for laminated cores |
| IEC 60050-221:1990 | International Electrotechnical Vocabulary (IEV) - Part 221: Magnetic materials and components |
| IEC 60740-2:1993 | Laminations for transformers and inductors for use in telecommunication and electronic equipment - Part 2: Specification for the minimum permeabilities of laminations made of soft magnetic metallic materials |
| IEC 61021-2:1995 | Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment - Part 2: Electrical characteristics for cores using YEE2 laminations |
| EN 20286-1 : 1993 | ISO SYSTEM OF LIMITS AND FITS - BASES OF TOLERANCES, DEVIATIONS AND FITS |
| EN 61021-2:1997 | Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment - Part 2: Electrical characteristics for cores using YEE 2 laminations |
| IEC 60404-8-4:2013 | Magnetic materials - Part 8-4: Specifications for individual materials - Cold-rolled non-oriented electrical steel strip and sheet delivered in the fully-processed state |
| ISO 286-1:2010 | Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 1: Basis of tolerances, deviations and fits |
| IEC 60404-8-7:2017 | Magnetic materials - Part 8-7: Specifications for individual materials - Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully processed state |
| IEC 60404-1:2016 | Magnetic materials - Part 1: Classification |
| IEC 60404-11:1991+AMD1:1998+AMD2:2012 CSV | Magnetic materials - Part 11: Method of test for the determination of surface insulation resistance of magnetic sheet and strip |
| EN 61021-1:1997 | Laminated core packages for transformers and inductors used in telecommunication and electronic equipment - Part 1: Dimensions |
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