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
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
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 |
| UNE-EN 60740-1:2005 | Equivalent |
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