I.S. EN ISO 17657-3:2007
Current
The latest, up-to-date edition.
RESISTANCE WELDING - WELDING CURRENT MEASUREMENT FOR RESISTANCE WELDING - PART 3: CURRENT SENSING COIL
Hardcopy , PDF
English
01-01-2007
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.
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Physical environment and operating conditions
5 Classification of current sensing coils and
designation of product
5.1 Class of current sensing coils
5.2 Standard values of the conversion coefficient
5.3 Designation of products
6 Requirements for current sensing coils
6.1 Current sensing coil and connecting lead
6.2 Conversion coefficient
6.3 Measuring accuracy
6.4 Mechanical strength
6.5 Setting position error
6.6 Influence of ambient temperature
6.7 Thermal property of cover materials
6.8 Test
7 Test procedures
7.1 Conversion coefficient
7.2 Measuring accuracy
7.3 Mechanical tests
7.4 Setting position error test
7.5 Thermal test
7.6 Contact test
8 Marking
Annex A (informative) Design of current sensing coils
Annex B (informative) Governing parameters of the
conversion coefficient
Annex C (informative) Type of current sensing coils and
their recommended specification range
Annex D (informative) Frequency response of current sensing
coils
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