EN ISO 17657-1:2007
Current
The latest, up-to-date edition.
Resistance welding - Welding current measurement for resistance welding - Part 1: Guidelines for measurement (ISO 17657-1:2005)
20-06-2007
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Welding current measuring system
4.1 General
4.2 Applicability
4.3 Accuracy
4.4 Welding current meter with current sensing coil
5 Current sensors
5.1 Type of sensor
5.2 Selection of current sensor
5.3 Conversion coefficient
6 Tests and calibration of the welding current measuring
systems
7 Selection of requirements and test procedures for a
welding current measuring system
Annex A (normative) Definition of weld times
Annex B (informative) Types of integrator and equivalent
current sensing coil circuits
Annex C (informative) Conversion coefficient and maximum
output voltage of current sensing
ISO 17657-1:2005 specifies equipment for the calibration of measuring systems of welding current and indicating weld time in resistance welding using single-phase alternating current of frequency 50 Hz or 60 Hz, or direct current.It defines various basic terms for the measurement of welding current, and gives some basic information for users of welding current measuring systems including welding current meters with current sensing coil.
| Committee |
CEN/TC 121
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| UNI EN ISO 17657-1 : 2008 | Identical |
| NS EN ISO 17657-1 : 1ED 2007 | Identical |
| SN EN ISO 17657-1 : 2007 | Identical |
| ISO 17657-1:2005 | Identical |
| PN EN ISO 17657-1 : 2009 | Identical |
| NF EN ISO 17657-1 : 2007 | Identical |
| BS EN ISO 17657-1:2007 | Identical |
| UNE-EN ISO 17657-1:2008 | Identical |
| NEN EN ISO 17657-1 : 2007 | Identical |
| I.S. EN ISO 17657-1:2007 | Identical |
| DIN EN ISO 17657-2:2007-09 | Identical |
| NBN EN ISO 17657-1 : 2007 | Identical |
| DIN EN ISO 17657-1:2007-09 | Identical |
| ISO 17657-5:2005 | Resistance welding — Welding current measurement for resistance welding — Part 5: Verification of welding current measuring system |
| ISO 17657-2:2005 | Resistance welding — Welding current measurement for resistance welding — Part 2: Welding current meter with current sensing coil |
| ISO 17657-3:2005 | Resistance welding — Welding current measurement for resistance welding — Part 3: Current sensing coil |
| ISO 17657-4:2005 | Resistance welding — Welding current measurement for resistance welding — Part 4: Calibration system |
| ISO 669:2016 | Resistance welding Resistance welding equipment Mechanical and electrical requirements |
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