Name: EN ISO 17657-1:2007
Brand: CEN

Resistance welding - Welding current measurement for resistance welding - Part 1: Guidelines for measurement (ISO 17657-1:2005)

Published date

06-20-2007

Publisher

Comite Europeen de Normalisation

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
DIN EN ISO 17657-1 E : 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