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BS EN IEC 60974-3:2019

BS EN IEC 60974-3:2019

$142.49

Arc welding equipment – Arc striking and stabilizing devices

Published By Publication Date Number of Pages
BSI 2019 28
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This part of IEC 60974 specifies safety requirements for industrial and professional ARC STRIKING and ARC STABILIZING DEVICES used in arc welding and allied processes.

This document is applicable to ARC STRIKING and STABILIZING DEVICES which are stand-alone (separate from the welding equipment) or built in (housed in a single enclosure with other arc welding equipment).

NOTE 1 Typical allied processes are, for example, plasma arc cutting and arc spraying.

NOTE 2 This document does not include electromagnetic compatibility (EMC) requirements.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
6 Annex ZZ (informative)Relationship between this European standard and the safety objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be covered
7 English
CONTENTS
9 FOREWORD
11 1 Scope
2 Normative references
3 Terms and definitions
12 4 Environmental conditions
5 Tests
5.1 Test conditions
5.2 Measuring instruments
5.3 Conformity of components
5.4 Type tests
13 5.5 Routine tests
5.5.1 Stand-alone unit
5.5.2 Built-in unit
6 Protection against electric shock
6.1 Insulation
6.1.1 General
6.1.2 Clearances
6.1.3 Creepage distances
14 6.1.4 Insulation resistance
6.1.5 Dielectric strength
Table 1 ā€“ Minimum clearances and creepage distancesfor arc striking and stabilizing circuits
15 6.2 Protection against electric shock in normal service (direct contact)
6.3 Protection against electric shock in case of a fault condition (indirect contact)
6.4 Protective provision
7 Thermal requirements
8 Thermal protection
9 Abnormal operation
16 10 Connection to the supply network
11 Output
11.1 Rated peak voltage
Figures
Figure 1 ā€“ Rated peak voltage
Table 2 ā€“ Maximum peak voltages
17 11.2 Impulse current
11.2.1 Risk of electric shock
11.2.2 Electric charge
11.2.3 Direct contact
Figure 2 ā€“ Measurement of electric charge of impulse current
18 11.2.4 Series contact
Figure 3 ā€“ Measuring circuit for direct contact
19 11.3 Mean energy
Figure 4 ā€“ Measuring circuit for serial contact
20 11.4 Output circuit capacitance discharging
11.5 Additional requirements
Figure 5 ā€“ Measurement of mean energy
Figure 6 ā€“ Measuring circuit for capacitance discharging
21 12 Control circuits
13 Hazard reducing device
14 Mechanical provisions
15 Rating plate
15.1 General requirements
22 15.2 Description
15.3 Contents
Figure 7 ā€“ Rating plate
23 16 Adjustment of the output
17 Instructions and markings
17.1 Instructions
17.2 Markings
24 Annex A (informative)Examples of coupling systems for arc striking and stabilizing devices
Figure A.1 ā€“ Examples of coupling systems forarc striking and stabilizing devices
25 Annex B (informative)Example of a rating plate
Figure B.1 ā€“ Stand-alone unit
26 Bibliography

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BS EN IEC 60974-3:2019
$142.49