BS EN 60974-2:2013
$102.76
Arc welding equipment – Liquid cooling systems
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 22 |
This part of IEC 60974 specifies safety and construction requirements for industrial and professional liquid cooling systems used in arc welding and allied processes to cool torches.
This part of IEC 60974 is applicable to stand-alone liquid cooling systems that are either connected to a separate welding power source or built into the welding power source enclosure.
This part of IEC 60974 is not applicable to refrigerated cooling systems.
NOTE 1 Typical allied processes are electric arc cutting and arc spraying.
NOTE 2 This part of IEC 60974 does not include electromagnetic compatibility (EMC) requirements.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 8 | 1 Scope 2 Normative references 3 Terms and definitions |
| 9 | 4 Environmental conditions 5 Tests 5.1 Test conditions 5.2 Measuring instruments 5.3 Conformity of components 5.4 Type tests 5.5 Routine tests |
| 10 | 6 Protection against electric shock 6.1 Insulation 6.1.1 General 6.1.2 Clearances 6.1.3 Creepage distances 6.1.4 Insulation resistance 6.1.5 Dielectric strength 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) 6.3.1 Protective provisions 6.3.2 Isolation between windings of the supply circuit and the welding circuit 6.3.3 Internal conductors and connections 6.3.4 Touch current in fault condition 6.4 Connection to the supply network 6.4.1 Supply voltage 6.4.2 Multi-supply voltage |
| 11 | 6.4.3 Means of connection to the supply circuit 6.4.4 Marking of terminals 6.4.5 Protective circuit 6.4.6 Cable anchorage 6.4.7 Inlet openings 6.4.8 Supply circuit on/off switching device 6.4.9 Supply cables 6.4.10 Supply coupling device (attachment plug) 6.5 Leakage current between welding circuit and protective earth |
| 12 | 7 Mechanical provisions 7.1 General 7.2 Cooling liquid overflow 7.3 Hose coupling devices and hose connections 8 Cooling system 8.1 Rated maximum pressure Figures Figure 1 – Leakage current measurement configuration |
| 13 | 8.2 Thermal requirements 8.2.1 Heating test 8.2.2 Tolerances of test parameters 8.2.3 Duration of test 8.3 Pressure and temperature 9 Abnormal operation 9.1 General requirements 9.2 Stalled test |
| 14 | 10 Cooling power |
| 15 | 11 Rating plate 11.1 General 11.2 Description Figure 2 – Measuring circuit for determination of the cooling power Table 1 – Example of cooling liquid data at 60 (C |
| 16 | 11.3 Contents Figure 3 – Principle of the rating plate of stand-alone cooling systems |
| 17 | 11.4 Tolerances 12 Instructions and markings 12.1 Instructions 12.2 Markings 12.2.1 General 12.2.2 Inlet and outlet |
| 18 | 12.2.3 Pressure warning |
| 19 | Annex A (informative) Example diagram of built-in and stand-alone liquid cooling systems Figure A.1 – Example diagram of built-in liquid cooling systems Figure A.2 – Example diagram of stand-alone liquid cooling systems |
| 20 | Annex B (informative) Example for a rating plate of stand-alone cooling system |
