NF EN 50078 : 1994

Cooperating organizations
National foreword
Foreword
Section one: General
1 Scope
2 Normative references
3 Environmental conditions
4 Definitions
4.1 torch; gun
4.2 body
4.3 handle
4.4 nozzle
4.5 non-consumable electrode (TIG, plasma)
4.6 electrode wire (MIG, MAG, MOG)
4.7 contact tip (MIG, MAG, MOG)
4.8 cable-hose assembly
4.9 MIG/MAG torch
4.10 MOG torch
4.11 TIG torch
4.12 plasma torch
4.13 plasma welding torch
4.14 manual torch
4.15 mechanically guided torch
4.16 air cooled torch
4.17 liquid cooled torch
4.18 motorized torch
4.19 spool-on-torch
5 Classification
5.1 Process
5.2 Method of guidance
5.3 Voltage class
5.4 Type of cooling
Section two: Requirements and tests
6 Test conditions
7 Protection against electric shock
7.1 Insulation resistance
7.2 Dielectric strength
7.3 Protection against direct contact
7.3.1 Class M torches
8 Thermal rating
8.1 Temperature rise
8.2 Heating test
8.2.1 MIG/MAG and MOG torch
8.2.2 TIG and plasma welding torch
8.3 Duration of the heating test
8.4 Determination of the ambient air temperature
8.5 Cooling liquid
8.6 Resistance to weld spatter
9 Impact resistance
10 Marking
11 Instructions for use
Tables
1 Dielectric test voltages
2 Degree of protection for manual torches
3 Degree of protection for mechanically guided
       torches
4 Test values for MIG welding of aluminium alloys
5 Test values for MAG welding of mild steel
6 Test values for MAG welding with flux cored wire
7 Test values for MOG welding of mild steel
8 Test values for TIG welding
9 Test values for plasma welding
Figures
1 Device for testing the resistance to weld spatter
2 Device for the impact test
Annexes
A Additional terminology
B Position of the welding torches for the heating
       test
C Cooled copper block
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references

Specifies safety and construction requirements for torches and guns for MIG/MAG, MOG, TIG and plasma welding. Coverage includes definitions, environmental conditions, classification, protection against electric shock, thermal rating, impact resistance and marking. Also gives tables, diagrams and annexes.