Skip to main content
TU-Clausthal Centre for Material Technology

Arc and plasma welding

EWM Alpha Q 551 Pulse D inverter welder

  • Water-cooled inverter welder, pulse, with double wire feeder
  • Two welding tasks with one power source
  • Alternate welding of e.g. root and cover layers, solid and/or cored wire, different materials and wire thicknesses
MIG/MAG TIG E-hand
Welding current setting range 5 - 550A 5 - 550A 5 - 550A
ED at 25°C/40°C 25°C/40°C 25°C/40°C
60% 550A/550A 550A/550A 550A/550A
80% 520A/- 520A/- 520A/-
100% 450A/420A 450A/420A 450A/420A
Open circuit voltage 93 V
Mains frequency 50Hz/60Hz
Max. connected load 28.8kVA 22.2kVA 29.2kVA
cos φ 0,99
Efficiency 0,88
Protection class IP 23
Standards IEC 60 974-1; -10/CE/S mark/EMC class A

Fronius VR 7000 CMT Advanced inverter welding system

  • Designed for wire spools with a maximum diameter of 300 mm
  • Wire feed by means of 4-roller drive for precise and smooth transport
  • Digitally controlled MIG/MAG welding power source
  • Designed for CMT (Cold Metal Transfer) welding processes
Nominal current 4 A
Operating voltage 55 V DC
Wire feed speed 0.5 - 22 m/min
Wire diameter 0.8 - 1.2 mm
Compatible wire spools All standards
Max. Shielding gas pressure 7 bar
Protection class IP 23

PLT Super MIG (combined plasma-MIG system)

  • Compatible with most robot controllers
  • Analog/digital BCD or bus coupling possible
  • Integrated Unitronic PLC
  • Large number of welding lists can be stored
  • Enables gas mixture adjustment
  • Integrated DC plasma power source
  • Water pump with storage tank for the torch cooling system
  • Patented SoftStart® ignition for the plasma pilot arc

Cloos GLC 553 MC3 R

Max. Open circuit voltage 70 V
Welding range MIG/MAG 40A/12V - 550A/44.5V
Duty cycle 100% 500A/39V
Duty cycle 60% 550A/41.5V
Wire feed (infinitely variable) 0...30 m/min
Protective fuse IP 23
Standard EN 60 974-1

EWM Picotig 200 AC

TIG E-hand
Welding current setting range 5 - 200 A 5 - 150 A
Duty cycle at 40°C
35% 200 A -
50% - 140 A
60% 150 A 130 A
100% 120 A 110 A
Open circuit voltage

43 V
Mains frequency 50/60 Hz
Mains fuse 1 x 16 A
cos φ 0,99
Efficiency 0,85
Protection class IP 23
Standards IEC 60 974-1; -3; -10/S mark/EMC class A

EWM Tetrix 552

Adjustable welding current 5 - 550 A
Duty cycle at 25°C
60% 550 A
80% 520 A
100% 450 A
Max. Connected load 22.2 kVA
cos φ 0,99
Efficiency 0,9