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Welding Transformers

THH 400 / THH 630

The THH 400 and Thh 630 are manual welding transformer for industrial use with coated electrodes. Featuring high capacity and excellent welding properties. The high open circuit voltage ensures easy striking and re-striking action. Due to the high permitted loads, this transformer is ideal for Fematic welding. It confirms to IEC 974-1

Special Features

  • Step less current control within Single from front panel.
  • Phase compensation facility optional. It's a good investment as the primary current and rated output can be reduced, resulting in reduced fuse size and cable diameter.
  • Provided with wheels and handle for easy mobility.
  • Study design for all working environments.
  • Horizontal shunt core travel ensures precise setting after prolonged use.
  • Class 'H' insulation provides longer coil life.
  • Multi voltage input supply.

Technical Specifications :

Technical Data
  THH 400 THH 630
Input Supply 230/415/500 VAC 50Hz
2 lines of Three Phase
220/440 VAC, 60 Hz,
2 lines of Three Phase
 
 
 
Welding Current Range   70 A/23 V 90 A/24 V
    400 A/36 V 630 A/44 V
Open Circuit Voltage 50 Hz 73 - 80 V 70 - 80 V
Permitted Load at 100% duty Cycle 240 A/30 V 380 A/35 V
  at 60% duty Cycle 315 A/33 V 500 A/40 V
  at 35% duty Cycle 400 A/36 V 630 A/44 V
Power factor at 150 A with Capacitors 0.7 0.7
  without Capacitors 0.4 0.4
Efficiency 50 Hz 0.82 0.85
  60 Hz 0.83 0.83
Open Circuit Rating   0.6 KW 0.7 KW
Weight   195 Kg 210 Kg
Protection Form   IP 23 IP 23
Cooling   AN AF
Width   700 mm 675 mm
Depth   820 mm 820 mm
Height with Handle   950 mm 1050 mm