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Power sources

Uhrhan & Schwill multiple-arc internal welding systems can be equipped with different power sources.

All power sources that are delivered with internal welding systems are Lincoln Electric power sources optimised for multiple-arc welding by Uhrhan & Schwill.

The following power sources are available:

The US-DC-1000 is a high-performance DC power source and perfect for submerged arc welding when high output power is required. Four power sources are switched in parallel to achieve a power range of up to 4000 A.

Stromquelle DC 1000 Your advantages at a glance:

  • high process safety
  • outstanding arc characteristics on constant voltage and constant current processes
  • high efficiency and lasting welding quality
  • data consistency for repetitive welding applications due to stable control design
  • consistent operation, even with line voltage changes of up to ± 10 % due to built-in line voltage compensation
  • easy access for maintenance activities due to removable side panels
  • manufactured accordig to DIN EN 60974-1
  • three-year manufacturer warranty on parts and labour
  • seven-year manufacturer warranty on the power rectifier
  • many years of practical experience, even in rough operating environment
power range: 150 – 1250 A
weight: 372 kg
dimensions
width x depth x height [mm]:
560 x 1000 x 780

The US-AC-1200 and US-AC-1500 are electronically-controlled AC power sources with transductor and perfect for submerged arc welding when high output power is required.

Stromquelle AC 1200 / AC 1500Your advantages at a glance:

  • outstanding arc characteristics
  • Scott connection for two AC welding heads operated in tandem
  • adjustment of output settings through Rheostat while welding or at idle
  • three output studs with overlapping ranges
  • consistent operation, even with line voltage changes of up to ± 10 % due to built-in line voltage compensation
  • extra long life for repetitive welding applications through solid state circuitry
  • easy access for maintenance activities due to removable side panels
  • UL listed

US-AC-1200

power range: 200 – 1250 A
weight: 720 kg
dimensions
width x depth x height [mm]:
580 x 1210 x 1460

US-AC-1500

power range: 240 – 1500 A
weight: 820 kg
dimensions
width x depth x height [mm]:
580 x 1210 x 1460

The Power Wave AC/DC 1000 is the first power source to introduce Waveform Control Technology® to submerged arc welding.
Variable frequency and amplitude AC, DC positive or DC negative output allows you to optimally control the deposition rate and penetration.

The phase angle between the arcs can as well be varied in the software during welding. This results in balanced multiple-arc welding and a reduction of arc blow.

Stromquelle AC/DC 1000Your advantages of this technology at a glance:

  • control of deposition rate and penetration
  • quick polarity switching
  • optimal arc control - as well separately for the individual electrodes
  • improved efficiency and reliability at low operating temperatures through patented Coaxial Transformer Technology®
  • remote process monitoring through ArcLink, Ethernet and DeviceNet
  • consistent operation, even with line voltage changes of up to ± 10 %
  • possible wave forms: DC+, DC-, sinus, square wave
power range: 200 – 1000 A
weight: 272 kg
dimensions
width x depth x height [mm]:
488 x 838 x 1110