Tecarc Ti 503 AC DC TIG Welder - Water Cooled

The Tecarc Ti 503 AC-DC TIG Welder gives exceptional welding performance with instant arc starting and super smooth welding from just 5 Amps / 0.5mm material. On DC TIG the arc is perfectly stable and near silent. AC TIG benefits with an advanced square wave design, this gives a substantial reduction in arc noise and provides an optimal stable arc condition. Furthermore the unique balance control allows complete output adjustment from DC negative through all AC combinations to DC positive. This allows extreme AC balances to be run to either optimise the heat to the job or optimise the cleaning effect for specialist metals. Variable AC frequency from 20-200Hz provides further potential to optimise the arc to suit your job. A low frequency AC frequency such as 20Hz gives a soft wide arc with minimal noise, ideal for heavier metals. At high AC frequency the arc constricts and can focus the heat more precisely, ideal for thinner precision welding jobs.

Variable pulsing functions provide further control over the output, low pulse frequency can be used to create the classic TIG 'stack of cards' appearance, high pulse frequency reduces heat input, ideal for difficult to weld thin metals. All AC-DC and pulse functions also work on MMA (stick) electrode welding. In addition, the high OCV (88V) combined with built in hot start lights up all rods fast including cellulosic types. 

Digital display shows set values and precise real time values. Optional calibration to BS IEC60974-14 with precision grade capability in standby these models are completely silent and draw almost zero power. Water cooling starts instantly when TIG welding and has a post run time depending on how long you're welding. Even when running audible noise is very low. A built in water flow switch is fitted to protect the torch in event of a flow problem.

Built using a rugged 2 IGBT power module technology and simple electronics - minimum parts and maximum reliability !  

Tecarc's reliability is the very best, no matter if you are welding all day or storing in a barn for years. Tecarc build all their own PCB's, transformers, coils and power assemblies etc. There are NO microprocessors or programable technology used, GUARANTEED no software to corrupt. From a serviceability point Tecarc machine are simple, no electronics degree needed so can be maintained by any competent technician anywhere in the world.

Key features

• Precision control of weld power from 5 Amps
• Instant arc starting on both TIG and MMA
• AC-DC infinite balance control - unique to Tecarc
• AC frequency control from 20 - 200Hz
• Advanced square wave output for optimised AC arc
• Soft low noise AC TIG thanks o advanced square wave
• MMA on both DC and AC with frequency and balance control
• MMA welding of all electrodes including cellulosic
• Digi display shows precise values before & during welding
• TIG 2T/4T torch trigger normal/latch function
• Slope up & down controls
• Gas pre/flow circuit built in & adjustable post/flow gas time
• Pulser  with variable current & extended frequency control
• Remote socket for foot pedal or other
• Generator friendly & compensation for cables up to 100m
• Protection from over/under input volts, over temp
• 20W standby power equals low running costs
• High duty cycle
• Rugged case on a 3mm chassis
• Cooling chamber keeps dirt away from controls
• Fan on demand
• Auto shut down if left energised on TIG
• Low noise water cooling - runs when only when needed