NEW IN | Oxford TIGMaker AC DC Range

220E, 270E, 330E Portable models, dual voltage 230V/400V or 230/110V

Oxford welders are British made machines well known for their simple rugged build, high reliability with a long life span and excellent welding performance.

This machine is no exception. Based around the best features of some of the other Oxford machines, the TIGMaker range use a copper transformer & Mitsubishi PWM hybrid chopper technology to give infinite & precise electronic control of the output. Our chopper technology is a hybrid between inverter & transformer technology, it combines the best of both to give you the performance & efficiency of a good inverter based machine but with the ruggedness, reliability & lifespan of a conventional machine.

These machines weld as well as the very best German made inverters yet tolerate real world conditions such as grinding dust, moisture, knocks & drops & overvoltage spikes on the supply without any problem. The lifespan is therefore much better than European or American made inverters & without the big expensive repair bills associated with complex inverter machines!

Ideal for all applications, they are happy working outside in the rain, in the back of a van or in your workshop. Perfect for welding all types of metals, aluminium, aluminium alloys & castings, steel, stainless steel, hardox, duplex, copper, brass, titanium, etc.

Main features & functions:

  • Super smooth stable arc from 5 or 10 amps upwards on both AC & DC.
  • Variable AC frequency 25hz-200hz.
  • Extended AC balance control up to 95% neg through to 95% positive.
  • Instant arc starting every time you press the torch switch.
  • Electronic pulse HF (IT friendly so doesn’t affect your PC & phones etc).
  • Up slope & down slope controls for perfect weld starts & finishes.
  • Post flow gas control for contamination free finishes.
  • 2T standard torch trigger & 4T torch trigger latching.
  • MMA ARC welding function welds all rods including cellulosic 6010 etc.
  • MMA ARC welding with both DC & AC current.
  • Digi meter shows preset then precise A when welding for EN1090 etc.
  • Remote socket to accept foot control or torch amps control etc.
  • Very simple to set up & use, anyone can use it in seconds.
  • Built in automatic compensation for varying supply & long cables.
  • Dual voltage input 230/400V, connect to single phase or 3 phase supply.
  • Generator friendly design (even unstable generators are no problem).
  • Very efficient design to minimise power consumption.
  • Suitable for use inside or outside (site welding etc) (IP23S rating).

Green, low energy consumption gives you more welding for lower running costs, save up to £900 per year on electric against older type machines.

DC TIG performance
On DC TIG the high OCV guarantees instant arc starts & is perfectly smooth, stable & quiet right through from min to max power. The output power is set precisely on the amps knob & shows on the digi meter prior to actually welding, when welding the actual value is displayed on the meter. Slope in & out gives perfect starts & finishes to every weld. Variable gas post flow control ensures coverage of shielding gas for the weld pool & electrode at the finish.

AC TIG performance
On AC TIG the arc starts instantly & is perfectly smooth & stable even at minimum amps. The output power is set precisely on the amps knob & shows on the digi meter prior to actually welding, when welding the actual value is displayed on the meter. The extended AC balance control allows you to change the AC balance through an extended range & is a really useful feature. This can be set to any position from 95% negative for maximum heat into the weld pool right through to 95% positive for maximum cleaning effect. By running a high % of negative balance the heat input into the TIG torch is substantially reduced & the heat into the job increases significantly. This allows you tackle those thicker jobs like heavy castings etc & its extends the range of the electrode so you can even run a 3.2 electrode with an air cooled torch up to 300A short term. The balance control also allows you to change the output from AC to DC – or DC+ output (reverse polarity). The variable AC frequency controls the heat spread of the arc, at low frequency’s such as 25hz the arc is soft & has a wide spread, as the frequency is increased the arc constricts to give a more focused narrow spread of heat. Again the slope controls & post flow gas control give perfect starts & finishes to every weld.

MMA ARC welding performance
On MMA welding the high OCV & built in hot start gives perfect fast arc starts on all types of electrodes. The digital meter displays precise amps values. The arc is perfectly smooth & stable on all rods from 1mm upwards & DC or AC current can be used. In addition cellulosic type electrodes 6010 etc can also be run perfectly, most machines won’t touch these. Many AC DC TIG machines won’t weld AC MMA, for some welding applications AC current is needed, our OXFORD models do it so well & you will find the arc is far superior to the old oil cooled or air cooled transformer types. In addition the AC features like balance & frequency controls allow the arc characteristics to be changed to suit each job, for instance you can increase penetration or reduce penetration by changing the AC balance.

Technical specifications

  220E 270E 330E
Mains Supply voltage 400/230V or 230V/110V 400V / 230V 400V/230
Mains supply fuse ‘D’ rated 16A or 32A on 110V 16/A/32A 16-20A/32A
Minimum generator / transformer rating* 4KVA 5KVA 6.5KVA
Welding range (amps) 5-220 (on all input voltages) 10-270 10-330
Duty cycle 35% @ 220A 270A 330A
Duty cycle 60% @ 170A 210A 250A
Power source weight approx. 46kg 56kg 65kg

* minimum generator rating is for up to 75% output, for full range we suggest increase KVA rating by 40%

For all models:

Work lead (earth) 3M
Mains input lead 3M Rubber
Power source size approx?(mm)* 300W x 600L x 500H

*(excludes exterior hardware)

Compliance with with BS EN60974-1, BS EN 60974-10, RoHS, weee registered & CE marked.

All ratings above are based on TIG welding, when using on MMA duty cycles reduce by 15% & input power increases.

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  • Elmbridge News | NEW IN | Oxford TIGMaker AC DC Range

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