SuperTIG 250EX
Pulse TIG with the adjustment range professionals expect.
The SuperTIG 250EX is the most popular Granhult AC/DC TIG. It welds at the full 250 A with a 60 % duty cycle, pulse covers 0.5–250 Hz, and every phase of the weld from pre-flow to post-flow is adjustable. 32-bit control and IGBT power modules keep the arc stable across the whole range.
The wide current range makes the same machine suitable for 1 mm stainless and heavy aluminium alike. Pulse on-time (10–90 %) and background current (5–95 %) are set separately, which reduces heat input and distortion on thin parts.
In stick mode Arc Force regulates automatically. The duty cycle is 200 A @ 100 %, so ordinary TIG work does not stop for thermal cut-outs.
For continuous welding above 180 A a water-cooled torch and the ICE cooling unit are recommended.
Technical data
Electrical
| Input voltage | 400 V, 3-phase |
|---|---|
| Fuse | 16 A |
TIG
| TIG output | DC 5–250 A · AC 20–250 A |
|---|---|
| TIG duty cycle (40 °C) | 250 A / 20 V @ 60 % · 200 A / 18 V @ 100 % |
Stick (MMA)
| Stick output | 5–200 A · 20.2–28 V |
|---|---|
| Stick duty cycle (40 °C) | 200 A @ 35 % · 160 A @ 60 % · 130 A @ 100 % |
| Arc force | automatic |
Controls
| Pulse frequency | 0.5–250 Hz |
|---|---|
| Pulse on-time | 10–90 % |
| Pulse background current | 5–95 % |
| AC frequency | 20–250 Hz |
| AC balance | 10–90 % |
| Upslope | 0–10 s |
| Downslope | 0–25 s |
| Pre-flow | 0–10 s |
| Post-flow | 0–25 s |
| Arc start | HF |
| Torch trigger | 2T / 4T |
Build
| Efficiency | ≥ 83 % |
|---|---|
| Enclosure rating | IP21S |
| Dimensions (L × W × H) | 470 × 235 × 435 mm |
| Warranty | 24 months, including professional use |
Compatible accessories
ICE water cooling unit 10 l
Water cooling for TIG and MIG torches up to 300 A. Brass pump, 10 l tank, 150–1500 W cooling, 230 V.
Tuontitukku.fi ↗
PedalPRO foot pedal, 7-pin
Control current with your foot while welding. Fits e.g. SuperTIG 200EX and 250EX.
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TIG torch WP-26, water-cooled, 4 m
250 A water-cooled torch with 7-pin connector.
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TIG torch consumables kit, 18 pcs
Collets, collet bodies and cups for WP-17/18/26 torches.
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