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Heavy Duty MMA / HF TIG Welders
‘T’ SERIESWeldman ‘T’ series inverter power sources are built-in high frequency start TIG and MMA welders capable of delivering constant current (CC) DC power. This is achieved using energy efficient IGBT inverter technology. These machines render smooth and stable arc for Stick / MMA welding with various types of electrodes. In TIG mode, various TIG features are available. The machines are designed and built with careful layout of power components and cooling arrangement. Hence, heavy duty welding at higher current is achieved.
PROCESSES
- Stick welding > Lift start TIG welding > HF start TIG welding > Pulse TIG welding (with optional modification kit and pulse TIG unit)
FEATURES
- Light weight, compact and yet reliable.
- Designed and built to operate under harshest environment and meets the requirement of quality welding in shipyards, pipelines, construction, petro-chemical plants, oil refinery, offshore works and workshop.
- Generator friendly (low kVA requirement).
- Ease of maintenance.
- Welder friendly controls.
- Digital display for easy current setting.
- Step-less current control.
- HF / LIFT / MMA selector switch for process selection.
- 2S / 4S / Fast Tack selector switch for Trigger hold and Quick tacking.
- Gas pre flow (for gas purging) and post flow (for cooling) time adjustment.
- Current up-slope (for soft start) and down-slope (for crater filling) time adjustment.
- Arc force adjustment to minimize the electrode sticking to the weld puddle (MMA mode).
- Built-in hot start for additional current during arc striking (can be adjusted by preset potentiometer in PCB) (MMA mode).
- HF auto cut-off for protection against accidental triggering.
- Tungsten tip saving circuit (when tungsten is shorted to work piece, only 10A current flows).
- MCB for fault protection and fuse for Control circuit protection.
Current limit, Under voltage and Overload protection.
OPTIONAL ITEMS (Require necessary modification in power source)
Remote Current / Volt control unit WER101
Remote Pulse TIG unit WERP100
| MODEL | WE301T | WE402T | WE430T |
| Input Supply Voltage | 415V + 10%, 3-Ph, 50/60Hz | ||
| Rated Input | 12.2kVA | 18.0kVA | 12.95kVA |
| Idling Input Current | 0.25A (Max.) | ||
| Maximum OCV (CC) | 82V DC | 75V DC | |
| Current Range (TIG) | 10A – 300A | 10A – 400A | 10A – 400A |
| Current Range (MMA) | 10A – 300A | 10A – 400A | 10A – 300A |
| Rated Duty cycle @ 70% (MMA) | 300A / 32V | 400A / 36V | 300A / 32V |
| Rated Duty cycle @ 70% (TIG) | – | – | 400A / 26V |
| Rated Duty cycle @ 100% (TIG) | 300A / 22V | 400A / 26V | 350A / 24V |
| Gas Pre Flow Time | 0.1sec – 3sec | 0.1sec – 10sec | |
| Gas Post Flow Time | 5sec – 60sec | 3sec – 30sec | |
| Current Up Slope Time | 0.1sec – 15sec | 0.1sec – 5sec | |
| Current Down Slope Time | 0.5sec – 15sec | 0.5sec – 15sec | |
| Dimension (L x W x H) | 500 x 260 x 500 mm | 490 x 260 x 450 mm | |
| Weight | 51.2kg | 31kg | |
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