Sigma Weld is completely designed and developed at our R n D center in Mumbai, India. We have

a strong RnD team to meet any specific requirements of our customers. Our technical support

team is well trained and equipped to support the service needs of our customers to maintain the

least down time.

Sigma Weld Welding Inverter Technology offers the following benefits :

1. Easier to Learn: Inbuilt features like Anti-Sticking, Adaptive Hot Start and Adaptive

Arc Force Control make Sigma Weld welding inverters most suitable for learners and

professionals alike. Adaptive features allow the operator to weld with a lot of ease and

control.

2. Easier to Weld: Advances feedback systems allow greater control over the welding

current. Sigma Weld welding inverters are CC (Constant Current) systems for MMA and

TIG applications and CC/CV (Constant Current/ Constant Voltage) for MIG and MAG

applications. This allows operators to achieve good quality weld joints with more ease ,

less skill and Spatterless Welding.

3. Energy Efficient: Sigma Weld are sophisticated IGBT based welding inverters which

consume 60% less energy compared to conventional transformer systems and

33% less energy compared to conventional rectifier systems. Another major

advantage is that the no load current is 0.2A compared to 2.1A in Welding Rectifiers and

8.0A in Welding Transformers. The more you use Sigma Weld the faster you recover

your investment.

4. Robust and Versatile: Sigma Weld can weld with all types of welding electrodes

including 6010(Cellulosic Electrode), 6013, 7018(Low Hydrogen) and SS 308.

Sigma Weld can work with cable lengths upto 50 meters.

5. Safety and Reliability: Inbuilt protections for IGBT Over Current, IGBT Short Circuit

Current, Welding Over Current, Thermal Overload and Prolonged Output Short ensure

longer working life for the equipment. Inbuilt VRD (Voltage Reduction Device) enable LOW

OCV when the inverter is not under use. This feature ensures safe working conditions for

the operators.

6. Portable and User Friendly: SigmaWeld are 70% lighter than equivalent Welding

Transformer or Rectifiers. They have a small footprint and have wheels for added

mobility. The user-friendly interface includes a Digital Display for setting weld current and

Ammeter for displaying welding current. Welding current can be set in increments of 1A

and each process has a memory recall so the operator has one touch process change

over.

7. Advanced Micro Controller Technology: Enables Sigma Weld to have reliable,

repeatable Up Slope, Down Slope and Pulsing capabilities for TIG welding with Lift Arc or

with High Frequency Initiation.

Environment Friendly: Sigma Weld Welding inverters helps reduce consumption of natural

resources like non-ferrous metals copper and aluminum which are to basics for Transformer and

Diode based Welding Systems. Any given 400A welding transformer would have minimum of

50kgs of copper / aluminium winding with a total weight of the System around 200Kgs. Sigma

Weld 400MT is only 45Kg in total system using transformers and chokes with a collective of less

than 5Kgs.

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