PIW 300MV – DC Arc Inverter Multi-Voltage Welding Machine:
The PIW 300MV is a versatile DC arc inverter welding machine designed to operate across multiple input voltages (220V to 440V, single or three-phase), making it highly adaptable for different job site power conditions.
It delivers dual output performance, producing up to 200A on 220V and up to 300A on 380–440V, allowing users to scale welding power depending on available supply.
Built with inverter technology, it offers stable arc control, efficient energy use, and reduced machine size compared to traditional welders. The machine operates at a 60% duty cycle, balancing power and thermal protection for consistent medium-to-heavy workloads.
Despite its capability, the unit remains relatively portable at around 15 kg, making it suitable for both workshop and field applications. Its Class F insulation and durable design ensure reliability under demanding conditions.
Best suited for:
• Sites with unstable or varying power supply
• Medium to heavy fabrication work
• Maintenance, installation, and construction welding
PIW 400VRD-MV – DC Arc Inverter Multi-Voltage Welding Machine with VRD:
The PIW 400VRD-MV is a high-capacity DC arc inverter welding machine engineered for heavy-duty industrial welding, featuring multi-voltage capability for flexible operation across different power inputs.
A key feature of this model is the VRD (Voltage Reduction Device), which automatically lowers the open-circuit voltage when not welding. This significantly improves operator safety, especially in humid or high-risk environments.
With a welding output typically reaching up to 400A, this machine is designed to handle thick materials and continuous high-load applications. It supports larger electrodes and maintains strong arc stability even under demanding conditions.
Like other inverter-based systems, it provides efficient power conversion, stable arc characteristics, and reduced energy consumption. However, due to its higher output, it is generally heavier and more suited for fixed or semi-mobile industrial setups.
Best suited for:
• Heavy fabrication and structural steel welding
• Industrial plants and construction projects
• High-safety environments requiring VRD protection
