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Welders – Double Cabinet Design
Welders – Double Cabinet Design
EFD Induction Limited offers high-output solid-state WELDERS – Double Cabinet Design, Model Weldac 2000. Less power consumption, a smaller footprint and easier operation are three hallmarks of the latest generation of Weldac systems. These features, coupled with the reliability of IGBT transistors, translate into: EFD’s patented switching pattern lets Weldac use rugged IGBT transistors. These transistors are virtually short-circuit proof, considerably boosting Weldac’s reliability. Continuous electronic load matching secures full power output across a wide range of tube sizes, ensuring maximum welding speed for each size. No operator action is needed, simply change the coil size. Weldac’s efficiency from input at the rectifier to output at the coil is 85-87%. Cooling water consumption is low, with no need for expensive de-ionised water. Weldac eliminates the need for costly reactive power compensation capacitors by using diode rectifiers that result in a high, constant power factor (0.95) at all power levels. Modular design with independent full-bridge IGBT inverters makes Weldac compact, saving valuable floor space and simplifying in-line integration and retrofitting. The high-power Weldac is housed in a two-cabinet design. Weldac features a diode rectifier with a constant power factor of 0.95 at all power levels. There is no reactive power cost, and no need for compensating capacitors. Patented driver technology lets Weldac use standard reliable IGBT transistors for better uptime and output. Automatic load matching ensures full output power across a wide range of tube sizes. There are no ‘unsafe’ operating areas. When a different-sized coil is fitted, Weldac automatically matches to the best setting. Weldac’s low ripple results in a clean weld bead-making it ideal for stainless steel and aluminium welding. IGBT transistors, together with an advanced switching pattern and intermediate transformer design, make Weldac short circuit resistant.