Sealey tigmma inverter welders 160 200a 230v sealey tig200s a 200a inverter welder from sealey which is lightweight powerful and incredibly versatile offering many advantages over traditional transformer type welders inverters use high quality state of the art technology for the perfect weld producing up to 200a at 40 duty cycle whereas a conventional 200a welder would have a duty cycle of around 10 fan cooled dc power supply for tig and arc welding applications suitable for welding