Taurus MIG-250TD, Operation Manual, Page: 14 / 32

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Working Principle
1.
Diagram Explaining Working Principle
1.1. A bridge rectifier converts AC to DC;
1.2. After secondary rectification and reactor filtering, output welding current is
delivered that meets the welding requirements;
1.3. Controlled by PWM the IGBT inverts the DC to 20KHz AC which is
transmitted via a high-frequency transformer;
1.4. The in-time protection circuit provides signals to the PWM warning for
overheat and over-current situations;
1.5. A closed-loop control system ensures a good anti-grid fluctuation ability and
an excellent cutting performance..
Installation and Wiring
1. Location Requirements
1.1. The machine should not be installed in an area where it is exposed to direct
sunlight or rain but where the humidity is as low as possible and the ambient
temperature is within the range of -10°C - 40°C.
1.2. The machine should be installed on a flat, preferable level surface but, in
any case not on a surface with an inclination of more than 10 °.
1.3. The machine should not be operated in a work station exposed to wind.
Should a windy environment be unavoidable, suitable screening should be
installed.
1.4. In order to allow for efficient ventilation, a clear space of at least 20cm
should be allowed in front of and behind the machine as well as at least
10cm at each side.