WARPP INARC-400 I, Руководство пользователя

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6
5. Working Principle
Block Diagram
These power sources are used for various types of welding and they are based on IGBT inverter Technology. In
these types of machines input supply is first converted in to DC by a rectifier circuit. The rectified voltage is
then filtered and fed to an inverter section. This section will convert the DC to high frequency AC. In this case
it is 20 K Hz AC. This AC voltage is fed to a specially designed high frequency transformer which steps down
the voltage to acceptable welding voltage and increases the current to required level. The output of the
transformer is fed to a high frequency rectifier circuit which converters this AC to DC for various welding
applications.
In the case of machines having capability to deliver both and AC & DC outputs for welding, this DC is fed to
one more inverter circuit OR electronic polarity control circuit which converts this in to low frequency AC
output for Aluminum TIG application. In this case controls are provided for adjusting the AC frequency, AC
balance along with other regular controls.