TRaNSFORMER RECTIFIER UNITS

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TRUs convert AC power from the mains supply into low-voltage DC output, which is then used to provide impressed current cathodic protection (ICCP). This makes a protected structure (like a pipeline, storage tank, or marine vessel) the cathode in an electrochemical cell, preventing corrosion by directing the oxidation reaction to sacrificial or inert anodes instead. Oil, gas, and water pipelines ar