Can a cathodic-protection rectifier's DC output rating be used as its AC wind-power demand?

Small wind / Buyer questions

Application integration

Can a cathodic-protection rectifier's DC output rating be used as its AC wind-power demand?

The short answer

No. The rectifier's DC output and AC input are different electrical boundaries. Its output rating also describes capability rather than the actual protection demand at every time. Obtain the selected equipment's input evidence and the cathodic-protection specialist's required service. Do not convert a DC ampere rating into AC watts using an assumed site voltage.

State the actual protection arrangement

Confirm that the project uses an impressed-current system and identify the powered equipment. MATCOR describes AC-to-DC rectifiers for that service. Other corrosion-protection arrangements can differ. Record actual DC voltage/current conditions and the upstream meter position, while leaving protection criteria, operating levels and monitoring acceptance to the qualified corrosion specialist.

Reconcile power at a defined condition

Hypothetically, a rectifier delivering 100 W DC and drawing 125 W AC has 25 W difference at that simplified steady boundary. The invented values do not imply a typical efficiency or required protection output. Actual input can change with the operating point and auxiliary demand. A maximum DC rating is not evidence that the site consumes that amount continuously.

Keep the rectifier's output capability separate from the specialist's required operating point. Oversized DC capability can support future adjustment without implying that the present asset continuously consumes that maximum input.

Preserve the specialist-defined service

Ask which supply interruptions and recovery conditions are acceptable for the actual protected asset. Do not make output follow wind or change protection settings merely to maximize renewable consumption. Include required controls and monitoring in the input boundary, without adding them twice if already metered. Send the supported electrical profile, continuity requirement and proposed connection with the RFQ. Wind can contribute energy to an accepted arrangement, but turbine capacity does not establish corrosion protection, a safe interruption duration or MARSTON compatibility with a third-party protection rectifier.

Sources

Examples are illustrative. Confirm product-specific performance, compatibility and supply scope in the applicable documents.