With thousands of world-wide installations, CAPAC® impressed current cathodic protection (ICCP) systems are the long-term solution for preventing electrolysis and galvanic corrosion from attacking submerged surfaces.

CAPAC systems have long been recognized as the superior alternative to other cathodic protection systems, which require frequent replacement and experience increased fuel and maintenance costs. The system consists of anodes, reference electrodes, shaft grounds and power supply/controllers. It delivers a controlled amount of DC current to submerged surfaces to prevent the electrochemical action of galvanic corrosion. 

CAPAC systems are approved by all classification societies for all types of vessels and are the ultimate solution for protecting the hulls of naval and commercial ships, ferries and workboats, as well as small boats and luxury yachts.

The benefits of an automatic CAPAC System are clear when compared to traditional sacrificial-type systems:

The CAPAC® system power supply controller (PSC) is an automatic controller with a high frequency switch mode DC power supply in a wall-mounted enclosure with a touch screen for intuitive, state-of-the-art user operation.

The touch screen displays operating parameters, including total anode current and hull potential, system set point, data trending, system self-diagnostics and system condition assessment for reporting “Normal”, “Over” and “Under” hull protection conditions. A dry contact for alarm annunciation to a remote alarm indicator is also included. The PSC also provides a manual override capability and 0% leakage current.

Zone-to-zone communication control is available via ethernet connection. Communication to the ship’s systems is available via a RS485 connection. System parameter history is accessible through data logs stored in an easily retrievable USB thumb drive.  

CAPAC® system power supply controller (PSC)

PSC features 

  • Compact design, easy to read, intuitive color.
  • Human Machine Interface (HMI) display. 
  • Configurable up to three zones for ease of control from a central location.
  • Data logging for record of system operation eliminates the need for anual record keeping. 
  • Trending screens for system monitoring allows for centralized real-time monitoring of the system. 
  • Remote alarm annunciation from a central control room on board. 
  • Automatic operation with manual mode for troubleshooting. 

Xylem has been a trusted supplier of CAPAC systems to naval forces around the world for over 70 years.

Capac system features:

  • Simple operation through automatically controlled equipment ensures reliable operation. 
  • Anodes, reference cells and control systems maintain just the right amount of protection for underwater hulls.

Capac system benefits

  • Only one installation required for the life of the vessel.
  • Increases life of rudders, shafts, struts and propellers.
  • Decreases drydock maintenance.
  • Reduces operational costs. 
  • Reduces fuel consumption.

Applications

  • Naval vessels
  • Commercial vessels
  • Cruise ships
  • Ferries
  • Work boats
  • Yachts and small crafts
  • Structures

When it comes to safeguarding your vessel against corrosion, CAPAC® ICCP systems deliver unmatched performance, efficiency, and peace of mind. With proven reliability across thousands of installations worldwide and advanced features like intuitive monitoring and automated control, CAPAC® sets the standard for hull protection. Discover how our technology can extend the life of your fleet and reduce maintenance costs—visit Xylem’s CAPAC® page or contact us today to learn more.

Watch our video to learn more about how Xylem’s superior technology can help keep you moving:

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