FlexKraft™ Marine

DC power supply designed for life at sea.

When you’re at sea — we won’t let you down!

It’s simple. You are at sea. There is no repair shop around the corner. In order to treat your ballast water, you must have a reliable power supply. These processes simply must work, no matter what. Our systems and solutions are built and adapted to cope under these harsh conditions and will always guarantee your power supply. We won’t leave you stranded.

Relax — we don’t get seasick.

The efficiency and reliability of our solutions have been proven for decades, and we have been chosen to supply both coast guards and submarines with rectifiers. Using reinforced and modified rectifiers we guarantee power supply even when the sea is at its roughest. And, no matter what coastline you approach, when your ballast water treatment gets it power supply from KraftPowercon, you can safely empty your ballast water without harming local flora and fauna.

Low cost and small footprint

The high reliability of our systems gives you a number of distinct advantages. The low power consumption means a small footprint and operating and maintenance costs are low. The latter is further fueled by the modular design of our rectifiers. They are designed to improve uptime, and should maintenance be required you can run your system on reduced power, preventing costly standstills and downtime. Putting it all together, our power supply significantly improves your business by helping you to a safe, speedy and efficient ballast water management.

Marine Classifications
Available Sizes FlexKraft™ Control Capability
DNV DNV Standard for certification No 2.4 Environmental Test Specification for instrumentation and automation
GL GL Rules & Guidelines VI-7-2 Section 3 edition 2003, Test Requirements for Electrical / Electronic Equipment and Systems
Lloyd’s Lloyds register type approval system, edition 2002

Specifications are subject to change without notice.



  • Remote control box ’basic version’ with analogue or digital display, potentiometers etc.
  • RS-232C interface for control of one power supply.
  • Analogue/Digital interface. Two controls, and two status signals 0–10 VDC and two controls and two status signals 24 VDC.
  • Standard configuration: Iset, Uset, lact and Uact: 0–10 VDC. On/Off, Block/Run, Power On and Alarm as digital signals: 24 VDC.
  • Analogue interface with four inputs and four outputs galvanically isolated. Control and status signals 0-10 VDC or 0/4–20 mA.
  • Standard configuration: Iset, Uset, lact and Uact: 4–20 mA
  • Digital interface with four inputs and four outputs. Control signals 24 VDC. Status signals via voltage free relay contacts; contact data 24 VDC or 24 VAC. Standard configuration: On/Off, Block/Run, Power On and Alarm.
  • Raise / Lower function.
  • Electrically controlled AC breaker.
  • External reference shunt, 60 mV.
  • Polarity Reversal.