High-power high-voltage 200kW 10V to 750V 400A bi-directional air-cooled DC/DC converter RedPrime from Zekalabs

The unit is a bidirectional 200kW / 750V wall or cabinet mountable DC-DC power converter.

As a combined buck/boost air-cooled converter, it can be set up in either charging or discharging mode. Moreover, the units can be stacked for achieving higher power with no communication between them (optional).

Providing various modes of operation, programmable limitations and additional logic integration possibilities, it can easily turn into the heart of your energy conversion system.

Having a design with fully integrated control and power units and external filter bank balances the size and the weight of the installed components. You can use your own inductors or combine the converter with the Zekalabs DC/DC filter bank providing maximum efficiency and robustness for your system. Moreover, mounting and servicing of these usually heavy components within the cabinet becomes a much more comprehensive task.

Having numerous communication interfaces including Ethernet, RS485 and CANBus and utilizing Modbus, makes the integration with your industrial network an easy task. Profibus interface is also available using a Zekalabs Communication Bridge (optional).

Several digital and analog inputs and outputs are available for additional programming and logic allowing extra flexibility during the system design or an ongoing project.

Using the ZekaTrace™ and ZekaStream™ technology (optional), you will be able to display the electrical characteristics and diagnose the health of the system with an unprecedented resolution for the industry. Only one such converter in your design is enough to change the way you commission the whole power plant.


This versatile, multi-application device provides various modes of operation, programmable limitations and additional logic integration possibilities and it can easily be used into the following applications:

  • energy storage applications
  • microgrids and smart-grid installations
  • battery / fuel-cells / supercaps charging and discharging
  • load balancing and peak shaving
  • hybrid/electrical propulsion
  • charging stations and charging infrastructure
  • coupling DC buses at different voltage levels
  • cranes and hoist applications
  • mining conveyor belts
  • data centers
  • UPS and custom battery chargers

Technical data

Nominal power200 kW
Minimum low-voltage side voltage10 Vdc
Maximum low-voltage side voltage700 Vdc
Maximum low-voltage side current400 Adc
Minimum high-voltage side voltage60 Vdc
Maximum high-voltage side voltage750 Vdc
Maximum high-voltage side current300 Adc
Efficiency~ 98 %
Energy transfer directionBidirectional
Working in parallelOptional
CoolingForced air - internal fans
Power supply voltage24 Vdc ±10%
Mechanical dimensions (W x L x H)366 x 465 x 240 mm
Weight30 kg
Communication interfacesMODBUS RTU over RS485
CAN (custom protocol)
PROFIBUS (requires protocol converter)

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