High-power, high-voltage DC/DC converter combined with DC/AC inverter, Zekatex

The combined AC/DC/AC converter is a cabinet mountable device for multi-purpose applications. Providing various modes of operation, programmable limitations and additional logic integration possibilities, it can easily turn into the heart of your power solution. It consists of the following components:

  • 3 x DC/DC Converters that can work independently or can be combined into one for higher current rate
  • 1 x 3-phase DC/AC Inverter
  • 1 x 3-phase Diode Bridge Rectifier
  • 2 x Choppers (one of them for internal protection)

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 Modbus-to-PROFIBUS Gateway. The integrated Modbus master allows different Modbus slaves to be attached to extend IO and functionality.

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, ordered separately), 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.

Having a design with fully integrated control, power units and filter bank balances the size and the weight of the installed components. Mounting and servicing of these usually heavy components within the cabinet becomes a much more comprehensive task.

This combined AC/DC/AC converter can easily fit in systems such as UPS, transformer pre-magnetization, battery charging and many other multi-functional applications. It has already been integrated in some very complex Megawatt power plants like the latest Transocean drillships of type Ultradeep Water including the ones with the first hybrid drill-floor in the world.




Diode Bridge Rectifier nominal current

25 A rms

DC/DC: Minimum input voltage

89 Vdc

DC/DC: Maximum input voltage

150 Vdc

DC/DC: Nominal current

20 Adc

DC/DC: Maximum current (95Vdc input voltage)

40 Adc (for 20s)

DC/AC: Nominal output voltage

480 Vac

DC/AC: Maximum output current

38 Aac (cos phi = 0.15, for 20s )

DC/AC: Maximum active power

20 kW

DC/AC: Nominal output current

30 Aac

DC/AC: Frequency range

1 - 70 Hz

Internal protection Brake chopper: Maximum energy  

2000 J

External Break chopper: Nominal current



~ 93 %

Mechanical Dimensions (W x L x H)

365 x 470 x 180 mm


35 kg


Forced air – internal fans, monitored

Degree of protection



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