Bi-directional constant power

The SM15K Series consists of power supplies with excellent efficiency, stability and flexibility. Thanks to the constant power output, one power supply can cover up to five ranges of traditional power supplies with a rectangular VI-curve.

Standard, the SM15K series can be controlled via the front, web interface or Ethernet. This connectivity can be expanded at any time by our interface cards. Furthermore, the Master/slave interface allows parallel operation of up to 60 units to create high power systems that can supply up to 27000 A. More about those high power systems can be found here.


Bi-directional operation

The SM15K series is standard equipped with regeneration technology: Next to supplying the DUT with power, a SM15K power supply allows the DUT to deliver full power back to the grid. This enables highly efficient and compact test setups for battery, PV and inverter applications.


Unit Voltage Current VI-curve
0 - 70 V
-450 - 450 A
0 - 210 V
-150 - 150 A
0 - 500 V
-90 - 90 A
0 - 1500 V
-30 - 30 A


  • Flexible output provided by constant power characteristics
  • Excellent dynamic response to load changes 
  • EMC surpasses CE requirements: low emission and high immunity
  • Designed for long life at full power
  • Protected against all overload and short circuit conditions
  • Low audible noise due to temperature controlled cooling fans
  • Power Regeneration Technology
  • Modular Master/Slave with use of interface card and output assembly kit
  • All-digital control to adapt regulation to load type
  • Automatic coarse and fine adjusting buttons


  • Symmetrically providing and sinking 15 kW of power
  • Operation on a wide range of 3 phase AC input voltages
  • Efficient power conversion, at least 95 % efficiency at full power
  • Master-Slave mode operation with up to 60 units and 900 kW output power
  • Configuration and use via menu-driven display and web interface


  • Input voltage (3 phase): 342-528 VAC (48-62 Hz)
  • Active Power Factor Correction (PFC): up to 0.996 (at 100% load)
  • Efficiency (sink & source mode): up to 96% (at full load)
  • Output ripple and spikes: from 10 mVRMS / 55 mVPP
  • Regulation: from 2 mV (0-100% load step)
  • Recovery time: from 100 µs (50-100% load step)
  • Programming speed: from 1.5 ms (10-90%)
  • Output voltage and current stability: 50.10-6 / 80.10-6
  • MTBF: 500 000 hrs
  • Operating ambient temperature: -20 to +50 ºC


  • Emission: EN 61326-1 (class B equipment, for use in domestic establishment)
  • Immunity: EN 61326-1 (for use in industrial and domestic establishment)
  • Safety: EN 60950-1 / EN 61010-1
  • Insulation input / output: 3750 VRMS (1 min.)
  • Protection class: IP20

Dimensions and weight

  • Width: 19 inch
  • Height: 3 U
  • Depth: 591 mm
  • Weight: 27 kg


Add-on interfaces to be added at any time

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Data sheets Type/Format Size
Data sheet SM15K series pdf 498.49 KB
Data sheet Interfaces SM15K series pdf 352.36 KB
Software Type/Format Size
DE Applications bundle description pdf 104.29 KB
DE Applications zip 417.72 MB
Example Code and Software zip 168.81 KB
Firmware Type/Format Size
Release notes firmware update SM15K series pdf 159.66 KB
Firmware update SM15K series zip 20.77 MB
3D drawings Type/Format Size
3D drawings SM15K series zip 3.98 MB
Compliance Type/Format Size
REACH pdf 122.77 KB
ROHS pdf 121.96 KB