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


  • Bi-directional power supply with 15 kW source and sink
  • Flexible output provided by Constant Power characteristics
  • Power Regeneration Technology: in sink mode, the PSU returns the energy back into the grid
  • Easy Master/Slave parallel operation up to 60 units
  • High efficiency of more than 95% at full load. No need for expensive cooling systems
  • Excellent dynamic response to load changes 
  • Including all-digital control to adapt regulation to match load type
  • Designed for long life at full power
  • Protected against all overload and short circuit conditions


  • Operation on a wide range of 3 phase AC input voltages
  • Master-Slave operation up to 900 kW
  • Large user display, menu-driven operation
  • EMC surpasses CE requirements: low emission and high immunity
  • Low audible noise: temperature controlled cooling fans


  • 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

Order codes

Order codes for combinations and accessories


To ordercodes


Find a distributor in your region


To distributors


Data sheets Type/Format Size
Datasheet SM15K series pdf 525.97 KB
Datasheet interfaces SM15K series pdf 408.39 KB
Software Type/Format Size
DE Applications zip 417.72 MB
DE Applications bundle description pdf 104.29 KB
Example Code and Software zip 168.81 KB
Firmware Type/Format Size
Release notes firmware update SM15K series pdf 67.3 KB
Firmware update P0160 SM15K series zip 24.05 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