High-Power Systems

Advanced systems need advanced power supplies. The SM15K series power supplies are highly valued for their excellent efficiency, stability, and reliability. While keeping its excellent performance characteristics, multiple SM15K units can be combined to get high performance with more power. Ranging up to 27000 A output current at a symmetric and bi-directional constant power curve.


Modular Power System

High-power systems can be configured up to 900 kW using the SM15K series with Master/slave interface cards and assembly kits. The advantage of this modular solution is its high flexibility, as systems can be assembled or disassembled in minutes. The master unit can be used to configure the entire setup via front, web interface, or Ethernet. This connectivity can be expanded at any time by our interface cards.


Power regeneration technology

Delta's innovative Power Regeneration Technology ensures maximum efficiency, returning full power back into the grid with an impressive efficiency rate, reaching 95%. This eliminates the need for expensive water-cooling systems, resulting in significant cost savings and a smaller carbon footprint. This enables highly efficient and compact test setups for battery, PV, and inverter applications.


Flexible Output

With a flexible constant power output characteristic, the SM15K series seamlessly adapts to varying voltage and current requirements. Its constant output power spans the range of three separate power supplies with a traditional rectangular VI-curve, offering unparalleled versatility and value to users.


Excellent Performance

Even as a system of multiple SM15K units delivering more power, the system maintains excellent dynamic load response, ensuring high stability and reliability in operation. Consult the data sheet of the SM15K series for more information. Equipped with advanced features such as Ethernet interface, built-in sequencer, PC control software, fine-tune settings, and sink mode, the SM15K series offers comprehensive functionality out of the box. Optional plug-and-play interfaces for master/slave operation, digital I/O, interfaces, or analog programming further enhance usability and customization options. See the data sheets of the SM15K series and Master/ Slave interface for more information.


The high power system as an extension to the SM15K series, extends our tradition of delivering power supplies with user high value, low electromagnetic interference, low audible noise, reliability, and efficiency, the SM15K series exemplifies these qualities while offering bi-directional power flow, flexible output, web interface, and plug-and-play interfaces. It stands as an indispensable tool for a wide range of applications, setting a new standard in power supply excellence.

High Power Systems
Unit Voltage Current VI-curve
SM70-CP-450 Master/Slave System at 60 units
0 - 70 V
-27000 - 27000 A
SM210-CP-150 Master/Slave System at 60 units
0 - 210 V
-9000 - 9000 A
SM500-CP-90 Master/Slave System at 60 units
0 - 500 V
-5400 - 5400 A
SM1000-CP-45 Master/Slave System at 60 units
0 - 1000 V
-2700 - 2700 A
SM1500-CP-30 Master/Slave System at 60 units
0 - 1500 V
-1800 - 1800 A


  • Bi-directional system with up to 900 kW symmetric source and sink
  • Easy Master/Slave parallel operation up to 60 units
  • High efficiency of more than 95% at full load
  • Output kits for parallel and series output configuration are offered
  • Power Regeneration Technology: in sink mode, the PSU returns the energy back into the grid
  • Flexible output provided by Constant Power characteristics
  • 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 overload and short circuit conditions


  • Multiple SM15K units behave as one power supply
  • Operation on a wide range of 3 phase AC input voltages
  • Master-Slave operation up to 900 kW
  • Interaction through display menus or web interface
  • Interfacing is extendable by using plug-and-play cards
  • EMC surpasses CE requirements: low emission and high immunity
  • Low audible noise: temperature controlled cooling fans
  • Parallel output operation up to 60 units for all unit types
  • Series output operation only for SM500-CP-90, up to 6 units


  • Specifications: See single SM15K unit
  • Recovery time: 2x the values of a single unit
  • Ripple and noise: values of a single unit
  • Programming speed: 2x the values of a single unit
  • Operating temperature: -20 to +50 ÂșC


  • Emission: EN 61326-1 (class B equipment, for use in domestic establishment)
  • Immunity: EN 61326-1 (equipment for use in industrial and domestic establishment)
  • Safety: EN 60950-1 / EN 61010-1
  • Protection class: IP20

Dimensions and weight

  • Width: 19 inch
  • Height: > 6 U
  • Depth: 591 mm
  • Weight: > 54 kg


Add-on interfaces to be added at any time

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Data sheets Type/Format Size
Data sheet SM15K series pdf 490.03 KB
Data sheet Interfaces SM15K series pdf 353.74 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 173.71 KB
Firmware update SM15K series zip 20.78 MB
3D drawings Type/Format Size
3D drawings SM15K series zip 17.84 MB
Compliance Type/Format Size
REACH pdf 195.25 KB
ROHS pdf 192.81 KB