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Firmware update SM15K 

Version SM15000_H0_P0150Logo_Firmware Update



Delta Elektronika offers firmware updates free of charge for all users of Delta Power Supplies.

This is part of our excellent service! 


Now available is the latest firmware update for the SM15K series:

version SM15000_H0_P0150.



How to update your SM15K?

Go to the product manual and follow the instructions at page 6, chapter 3.2.


Product manual SM15K



Need to upgrade first?

Attention! Check if the current firmware version is P0109 or older. If so, download the

upgrade first. After upgrading from P0109 to P0119 you can proceed with the P0150 update.





Download firmware update

Download the latest firmware version for the SM15K directly by clicking on below link. The previous version was SM15000_H0_P0143.


P0150 full installation version



Release note

For an overview of all changes, download the firmware release note.


Release note








Firmware update SM3300 

Version SM3300_H0_P0160

Logo_Firmware Update


Delta Elektronika offers firmware updates free of charge for all users of Delta Power Supplies.

This is part of our excellent service! 


Now available is the latest firmware update for the SM3300 series:

version SM3300_H0_P0160.



How to update your SM3300?

Go to the product manual and follow the instructions at page 3-2, point 2.


Product manual SM3300



Download firmware update

Download the latest firmware version for the SM3300 directly by clicking on below link.


Firmware update P0160



Release note

For an overview of all changes, download the firmware release note.


Release note









Release SM210-CP-150SM210-CP-150_Angle 




We are happy to send you the release of the newest member to the SM15K family. The

SM210-CP-150 is now available from stock! Having the SM210-CP-150 in our range 

adds more flexibility in the choice of power supplies.



Output range

Adjustable from zero for both voltage and current;

    •  210V, +71.5A , -71.5A
    • 150V, +100A, -100A
    • 100V, +150A, -150A

SM210-CP-150 Constant Power curve




Master Slave operation

Master Slave operation up to 20 power supplies. Best is to contact us for higher numbers.

The SM210-CP-150 cannot be operated in series.



Master Slave parallel connection sets

Master Slave PAR set

The connection sets for Master/Slave set-ups using the M/S PAR SET C2 to C12. Download

below application notes for instructions:

Application note Master/Slave parallel operation SM210-CP-150



Sink current

The power supply requires only a few volts to start sinking.

    • 3.0V , -150A
    • 1.5V , -75A
    • 1.5V , 15A



Firmware update


A new firmware update (P0140) for the SM15K series is now available as a download on our

website. The free update includes a PV Simulation for Master/Slave too. This is up to 900kW.

See the video from one of our tests:

Video PV Simulation 











High Power System Application


Image_High Power System 

The master/slave control enables programming as if it's just one big power supply system;

no need to program each supply individually.


The Master/Slave interface connects SM15K power supplies and can therefore obtain a total

output current or voltage greater than a single power supply. This interface can connect up

to 60 units in parallel operation and reach up to 900 kW! It can do this while keeping the

specifications almost equivalent to using one power supply: for instance a recovery time

of only 250 uSec!



Data sheet

Download below the data sheet of the Master/Slave interface for the SM15K series.


Data sheet



Product manual

If you would like to know how to install and use the Master/Slave interface, download our

product manual.


Product manual



Application notes M/S operation

Download below the application notes for Master/Slave parallel or series operation for the

SM15K series.


Application note (for SM70-CP-450 in M/S parallel operation)


Application note (for SM210-CP-150 in M/S parallel operation)


Application note (for SM500-CP-90 and SM1500-CP-30 in M/S parallel operation)


Application note (for SM500-CP-90 in M/S series operation)




IN ACTION — 135 kW High Power System


Silverwing, a group of 40 students at the Technical University, are making a single personImage Silverwing video

electric aircraft. In their testing of this electric aircraft they need an enormous amount of power.

To reach the full power of the aircraft Silverwing used a High Power Supply System sponsored

by us, Delta Elektronika: a stack of 9 units of our power supply model SM1500-CP-30

configured as one big power supply!



    • Application: Testing single person electric aircraft


    • High Power System: 9 units SM1500-CP-30 in master/slave parallel operation


    • Total power: 135 kW




Would you like to see the application 'in action'? Please watch the video.  













Watch video



More Delta Power


With the new SM70-CP-450SM500-CP-90, SM210-CP-150 and SM1500-CP-30 we have

extended our offering to a higher power level: from 6kW maximum per supply to 15kW. 

Increased power without compromising either specifications or lifespan is what the

SM15K units offer. A breakthrough in power electronics technology has enabled us to

engineer features that customers demanded but were previously impossible while maintaining

very competitive prices.

Several new features are introduced in the SM15K series compared to our current power

supply series. One is already implied in the unit name: CP is short for Constant Power! The

constant power characteristic is not new, but along with a bi-directional power flow it is! Here

are the most striking features.



Flex output for better value

Icon_Flex Output: Constant Power 

The constant output power covers the output range of five separate power supplies with a

traditional rectangular VI-curve. For example:



  70 Volts @ +214 Amps              70 Volts @ -214 Amps

  60 Volts @ +250 Amps              60 Volts @ -250 Amps

  50 Volts @ +300 Amps              50 Volts @ -300 Amps

  40 Volts @ +375 Amps              40 Volts @ -375 Amps

  33 Volts @ +450 Amps              33 Volts @ -450 Amps



  210 Volts @ +71 Amps             210 Volts @ -71 Amps
  200 Volts @ +75 Amps             200 Volts @ -75 Amps
  150 Volts @ +100 Amps           150 Volts @ -100 Amps

  125 Volts @ +120 Amps           125 Volts @ -120 Amps

  100 Volts @ +150 Amps           100 Volts @ -150 Amps



  500 Volts @ +30 Amps             500 Volts @ -30 Amps
  375 Volts @ +40 Amps             375 Volts @ -40 Amps
  300 Volts @ +50 Amps             300 Volts @ -50 Amps

  250 Volts @ +60 Amps             250 Volts @ -60 Amps

  167 Volts @ +90 Amps             167 Volts @ -90 Amps



1500 Volts @ +10 Amps            1500 Volts @ -10 Amps

1000 Volts @ +15 Amps            1000 Volts @ -15 Amps

  750 Volts @ +20 Amps              750 Volts @ -20 Amps

  600 Volts @ +25 Amps              600 Volts @ -25 Amps

  500 Volts @ +30 Amps              500 Volts @ -30 Amps



Choosing the best output range is much easier now and offers users far better value for money.



Bi-directional power flow

Icon_Bi-directional Power Flow 

Bi-directional power means the same constant power characteristic in the second quadrant for

the full 15 kW. It operates like an electronic load too: previously Delta’s power supplies would

be equipped with an optional power sink capable of absorbing up to 10% of the total energy

which was dissipated via internal heat sinks.


Now, the power sink is standard and can sink up to 100% of the power without the need for

dissipating lots of energy.



Power Recovery [Regeneration] Technology


With the new Power Recovery [Regeneration] Technology Delta returns full power back into the

grid and the efficiency of 95% avoids the need for expensive water cooling. Compared to

traditional electronic loads – where dissipation is 100% – there is a power loss of just 5%.

Rooms will be cooler, costs for air conditioning systems will drop significantly and overall, the

SM15K units contribute to a smaller carbon footprint.



Extremely good dynamic response to load changes


Fast response to load changes has been a challenge for a long time, especially when it comes

to changing from positive to negative current and vice versa. Previously, for applications

requiring source and sink devices, several solutions were offered such as pre-loads. The full

integration of source and sink in one device is a neater and more efficient solution. The output

voltage of a SM500-CP-90 recovers in 200µs after a load change from +90 to -90A and -90 to




Inclusive functionality


Besides the constant power output and the bi-directional power flow a lot of other features are

included in the standard versions of the SM15K series. For instance:


    • Ethernet interface
    • Built-in sequencer
    • Simulation software: Leadless sensing, Internal resistance and PhotoVoltaic simulation
    • Digital control to adapt regulation to match load type
    • Fine tune settings

And many more. There are no additional charges for these features.



Optional interfaces


The standard interface for the SM15K units is the Ethernet interface (16 bit) with built in

sequencer. Optional plug and play interfaces are: 


    • Master/Slave interface series and parallel operation
    • Isolated analog programming interface
    • Serial interface with multi protocols: RS232, RS485, RS422, USB (device)
    • Digital I/O interface
    • Interface with isolated contacts



Data sheet


Download the data sheet (preliminary version) of the SM15K series by clicking on the link



Data sheet



More SM15K news


Be first to know when this new product will be released by subscribing to our newsletter









SM3000 is retired


IMA_SM3000 retiring 

With effect of Januari 1, 2017 Delta Elektronika has stopped the production of the SM3000

series. We have produced these power supply models since 1991. Now it's time to retire. 


Defect units will be repaired for a period of 10 year after production stop. Of course against

cost price because Delta power supplies ought not to breakdown. For this reason we don't

want to make profit on repairs. Spare parts will be available for 10 years as well.


The SM3000 series have been replaced by the SM3300 series. See below overview.


SM3000 unit       SM3300 unit
    • SM15-200D
       replaced by:        
    • SM18-220
    • SM30-100D
  replaced by:  
    • SM66-AR-110
    • SM45-70D
  replaced by:  
    • SM100-AR-75
    • SM70-45D
  replaced by:   
    • SM100-AR-75
    • SM120-25D
  replaced by:   
    • SM330-AR-22
    • SM300-10D
  replaced by:   
    • SM660-AR-11




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E: by filling out the contact form


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