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PSP Family Boxes

Electroplating Processes, Electro-Polishing, Laboratory Applications, Tampon-Galvanizing, Coating Technology, Pulse Applications

Product Design
The compact and easy to transport PSP boxes are a ready-to-go system. Mains supply can be easily achieved by a socket. The rectifier can be operated via current / voltage control.

Equipped with a clearly arranged digital display the rectifier guarantees a good readability. Optional features are programmable Ah-/Amin-/ Asec meters, timers, ramp functions and pulse applications.

The air-cooled PSP Family rectifiers are also available as modules and plug-in units.


Customer Benefits
Easy to operate, for individual use, scalable, short-ciruit-proof, low ripple, controllable via SPS or PC.


  • Analogue
  • Profibus DP, ProfiNET
  • Modbus

Block Diagram
The switch-mode rectifier is featured with the following five functions:
High-frequent disturbances are reduced in the mains filter (1). On the other hand the mains filter is used to dampen the interference voltages. The mains rectifier converts the voltage into DC voltage (2). The power electronics (3) then convert the DC voltage pulse width modulated into a staircase-shaped alternating voltage. The internal transformer (4) stands for a galvanic potential separation and voltage adjustment on the secondary side. On the output side rectification is achieved by fast power diodes (5). On the output side a constantly smoothed and fully controllable DC voltage is generated.


Technical Data (applies for all sizes)

Ripple (alpha units): < 1 % (over the entire output range)/td>
Ripple (gamma units): < 3 % (over the entire output range)
Duty factor: 100 %
Adjustment: 0 – 100 %
Control: constant current and voltage control
Efficiency: > 80 – 95 % (depending on the design)


The air-cooled PSP Family Boxes are available in the following sizes:

Size Output Range
Current Range Voltage range
alpha S 250 W 25 A 25 V
alpha M 500 W 50 A 30 V
alpha L (1 kW) 1000 W 100 A 400 V
alpha L (1,5 kW) 1500 W 150 A 400 V
alpha XL 3000 W 600 A 400 V
gamma S  10kW 800 A 600 V
gamma M 15 kW 1000 A 600 V
gamma L 25 kW 1500 A 600 V