Series HYN from 3.5kV to 20kV / 21kW to 50kW


  • simple construction
  • extremely robust
  • high efficiency
  • short circuit proof and unlimited operation with full current in short circuit condition
  • voltage and current regulation with automatic sharp transition, control modes indicated by LEDs
  • voltage and current setting with 10-turn potentiometers with precision scale; the adjusting knob can be locked
  • limitation of inrush current on switching on
  • suitable also for inductive and capacitive loads
  • interlock loop to monitor the external load and internal loop as a standard
  • elapsed-hour meter as a standard
  • 3½ digit digital displays for voltage and current


The mains voltage is transformed to high voltage potential. Either on the primary side or on the secondary side, a phase cutting circuit with thyristors is installed. The rectified voltage is smoothed by a LC-filter.


  • depending on voltage and power the units are built as single or double 19" cabinets of various height; the side covers are detachable, the rear door is lockable
  • all cabinets are equipped with fork-lift-compatible plinths and removable crane-eyes
  • single 19" cabinets up to 38U are easily transportable by fork-lift
  • cooling is carried out via convection or built-in fans, with the air being exhausted (depending upon type) either via the rear or the top


Output isolation The required output polarity must be stated with the order. The requested output polarity will then be available at the HV connector and the “0V” terminal will be firmly connected to earth. A polarity reversal switch is optionally available.
Output terminals All output terminals are located at the rear side of the cabinet. For Output current up to 10A high voltage connectors with the appropriate dielectric strength are installed. Mating connectors are delivered with the power supply.

Technical Data:

Mains connection 3 x 400V ±10% 47Hz to 53Hz +N, +PE
Ambient temperature 0°C to +40°C

The following data applies for voltage and current regulation, and refers to the rated value, unless otherwise stated. (For explanations please refer to Terms and Definitions)

Setting range from approx. 1% to 100%
Setting resolution ±1 x 10-4
Residual ripple (0-10MHz) < 1 x 10-2pp + 100mVpp
Recovery time < 100ms to 500ms (depending on type) for load variations of ±10%
Setting time at nominal load < 100ms to 2sec (depending on type) for changes of the output voltage from 10% to 90% or 90% to 10%
Discharge time constant
for output without load
approx. 5sec. to 60sec., depending on type

for ±10% mains voltage variation:
< ±1 x 10-4

for no load / full load:
< ±1 x 10-3

over 8 hours under constant conditions:
< ±3 x 10-4

within the temperature range:
< ±3 x 10-4 / K


Analogue programming All FuG power supplies are optionally available with an analog programming 0-10V (Standard with the series HCE and HCN 7E). This option is also available as retrofit set.
Computer interface IEEE 488, RS 232, RS 422, Profibus DP, USB, LAN (more on request)
Power limitation Besides the standard voltage regulation and current regulation, the units may be equipped with an additional regulation loop for constant power.
Internal resistance setting and regulation For electronic simulation of a changing internal impedance of the unit (e.g. battery characteristic). The technical design is similar to the power regulation.
Polarity reversal By this switch the polarity of the output voltage of a high voltage power supply (Nearly all of the HCP, HCL, HCN, HCK, HYN) can be changed.