Series HCP from 3.5kV to 300kV / 14W to 1.4kW


  • compact size and light weight
  • efficiency approx. 90%
  • for units from 12.5kV nominal voltage on, all HV components are moulded in (removable) silicon
  • short-circuit & flashover proof
  • unlimited operation with rated current in a short-circuit condition
  • unlimited operation with rated power
  • voltage and current regulation with automatic sharp transition, control modes indicated by LEDs
  • adjustable overvoltage protection (limitation of set value)
  • 4½ digit DVM''s for voltage and current for all models
  • voltage and current setting by means of 10-turn potentiometers with precision scale; the adjusting knob can be locked
  • indication of set point values by means of button for switchover of the displays
  • set point adjustment possible with locked output, release of output voltage by means of "ON" / "OFF" switch
  • suitable also for inductive and capacitive loads
  • suitable for photomultipliers


In principle, the rectified line voltage drives a square wave generator of fixed frequency, whose AC voltage is transformed, rectified and filtered, producing the output voltage. For regulation, the square wave voltage is pulse width modulated. A low residual ripple of the output voltage, together with a high stability, high regulation speed and a low stored energy are all achieved by virtue of the high switching frequency.


  • ½19" or 19" table-top case (depending on output voltage and power)
  • 19" Rack-adapters for mounting into a 19" rack are available as accessory


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. If required, the "0V" terminal can be made floating against earth up to ±300V. A polarity reversal switch is optionally available.
Output terminals All output terminals are located at the rear side of the unit. High voltage connectors with the appropriate dielectric strength are delivered with the power supply. For nominal voltage of 65kV and higher the HV-plug will be delivered ready mounted to 3m cable.

Technical Data:

Mains connection ≤ 1400W: 230V ±10% 47Hz to 63Hz
≥ 2800W: 400V ±10% 47Hz to 63Hz, three-phase
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. 0.1% to 100%
Setting resolution ±1 x 10-4
Residual ripple (0-10MHz) < 1 x 10-4pp + 50mVpp, typ. 5 x 10-5pp
Recovery time

Voltage control:
< 1ms for load changes from 10% to 100% or from 100% to 10%

Current control:
< 10ms for load changes causing an output change of less than 10% of the rated voltage

Setting time at nominal load < 500ms for changes of the output voltage from 10% to 90% or 90% to 10%
Discharge time constant
for output without load
approx. 2sec. to 10sec., depending on type

for ±10% mains voltage variation:
< ±1 x 10-5

for no load / full load:
< 2 x 10-4

over 8 hours under constant conditions:
< ±1 x 10-4

within the temperature range:
< ±1,5 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.
Coarse/fine-potentiometers Coarse/fine-potentiometers (99% / 1%) for more accurate adjustment of voltage and / or current.
Computer interface IEEE 488, RS 232, RS 422, Profibus DP, USB, LAN (more on request)
Higher stability Voltage and/or current regulation with better long-term stability and lower temperature coefficient.
Power limitation Besides the standard voltage regulation and current regulation, the units may be equipped with an additional regulation loop for constant power.
Lower ripple On several series a lower ripple can be achieved by better smoothing. This option can be supplied only with new units. A later modification is not possible. For an order with this option applies.
Lower stored energy Especially for the operation of gas discharge processes, arcs or similar loads with a negative dynamic resistance characteristic, the quantity of stored energy can be decreased by smaller output capacitors. Those units will have than a higher ripple up to 1%.
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.