Power supply type range

Design principle

Series HCK ...	List of Types	Printer friendly data sheet (PDF)
Features: Efficiency approx. 90% In units of 20 kV and higher, the HV-components are moulded in (removable) silicon resin. From 35 kV / 5000 J/s on, the HV-components are isolated in oil The charging process can be continuous or triggered via an external trigger input (Opto coupler input with 12 - 24V) Charging with adjustable constant current (without overshoot) Voltage and current setting with 10-turn potentiometers with precision scale; the adjusting knob can be locked Suitable for continuous or compensation charging No external protection resistor is required Permanent short-circuit proof 3½ digit DVM for charging current and output voltage Pre-selection of the output voltage with display The charging process is either permanent or controlled via a potential free input End of charge signal, when the final voltage is reached. - on a LED on the front panel - on a potential-free interface for signalling to an external control system (opto-coupler output) Suitable for capacitive loads with resistive elements The nominal current can be permanently supplied at maximum output voltage

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Function:

The capacitor charging high voltage DC power supplies are designed specifically to the requirements of capacitor charging or capacitor conditioning, i.e. they have a more heavily designed output resistor to withstand a pulsed load and a regulating circuit, optimized for fast switching over between current and voltage regulation and vice versa.

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.

Design:

• Up to 2500 J/s nominal power 19" table-top case, higher power in 19" racks (depending on type) with oil isolated external HV-container.

Output:

• Output isolation:
  The polarity is positive or negative and has to be indicated with the order. The "0V" - terminal of the output is connected to earth but may be disconnected as needed. When disconnected, the  "0V" (earthy) terminal may float with respect to earth up to ±300 V.
• Output terminals:
  For table-top units up to 20 kV nominal voltage, the output is on the front panel. For all other types the output is on the rear side of the unit or on a separate HV-container.
  Mating HV-connectors are included, from 35 kV on, assembled with 3 m cable, from 65 kV >5000 J/s on with 10 m cable.

Technical Data:

• Mains connection: 

  Up to 800 J/s nominal power:	230 V ±10% 47 Hz to 63 Hz;
  For nominal power 1600 J/s and higher:	400 V ±10% 47 Hz to 63 Hz 3-phase

• Ambient temperature: 0°C to +40°C

• Charging power:
  The specified max. charging power (see table beneath) will be supplied for charging between "0" and the rated voltage. For charging of a partially discharged capacitor a considerably higher charging power, up to the doubles, can be supplied.

• Setting range for the charging voltage: from approx. 1% to 100%

• Setting resolution (Ten-turn-potentiometer): ±1 x 10^-3

• Reproducibility of the charging voltage with respect to the rated value:

  for ±10% mains voltage variation:  over 8 hours under constant conditions:  within the temperature range: for a repetition frequency of <10 Hz:  for a repetition frequency of >10 Hz:

  <±1 x 10-4 <±1 x 10-3 <±2 x 10-4 /K <±1 x 10-3 <±1 x 10-2

• Repetition frequency: max. 100 Hz

• Residual ripple of the charging current: approx. 10%pp (20kHz / 40 kHz)

Possible Options:

	Analogue programming
	Analogue programming, floating
	Computer interface - IEEE 488, RS 232, RS 422, USB, LAN (Ethernet), Profibus DP (more on request)
	Polarity reversal switch available up to 1600 J/s (by request for higher powers) Please specify the output polarity, when ordering without polarity reversal switch.
	Dump switch for the output & the load
	Higher repetition frequency
	Built-in or external discharge circuit for pulse operation

More options and special solutions on request. Some options may involve changes to the description of the unit - especially concerning the mechanical design.

HCK Standard Types:

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For prices please ask us or one of our representatives.

3) Mains connection three-phase
*) With the option polarity reversal switch these units are 2 HU / 90 mm higher.
**) With the option polarity reversal switch these units are 550 mm deep.
***) The dimensions are valid only for the power part The high voltage part will be in a separate oil container. Weight: Power part / High voltage container.