Power supply type range

Design principle

Switch mode power supply

Series HCE ...		Printer friendly data sheet (PDF) Data sheet analog programming (PDF)
Features: Compact size Light-weight Analog programming as a standard For units from 6.5 kV nominal voltage on, all HV components are moulded in (removable) silicon Short circuit and flashover proof Unlimited operation with rated current in a short-circuit condition Unlimited operation with rated power Voltage regulation Adjustable current limit Control mode indicated by LEDs Screwdriver adjustment of voltage and current on the front panel Standard analogue programming plus HV ON/OFF input and monitor outputs Measuring terminals for voltage and current on the front panel Suitable for use with capacitive loads Suitable for use with photomultipliers

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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:

• EURO-cassette design. Width depending on type.
• 19" frames are available as an option.

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 ±125 V.
• Output terminals:
  Outputs are located on the rear of the units.
  For units up to 650 V nominal voltage, the output is on 4 mm safety connectors.
  From 1250 V nominal voltage on, HV-connectors are provided. The mating HV-connectors are delivered with the unit.

Technical Data:

• Mains connection:
  230 V ±10% 47 Hz to 63 Hz

• Ambient temperature: 0°C to +40°C

• The following data applies for voltage and current regulation, and refers to the rated value (if not stated otherwise):
  (For explanations please refer to the Terms & Definitions page.)

  Setting range:	from approx. 0,1% to 100%
  Reproducibility:	±1 x 10-4
  Setting resolution (potentiometer):	±1 x 10-3
  Residual ripple:	<1 x 10-4pp + 50 mVpp, typ. 5 x 10-5pp
  Recovery time:	<1 ms for load changes from 10% to 100% or from 100% to 10%.
  Setting time at nominal load:	<200 ms for changes of the output voltage from 10% to 90% or 90% to 10%
  Discharging time constant for output without load:	approx. 0,5 sec. to 5sec., depending on type
  Deviation:  for ±10% mains voltage variation: for no load / full load: over 8 h under constant conditions: within the temperature range:	<± 1 x 10-5 <2 x 10-4 <±1 x 10-4 <±1,5 x 10-4 / K

• Voltage and current adjustment by screwdriver or by analogue programming.

HCE Data Sheet:

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