Switching power supply

Power-supply system NSD-1800-XXX

ProductOutput voltageOutput current
NSD-1800-48048 V - 54,5 V36 AOrder
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Product demand

Power-supply system in a 19" case, 1800 W

  • Input voltage 100 V to 256 V AC
  • One to three source modules with 600 W each and with active load sharing
  • Two to five independent protected output circuits
  • One to two input circuits for connecting of backup batteries
  • Battery management including LVD
  • A fully digital control unit with a communication module
  • Allows remote administration via HTTP and SNMP
  • Local reporting of selected alarms by means of potential free contacts
  • Efficiency 92 %
  • Meets the requirements of the standards EN 60950, EN 55022/B
  • Operation modes:
    • parallel mode,
    • redundant mode
  • Indication of operating state of the source module on the front panel
  • It is possible to attach a module that enables connecting two independent input networks (input redundance)

Source module - Output

  • Output voltage 48 V (adjustable and controlled in the range of 48 – 54.5 V)
  • Performance reduction 2 %/°C (from 40 to 50 °C)
  • Output power: max. 1800 W
  • Operating state indication: output voltage U A (green)
  • Output voltage deviation at:
    • Variation of supply voltage max. 0.1 % 100 ... 253 V AC
    • Static load change max. 1 % share 10 – 90 % load
  • Current limit
    • Typ. trigger value 12,2 A fixed
  • Typ. hold up time 20 ms at 230 V AC, I out=100 %, Vout=80 %Vnom
  • Circuit-closing and time-current characteristic without a back-swing, approximately a monotonous flow
  • Efficiency NSD-1800-480 typ. 92 % / 1800 W at 230 V ACin, 100 % working load

Source module - Input

  • Input voltage 100 - 253 V AC
  • Input frequency 47 – 63 Hz
  • Input power max. 6 A at 230 V
  • Interference elimination class EN 55 022/B 150 kHz... 30 Mhz
  • Circuit-closing wave max. 6 A at cold start
  • Internal input fuse 5x20 mm F6,3 AH/250 V in each power supply unit

Remote control and signalling

  • A detailed description can be obtained on request at bke@bke.cz

Electromagnetic compatibility

  • Interference emission, EN 55 022 class B
  • Interference immunity according to the EN 50082-1
    electrostatic discharge, EN 61000-4-2 8 kV contact discharge (Level 4)
  • Group of pulses resistance (burst) 2 kV, 5/50, 5 kHz, EN 6100-4-5
  • Surge impulse EN 61-000-4-5
    • 4 kV (cl. 4) asym.: L,N against PE, machine in operation
    • 2 kV (cl. 4) sym.: L against N, machine in operation

Electric safety

  • Test voltage 3 kV AC input/output
    • 1.5 kV AC in/PE
    • 500 V AC out/PE
  • Air distance / surface way 6.0 mm in/out
  • Class I VDE 0106 part 1, IEC 536
  • Earth wire resistance < 0.1 Ohm. VDE 0805
  • Protection IP 20 DIN 40 050, IEC 529

Operating data

  • Operating temperature max. 0° to +50°C
    • optimum temperature +18 - +25 °C
  • Storage temperature -20 to +70 °C
  • Air humidity max. 90 % RH
  • Cooling by means of natural convection – do not hinder passage of cooling air
  • Altitude up to 2000 m above the sea level

Distribution

The output voltage circuits, just as the circuits for accumulator connection, have electronic protection against short-circuit in form of DC circuit breakers. Distribution may include up to 4 output circuits and 2 accumulator circuits. The accumulator circuit contains also protection against low voltage discharge (LVD). The state of all circuits is monitored by a control unit.

Operating position

The machine is designed to be mounted into and operate in a 19" rack.

Dimensions and weight

19" power-supply system with a touch cover – intended to be mounted into devices
3HE mounting height (132 mm), 84 TE mounting width (425 mm), depth 300 mm
Weight: approx. 9 kg (a fully equipped system)

5 years warranty (since production year 2009)