S81-PU002 (Power Supply Unit)

  • This power supply set is able to supply a maximum current of 32 amperes, duplicated to the load, and to control and charge two 12 Volt batteries with maximum capacity of 120Ah.
  • Battery maximum charge current is 6 amperes.
  • Under normal operating conditions, a simplified test is carried out every 30 seconds in order to check the proper presence of the batteries.
  • A full test is carried out every hour in order to check electrical connections and battery efficiency.
  • During battery trickle charge, battery voltage is compensated automatically according to the temperature.
  • In case of mains voltage failure, batteries are automatically switched to the load without any interruptions.
  • Should the full charge stage exceed 24 hours, the power supply unit will signal a battery fault.
  • In case of primary power supply failure, the system will shut batteries down when the on-load voltage is lower than 18VDC in order to avoid damaging the batteries.
  • The set features seven open collector outputs for replicating the various types of faults to the alarm control panel, along with a RS232 port for the connection to the configuration program Test-PUA009.
  • Hot-swapping is possible for both the 4 AC/DC converters and the battery charger (Hot Plug).

 

Technical Features

  • Input voltage: 110-240V~ (-15% – 10%)
  • Free-air operating temperature: -5 °C – 50 °C
  • Relative humidity: 93% non-condensing
  • Protection class: IP20
  • Protections: Line fuse T10A H 250V (5×20)
  • Battery voltage: 26.2 to 28.7 VDC, compensated automatically
  • VLOAD Voltage: 25VDC +-2%
  • VLOAD max. Current: 32A duplicated
  • VLOAD Ripple: < 110mVpK- pKat maximum current
  • Resistance to mains voltage dips: >=20mS at maximum current
  • Maximum battery current: 6A
  • Protections:  Over-voltage, short circuit and battery reverse polarity
  • Reference Standards: EN54-4
  • EC Reference standards: EN50081-2 & EN50082-2 (Industrial Environment)
  • Safety: EN60950 (CEI-74-2)