Pulsar EN54-5A17LCD 27.6V 5A 2x17Ah buffer power supply

Out of stock. Archived Product.

Pulsar EN54-5A17LCD buffer power supply for fire alarm systems DC 27.6V 5A

The buffer power supply has been designed for an uninterrupted supply of fire alarm systems, smoke and heat control systems, fire protection equipment and fire automatics requiring stabilized voltage of 24V DC (± 15%).
The PSU is fitted with two independently protected outputs AUX1 and AUX2, which supply voltage of 27,6V DC with a total output current:
  • continuous operation: output current Imax a=4A
  • instantaneous operation: output current Imax b=5A
During normal operation, the PSU supplies a stabilized DC 27.6V voltage to the output and charges the connected battery, in the event of loss of input voltage, an automatic (uninterruptible) switching to battery operation takes place.

PulsarEN54-5A17LCD

PulsarEN54-5A17LCD


The PSU is enclosed in a metal casing (color: RAL 3001 - red) with battery housing for two 17Ah/12V batteries. The PSU works with maintenance-free lead acid batteries made with AGM technology or gel technology.

PSU features:
  • microprocessor-based automation system
  • intelligent PSU overload protection
  • battery test
  • two-stage battery charging process
  • ''SERIAL'' communication port with implemented MODBUS RTU protocol
  • optical indication of PSU overload OVL
  • acoustic indication of failure
  • relay output of collective failure ALARM
  • input of collective failure EXTi
  • controlled relay output EXTo
  • technical inputs/outputs with galvanic isolation
  • PSU technical output indicating PSU failure
  • APS technical output indicating battery failure
  • internal memory of PSU operating status
Side of the housing:

Side of the housing:

Back view:

Back view:



TECHNICAL PARAMETERS:
  • 230V AC power supply
  • power consumption: 0.95A
  • power of the PSU: 138W
  • power supply efficiency: 84%
  • output voltage at 20 ºC:
    • 22-27.6V - buffer work
    • 20-27.6V - battery operation
  • output current:
    • continuous work: Imax a = 4A
    • temporary work: Imax b = 5A
  • place for the battery: 2x17Ah / 12V
  • maximum battery circuit resistance: 300m Ohm
  • battery charging current: 1A
  • ripple voltage: 90mVp-p max.
  • battery protection:
    • protection against excessive discharge (UVP)
    • overcharge protection
    • protection of the battery output against short circuit and reverse connection
  • security:
    • short-circuiting SCP
    • OLP overload
    • overvoltage
    • overvoltage OVP
    • thermal OHP
    • tamper
  • convection cooling
  • dimensions: 420x420x102 + 8mm
  • Weight: 11.3kg
  • working temperature: -5 ° C ... + 75 ° C
EN54-5A17LCD has been adapted to work in a system in which remote control of operating parameters in the monitoring center is required (additional modules required):
  • communication in the RS485 network
  • communication in the ETHERNET network
  • communication in the WI-FI wireless network
It is also possible to connect the power supply to the computer via the USB-TTL interface.
Download
Datasheet 3.23 MB
CE Declaration 0.32 MB
Instruction 4.42 MB