Data Sheet

Pulsar
®
EN54/LED series power supply unit
Power supply for fire alarm systems 27,6 V DC
Tel. [phone], fax: [phone], www.pulsar.pl, e-mail:[e-mail]
General description
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 24 V DC (± 15%). The PSU
is fitted with two independently protected outputs AUX1 and AUX2, which supply voltage of 27,6 V DC with a total
output current:
Continuous operation
Output current Imax a=2 A
Instantaneous operation
Output current Imax b=3 A
In case of power loss, the PSU switches to battery power, providing uninterruptible power supply. The PSU is
enclosed in a metal casing (RAL 3001 - red) with battery housing for two 17 Ah/12 V batteries. The PSU works with
maintenance-free lead acid batteries made with AGM technology or gel technology.
PSU features:
· In accordance with standards:
EN 54-4:1997+AC:1999+A1:2002+A2:2006,
EN 12101-10:2005+AC:2007
· 27,6 V DC/ 3 A uninterruptible power supply
· battery housing for two17 Ah/12 V batteries
· independently protected outputs AUX1 and AUX2
· high efficiency 84%
· low level of voltage ripple
· microprocessor-based automation system
· intelligent PSU overload protection
· measurement of the resistance of the battery circuit
· automatic temperature-compensated charging
· battery test
· two-stage battery charging process
· accelerated battery charging
· monitoring of the continuity of the battery circuit
· monitoring of the battery voltage
· monitoring of the battery fuse
· monitoring of charging and maintenance of the
batteries
· deep discharge battery protection (UVP)
· battery overcharge protection
· battery output protection against short-circuit and
reverse connection
· monitoring of the load current
· output voltage control
· fuse monitoring of AUX1and AUX2 outputs
· ~230 V mains supply voltage measurement
· „SERIAL” communication port with implemented
MODBUS RTU protocol
· Power Security" is a free application for remote
monitoring of power supplies (for PC and Android
Phones)
· remote monitoring (options: Ethernet, RS485)
· remote battery test (additional modules required)
· cooperation with optional EN54-LB4 or EN54-LB8 fuse
modules
· optical indication of PSU overload OVL
· acoustic indication of failure
· adjustable delay for ~230 V power loss indication
· relay output of collective failure ALARM
· input of collective failure EXTi
· controlled relay output EXTo
· technical inputs/outputs with galvanic isolation
· EPS technical output indicating ~230 V power loss
· PSU technical output indicating PSU failure
· APS technical output indicating battery failure
· internal memory of PSU operating status
· optical indication – LED panel
· output current readings
· output voltage readings: AUX1, AUX2
· resistance of the battery circuit
· ~230 V mains voltage readings
· failure codes with history
· protections:
· SCP short-circuit protection
· OLP overload protection
· OHP overheat protection
· OVP overvoltage protection
· Surge protection
· Antisabotage protection - Tamper
· closing the enclosure - lock
· convection cooling
· warranty - 5 years from the production date