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PSB501235
PSB 13,8V/3,5A enclosed switch
mode buffer power supply
Edition: 5 from 22.10.2011
Supercedes edition: 4 from 24.08.2011 EN
Features of the power supply:
•DC 13,8V/3,5A uninterruptible power supply
•wide AC input voltage range 176÷264V
•high efficiency 76%
•controlling of battery charging and maintaining
•protecting of battery against excessive
discharging (UVP)
•battery charging current 0,5A
•battery output is full protected against short-
circuit and reverse connection
•LED optical signalisation
•protections:
•SCP short-circuit protection
•OVP overvoltage protection
•overvoltage protection (output AC)
•overload (OLP)
1. Technical description.
1.1 General description.
Buffer-type power supply units are intended for continuous power supply to devices that require stabilised voltage
of 12 V DC (+/-15%). The power supply provides a voltage of U=13,8 V DC with an output current of I=3A+ 0,5A battery
charging. In case of power voltage decay, prompt switching to battery supply occurs. The power supply has the
following protections: short-circuit (SC ), overload (OL ) and overvoltage (OV ).
Under normal operation, the total current drawn by the equipment may not exceed I = 3 A; Maximum
battery charging current: 0.5 A. Total device current + battery: 3.5 A max.
1.2.Technical parameters.
Supply voltage 176 ÷ 264V AC
Current consumption 0,6A@230VAC max.
Supply power 50W max.
Efficiency 76%
Output voltage 13,8V DC – buffer operation
9,5V÷13,8V DC – battery operation
Output current
Output current t
<30°C 3A + 0,5A battery charging - refer to graph 1.
Output current t
=40°C 2,1 A + 0,5A battery charging - refer to grap h 1.
Voltage adjustment range 12÷14V DC
Ripple voltage 120mV p-p max.
Battery charging current 0,5A max.
Short-circuit protection SCP electronic
Overload protection (battery) OLP polymer fuse (PTC)
Overvoltage protection OVP U>115% ÷ 150% of the output voltage, isolation of the
output voltage, atomatic recovery
Excessive discharge protection UVP U<9,5 V (± 5%) – disconnection of battery
Optical signalisation green LED- presence of AC voltage
Output of optical signalization LED AC- presence of AC voltage
LED DC- presence of DC voltage on power supply output
Operation conditions 2-nd enviromental class, temperature: -10
C÷40
C
relative humidity 20%...90%, without condensation
Dimensions (LxWxH) 159 x 97 x 42 [mm]
Net/gross weight 0,48kg / 0,53kg
Protection class PN-EN 60950-1:2007 I (first) - requires a protective conductor (PE)
Connectors power-supply: Φ0,63÷2,5 I/O PCB : Φ0,41÷1,63
battery output BAT: 6,3F-2,5/40cm,
output of optical signalization: plug 3-pin 5 mm