User Instructions

1
PS-1504830
PS 48V/3A enclosed switch mode power supply
PL
Edition: 2 from 01.03.2018
Supercedes edition: 1 from 14.12.2016
EN
Features of the power supply unit:
 power output 3A/48÷53V DC
*
 wide AC input voltage range 176÷264V
 high efficiency 85%
 LED optical signalisation
 protections:
 SCP short-circuit protection
 overvoltage OVP
 overvoltage protection
 overload (OLP)
 warranty – 2 year from the production date
1. Technical description.
1.1. General description.
The power supply unit is intended for the feeding of alarm system equipments, which require 48V DC supply voltage
and current load I=3A. Their design enables simple changing of the output voltage, within the range of 48V÷53V DC, using a
potentiometer. The power supply units is protected against short-circuit, overload, surge protection and overvoltage.
1.2. Technical parameters.
Supply voltage
176 ÷ 264V AC
Current consumption
1,3A@230V AC max.
Supply power
150W max.
Efficiency
85%
Output voltage
48V DC
Output current t
AMB
<30°C
3 A - see graph 1.
Output current t
AMB
=40°C
2,1 A - see graph 1.
Voltage adjustment range
48V ÷ 53V DC
Ripple voltage
200 mV p-p max.
Short-circuit protection SCP
electronic (activation requires disconnecting load or supply for
about 5 s.)
Overload protection OLP
105 ÷ 150% of power supply (activation requires disconnecting
load or supply for about 20 s.)
Surge protection
varistors
Overvoltage protection OVP
>60V (activation requires disconnecting the load or supply for
about 20 s.)
Optical signalisation
green LED – presence of DC voltage
Operation conditions
2-nd enviromental class, temperature: -10
o
C ÷ +40
o
C
relative humidity 20%...90%, without condensation
Dimensions
L=199, W=110, H=50 [+/- 2mm]
Net/gross weight
0,7kg / 0,74kg
Protection class PN-EN 60950-1:2007
I (first) – requires a protective conductor (PE)
Connectors
power-supply:Φ0,63-2,50 (AWG 22-10)
outputs: Φ0,63-2,50 (AWG 22-10)
Electrical strength of insulation:
- between input (network) circuit and output circuits of
power-supply (I/PO/P)
- between input circuit and PE protection circuit
(I/P-FG)
- between output circuit and PE protection circuit
(O/P-FG)
3000 V/AC min.
1500 V/AC min.
500 V/AC min.
Insulation resistance:
- between input circuit and output or protection circuit
100 MΩ, 500V DC
Storage temperature
-20ºC...+60ºC
Vibrations and impulse waves during transport
according to PN-83/T-42106
* In order to extend the life of the power supply, the load current of 2,1A is recommended.
*
See graph 1.