1
PSB-24V5A
PSB 27,6V/5A enclosed switch
mode buffer power supply
Edition: 1 from 28.04.2020
Supercedes the edition: ------------
EN
Features of the power supply:
DC 27,6 V/5 A uninterruptible power supply
high efficiency 90%
controlling of battery charging and maintaining
protecting of battery against excessive discharging
(UVP)
battery charging current 0,5 A/2 A, changed by
jumper
optional equipment: set of external LED indicators:
PKAZ168, mounting plate DIN3
battery output is full protected against short-
circuit and reverse connection
LED optical signalisation
protections:
short-circuit protection SCP
over voltage protection OVP
surge protection
overload protection OLP
warranty
– 2 year from the production date
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
24 V DC (+/-15%).
The power supply provides a voltage of
U=27,6 V DC
with an output current of:
1.
Output current of 4,5 A + 0,5 A battery charging
2.
Output current of 3 A + 2 A battery charging
Total device c battery: 5 A max.
In case of power voltage decay, prompt switching to battery supply occurs. The power supply unit is protected
against a short circuit, an overload, a surge or over voltage protection.
1.2. Technical parameters.
Supply voltage
~ 200
– 240 V; 1,3 A; 50/60 Hz
Inrush current
50 A
Supply power
138 W
Efficiency
90%
Output voltage (factory settings)
22-27,6 V DC
– buffer operation
19-27,6 V DC
– battery operation
Output current
5 A
Battery charging current
0,5 A / 2 A jumper selectable
Voltage adjustment range
27
– 28,8 V DC
Current consumption by PSU during battery-
assisted operation
approx. 25 mA
Ripple voltage
100mV p-p max.
Short-circuit protection SCP
electronic, automatic recovery
Overload protection OLP
105-150% PSU power, automatically recovered
Overload protection (battery) OLP
melting fuse T6,3 A
Surge protection
varistors
Overvoltage protection OVP
>37 V (activation requires disconnecting the load or supply
for about approx. 1 min)
Excessive discharge protection UVP
U<19 V (
± 5%) – disconnection of battery
Optical signalisation
LED green
– indicates DC voltage at the power
LED optical indication output (intended for optional
indication set PKAZ168)
LED AC
– presence of AC voltage
LED DC
– presence of DC voltage on power supply output
LED CHARGE
– battery charging process
Optional equipment
A set for optical indication LED PKAZ168
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]
