Pulsar PSB-12V20A Quick Start Manual


DC 13,8 V/20 A uninterruptible power supply

high efficiency 86%

built-in power factor correction system (PFC)

controlling of battery charging and maintaining

protecting of battery against excessive discharging
(UVP)

battery charging current 2/4/8 A, changed by
jumper

optional equipment: set of external LED indicators:
PKAZ168, mounting plate DIN4
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:
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
Inrush current
Supply power
Efficiency
Factor PF
Output voltage (factory settings)
Output current
Battery charging current
Voltage adjustment range
Current consumption by PSU during battery-
assisted operation
Ripple voltage
Short-circuit protection SCP
Overload protection OLP
Overload protection (battery) OLP
Surge protection
Overvoltage protection OVP
Excessive discharge protection UVP
Optical signalisation
LED optical indication output (intended for optional
PSB 13,8V/20A enclosed switch
mode buffer power supply
Features of the power supply:
1. Output current of 18 A + 2 A battery charging
2. Output current of 16 A + 4 A battery charging
3. Output current of 12 A + 8 A battery charging
Total device current + battery: 20 A max.
~ 200 – 240 V; 1,5 A; 50/60 Hz
60 A
276 W
86%
>0,95
11-13,8 V DC – buffer operation
9,5-13,8 V DC – battery operation
20 A
2/4/8 A jumper selectable
13,5 – 14,4 V DC
approx. 25 mA
150mV p-p max.
electronic, automatic recovery
105-150% PSU power, automatically recovered
melting fuse T20 A
varistors
>19 V (activation requires disconnecting the load or supply
for about approx. 1 min)
U<9,5 V (± 5%) – disconnection of battery
LED green – indicates DC voltage at the power
LED AC – presence of AC voltage
1
PSB-12V20A
Edition: 1 from 28.04.2020
Supercedes the edition: ------------

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

OHP overheat protection

forced cooling - built-in fan

warranty – 2 years from production date
EN