Pulsar PSB-24V3A User Manual

1
PSB-24V3A
PSB 27,6V/3A 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/3 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/1 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 years from 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 3 A + 0,5 A battery charging
2. Output current of 2,5 A + 1 A battery charging
Total device current + battery: 3,5 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 A; 50/60 Hz
Inrush current
40 A
Supply power
97 W
Efficiency
87%
Output voltage (factory settings)
22-27,6 V DC – buffer operation
19-27,6 V DC – battery operation
Output current
3,5 A
Battery charging current
0,5 A / 1 A jumper selectable
Voltage adjustment range
27 – 28,8 V DC
Current consumption by PSU during battery-
assisted operation
approx. 10 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 F4 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
Temperature: -10
o
C ÷ +40
o
C relative humidity 20%...90%,
without condensation

Pulsar PSB-24V3A Specifications

General

Input Voltage	100-240VAC
Output Voltage	24VDC
Output Current	3A
Power Rating	72W
Type	Power Supply
Protection	Overload, Over Voltage, Short Circuit

Summary

Power Supply Features and Protections

Uninterruptible Power Supply

Provides a 27.6 V DC uninterruptible power supply with 3 A output.

High Efficiency

The power supply unit operates with a high efficiency of 90%.

Battery Management

Controls battery charging, maintenance, and protects against excessive discharge (UVP).

Selectable Battery Charging

Battery charging current can be set to 0.5 A or 1 A using a jumper.

Optional Equipment

Optional external LED indicators (PKAZ168) and mounting plate (DIN3) are available.

Battery Output Protection

Battery output is fully protected against short-circuit and reverse connections.

Optical Signalisation

Features LED indicators for optical signalisation.

Integrated Protections

Includes SCP, OVP, surge protection, and OLP protections for device safety.

Warranty Information

The product comes with a 2-year warranty from the production date.

Technical Description and Parameters

General Description

Buffer-type power supply for stabilised 24 V DC (+/-15%), providing 27.6 V DC output.

Output Current Capabilities

Provides 3A + 0.5A battery charging or 2.5A + 1A battery charging.

Terminal Descriptions

DC Output Voltage LED

LED indicator for the DC output voltage status.

Output Voltage Adjustment

Potentiometer used for adjusting the output voltage.

Optical Signalization Connector

Connector for the external optical signalization LED.

Power Supply Output

Terminals for the main power supply output (V+, V-).

Battery Connector

Terminals designated for connecting the battery (B+, B-).

Battery Charging Current Jumper

Jumper to configure battery charging current to 0.5 A or 1.0 A.

Input Voltage and Ground Connectors

Connectors for 230 V AC input (L-N) and the protective conductor.

Installation Procedure and Requirements

Installation Requirements

PSU must be mounted by a qualified installer in closed rooms within specified humidity and temperature limits.

Installation Steps

Detailed procedure including power disconnection, wiring, ground connection, voltage check, and component connection.

Shock Protection Circuit

Emphasizes the critical importance of a properly made shock protection circuit.

Maintenance Recommendations

Power supply requires no special maintenance, but dusting with compressed air is recommended for dust accumulation.