www.pulsar.pl
DSOP24V
5
2. Technical description.
2.1. General description of the power supply system of the DSO.
The DSOP24V power supply system is designed for uninterrupted supply of Voice Alarm Systems requiring
stabilized voltage of 24V DC (-15%, +20%). The system can be equipped with a 320 - 1000W power supply unit
with independently protected outputs for 5 or 9 audio amplifiers (each with 1000W power), 6 routers, and 1
controller.
The power supply is designed to supply 24V DC power to the controller and routers while the power supply
is powered directly from a 230V AC mains supply. In the case of mains power loss, all devices immediately switch
to a 24V DC battery backup. The entire DSO system with batteries is configured to provide the alarm and
supervision within the time required by the regulations when using backup power.
The DSO power supply system is housed in a RACK 19" enclosure with a space for additional equipment
and appropriate battery packs. The power supply unit uses maintenance free Sealed Lead-Acid (SLA) batteries
(AGM or gel batteries, included)
The system allows connection of 1 or 2 strings (circuits) of batteries, each with up to 230Ah, which allows for a total
capacity of 460Ah.
Power supply from the power grid can be supplied to the cabinet in the form of 1-phase or 3-phase
connection, which depends on the total power consumed by the DSOdevices.
The power supply unit is equipped with a system for measuring the resistance of batteries. Battery
monitoring is performed independently for each installed battery string.
The power supply is equipped with an additional Ethernet module with a 10Base-T/100Base-TX interface
to connect to the Internet. Such a configuration enables the remote monitoring of the Voice Alarm System over the
Internet from anywhere. The Ethernet module has a built-in powerful web server that allows remote monitoring of
the current status of the power supply in the browser of any PC computer. In addition, an email alert allows sending
information about the system status in case of certain events.
The CONFI-DSO program is designed for the proper and fast configuration of the DSO cabinet; based on
the implemented design parameters, the program selects a complete power supply system taking into account the
required backup time.
2.2. Electrical scheme.
Figure 1 shows an exemplary wiring diagram inside a DSO cabinet for a 3-phase 230V/400V AC
connection.
Fig.1. Block diagram of the DSO power supply system.