User Instructions

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TABLE OF CONTENTS:
1. Technical description.
1.1 General description.
1.2 Block diagram.
1.3 Description of components and power supply connectors.
1.4 Technical parameters
2. Installation.
2.1 Requirements
2.2 Installation procedure.
2.3 The procedure for checking the power supply
3. PSU operation indication.
3.1 Optical indication of operation.
3.2 Technical outputs.
4. Maintenance and operation.
4.1 Overload or short circuit of the power supply output (SCP activation)
4.2 Protection against reverse battery connection.
4.3 Deep discharge battery protection UVP.
4.4 Battery test
4.5 Measurement of the resistance of the battery circuit
4.6 Measurement of the battery temperature
4.7 Maintenance
1. Technical description.
1.1 General description.
The DSOS24V is designed for uninterruptible power supply of call stations (firefighter's microphone) used
in VAS (Voice Alarm Systems) requiring stabilized voltage of 24V DC (-5%/+5%).
In the case of mains power loss, the PSU immediately switches to battery power. The power supply unit is
housed in a metal enclosure (color red RAL 3001) with space for a 7Ah / 12V battery. The power supply unit uses
maintenance free, AGM or gel batteries (7Ah/12V).
1.2. Block diagram.
Fig. 1.Block diagram of the power supply unit.