Operating instructions

www.pulsar.pl          EN54-3A28              RED POWER 
6
3. Functional requirements of the PSU. 
The buffer power supply for fire alarm systems has been designed in accordance with the following 
standards: 
- EN 54-4:2001 and / A2:2007 Fire detection and fire alarm systems. 
- EN 12101-10:2007 Smoke and heat control systems. 
Functional requirements 
Requirements 
according to 
standards 
PSU 
EN54-3A28 
External Power Supply failure indication  YES  YES 
Two independent power supply outputs protected against short-
circuit 
YES  YES 
Temperature-compensated battery charging  YES  YES 
Measurement of the resistance of the battery circuit  YES  YES 
Low battery indication  YES  YES 
Deep discharge battery protection  YES  YES 
Protection against short-circuit of the battery terminals  YES  YES 
Battery fuse failure indication  YES  YES 
Charging circuit failure indication  YES  YES 
Low output voltage indication  YES  YES 
High output voltage indication  YES  YES 
Indication of power supply failure  YES  YES 
Overvoltage protection  YES  YES 
Short-circuit protection  YES  YES 
Overload protection  YES  YES 
Output of collective failure ALARM  YES  YES 
EPS technical output  YES  YES 
APS technical output  YES  YES 
PSU technical output  -  YES 
Input of an external failure indication EXTi  -  YES 
Controlled relay output EXTo  -  YES 
Remote battery test  -  YES 
230V AC mains supply voltage measurement  -  YES 
Optical indication – LED display  -  YES 
Tamper indicating enclosure opening  -  YES 










