POWER SUPPLY EXPSU20 EN54-4

Fire-fighting power supply EN54-4 redundant 40 + 40A RPS LE-Ra-SBC-24 has been certified by SV; integrated in the EXFIRE360 control unit; with RS485 serial for centralization of information on current readings; the settings with an RPS characteristic (redundant power supply) capable of managing systems with high energy capacity 80A, supplied by groups of external batteries with capacities up to 700Ah.

The system supplies a voltage proportional to the end-of-charge voltage (27.6Vdc @ 20 ° C); with a redundant power supply configuration N 1 through 2 removable drawer modules inserted in a 19 “1U rack mechanism called FPS-S / 1U; or different configurations type N 2 (1 Rack FPS S / 1U complete with 3 FPS1000-24 power supplies); or an NM 1 configuration (including 2 FPS S / 1U racks in parallel; with each 2 FPS1000-24); it will implemented in the event of different AC power sources.

Fire-fighting power supply EN54-4 certified redundant 40 + 40A RPS; includes groups of mixed series / parallel external batteries (typically sealed lead-calcium batteries type VRLA FIAMM or traditional refillable vessels) which; with the presence of electrical power, it kept charged thanks to to the on-board control of the system, which; through the internal reading of the battery branch current; modulates the output voltage of the rack (s) to maintain the charge profile as explained below.

The batteries

The batteries will be of the sealed lead type with no need to top up. The power supply part will made in accordance with the applicable legislation in force; in any case possible points of contact with the mains power supply its signaled and reduced. The power supply unit its made in accordance with EN 54-4 A1 standards. Fire-fighting power supply EN54-4 certified redundant 40 + 40A RPS; it will be able to provide the control panel with information capable of signaling fault conditions and malfunctioning.

It will be possible to interrupt the primary network (upstream), to check the secondary power supply service. The battery charger / power supply system its sized to work 72 hours in the absence of mains power supply. Primary power failure will signaled. The abnormal condition will signaled discharged or disconnected batteries on the control unit.