Rittal 7338.321, Монтаж, установка и эксплуатация

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3 Structure, function and connections
3.1 Structure
Fig. 2: Structure of the system
1 Tank (extinguishing agent container) with
fill level monitoring and release device
2 Propellant cartridge
3 Loss monitoring card
4 Connection strip (connection technology
card / network interface card
5 Control card CPU3
6 Discharge nozzle
7 Front panel
3.2 Function
In the event of a release, the system is triggered by a superordinate system (Active
extinguishing system DET-AC III Master or aspirating smoke detection system
EFD III). The release device is triggered electrically whereby the propellant cartridge
(Fig. 2 /2) is opened and the foaming agent flows into the tank (Fig. 2 /1). The relay
output „Extinguishing” is triggered. The foaming agent forces the extinguishing
agent to the discharge nozzle (Fig. 2 /6). At the nozzle, the extinguishing agent
vaporizes and develops the concentration necessary for extinction in the switch cab-
inet to be protected.
The fill level monitoring, which is integrated in the tank, reports an extinguishing
agent loss to the electronic evaluation unit of the superordinate system, which then
shows a failure (extinguishing agent loss) on the display. The relay output „Common
failure” is triggered.
The power supply for the system is ensured by means of the superordinate system.
The operation and display of the current state of the system is by means of the
superordinate system.
Structure, function and connections
Operating Instructions / DET-AC III Slave / 916007 / 05-2016 / en_US 20