4 zones extinguishant control panel for gas extinguishing system fire suppression panel
1. Introduction
The automatic extinguisher control panel is designed in accordance with European
standards EN54-2 and EN54-4 Fire Detection and Fire Alarm systems - Control and
Indicating Equipment and EN12094-1 Fixed firefighting systems - Components for
gas extinguishing systems - Part 1: Requirements and test methods for electrical
automatic control and delay devices.
The control equipment is a combined fire alarm control panel and extinguishing
system and has four detection zones, any or all of which are capable of contributing
to the extinguishant release decision.
Control panels have an integral, mains powered battery charger and power supply
designed in accordance with the requirements of EN54-4.
Technical specification
Table 1 - Electrical specifications
ITEM ELECTRICAL RATING COMMENT
Size 383mm W x 295mm H x 87mm D metal enclosure
Weight 5kg
Mains supply 90 to 270VAC, 50Hz/60Hz
Mains supply fuse 3 Amp ( F3A L250V) Replace only with similar type
Power supply rating 3 Amps total including battery charge 28V +/- 2V
Maximum ripple voltage ≤200 millivolts
Battery type Two 12 Volt sealed lead acid in series. 7Ah maximum
Battery charge voltage 27.6VDC nominal
Battery charge current 0.7A maximum
Current draw in mains fail condition 0.095 Amps With buzzer sounding
Current draw in second stage alarm 0.235Amps Two zones in fire(470 ohm in circuit)
Current draw in post discharge condition 0.310Amps solenoid outputs active
Maximum current draw from batteries 3Amps With main power disconnected
NAC outputs(sounder & bell circuit) 26 to 28V DC Fused at 500mA with electronic fuse 1.2Amp total load over all circuits
Fault relay contact rating 2A /30VDC maximum for each Volt free changeover contact
Fire relay contact rating 2A /30VDC maximum for each Volt free changeover contact
First stage contact rating 2A /30VDC maximum for each Volt free changeover contact
Second stage contact rating 2A /30VDC maximum for each Volt free changeover contact
Extract contact rating 2A /30VDC maximum for each Volt free changeover contact
Zone quiescent current 4mA maximum
Terminal capacity 0.5mm2 to 2.5mm2 solid or stranded wire
Number of detectors per zone ≤30 PCS conventional detectors
Number of sounders per circuit Dependent on type and current consumption
Detection circuit end of line 4K7±5% 1/2 Watt resistor 3K-5.6K 1/2W
Monitored input end of line 4K7±5% 1/2 Watt resistor 3K-5.6K 1/2W
Sounder circuit end of line 10K±5% 1/2 Watt resistor 6.8K-20K 1/2W
Extinguishant output end of line 10K±5% 1/2 Watt resistor 6.8K-20K 1/2W
No. of detection circuits Four 21 to 28V DC
No. of sounder circuits Four 21 to 28V DC
Extinguishant release output 21V to 28V DC. Maximum load 2 Amp
Extinguishant release delay time Adjustable 0 to 75 seconds 5 second steps
SIL, AL, FLT, RST inputs Switched – min resistance 0 ohms, max 1k ohms
Detector alarm threshold 270 ohms to 1K ohms
Call point alarm threshold 150 ohms to 1K ohms
Short circuit threshold 0 ohms to 130 ohms
Status unit/Ancillary board connection Two wire RS485 connection with electronic f
