Product Manuals/Man-1088_Sigma XT_26 Page 7 of 40
3. Technical specification
ITEM ELECTRICAL RATING COMMENT COMMUNICATION PARAMETERS
Mains supply 230V AC, 50Hz +10% - 15% (100 Watts maximum)
Standard European mains connection
Mains supply fuse 1.6 Amp ( F1.6A L250V)
Replace only with similar type
Power supply rating 3 Amps total including battery charge 28V +/- 2V
Maximum ripple current 200 millivolts
Battery type (Yuasa NP) Two 12 Volt sealed lead acid in series, Flame retardant UL94:V-0
7Ah maximum
Battery charge voltage 27.6VDC nominal (temperature compensated)
See chart below Modulated DC
Battery charge current 0.7A maximum
Modulated DC
Battery fuse 20mm, 3.15A glass
Replace only with the same type
Current draw in mains fail condition 0.095 Amps
With buzzer sounding
Current draw in second stage alarm 0.235A
Two zones in fire (470 ohm in circuit)
Current draw in post discharge condition 0.310A
Second stage and solenoid outputs active
Maximum current draw from batteries 3 Amps
With main power source disconnected
R0V output Fused at 500mA with electronic fuse
200 milliamp maximum load
Sounder outputs 21 to 28V DC Fused at 500mA with electronic fuse
1.6 Amp total load over all circuits
Voltage reversing DC
Fault relay contact rating 5 to 30VDC 1A Amp maximum for each
Maximum ratings not to be exceeded Volt free changeover contact
Fire relay contact rating 5 to 30VDC 1A Amp maximum for each
Maximum ratings not to be exceeded Volt free changeover contact
Local fire relay contact rating 5 to 30VDC 1A Amp maximum for each
Maximum ratings not to be exceeded Volt free changeover contact
First stage contact rating 5 to 30VDC 1A Amp maximum for each
Maximum ratings not to be exceeded Volt free changeover contact
Second stage contact rating 5 to 30VDC 1A Amp maximum for each
Maximum ratings not to be exceeded Volt free changeover contact
Extract contact rating 5 to 30VDC 1A Amp maximum for each
Maximum ratings not to be exceeded Volt free changeover contact
Zone quiescent current 0mA minimum, 2mA maximum
See tables 2 and 3 for detector types
Terminal capacity 0.5mm
solid or stranded wire
Number of detectors per zone
Dependent on type See table 2
Number of sounders per circuit Dependent on type and current consumption
See table 4 for sounder types
Detection circuit end of line 6K8 +/- 5% ½ Watt resistor
Supplied in terminals
Monitored input end of line 6K8 +/- 5% ½ Watt resistor
Supplied in terminals
Sounder circuit end of line 10K +/- 5% ¼ Watt resistor
Supplied in terminals
Extinguishant output end of line 1N4004 Diode
Supplied in terminals
No. of detection circuits Three. 21 to 28V DC
No. of sounder circuits Three. 21 to 28V DC
2 x first stage, 1 x second stage
Extinguishant release output 21 to 28V DC. Fused at 1 Amp
1 Amp maximum load –for 5 minutes Voltage reversing DC
Extinguishant release delay Adjustable 0 to 60 seconds (+/- 10%)
5 second steps
Extinguishant release duration Adjustable 60 to 300 seconds
5 second steps
SIL, AL, FLT, RST inputs Switched -ve, min resistance 0 ohms, max resistance 100 Ohms
Only to be used with Aux ROV terminal Switched DC
Zone normal threshold (Allowable EOL) 10K ohm to 2K ohm
Use 6K8 end of line resistor
Detector alarm threshold 1K ohms to 390 ohms
Nominal trigger resistance 470 ohms
Call point alarm threshold 370 ohms to 150 ohms
Nominal trigger resistance 270 ohms
Short circuit threshold 130 ohms to 0 ohms
Head removal condition 15.5 to 17.5 volts +/- 5%
2-wire detector base or schottky diode base
Cabling FP200 or equivalent (max. capacitance 1uF max inductance 1 millihenry)
Metal cable glands must be used
Monitored inputs normal threshold (Allowable EOL) 10K ohm to 2K ohm
Monitored inputs alarm threshold 2K ohms to 150 ohms +/- 5%
Monitored inputs Short circuit threshold 140 ohms to 0 ohms +/- 5%
Status unit/Ancillary board connection Two wire RS485 connection (EIA-485 specification)
Maximum of 7 units- RS485 data cable
(EIA-485 specification)
Status unit power output 21 to 28V DC,Fused at 500mA with electronic fuse
300 milliamp maximum load
Table 1 - Electrical s
To Next Page
Loading...
