Global Fire Equipment // globalfire.pt
ma_gekko_01_010002_en_190522
equipped with a 2.3 Amp power supply @ 28.5V DC nominal.
4 Amp - Surge protected (slow blow)
20 mm HRC
Maximum 28,5V DC
Minimum 19,7V DC
24 V sealed lead acid batteries
Maximum capacity 2x 12 V 7 AH
Both fitted internally
Min. Voltage 21,7V DC (Vb min)
Max. Voltage 27,2V DC
Maximum Internal Resistance 1 Ohm
2.3 Amps @ 28,5V DC nominal, comprising:
1.4 Amp used for internal electronic circuits and external ancillary
circuits: A maximum of 150 mA is available for each loop power.
Maximum of 65 mA for internal electronic circuits.
300 mA for auxiliary power supply outputs.
Under alarm conditions a maximum of 500 mA current available for
conventional sounder circuits.
POWER BUDGET QUIESCENT CONDITION
a - 60 mA internal circuits
b - 300 mA auxiliary supply outputs
c - 600 mA (4x150 mA) for analogue loop power
d - 1 Amp for battery charger
500 mA for conventional sounder circuits +a+b+c
400 mV peak-to-peak @ Maximum output loading
Max. number of devices per loop: 188
(125 individually addressed + 63 auxiliary)
Supports analogue addressable devices over a 2 wire combined power and digital data
transmission loop
Maximum Loop current :150 mA
Loop short circuit (trip) current: 900 mA
Maximum recommended loop length is 1.2 km with 1.5 mm² wire cross-section
Maximum cable capacitance 120 pF/m
Minimum cable cross-section: 0.5 mm²
Maximum cable cross-section: 2.5 mm²
CONVENTIONAL SOUNDER CIRCUITS
2 individually programmed. Both circuits current limited and monitored for both open and
short circuit fault conditions.
10k Ohm E.O.L. resistors are used.
Maximum current rating per circuit 500 mA.
2 voltage free changeover relay outputs used for fire indication.
1 voltage free relay output for fault indication. Remains energized (normally closed) under
normal condition and de-energized when any fault condition appears on the system.
Maximum current rating for each relay contact 2A @ 30V DC resistive / 0.5 @ 120V AC
resistive.
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