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5
SPECIFICATIONS
•
Ambient temperature: - 5 ° C ... +40 °C
•
Storage temperature: - 10°C ... +50°C
•
Relative humidity: 10 % ... 95 % (without condensation)
5.1 Earthing
The earthling system must be performed in conformity with CEI and ISPELS rules or rules valid in the country
where the panel is installed.
In any case, must have a resistance lower than 10 Ohm (measured at the well with disconnected users). This
complies the CEI 68-12 rule for TN installations.
The earth connection to the control unit is compulsory and it must be performed on the CNAL terminal block.
(refer to basic board topography).
5.2 Main power supply
The control unit is powered by the mains voltage and, in case of mains breakdown it can continue to normally
operate due to the re-chargeable battery contained in the same control unit.
The required features for the mains supply are:
•
Voltage: 100 ... 120 V AC / 200 ... 240 V AC
•
Frequency: 50 / 60 Hz
•
Current: max. 3,0 A @ 110 V AC max 1,7 A @ 230 V AC
Particular care must be taken when the installation is performed near powerful electromagnetic
sources (ex. repeaters, radio relays, motors, etc.).
5.3 Power supply
The internal power supply has the following output: 28,8
(Power supply for control unit, user output, external load power supply).
Output: 28 V DC (+3% +/ -18%) 1 A, on board to power external loads.
5.4 Battery charger section
•
Output voltage = 26,5
•
Output current = max. 0,79 A ~ 500 m Vpp
•
Number of batteries that can be connected = 2 x 12 V / 7 Ah, max. 18 Ah
•
The battery charger section has the following signaling thresholds
Exhausted battery threshold = 21,5 V DC
Re-charge Fault threshold = 3,4 V DC (voltage difference between the two batteries)
Battery release threshold = 19,5 V DC
Threshold of internal battery resistance = 0,6
5.4.1
Batteries
Average duration declared by the manufacturer is 3 ... 5 years at an ambient temperature of 20 °C.
Life decreases in accordance with a higher operating temperature and possible discharging-
recharging cycles.
Recommended Batteries:
Capacity 17 Ah
Battery Yuasa type NP17-12IFR with bolt connector.
Capacity (20 h): 12 V / 17 Ah
Dimensions (W x D x H): 181 x 77 x 167 mm.
M-167.1-MA2000-EN / 06.2022
... 28,5 Vcc (temperature compensation)
Vcc
V DC ... 29 V DC /
Ohm
2,70 A ripple max. 500 m Vpp
MA-2000
15
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