Installation Manual Nauticast V1.0.3
Installation Manual Nauticast V1.0.3
Installation Manual Nauticast V1.0.3
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Sample for battery Calculation<br />
GMDSS Reserve Battery Calculation ( 24 V DC )<br />
According to IMO Regulation COMSAR/Circ.16 4. March 1998<br />
A: with Emergency Generator ( SOLAS IV 13.2 )<br />
The GMDSS equipment shall be able to operate one (1) hour on reserve power<br />
With 50% of time in transmission mode and 50% in receiving mode.<br />
B: without Emergency Generator ( SOLAS IV 13.2 )<br />
The GMDSS equipment shall be able to operate six (6) hours on reserve power<br />
with 50% of time in transmission mode and 50 % of receiving mode.<br />
Equipment Type Transmitting Receiving Additional<br />
MF/HF STR 2000 18,75 A 4 A incl.DSC<br />
Inmarsat C STR 1500 CN 5 A 1,8 A incl.EGC<br />
VHF 1 with DSC VHF1000DSC 6,5 A 0,65 A incl.DSC<br />
VHF 2 with DSC VHF1000DSC 6,5 A 0,65 A incl.DSC<br />
AIS AIS - Unit 5,0 A 1,0A<br />
Emergency Light 2,5 A<br />
Total 41,75 A 8,1 A 2.5 A<br />
Calculation:<br />
Case A:<br />
1h x ( 0.5 I TX + I RX + I Add ) x 1.4 = 44.06 Ah<br />
recommend battery capacity is 86 Ah<br />
Charger:<br />
I Charg x 0.1 I Batt/h = 8.6 A<br />
recommend charger is type 20 A<br />
Case B:<br />
6h x ( 0.5 I TX + I RX + I Add ) x 1.4 = 264.39 Ah<br />
The battery calculation should not be used for uninterruptible power supply (UPS)<br />
configuration