Y1-03-0212-1 Rev D 58
9.1.2 RM GMDSS Compact-Console Area A3 with 250 W MF/HF
GMDSS Reserve Battery Calculation ( 24 V DC ) for Raytheon Marine GmbH GMDSS
Compact-Console Area A3 with 250 W MF/HF
According to IMO Regulation COMSAR/Circ.16 4. March 1998
A: with Emergency Generator (SOLAS IV 13.2 )
The GMDSS equipment shall be able to operate one (1) hour on reserve power
with 50% of time in transmission mode and 50% in receiving mode.
B: without Emergency Generator (SOLAS IV 13.2 )
The GMDSS equipment shall be able to operate six (6) hours on reserve power
with 50% of time in transmission mode and 50 % of receiving mode.
Calculation:
Case A:
1h x ( 0.5 I TX + I RX + I Add ) x 1.4 = 41.44 Ah
recommend battery capacity is 86 Ah
Charger:
I Charg x 0.1 I Batt/h = 8.6 A
recommend charger is type 20 A
Case B:
6h x ( 0.5 I TX + I RX + I Add ) x 1.4 = 248.66 Ah
The battery calculation should not be used for uninterruptible power supply (UPS)
configuration.
9.1.3 RM GMDSS Compact-Console Area A3 with 400 W MF/HF
GMDSS Reserve Battery Calculation (24 V DC) for Raytheon Marine GmbH GMDSS
Compact-Console Area A3 with 400 W MF/HF
According to IMO Regulation COMSAR/Circ.16 4. March 1998
A: with Emergency Generator ( SOLAS IV 13.2 )
The GMDSS equipment shall be able to operate one (1) hour on reserve power
With 50% of time in transmission mode and 50% in receiving mode.
B: without Emergency Generator ( SOLAS IV 13.2 )
The GMDSS equipment shall be able to operate six (6) hours on reserve power
with 50% of time in transmission mode and 50 % of receiving mode.
Calculation:
