Samlexpower PST-1000-12 Owner's manual - Section 7 |
18 | SAMLEX AMERICA INC.
SECTION 7 |
General Information on Batteries for
Powering Inverters
5BCMFCFMPXHJWFTTPNFFYBNQMFTPG$3BUFTQFDJåDBUJPOTBOEBQQMJDBUJPOT
TABLE 7.2: DISCHARGE CURRENT RATES - “C-RATES”
Hours of discharge time “T”
till the “End Point Voltage”
C-Rate Discharge Current in Amps
Example of C-Rate
Discharge Currents
for 100 Ah battery
Fraction
Decimal
Subscript
)ST
$
$
$
"
)ST
$
$
$
"
)ST
$
$
$
"
)ST
614BQQMJDBUJPO
$
$
$
"
)ST
5FMFDPNBQQMJDBUJPO
$
$
$
"
)ST
"VUPNPUJWFBQQMJDBUJPO
$
$
$
"
)ST
$
$
$
"
NOTE: 8IFOBCBUUFSZJTEJTDIBSHFEPWFSBTIPSUFSUJNFJUTTQFDJåFEi$3BUFwEJT-
DIBSHFDVSSFOUXJMMCFIJHIFS'PSFYBNQMFUIFi$3BUFwEJTDIBSHFDVSSFOUBU)PVS
EJTDIBSHFQFSJPEJF$$$"NQTXJMMCFUJNFTIJHIFSUIBOUIFi$3BUFw
EJTDIBSHFDVSSFOUBU)PVSEJTDIBSHFQFSJPEJF$$$"NQT
.
Charging / Discharging Curves
'JHQBHFTIPXTUIFDIBSHJOHBOEEJTDIBSHJOHDIBSBDUFSJTUJDTPGBUZQJDBMDFMM
7-FBE"DJECBUUFSZBUFMFDUSPMZUFUFNQFSBUVSFPG¡'¡$5IFDVSWFTTIPXUIF
4UBUFPG$IBSHF9BYJTWFSTVTUFSNJOBMWPMUBHF:BYJTEVSJOHDIBSHJOHBOEEJTDIBSH-
JOHBUEJGGFSFOU$3BUFT'PS7CBUUFSZNVMUJQMZWPMUBHFPO:BYJTCZGPS7CBUUFSZ
NVMUJQMZWPMUBHFPO:BYJTCZ(Please note that X-axis shows % State of Charge. State
of Discharge will be = 100% - % State of Charge). These curves will be referred to in
TVCTFRVFOUFYQMBOBUJPOT
Reduction in Usable Capacity at Higher Discharge Rates –
Typical in Inverter Application
"TTUBUFEBCPWFUIFSBUFEDBQBDJUZPGUIFCBUUFSZJO"IJTOPSNBMMZBQQMJDBCMFBUBEJT-
DIBSHFSBUFPG)PVST"TUIFEJTDIBSHFSBUFJTJODSFBTFEBTJODBTFTXIFSFUIFJOWFSUFST
BSFESJWJOHIJHIFSDBQBDJUZMPBETUIFVTBCMFDBQBDJUZSFEVDFTEVFUPi1FVLFSU&GGFDUw
5IJTSFMBUJPOTIJQJTOPUMJOFBSCVUJTNPSFPSMFTTBDDPSEJOHUPUIF5BCMFQBHF