SMA
Technologie AG
Glossary
Technical Description
SI5048-11:EE4206
Seite 163
Describes the current amount of charge that can be drawn from the battery, in percent
of the nominal capacity (100 % = battery full, 0 % = battery empty).
Charge mode
See Battery charging mode
C-rate
The nominal capacity specification is always provided with the discharge time on which
the capacity is based. The nominal capacity is the product of the constant charging cur-
rent IN and the discharge time tN, that passes between commencement of discharging
the fully charged battery until the final discharge voltage VS is reached. In permanently
on-site batteries, the C
10
capacity is usually specified. i.e. a battery with C
10
= 200 Ah
can be discharged for 10 hours at a nominal current of 0.1 × C
10
= I
10
= 20 A.
DC
Abbreviation for "Direct Current"
Derating
A controlled reduction in performance, usually dependent on component temperatures.
Derating is used instead of performing a complete shutdown of the system.
DSP
Abbreviation for Digital Signal Processor. A DSP is a microprocessor chip especially
developed for digital signal processing and control.
Electrolyte
Allows the conduction of ions within a battery. In lead acid batteries, the electrolyte is
diluted sulfuric acid and is also a reactant in the electrochemical reaction. Nickel/Cad-
mium batteries use an alkaline electrolyte (potassium hydroxide).
EPROM
See Flash EEPROM
Equalize charge
Equalize charge: Allows multiple series-connected battery cells to be charged to a uni-
fied charge level of 95 – 100 %. Without regular equalization charging, the charge
states of the various cells slowly drift apart, which can lead to premature battery bank
failure.
Firmware
Firmware is software that is stored in a chip in various electronic devices, such as Sunny
Island, hard disk recorders, DVD burners and players, newer television sets, household
appliances and computers - in contrast to software that is stored on a hard drive, CD-
ROM or other media. These days, firmware is usually stored in Flash memory or an EE-
PROM.
Summary of Contents for Sunny Island 5048
Page 22: ...The Sunny Island 5048 SMA Technologie AG Page 22 SI5048 11 EE4206 Technical Description...
Page 26: ...Safety Instructions SMA Technologie AG Page 26 SI5048 11 EE4206 Technical Description...
Page 94: ...Battery Management SMA Technologie AG Page 94 SI5048 11 EE4206 Technical Description...
Page 114: ...Connecting External Sources SMA Technologie AG Page 114 SI5048 11 EE4206 Technical Description...
Page 160: ...Contact SMA Technologie AG Page 160 SI5048 11 EE4206 Technical Description...
Page 169: ...SMA Technologie AG Glossary Technical Description SI5048 11 EE4206 Seite 169...
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