SMA SC 250U - Manual (Page 40)

Appendix - Glossary SMA America, LLC
40 SCUS-BE-BUS120514 User Manual
8 Appendix - Glossary
AC
Abbreviation for "Alternating Current"
ANSI
Abbreviation for American National Standards Institute
BFR
Abbreviation for operation control unit
CANDI
Fimware version of internal CAN communication
CEC
Abbreviation for California Energy Commission
Crossover cable
A crossover cable is needed, for example, to connect two computers directly with one another. A
crossover cable is an 8-wire twisted pair cable with an RJ45 plug on each end. In one of the plugs
certain wires are interchanged.
DC
Abbreviation for "Direct Current"
Derating
A controlled reduction in performance, usually dependent on component temperatures. Compared
with the normal process of completely shutting down the device, the negative effect on the external
power network is reduced with derating.
DSP
Abbreviation for Digital Signal Processor
Energy
The energy is measured in Wh (watt hours), kWh (kilowatt hours) or MWh (megawatt hours). The
energy is the power calculated over time. If, for example, your Sunny Central operates at a constant
output of 150 kW for half an hour and then at a constant output of 250 kW for another half hour, it
has fed 200 kWh of energy into the gird within that hour.
Ethernet
Ethernet is a cable-based data network technology for local data networks. It allows data exchange
in the form of data frames between all devices connected to a local network (e.g. computer, printer).
Fast Ethernet
Fast Ethernet is a further development of Ethernet which works at 100 Mbit/s. Also see "Ethernet".