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PV module
Part of a PV generator; converts PV energy into electrical energy.
RJ45
Abbreviation for standardized eight-pole electrical connector connection. RJ stands for Registered
Jack (standardized socket).
RS485 (EIA485)
Dierential voltage interface on which the genuine signal is transmitted on one core and the ne-
gated (or negative) signal on the other core.
Separate grid system
Energy supply equipment which is completely independent of an interconnected grid.
Solar inverter
is an electrical device which converts DC direct voltage into AC voltage and/or direct current into
alternating current.
String
Designates a group of electrical PV modules switched in series.
String solar inverter (solar inverter concept)
The PV generator is divided up into individual strings which feed into the grid over their own string
solar inverters in each case. In this way, the installation is considerably facilitated and the gain de-
crease, which can arise from the installation or from dierent shading conditions of the PV modules,
is considerably reduced.
UL
Stands for Underwriters Laboratory, a non-prot organization that sets standards for dierent prod-
uct categories and tests products to make sure they meet the standards.
VOC
Open Circuit Voltage
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