Installation requirements
SMA
Technologie AG
Page 16
SB1100LV-11:SE2006
Installation Guide
Rating for a line circuit breaker in a photovoltaic electrical power unit
operated in parallel with the low-voltage grid
Various factors should be taken into account when selecting line circuit breakers. These
include, for example:
•
The type of cable used (conductor material and insulation)
•
Ambient temperatures affect the cables (higher temperatures result in a reduced
maximum current load)
•
Method of routing the cable (reduces the ampacity of the conductor)
•
Bundling cables together (reduces the ampacity of the conductor)
•
Loop impedance [Z] (in the event of a body contact this limits the current that can
flow and therefore determines the response behavior of the circuit breaker)
•
Sufficient distance between the circuit breakers so as to avoid undue heating (heat
can trigger the circuit breakers early).
•
Selectivity
•
Protection class of the connected load (VDE 0100, part 410, Protection against
electric shock)
The following standards should be followed in all cases:
•
DIN VDE 0298-4
(Cable routing and current-carrying capacity)
•
DIN VDE 0100; part 430 (Protective measures; protection of cable and cords
against overcurrent)
•
DIN VDE 0100; part 410 (Protective measures; protection against electric
shock)
Attention!
We recommend using a 16 A line circuit
breaker to protect the power circuit. No
loads should be connected to this power
circuit.
Please pay attention to chapter 11 "Rating for a line circuit breaker" (Page 51).
Содержание Sunny Boy SB 1100LV
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Страница 6: ...Explanation of the symbols used SMA Technologie AG Page 6 SB1100LV 11 SE2006 Installation Guide ...
Страница 8: ...Foreword SMA Technologie AG Page 8 SB1100LV 11 SE2006 Installation Guide ...
Страница 10: ...Safety instructions SMA Technologie AG Page 10 SB1100LV 11 SE2006 Installation Guide ...
Страница 32: ...Installation SMA Technologie AG Page 32 SB1100LV 11 SE2006 Installation Guide ...
Страница 34: ...Opening and closing the Sunny Boy SMA Technologie AG Page 34 SB1100LV 11 SE2006 Installation Guide ...
Страница 44: ...Technical data SMA Technologie AG Page 44 SB1100LV 11 SE2006 Installation Guide ...
Страница 50: ...Replacing the varistors SMA Technologie AG Page 50 SB1100LV 11 SE2006 Installation Guide ...
Страница 54: ...Rating for a line circuit breaker SMA Technologie AG Page 54 SB1100LV 11 SE2006 Installation Guide ...
Страница 58: ...The communications interface SMA Technologie AG Page 58 SB1100LV 11 SE2006 Installation Guide ...
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