5. Electrical Connections
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5.1 The Overview of Electrical Connection
The Scalable All in One has two solar energy inputs (PV1, PV2). 3.3 kW (per string) is the
maximum output for each PV input. The Grid of All in One is connected to the Grid. The Load
of All in One is connected to the Home Load. Between the Home Load and the Grid, the
Digital Energy Meter is placed for power metering. The AC circuit breaker and DC Isolator in
the distribution box are installed between the All in One for safety reasons.
[Figure 5-1: Electrical connections]
As shown in the [Figure 5-2], the Scalable All in One uses the two independent channels of
the PV Input ({PV1+, PV1-}, {PV2+, PV2-}). They are used independently for running the
maximum power from the sources of PV1 and PV2. Two channels are recommended for
independent use for the two PV Inputs. Make sure not to connect one PV string in parallel
with the two independent PV inputs (PV1, PV2). (Refer to Scalable All in One Solar energy
input connection in the [Figure 5-2]).
A PV string must not be commonly connected to the two input terminals of the All in One
system. That is, make sure not to connect the split wiring from one PV string output with the
two independent PV inputs (PV1+, PV1- and PV2+, PV2-). (Refer to the PV String connection
method in the [Figure 5-2]).
When want connect the two PV input with one PV Module, should be carried out by
qualified personnel only.
※
PV modules shall have an IEC61730 Application Class A rating or equivalent.
