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5.2 The electrical connection diagram overview
Inverter electrical connection includes PV side electrical connections, AC side
electrical connections and communication cable electrical connection.
No.
Item
Remarks
A
DC circuit breaker
Used as a protective device during electrical connection. User
must equips this device according to the maximum input voltage
and current. You must choose the external DC circuit breaker
whose rated current is 40A and the max breaking capacity can
reach more than 1kA.
B PV
arrays
There are three pairs of input terminals in one MPPT channel for
the inverter. The allowable maximum open-circuit voltage of PV
arrays is 520V.
And the allowable maximum short-circuit currents
of the connected modules is 22A.
C
Remote PC
User equips this device to monitor the state of the inverter.
D
AC circuit breaker
Used as a protective device during electrical connection. You
must choose the external AC circuit breaker whose rated current
is 40A and the max breaking capacity can reach more than 2kA.
The PE cable should be connected reliably to the earth.
E
Grid
Rated voltage of each phase of the utility grid is 230V.
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