Installation Manual
30
The open-circuit voltage of the PV array cannot exceed the maximum DC input
voltage. Otherwise, the inverter may be damaged.
When finding a grounding fault of the PV module, remove the fault before
performing DC cable connection.
Perform cable connections strictly according to the wiring identifications inside
the device.
Observe all safety rules required by the PV module manufactures.
Start the DC side cable connection only after all checking and measurement meet the
requirements.
7.8.2
Cable Connection Area
The output of the PV array can be directly input to the DC input side of the inverter via the
combiner box.
There are 16 input circuit breakers on the DC side of the inverter (the input number can be
customized according to requirements), and each circuit breaker can be connected to an
inverter DC+ and DC-. There are 16 round holes on the inverter DC+ and DC- respectively
with cross-sectional area of
Φ
13. It is recommended to connect 16 cables with
cross-sectional areas of 70mm
2
to each of DC+ and DC-.
DC cable connection area is shown in the figure below.
DC+ DC- DC+ DC- DC+ DC-
DC+ DC- DC+ DC- DC+ DC-
Fig. 7-2
DC cable connection area
