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Personnel working on electrical equipment shall be responsible
for personnel and property safety!
Cut off
Before starting any work, disconnect all cables that supply
power to the workplace. Note that no voltage does not mean
that the cable is disconnected.
Prevent reconnection
Prevent the system from being reconnected by labeling or
closing / blocking the work area. If it is accidentally
reconnected, it may cause serious accidents.
Check that there is no voltage in the system
With the voltage tester, make sure there is no voltage in the
system. Check all terminals to ensure that there is no voltage
on each conductor of the system.
Cover neighboring live components and prevent others
from approaching
Cover all live system components that may cause injury during
operation. Make sure the danger area is clearly marked.
1.6. System selection
Maximum PV voltage
When selecting the specifications of photovoltaic system, it
must be ensured that the open circuit voltage of PV string will
not exceed the maximum input voltage 550VDC of the inverter.
The maximum open circuit voltage of PV series during parallel
or series operation is 550 v. Voltage above this level may cause
permanent damage to the inverter.
Maximum current of each DC terminal
The maximum current of each PV input terminal of this inverter
is 12A, which may cause permanent damage to the inverter.
The selection output of PV string should be based on the principle that investment capital can
be used optimally, rather than on the expected energy output of the system each year. This
optimization depends on local climate conditions and should be considered in all cases.
The inverter is equipped with input and output power limiting devices, which can
automatically maintain the power at a safe level for the inverter. The limit range mainly
depends on the internal and ambient temperature. The system constantly calculates the
limits, which always allows the system to produce as much energy as possible.
Please use the tools provided by KOYOE to calculate the configuration of PV system.
