User Manual
2
1.3 Installation
DANGER
1.
Before operating the internals of the string inverter, it must be confirmed that the input switch DC Switch of
the string inverter and the circuit breaker corresponding to the AC side of the inverter are in the off state,
and the string inverter is guaranteed. The housing is reliably grounded.
2.
The string inverter must be grounded according to the specifications. The size of the grounding conductor
must meet the requirements of safety regulations to ensure the safety of personnel.
3.
Do NOT store flammable and explosive substances around the inverter.
CAUTION
1.
During installation, it is necessary to ensure that the string inverter installation environment is well
ventilated and heat-dissipating, and should not be directly exposed to sunlight.
2.
The fixing of the string inverter is recommended by two people working together to avoid mechanical
damage. During the installation process, safety measures should be taken to prevent bruises.
3.
During installation and maintenance, it is necessary to prevent liquid, dust or debris from entering the
inside of the string inverter. Conductive liquids and debris may cause internal short circuit of the string
inverter, resulting in equipment damage.
4.
When connecting the wiring of the external cable to the string inverter, the installation torque of the power
cable must be ensured. Excessive torque may cause fatigue damage of the screw. Too small torque may
cause the contact resistance to become large, resulting in overheating.
5.
The power cable terminals connected to the string inverter must comply with national standards. If the
terminals are not in accordance with the standard, the power cable may be overheated. In severe cases, a
fire may occur.
6.
The installation site must meet the requirements of the operating environment. Please refer to “
2.10
Environmental Requirements
”.
1.4 Operating
DANGER
1.
During the operation of the string inverter, it is necessary to ensure that the door plate of the string inverter
is locked to prevent personal injury such as electric shock, and to prevent salt, moisture, dust or other
conductive substances in the air from entering the string inverter.
2.
During the operation of the string inverter, it is strictly prohibited that the surrounding environment is
corrosive.
3.
It is forbidden to place inflammable, explosive and other articles within 2 meters of string inverter.
4.
During the operation of the string inverter, it is forbidden to contact the internal boards, devices, cables and
terminals of the string inverter, and to plug and unplug the external terminals.
5.
In case of failure, abnormal smell and sound of the string inverter, please immediately disconnect the input
switch DC switch of the string inverter and the corresponding circuit breaker of the grid connection cabinet
at the AC side of the inverter.
CAUTION
1.
The string inverter is allowed to be powered up after all installation work is completed and the cable is not
connected correctly.
2.
It is forbidden to perform any insulation resistance test or withstand voltage test on the string inverter. The
wrong withstand voltage test will damage the string inverter.
3.
When performing insulation withstand voltage test on the external equipment of the string inverter, the
wiring of the string inverter and external equipment must be disconnected.
