Danger
Warning
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Electrical connection 6
6.1 Precautions
High voltages in the conductive parts of a running inverter may
cause electric shocks. Therefore, ensure that the inverter is
disconnected from voltage sources and is not powered on before
connecting cables.
Static electricity may damage the electronic components of the
inverter. Anti-static measures should be taken during the
replacement or installation of the inverter.
Moisture and dust penetration can damage the inverter
Ø Make sure that the waterproof cable gland is firmly tightened.
Ø If the cable connector is not installed correctly, the inverter
may be damaged due to the penetration of moisture and dust. In
this case, all warranties shall be void.
Note
6.2 AC side wiring
Before connecting cables, ensure that the DC switch of the inverter
is off and disconnect the AC circuit breaker. Otherwise, high
voltages may cause electric shocks, resulting in serious injury or
death from inverter in operation.
Ø In PV system with multiple inverters, protect each inverter with
a separate circuit breaker.
Ø Do not use the single-core wire to connect the output terminal
of the inverter.
Ø Do not use aluminum wires as the output cables.
Ø Ensure that the AC output cable is securely connected before
powering on the inverter. Failure to follow the safety precautions
may cause device and property damage, which is beyond the
warranty scope.
Moisture and dust penetration can damage the inverter.
Ø Make sure the cable connector is securely tightened.
Ø If the cable connector is not installed correctly, the inverter
may be damaged by moisture and dust. In this case, all warranty
claims shall be void.
Danger
Warning
Note
Fig 5.9 Installing the inverter
You must install a separate three phase circuit-breaker or other load disconnection unit
for each inverter in order to ensure that the inverter can be safely disconnected under
load.
The recommended AC circuit breaker specifications are shown below:
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