Three-phase grid connection

PE

N

L3

L2

L1

25 A

 

 

 

 

 

L1

 

 

 

 

 

L2

 

 

 

 

 

L3

 

 

 

 

 

N

 

 

 

 

 

PE

Always use sufficiently dimensioned cable cross-sections to prevent a significant incre- ase of the grid impedance between the service distribution system and the Solar Inverter. The capacity of the AC terminals is

0.5mm2 to 6 mm2 for rigid cables, and 0.5 mm2 to 10 mm2 for flexible cables. If the grid impedance is high, i. e. due to relati- vely long or thin cables, the voltage at the grid terminal is increased during injection. If the terminal voltage exceeds the admissi- ble value, the Solar Inverter is disconnected from the grid. If the power grid is weak and the PV output is high, individual Solar

Inverters may repeatedly switch on and off.

Carry out the following steps carefully:

·Prior to inserting the power cable into the device, make sure it is de-energised.

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Sunway NT 10000 user manual 25 a, Three-phase grid connection