Ingecon SUN 125 TL U 208 Outdoor, Руководство по установке, Страница: 51 / 88

ABB2000IKI01 51
Installation manual Ingeteam
5.5.12. Grid connection
The cables for connecting the unit to the grid enter through conduits at the base of the cabinet. They must withstand
at least the phase voltage and 1000 V between a phase and ground.
These units have three strips (phases) and a terminal (N) for connection to the grid. The maximum admissible gauge
is two 0.19 in² (127 mm²) cables per pole.
If the inverter and the grid connection point are far enough apart to require the use of longer cables, an external
distribution box must be used close to the investor to make this connection.
The cable gauge must be suitable in each case for the power rating of the unit and site conditions.
Protections for the connection of inverters to the electrical grid can withstand a short-circuit current of up to 65 kA,
depending on the model.
Before any handling, check that there is no electrical hazard in the voltage input from the grid.
When checking that there is no voltage, wearing dielectric gloves and safety goggles approved for
electrical hazards is required.
L1 L2 L3 N
To avoid arcing, once the wires are connecting to the strips, check the safety clearances between live parts on each
strip or any other metal point on the unit. We recommend a clearance of 0.79 in (20 mm).
After working on the terminals the polycarbonate guard must be put back into place.
Depending on the type of transformer connection (star or delta), the following points should be borne in mind.