20
SUNSYS pro - SUNSYS station
- Ref.: IOMSUNMOXX00-GB 00
20
SUNSYS pro - SUNSYS station
- Ref.: IOMSUNMOXX00-GB 00
5. INSTALLATION
The auxiliary power supply socket must be protected with a 16 A magneto-thermal switch, curve C, and from category 2 over-
voltages or greater.
The following table indicates the sizing of the wires originating from the photovoltaic generator for correct installation.
Inverter size
PV generator cable cross-section in case of
shared DC inputs (mm
2
)
(1)
PV generator cable cross-section in case of
separate DC inputs (mm
2
)
(2)
33 kW
min. 25 / max. 120 (M8)
N.A.
66 kW
min. 50 / max. 120 (M8)
min. 25 / max. 120 (M8)
100 kW
min. 95 / max. 120 (M8)
min. 25 / max. 120 (M8)
(1) Determined by the size of the terminals
(2) Up to 2 cables can also be connected at the same point, max. 2x50 mm
2
WARNING!
The inverter is designed for transient over-voltages in category II installations for AC terminals. If the inverter may be
subjected to transient over-voltages in category III installations, protective SPDs must be provided for the AC power supply
network. The SPDO option, designed to protect against category III over-voltages, can be fitted directly to the inverter. If it
is used, the distance between the inverter and type I centralised SPD protection must be
≥
15 m.
WARNING!
The inverter is designed for transient over-voltages in category II installations for DC terminals. If the inverter may be subject
to transient over-voltages in category III installations, or if the distance from the SPDs in the photovoltaic field is excessive,
protective SPDs must be fitted near the inverter. The SPDI option, designed to protect against over-voltages in photovoltaic
applications, can be fitted directly to the inverter.
NOTE
DC inputs do not require protection against over-voltages, if fewer than three inverter modules are connected to the same
photovoltaic generator.
NOTE
Functional panel earthing (optional): for correct operation, some types of photovoltaic panel require one of the two poles to
be earthed. The special optional kit (GND) can be used to earth the positive or negative pole of the photovoltaic generator.
For further details and instructions, please refer to the kit (GND) installation and operating manual.
IT SYSTEM:
With the photovoltaic panels isolated from earth, the circuit consisting of the panels and the inverter is configured like an IT
system. We therefore recommend a permanent isolation controller is used in the system or built into the inverter (IMD option).
