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SUNSYS pro - SUNSYS station
- Ref.: IOMSUNMOXX00-GB 00
ENGLISH
5. INSTALLATION
DANGER!
Risk of electric shock from live device parts!
In the event of system maintenance, carry out the following steps beforehand:
• Disconnect the photovoltaic system.
• Make sure the photovoltaic system cannot be restarted.
• Make sure the mains electricity supply has been disconnected.
• Earth the device units and short-circuit them.
• Cover or separate the nearby live device units.
• Before working on the circuits upstream make sure the inverter is disconnected by opening the DC disconnection switches.
DANGER!
Risk of electric shock from live device parts!
SUNSYS pro
and
SUNSYS station
can be connected to a maximum of three power supplies:
1 DC cable - Photovoltaic generator power supply (separated for the three modules or shared)
2 AC cable - Power from the mains network, supplied by the electricity company
3 AC cable - Auxiliary power supply
• Before carrying out any work, make sure the electricity supply has been disconnected.
• All DC power supplies should be considered as part of the same circuit, even in the configuration with centralised multi-
string inverter. Before carrying out any work, make sure all electricity supplies have been disconnected.
DANGER!
Risk of electric shock from live device parts!
The intermediate inverter circuit may be live even after it has been deactivated.
• Wait 5 minutes for the power to disperse and make sure that there is none remaining.
DANGER!
Risk of electric shock from live device parts!
The photovoltaic modules are live as soon as they are exposed to sunlight.
• Take suitable measures and make sure there is no power remaining.
SUNSYS pro
and
SUNSYS station
are designed for instant application. Only the AC and DC cables coming from outside
must be installed and the inverter configured.
5.1. ELECTRICAL INSTALLATION REQUIREMENTS
The installation and system must comply with existing national legislation.
The fixed power distribution unit must include protection and disconnection for the main AC network for the auxiliary network.
The following table indicates the sizing of AC protection devices that will ensure correct installation.
Inverter size
Network cable cross-section
Main AC (mm
2
)
(1)
Magneto-thermal switch
protecting the main AC
network
(2)
Differential AC protection
(optional)
33 kW
min. 16 / max. 120
63 A type D
0.3 A type AC or A
66 kW
min. 35 / max. 120
125 A type D
0.3 A type AC or A
100 kW
min. 70 / max. 120
200 A type D
0.3 A type AC or A
(1) Determined by the size of the terminals
(2) Recommended magneto-thermal switch: three poles with intervention threshold
≥
10 In
5 min
