Fronius 10.0-3 208-240, Installation Instructions Manual

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Connecting the inverter to the public grid (AC side)
Safety
WARNING!
Danger from grid voltage and DC voltage from solar modules that are exposed to
light.
An electric shock can be fatal.
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Prior to all connection work, disconnect the AC and DC supply to the inverter.
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The DC main switch is used only to switch off power to the power stage set. When
the DC main switch is turned off, the connection area is still energized.
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Maintenance and service work on the inverter power stage set should only be car-
ried out by Fronius-trained service technicians.
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All maintenance and service work should only be carried out when the inverter and
the mounting bracket have been disconnected from each other.
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The inverter must only be disconnected from the mounting bracket after being dis-
connected from the mains power.
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Only an authorized electrician is permitted to connect this inverter to the public grid.
WARNING!
Inadequately sized electrical components can cause serious injury and damage to
property.
An electric shock can be fatal.
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All electrical connections must be made in accordance with the national standard
(e.g., for the US National Electrical Code, ANSI/NFPA 70) and any other regulations
applicable to the installation site.
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Use min. 194 °F (90 °C) copper wire for all grounding wires (see NEC table
250.122).
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For all AC/DC wires, use a minimum of 167 °F (75 °C).
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Voltage drop and other considerations, such as improving power quality, may mean
larger cable cross sections need to be used.
WARNING!
Danger from work that is not carried out properly
This can result in damage to property and severe personal injury.
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The surge protection device should only be installed and connected by licensed
electricians.
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Observe the safety rules!
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Prior to all installation and connection work, disconnect the AC and DC supply to the
inverter.
CAUTION!
Danger due to improperly connected terminals.
This may result in thermal damage to the inverter, which in turn may lead to fires.
▶
When connecting the AC and DC cables, make sure that all terminals are tightened
securely using the proper torque.
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