Connecting The Inverter To The Public Grid (Ac Side); Safety - Fronius Primo 3.8-1 208-240 Installation Instructions Manual

Connecting the inverter to the public grid (AC
side)

Safety

Danger from grid voltage and DC voltage from solar modules that are exposed
to light.
An electric shock can be fatal.
▶
▶
▶
▶
▶
▶
Inadequately sized electrical components can cause serious injury and damage
to property.
An electric shock can be fatal.
▶
▶
▶
▶
▶
▶
Danger from work that is not carried out properly
This can result in severe personal injury and damage to property.
▶
▶
▶
WARNING!
Prior to any connection work, ensure that the inverter is de-energized on the
AC side and the DC side.
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.
Maintenance and service work on the inverter power stage set should only be
carried out by Fronius-trained service technicians.
All maintenance and service work should only be carried out when the invert-
er and the mounting bracket have been disconnected from each other.
The inverter must only be disconnected from the mounting bracket after be-
ing disconnected from the mains power.
Only an authorized electrician is permitted to connect this inverter to the
public grid.
WARNING!
All electrical connections must be established in accordance with the nation-
al standard (e.g., for the US National Electrical Code, ANSI/NFPA 70) and
any other regulations applicable to the installation site.
Installations in Canada must be carried out in accordance with applicable
Canadian standards.
Use min. 167°F (75°C) copper wire for all grounding wires (see NEC table
250.122).
Use for all AC/DC wires, min. 167°F (75°C).
Voltage drop and other considerations, such as improving power quality, may
mean larger cable cross sections need to be used.
Use only solid or stranded wire. Do not use fine stranded wire.
WARNING!
The surge protection device should only be installed and connected by li-
censed electricians.
Observe the safety rules!
Prior to any installation and connection work, ensure that the inverter is de-
energized on the AC side and the DC side.
25