Connecting The Inverter To The Public Grid (Ac Side); Safety; Monitoring The Grid - Fronius Primo 3.0-1 Installation Instructions Manual

Connecting the inverter to the public grid (AC
side)

Safety

Incorrect operation or poorly executed work can cause serious injury or dam-
age.
Only qualified staff are authorised to commission your inverter and only within
the scope of the respective technical regulations. Read the Installation and Op-
erating Instructions before installing and commissioning the equipment.
An electric shock can be fatal.
Danger due to grid voltage and DC voltage from solar modules that are exposed
to light.
▶
▶
An electric shock can be fatal.
Danger due to grid voltage and DC voltage from solar modules.
▶
▶
▶
▶
Risk of damage to the inverter as the result of incorrectly tightened terminals.
Incorrectly tightened terminals can cause heat damage to the inverter that may
result in a fire. When connecting AC and DC cables, ensure that all the terminals
are tightened to the specified torque.
IMPORTANT! To ensure a proper ground connection, all three PE grounding ter-
minals must be tightened to the specified torque when the inverter is installed.
Monitoring the To provide the best possible grid monitoring, the resistance in the leads to the
grid AC-side terminals should be as low as possible.
WARNING!
WARNING!
Ensure that both the AC side and the DC side of the inverter are de-ener-
gised before carrying out any connection work.
Only an authorised electrical engineer is permitted to connect this equip-
ment to the public grid.
WARNING!
The DC main switch is only to be used to de-energise the power stage set.
The connection area is still live when the DC main switch is switched off.
Ensure that the power stage set and connection area are disconnected from
one another before carrying out any maintenance or service tasks.
The power stage set is only to be disconnected from the mounting bracket
once it is de-energised.
Maintenance and servicing in the power stage set of the inverter must only
be carried out by Fronius-trained service technicians.
CAUTION!
15