Fronius Symo Hybrid 3.0, Installation Instructions Manual, Page: 14 / 40

Connecting the inverter to the public grid (AC side)
Safety
WARNING!
Incorrect operation or poorly executed work can cause serious injury or damage.
Commissioning of the hybrid system may only be carried out by trained personnel in
accordance with the technical regulations. Read the Installation and Operating Instruc-
tions before installing and commissioning the equipment.
WARNING!
An electric shock can be fatal.
Danger due to grid voltage and DC voltage from solar modules that are exposed to light.
▶
Ensure that both the AC side and the DC side of the inverter are de-energised
before carrying out any connection work.
▶
Only an authorised electrical engineer is permitted to connect this equipment to the
public grid.
WARNING!
An electric shock can be fatal.
Danger due to grid voltage and DC voltage from solar modules or battery.
▶
The DC main switch is only to be used to de-energise the power stage set. The con-
nection 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 car-
ried out by Fronius-trained service technicians.
CAUTION!
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.
Monitoring the
grid To provide the best possible grid monitoring, the resistance in the leads to the AC-side
terminals should be as low as possible.
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