9
Safety
Protection of persons and equipment
WARNING! Incorrect operation and work performed incorrectly
can cause serious injury & damage! Only qualified staff are
authorized to install your Fronius IG Plus and only within the
scope of the respective technical regulations. Do not start
operation or carry out maintenance work before you have read
the chapter ‘Safety Instructions’!
The design and function of the Fronius IG Plus unit offers a maximum
level of safety, both during installation as well as in operation.
The Fronius IG Plus provides operator and equipment protection through:
a) galvanic isolation
b) monitoring the grid
Protection of
persons and
equipment
Galvanic isola-
tion
The Fronius IG Plus is equipped with a high frequency transformer that
ensures galvanic isolation between the DC side and the grid, thus ensu-
ring the highest possible safety.
Whenever conditions in the electric grid are inconsistent with standard
conditions (for example grid switch-off, interruption, etc.), your Fronius IG
Plus unit will immediately stop operating and interrupt the supply of power
into the grid.
Monitoring the
grid
WARNING! An electrical shock can be fatal. Danger from grid
voltage and DC voltage from solar modules.
- The connection area should only be opened by a licensed
electrician.
- The separate power stage set area should only be discon-
nected from the connection area after first being discon-
nected from the grid power.
- The separate power stage set area should only be opened
by Fronius-trained service personnel.
Never work with live wires! Prior to all connection work, make
sure that the AC and DC wires are not charged.
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