String Fuses - Fronius Primo 208-240 Instructions De Service

Text of the warning notices:
WARNING!
Risk of electric shock
Non-insulated inverter
Do not remove the cover. The device does not contain any user-serviceable parts.
Maintenance work must be carried out by a trained service technician.
Both AC and DC voltage sources terminate inside this device. Each circuit must
be turned off before carrying out maintenance work.
If the solar module is exposed to light, it will supply a DC voltage to the device.
Risk of electric shock due to energy stored in capacitors. Do not remove the cov-
er until all power supply sources have been switched off for at least 5 minutes.
Ungrounded system: The DC cables in this PV system are not grounded and can
be live.

String Fuses

You can give solar modules extra protection by using string fuses inside the
Fronius Primo 10-15 kW.
Crucial for the fuse protection of the solar modules is the maximum short circuit
current I
National regulations regarding fuse protection must be observed. The electrician
performing the installation is responsible for choosing the right string fuses.
NOTE!
To prevent a risk of fire, faulty fuses must only be replaced by new equivalent
fuses.
The inverter is supplied as an option with the following fuses:
-
-
5
5
of the relevant solar module.
sc
4x 15 A string fuses at DC+ input (MPPT1) and 4x metal bolts at DC- input
8x metal bolts
Safety symbols:
Danger of serious injury and
property damage due to in-
correct operation
Do not use the functions de-
scribed here until you have
fully read and understood the
following documents:
-
These Operating Instruc-
tions
- All Operating Instruc-
tions for the system com-
ponents of the photovol-
taic system, especially
the safety rules
Dangerous electrical voltage
Wait for the capacitors to dis-
charge.
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