Arc Detection/Interruption; Warning Notices Affixed To The Device - Fronius Primo 208-240 3.8-1 Manual De Instrucciones

Insulation monitoring
In photovoltaic systems with ungrounded solar modules, the inverter checks the resistance
between the photovoltaic system's positive or negative pole and the ground potential. In
the case of a short circuit between the DC+ or DC- cable and the ground (e.g., due to poorly
insulated DC cables or faulty solar modules) the inverter disconnects from the grid.
Arc detection/in- The inverter is equipped with integrated arc detection/interruption, which detects and ex-
terruption tinguishes serial arcs.
For example, a serial arc can occur after the following errors or situations:
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If a serial arc is detected, the power is switched off and the grid power feed operation is
interrupted. A state code is shown on the display. The state code on the display must be
manually reset before the grid power feed operation can be resumed.
The power shutdown also extinguishes the serial arc.
Warning Notices The inverter contains and displays warning notices and safety symbols. These warning no-
Affixed to the De- tices and safety symbols must NOT be removed or painted over, as they are often required
vice by electrical code. The notices and symbols warn against operating the equipment incor-
rectly, as this may result in serious injury and damage.
Text of Warning Notices:
Poorly-connected plug connections on the solar module
Poor or defective cable connections on the solar module side, which enable a connec-
tion against the earth potential
Defective solar modules due to problems in the junction box or production errors, such
as high resistance solder connections in individual solar cells
Cables incorrectly connected to an inverter's input terminals
NOTE! This product is equipped with a communication interface in line with the
"Communication Signal for Rapid Shutdown - SunSpec Interoperability Specifica-
tion". Power optimizers and other MLPE features in the photovoltaic system can
impair the correct functioning of the arc detection/interruption. When using these
kinds of components, the system installer is responsible for ensuring the correct
functioning of the arc detection/interruption. Contact your Fronius Technical Sup-
port for more information.
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Safety Symbols:
Danger of serious injury or dam-
age due to incorrect operation
Do not use the functions de-
scribed until you have thoroughly
read and understood the following
documents:
- these operating instructions
- all operating instructions for
system components of the
photovoltaic system, espe-
cially the safety rules
Dangerous electrical voltages
You must wait until the capacitors
have discharged
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