Power category
10.0-3 208–240/12.0-3 208–240/10.0-3 480/12.5-3 480
15.0-3 208
15.0-3 480/17.5-3 480/20.0-3 480/22.7-3 480/24.0-3 480
NOTE! Protection class NEMA4X is only ensured when the inverter is mounted and firmly screwed into
the wall bracket.
The wall bracket without inverter has no NEMA protection.
NOTE! Photovoltaic modules exposed to light supply current to the inverter.
NOTE! When using cable inputs outdoors, ensure that these are sealed with NEMA4X protection be-
fore operation.
NOTE! When installing using a metal carrier, the inverter should not be exposed to rainwater or water
spray at the back. Ensure proper rainwater or spray water protection.
NOTE! When installing outdoors, only use waterproof conduit fittings and conduits. Conduit fittings and
conduits are not part of the scope of supply for the inverter.
NOTE! When connecting aluminum cables:
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follow all national and international guidelines regarding the connection of aluminum cables
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follow the instructions of the cable manufacturer
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perform an annual check to ensure that the cables are firmly attached according to the proper tor-
que.
NOTE! When connecting DC cables, ensure the polarity is correct.
NOTE! Form a cable loop in accordance with NEC using all cables.
NOTE! Follow general ESD guidelines when handling option cards.
NOTE! Fronius will not bear any costs for production downtimes, or for installations, etc., which may
arise due to a detected electric arc and its consequences.
Fronius accepts no liability for fires which may break out despite integrated arc detection/interruption
(e.g., due to a parallel arc).
NOTE! Before an inverter can be reset following a detected electric arc, check the entire affected pho-
tovoltaic system for any damage.
NOTE! If the insulation on the AC cable is not designed for a maximum of 1000 V, AC and DC cables
must not cross in the inverter during connection.
If it is impossible to prevent the cables crossing over during connection, the AC cable needs to be laid
in a section of the conduit supplied with the inverter.
In this case, AC and DC cables must only be laid together when the cable insulation is designed for the
maximum possible voltage of 1000 V for both cables.
NOTE!
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Make sure that the grid neutral conductor is grounded. For insulated networks (without grounding),
this is not the case, and operation of the inverter is not possible.
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A neutral conductor is required for measurement purposes when operating the inverter. The neu-
tral conductor must have a current carrying capacity of at least 1 A.
Current carrying capacity (MPP1/
MPP2)
25 A/16.5 A
50 A
33 A/25 A
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