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Fronius Symo 20.0-3-M Installation Instructions

Fronius Symo 20.0-3-M
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Connecting alu-
minium cables
The DC-side terminals are suitable for connecting single-wire, round aluminium
cables. Because of the formation of a non-conductive oxide layer due to the re-
action of aluminium with air, the following points must be considered when con-
necting aluminium cables:
-
the reduced rated currents for aluminium cables
-
the connection conditions listed below
IMPORTANT! Always follow the cable manufacturer instructions when using alu-
minium cables.
IMPORTANT! When designing cable cross-sections, take local regulations into
account.
Connection conditions:
1
Carefully clean the oxide layer from the bare end of the cable by scraping it,
e.g. with a knife
IMPORTANT! Do not use brushes, files or emery paper, as the aluminium
particles get trapped and can be transferred to other conductors.
2
Once the oxide layer is removed, rub the end of the cable with a neutral
grease, such as non-acidic and non-alkaline Vaseline
3
Immediately connect the cable end to the terminal
IMPORTANT! Repeat the procedure if the cable has been disconnected and is to
be re-connected.
Solar module
strings - check-
ing the polarity
and voltage
CAUTION!
Danger due to incorrect polarity and voltage.
This may result in damage to the inverter.
Check the polarity and voltage of the solar module strings before making the
connection. The voltage must not exceed the following values:
Fronius Symo:
When installed between 0 and 2000 m above sea level: 1000 V
When installed between 2001 and 2500 m above sea level: 950 V
When installed between 2501 and 3000 m above sea level: 900 V
When installed between 3001 and 3400 m above sea level: 850 V
the Fronius Symo must not be installed at an altitude exceeding 3400 m
above sea level
Fronius Eco:
When installed between 0 and 2000 m above sea level: 1000 V
When installed between 2001 and 2500 m above sea level: 950 V
the Fronius Eco must not be installed at an altitude exceeding 2500 m above
sea level
29
EN

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Fronius Symo 20.0-3-M Specifications

General IconGeneral
AC nominal output20.0 kW
Max. output current29.0 A
Max. input voltage1000 V
MPPT voltage range200 - 800 V
Number of MPPT2
Dimensions (W x H x D)725 x 510 x 225 mm
Max. apparent AC power20000 VA
AC nominal voltage400 V
AC nominal frequency50 / 60 Hz
THD< 3%
Max. input current33.0 A
Protection classIP 66
Operating temperature range-25°C to +60°C
Warranty5 years
Max. DC power30.0 kW
Power factor1

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