NOTE!
Before connecting solar modules, make sure that the voltage specified by the
manufacturer corresponds to the actual measured voltage.
▶
Note the safety instructions and specifications of the solar module manufacturer
regarding solar module grounding.
Connecting Alu-
minum Cables
The DC-side terminals are designed for connecting single-wire, round aluminum cables.
Due to the reaction of aluminum with air that creates a tough, non-conductive oxide layer
the following points must be considered when connecting aluminum cables:
- Reduced rated currents for aluminum cables
- The connection requirements listed below
Notice! Always follow the instructions of the cable manufacturer when using aluminum
cables.
Notice! Take into account local specifications when configuring cable cross sections.
Connection Requirements:
1
Carefully clean off the oxide layer of the stripped end of the cable, e.g. using a knife
IMPORTANT! Do not use brushes, files, or sandpaper; aluminum particles may get stuck
and can transfer to other cables.
2
After removing the oxide layer of the cable end, rub in a neutral grease, e.g., acid-
free and alkali-free Vaseline
3
Then immediately connect it to the terminal
IMPORTANT! Repeat the steps above whenever the cable is disconnected and then
reconnected.
Connecting Solar
Module Strings to
the Inverter
CAUTION!
Danger due to incorrectly connected PV cables and voltage from the solar mod-
ules
This can result in damage to the inverter.
▶
Check the polarity and voltage of the solar module strings before connection. The
voltage must not exceed the following values:
Symo 10.0-3 - 12.0-3 208-240
0-11,154 ft (0- 3400 m) = 600 V
Symo 15.0-3 - 24.0-3 480
0-6561 ft (0-2000 m) = 1000 V
6531- 8202 ft (2000-2500 m) = 950 V
8202-9842 ft (2500-3000 m) = 900 V
9842-11,154 ft (3000-3400 m) = 850 V
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