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DC terminals
IMPORTANT! When using ferrules for DC cables with a cross-section of 16 mm², the fer-
rules must be crimped with a right-angled cross-section.
The use of ferrules with insulating collars is only permitted up to a max. cable cross-section
of 10 mm².
Connecting alu-
The DC-side terminals are designed for connecting single-wire, round aluminum cables.
minum cables
The following points must be taken into account when connecting aluminum cables due to
the non-conducting oxide layer of aluminum:
-
-
Connection Requirements:
1
IMPORTANT Do not use brushes, files or sandpaper. Aluminum particles may get stuck
and can transfer to other cables.
2
3
Repeat the steps above whenever the cable is disconnected and then reconnected.
20
min. 2,5 mm² - max. 26 mm²
min. 1,5 Nm - max. 1,8 Nm
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D1
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D2
D3
Reduced rated currents for aluminum cables
The connection requirements listed below
NOTE! Take into account local specifications when configuring cable cross sec-
tions.
Carefully clean off the oxide layer of the stripped end of the cable, e.g., using a knife.
After removing the oxide layer of the cable end, rub in a neutral grease, e.g., acid- and
alkali-free Vaseline.
Then immediately connect it to the terminal.
Max. cross-section of each DC cable:
16 mm²
Min. cross-section of each DC cable:
2.5 mm²
The DC cables can be connected to the DC
terminals without ferrules.
NOTE! To ensure effective strain
relief of the solar module strings,
only use cables with identical
cross-sections.
D1
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