Installation and Operating Instructions V02
21
5.4 AC connection
5.4.1 Conditions for the AC connection
Cable Requirements
The grid connection is established using three conductors (L, N, and PE).
We recommend the following requirements for stranded copper cable.
Object Description
Value
A
External diameter
5 to 13 mm
B
Conductor cross-section
2.5 to 6 mm²
C
Stripping length of the insulated conductors
approx. 12 mm
D
Stripping length of the outer sheath of AC cable
approx. 70 mm
The PE insulated conductor must be 10mm longer than the L and N conductors
Larger cross-sections should be used for longer leads.
Cable design
The conductor cross-section should be dimensioned to avoid power loss in cables
exceeding 1% of rated output power.
The higher grid impedance of the AC cable makes the inverter easier to disconnect
from the grid due to excessive voltage at the feed-in point.
Danger to life due to high voltages in the inverter
• Before performing the electrical connection, ensure that the AC
circuit breaker is switched off and cannot be reactivated.
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