5.3 AC connection
5.3.1 Conditions for the AC connection
Cable Requirements
The grid connection is established using three
conductors (L, N, and PE).
We recommend the following specifications for stranded copper wire.
HPS-1500/2000/3000,HPS-1500D/2000D/3000D:
Object Description Value
A External diameter 9 to 14 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. 50 mm
The PE conductor must be 8mm longer than the L and N conductors
Larger cross-sections should be used for longer cables.
HPS-3680/4000/5000/6000/65000 HPS-
3680D/4000D/5000D/6000D/6500D:
Object Description Value
A External diameter 9 to 14 mm
B Conductor cross-section 4 to 6 mm²
C Stripping length of the insulated conductors approx. 12 mm
D Stripping length of the outer sheath of AC cable approx. 50 mm
The PE conductor must be 8mm longer than the L and N conductors
Larger cross-sections should be used for longer cables.
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 it easier to disconnect from the
grid due to excessive voltage at the feed-in point.
The maximum cable lengths depend on the conductor cross-section as follows:
Conductor cross-section
HPS-1500/
HPS-1500D
HPS-2000/
HPS-2000D
HPS-3000/
HPS-3000D
2.5 mm² 37 m 28 m 17 m
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