REFU Elektronik GmbH
REFUsol 48K-UL
29
To avoid these disadvantageous conditions, twisted lines should be used for power supply if possible. If
laying of twisted lines is not possible, the following requirements must be met for single cores:
Lay single cores next to each other.
It is not allowed to lay single cores in closed, magnetically conducting materials (e.g., sheet steel
pipe).
If laid in open cable ducts, single cores should be laid such that the spacings between them are as
small as possible.
L1
L2
L3
N
PE
Pos : 42 /I nverter M anuals/ Ins tall ation/DC- Anschl uss PV-G enerator/ 843 844 @ 3\ mod_1487158518597_641. doc x @ 27824 @ 2 @ 4
4.12
DC Connection of the Solar Generator
DANGER
Danger to life due to high voltages from active PV strings
Before connecting the PV strings, connect the inverter to the power supply
and additional ground connection.
The connection of the PV strings must always be carried out deenergized.
The inverter must be earthed with the grounding bolt, otherwise a potential
difference can build up, causing a risk of electric shock!
The inverter has a single DC input for connecting the solar generator. The module strings must be combined
in a separate DC string combiner box.
The DC terminals can be used with aluminum and copper wires. Please also check the installation instruction
of Phoenix Contact.
Note:
To avoid unnecessary loss of energy yield, the sum total of the resistive and
inductive voltage drop on the power supply line at nominal load should not
exceed 1 % of the line voltage.
Minimum spacing
between single cores!
