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10. Wiring / Eletrical Connection
Seite 33
| Owners Manual SkyWind NG, Version 5.1
10.7 Wire Cross
-
Section
You must use a proper wire cross
-
section in all eletrical installations. Although this is always
important, this topic must be considered in very much detail for the wind turbines DC connec-
tion. A too small wire cross
-
section will have a very negative effect on the turbines perfor-
mance.
Determine the DC wire length your installation will require from the turbines generator,
through the mast, all the way to the inverter. This should not be more than 30 m. Always use 6
mm² cross
-
section
Solarflex
-
X PV 1
(by HELUKABEL) or equivalent inside the turbine and tower.
Plan to use red coloured wire for positive and black or grey colour for negative. If less than 20 m
of cable are required you may use 6 mm² cable (AWG 9 or 10) all the way. If more than 20 m
are required you should change to 8 mm² (AWG 8) immediatly after leaving the tower. If you
follow these guidelines your cable losses will usually be 5% or less.
If regulation or legislation requires different (larger) cross
-
sections the trained professional will
always follow the regulation.
Be aware that using the wrong type of cable (e.g. speaker cable), too little cross
-
section (e.g. 1.5
or 2.5 mm²) may stop your turbine from working at all or even lead to total destruction of the
system. Keeping the DC wiring as short as possible and using a sufficient cross
-
section for the
wiring is the easiest way to gain more performance in your wind turbine system.
1
-
20 m
=
6 mm²
20
-
30 m*
=
8 mm²
*Always use 6 mm² inside turbine and tower!
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