Offshore Cable Installation - Lillgrund - Vattenfall

Figure 3. Inter-array cable layout
Voltage levels are 36 kV for inter-array cables and 145 kV for the export cable. The interarray
cables connect the wind power generators with the transformer platform, W1. The
inter array cables are supplied in three different cross sectional sizes 95 mm 2 , 185 mm 2 and
240 mm 2 . The closer to the transformer platform the larger the dimension of the cable, as
shown in figure 4 below.
95 mm 2
185 mm 2
G G G
≤6 WTG´s
Figure 4. Cable Schematic
7 (30)
240 mm 2
7-9 WTG´s 10 WTG´s
36/145 kV
400 mm 2
630 mm 2