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56 Planning the electrical installation
Relay cable
￭
The cable type with braided metallic screen (for example, ÖLFLEX from Lapp Kabel,
Germany) has been tested and approved by ABB.
Routing the cables
Route the generator cable away from other cable routes. It is recommended that the generator
cable, grid cable and control cables are installed on separate trays. Avoid long parallel runs
of generator cables with other cables in order to decrease electromagnetic interference
caused by the rapid changes in the converter output voltage.
Where control cables must cross power cables make sure they are arranged at an angle
as near to 90° as possible. Do not run extra cables through the converter.
The cable trays must have good electrical bonding to each other and to the grounding
electrodes. You can use aluminum tray systems to improve local equalizing of potential.
A diagram of the cable routing is below.
2
min. 200 mm (8 in)
1
Converter
2
Grid cable
3
Control cables
4
Generator cable
5
Power cable
1
90°
3
4
min. 300 mm (12 in)
5
4
min. 500 mm (20 in)
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