Siem Offshore Contractors
Amrumbank West Offshore Wind Farm
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Amrumbank West OWF

33kV Inner Array Grid Cable System

Siem Offshore Contractors was awarded the contract for the turnkey engineering, procurement, installation and commissioning (EPIC) works related to the inner array grid cable system of the Amrumbank West Offshore Wind Farm (OWF) project by E.ON Kraftwerke.

The OWF is situated north of the island of Helgoland and west of the island of Amrum, within the German Bight sector of the North Sea. The OWF consists of 80 wind turbine generators, each with a capacity of 3.6 MW and is based on an inner array grid of 86 medium voltage copper core submarine composite cables with a total length of up to 86km.

The submarine composite cables were manufactured and supplied by nkt cables on behalf of the client and were subsequently installed by Siem Offshore Contractors utilising dedicated in-house resources such as the Cable Lay Vessel Siddis Mariner and Installation Support Vessel Siem Moxie.

Facts & Figures
  • 80 Wind Turbine Generators

  • 302 MW total installed capacity

  • 4,385 W2W Connections

  • 1 Offshore Substation (OSS)

  • 90 km of submarine cables

  • 17,702 Personnel Transfers

Within this project, SOC showed their high flexibility w.r.t. sequence change, stand-by costs optimization and successful deployment of brand new resources. Furthermore, SOC set within this project a high level of offshore safety awareness, high standard of documentation and customer focus.”

Harald Poppinga
Project Manager
Specifications
Client: E.ON Kraftwerke, Germany
Location: North Sea, German Sector
Water Depth: Up to 25 m
Scope: Supply of cable protection systems
Marine cable route survey
UXO detection, identification and removal
Pre-lay grapnel run and route clearance
Cable installation, termination, testing and pre-commissioning
Type of Cables: 3-core submarine composite cable
Voltage Level: 33 kV
Conductor: Copper
No of Cables: 86
Length of Cables: 90 km
WTG’s: 80 x 3.6 MW, Siemens Wind Power
Total Capacity: 302 MW
Schedule: two (2) campaigns in 2014 and 2015
Vessels: MV Siddis Mariner
ISV Siem Moxie
W2W Connections: 4,385
Personnel Transfers: 17,702

Website: E.on

More information: 4C Offshore

jill-falenschek
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Jill Falenschek
Sales & Marketing Assistant
+49(0)491-91243-0
jill.falenschek@siemoffshore.com