Review of Cabling Techniques and Environmental Effects Applicable
Review of Cabling Techniques and Environmental Effects Applicable
Review of Cabling Techniques and Environmental Effects Applicable
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<strong>Review</strong> <strong>of</strong> <strong>Cabling</strong> <strong>Techniques</strong> <strong>and</strong> <strong>Environmental</strong> <strong>Effects</strong> <strong>Applicable</strong> to the Offshore Wind<br />
Farm Industry – Technical Report<br />
Figure 3.4: Typical Cross Section <strong>of</strong> a Double Armoured Cable (used<br />
in areas subject to a high risk <strong>of</strong> hostile seabed intervention)<br />
3.4.6 ROCK ARMOURED CABLE<br />
Rock armoured cable is a double armoured cable where the outer layer <strong>of</strong> contrahelically<br />
laid armour has a tight pitch angle which results in a tight packing <strong>of</strong><br />
the armour wire around the cable. This armour type provides a very stiff outer<br />
protection to the cable core <strong>and</strong> this type <strong>of</strong> cable would typically be employed<br />
where the cable would be laid over rocky outcrops in shallow water, where the<br />
cable was perceived to be at high risk from abrasion damage, or other localised<br />
risks resulting from a surface laid cable in a shallow water environment.<br />
3.5 Power Cables<br />
Power cables are defined as subsea cables which are used to either import or<br />
export power capacity. For example, there are a number <strong>of</strong> installed subsea<br />
power cables between the UK <strong>and</strong> France which allow for such power exports<br />
<strong>and</strong> imports. Similar systems are used to connect isl<strong>and</strong> settlements around<br />
the UK such as the Scottish Isles <strong>and</strong> the Isle <strong>of</strong> Wight. These cables are large<br />
diameter cables with similar characteristics <strong>and</strong> behaviour to the export cables<br />
associated with <strong>of</strong>fshore wind farm developments.<br />
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