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D) Chemical Protection<br />
If the risk of oil and chemicals affecting the installed cable cannot be excluded this may affect the operation<br />
of the cables in long term.<br />
The extent of the risk is determined by type, agressive nature, condition and quantity of the medium, the<br />
duration of immersion and the temperature.<br />
A suitable protection can be achieved by corresponding measures:<br />
Lead sheath (Pb)<br />
The safest, though most expensive protection<br />
against aromatic hydrocarbons and active<br />
chamicals.<br />
Design Options<br />
Multilayer sheath (L)2Y4Y<br />
This design combining aluminium tape and HDPE<br />
sheath with a covering of polyamide PA (Nylon),<br />
represents an excellent barrier against penetrating<br />
chemicals and can be used as an alternative to lead<br />
sheath.<br />
Advantage: lighter, smaller diameter.<br />
Oil resistant PVC-sheath Yö<br />
In contrast to standard PVC (Y) this compound is more resistant to oils and aliphatic hydrocarbons.<br />
It <strong>pa</strong>sses the oil resistance test according to IEC 60811-2-1.<br />
© KERPEN GmbH & Co. KG 2005 • 1.2007 • Printing errors excepted. Subject to alteration. H3
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