Nexans Handling Cable Compounds

1. Generalities
The selection of the correct compound assume the detailed analysis of the application where the cable is used.

In the case of flexible, movable applications such as in cranes the compounds for insulation, semiconductive layer, outer and inner sheaths are chosen by Nexans for several factors as high mechanical properties, chemical resistance and
thermal requirements.

Nexans is familiar with the high performance requirements in flexible applications combined with high mechanical stress. Due to this, Nexans especially uses in our RHEYFIRM®(RTS) only highgrade rubber insulation such as RHEYCLEAN®-HV.
This special compound, manufactured in several versions allows to reduce wall-thickness for the different voltage rates from 6 to 30 kV. We generally use compounds that exceed required standards like VDE.

In our product range RHEYFIRM®(RTS) and RHEYCORD®(RTS) we only use the compound 5GM5 instead of 5GM3. This high grade compound has a much higher tensile strength, tear resistance and abrasion resistance than the more
commonly used compound 5GM3.

Additional advantages of this special outer sheath compound are high flame retardancy properties, ozone, weather and ageing resistance. Furthermore it has excellent elastic behaviour even in low temperatures.

NEXANS distinguish compounds between Thermoplastics and Elastomers.

Both compounds are used for insulation, inner and outer sheaths. The graph and table on the following pages give a short introduction to compound and explain the typical and most important characteristics from several materials used in Nexans handling cables.

Compounds

Thermoplastics Not cross-linked macro-molecular connections. It is possible to re-use it again and again with warm up into plastic condition.

Elastomers Cross-linked polymer materials, which do not flow viscous on higher temperature, but they react rubber elastic at a temperature range

Insulation EPR XLPE

Sheath CR / PCP

Insulation PVC TPE-E-

Sheath PUR PVC