Standards

• RENFE E.T. 03.365.051.6

Construction

Conductors
Solid annealed bare copper 0.9/1.4mm as per ASTM B-3/class 1 of IEC 60228

Insulation
Solid polyethylene as per ASTM D 1248/IEC 60708

Twisted Pairs
Two insulated conductors are twisted into pairs with varying lays to minimize crosstalk

Cable Core Assembly
The cores are cabled together in concentric layers to form the cable core. Units are identified by colour coded binders

Core Filling (optional)
The cable core interstices can be filled with petroleum jelly to avoid longitudinal water penetration inside the cable

Core Wrapping
One or more non-hygroscopic polyester tapes are helically or longitudinally laid with an overlap

Moisture Barrier (optional)
An optional copolymer coated aluminium tape of 0.2mm is applied longitudinally with an overlap

Bedding
PE or LSZH

Electrostatic Screen
Corrugated copper tape of 0.12mm is applied longitudinally with overlap

Electrostatic Armour
Two high permeability steel tapes of 0.5mm are helically applied with gap. The outer tape will cover the gap left by the inner one

Sheath
PVC or LSZH

Ripcord
Nylon ripcord may be placed parallel to the cores to facilitate sheath removal