XLPE/PVC LT Control and Auxiliary Cables

Control and Auxiliary Cables 600/I000 V as BS: 5467. BS: 6346. IEC: 605020) Manufacturing & Construction Details

The conductors are bunched with seven wire strands, made from high conductivity plain annealed copper wires, aluminum wires and meet the requirements of BS: 6370 specification for conductors in insulated cables and cards. IEC: 228 specification and IS: 81 30.

According its particular standard specification, a cable will be insulated with either, XLPE (cross «linked polyethylene) or PVC (polyvinyl chloride) PVC is suitable for a maximum continuous operating temperature of 70“ C & XLPE — 90“ C.

The armour is single layer of galvanised steel wires. The direction lay of the armour is left hand and size of the armour — wire is specified in the cable standard specification.

Core identification is as follows unless otherwise specified
No. of cores Core Identification
Two core : Red & Black
Three core : Red Yellow & Blue
Four core : Red Yellow Blue & Black

Five and more white cores with number printing in black.

The bedding normally consist of a layer extruded PVC.

Wherever necessary, non—hygroscopic polypropylene fillers are applied in the interstices of multi core cables in PVC insulated unarmored control and auxiliary cables, below the outer sheath. during laying up. A PVC inner covering is included

The standard finish of all cables consists of an extruded black PVC over-sheath, the external surface of which is embossed with the appropriate legend. The over sheath PVC grade is usually Type TM l or Type 9 or BS: 7655; although other grades, e.g. Type 85C Hard grade St2 for cable conforming to IEC: 60502 standard PVC can be supplied when specified. PVC is intrinsically flame retardant and all cables described in this catalogue conform to IEC: 332 Part 1. On special request, electric cables can be tested under fire conditions. PVC with high oxygen index. specially formulated for enhanced fire performance can be supplied if required.