Solid Aluminum Conductor Fine Aluminum Wire Concentric Layer Concentric Round Cable

1.     Scope

This specification is for PVC insulated single phase concentric cables with circular stranded aluminum conductors for operation up to and including 1000 volts between phases and 600 volts to earth .The cable shall have a central phase stranded aluminum conductor insulated with red PVC and concentric layer comprising bare aluminum wires (combined neutral—earth conductor) and outer sheath in black PVC.

2       REQUIREMENT

2.1   SERVICE AND SYSTEM CONDITONS

a)     The cable shall be a service cable for continuous operation outdoors and tropical conditions (temperature range of -1°C to +40°C,humidity of up to 90% and saline conditions along the coast).

b)     The cable shall be suitable for laying in cable ducts in air .

c)     Permissible continuous loading operating temperature shall be 70°C.

2.2   MATERIALS AND CONSTRUCION

2.2.1     Phase Conductors

a)   The phase conductor shall be circular stranded annealed aluminum conductors (class 2).The phase conductor shall have a left-hand direction lf lay .

b) The insulation of the phase conductor shall be red PVC compound specified in KS 04-1022.It shall be applied by an extrusion process and shall be spark tested.

2.2.2       Concentric Layer

a) The neutral conductor shall be concentric and shall be manufactured from plain annealed aluminum wires.

b) The concentric layer shall be applied with a right hand direction of lay.

2.2.3       Over sheath

The over sheath shall be an extruded layer of black PVC

Application

Power cables for energy supply are used for industry and distribution boards, power stations, house connecting boxes and street lighting as well as control cable for the transmission of control impulses and test data.

Overall, where increased electrical and also mechanical protection are required.

Those cables are installed in open air, in underground, in water, indoors and in cable ducts.

The concentric conductor (C) is allowed to use as PE-, PEN-conductor or as shield.

due to the typical construction of concentric conductors it is possible to obtain many more cable joints, without cutting any conductor. In that way the operating reliability is guaranteed.

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