Typically, the construction of an Aluminium or steel wire armoured cable comprises of the following components:
|CONDUCTORS:||Current carrying component of the cable.|
|Material||Plain, stranded, compacted copper as per IEC: 60228
Aluminium, stranded, compacted conductors
|INSULATION:||The rated voltage level of the cable depends on the dielectric strength and thickness of the insulation.|
|Material||Cross-linked polyethylene (XLPE) Type GP8 as per BS
|FILLERS:||For providing circular shape to the cable, non-hygroscopic compatible fillers (wherever necessary) are included between laid up cores.|
|BEDDING:||Extruded bedding serves as a bedding for the armour and as a protection for the laid-up cores.|
|Material||Extruded PVC Type 9 Compound as per BS 7655. Reduced propagation flame retardant (RPLHCL)/R PPVC Compound for reduced flame propagation characteristics.|
|ARMOUR:||Armour provides mechanical protection to the cable. It also serves as an Earth Continuity Conductor (ECC). One layer of round wire is applied helically over the bedding.|
|Material||1. Galvanised round steel wire (GSWA) – FOR MULTICORE CABLE
2. Aluminium round wire armour (AWA) – FOR SINGLE CORE.
|OVERSHEATH – FINISH:||General Purpose: Extruded PVC Type 9 Compound as per BS 7655 and also meet fire test requirement of IEC 60332-1.|
|Material:||1. Medium Density Polyethylene (MDPE): Offers higher protection from water ingress and mechanical abrasion.
2. Anti-Termite: Termite resistance can be built in both types described above by compounding with proper additives.
3. Reduced Propagation (RP): Retards propagation of flame in fire situation. (Oxygen Index ≈ 30)
4. Reduced Propagation and Low Acid Fumes (RPLHCL): Retards propagation of flames and gives low emission of hydrochloric acid fumes. (OI ≈ 30 & acid gas emission is less than 18%)
|Voltage Rating:||Uo/U= 0.6/1kV|
|Temperature Rating:||Fixed: -25°C to +90°C|
|Minimum Bending Radius:||1.5mm2 to 16mm2 – Fixed: 6 x overall diameter
25mm2 and above – Fixed: 8 x overall diameter
|BS 5467:||for XLPE insulated armoured cables|
|BS 7889:||for XLPE insulated single core unarmoured cables|
|IEC 60502-1:||for XLPE insulated single/multicore armoured/unarmoured cables|
|IEC 60228/BS6360:||for copper conductor|
|BS 7655:||for Insulation, bedding and outersheath|
|IEC 60332:||for Flame propagation|
|1 core:||Red, Black|
|2 core:||Red, Black|
|3 core:||Red, Yellow, Blue|
|4 core:||Red, Yellow, Blue, Black|
|5 core:||Red, Yellow, Blue, Black, Yellow/ Green|
APPLICATION: Multi-core PVC cable with steel wire armour (SWA). Power and auxiliary fixed wiring cables for use in power networks, underground, outdoor and indoor applications and for use in cable ducting.