These cables can be used on AC Voltage
up to & including 1100 V or
DC up to & including 1500 V.
1.5 Sq. mm. & 2.5 Sq. mm. up
to 61 Cores in Control Cable.
Annealed Bare Electrolytic Copper,
Solid / Stranded conforming to IS:8130:1984..
Conductor are insulated with PVC
Compound as per IS:5831:1984.
On demand insulation is provided
with XLPE also.
COLOR OF CORES :
are identified with a color scheme
as per IS:1554(Pt-I):1988 as under
- Red, Black, Yellow, Blue
Cores - Red & Black
3 Cores - Red, Yellow & Blue.
3 ½ & 4 Cores - Red,
Yellow, Blue & Black. (Reduced
Neutral Core in case of 3 ½ Core)
5 Cores - Red, Yellow, Blue, Black
In case of cable exceeding five
cores, two adjacent (counting
and direction cores ) in each
layer shall be colored Blue, Yellow
and remaining cores grey / Cores
can be identified by numbers by
numerals on the outer surface of
the core as per IS : 1554 : Part-1
: 1988 & IS : 7098 : Part-1 : 1988
or as per customer requirement.
LAYING Of CORES :
are laid up with a suitable lay. The
Final layer direction shall be kept
right hand lay.
The Inner Sheath is applied over
laid up of cores by extrusion.
Armouring is applied over inner
sheath incase the calculated diameter
over inner sheath does not exceed
13 mm, the armour consists of galvanized
round steel wires. Where the calculated
diameter over the inner sheath is
greater than 13 mm the armour generally
consists of flat steel. If required,
the cable can be manufactured with
steel wire where calculated diameter
of cable exceeds 13 mm. Single core
cables are provided with Aluminium
A final covering of PVC Compound,
conforming to IS:5831:84, is applied
over Armoring in case of Armored
Cable or over Inner Sheath in case
of Unarmored Cable, called as "Outer
The Insulation, Inner Sheath &
outer sheath can be HR PVC, FRLS
PVC or FRHF Compound depending upon