Copper 10 Pair cable Soil 10x2x0.4

A Cable can be defined as a number of insulated metallic conductors bunched in a compact form by providing mechanical protection and electrical insulation.
The cable in which core is fully filled with petroleum jelly, a water-resistant compound, is called jelly filled cable.
Cable can be classified as Underground Cable (laid under ground), Submarine cable (laid under water), Aerial cable (laid over head) and Indoor cable ( laid along the walls of building). However, in Railways only Underground and Indoor (Switch Board)
Cables are used.
This handbook covers Construction. Laying, Jointing, Testing, and Maintenance of (I) Polythene Insulated Polythene Sheathed Jelly Filled underground Cable with PolyAl moisture barrier & (II) Jelly filled underground quad cable (4 Quad or 6 quad) as
per Indian Railway Standard Specifications No. TC 41-97 & TC 30-97 respectively.

MARKING ON CABLE

To enable proper identification of the cable, the following information is embossed,
engraved or printed on the polythene jacket in case of armoured cable, and on the
sheath in case of for un-armoured cable. All the marking is in white or yellow colour:
a) Name/Trade mark of the manufacturer
b) IRS Specification number
c) Year of manufacture
d) Length (Sequential marking)
e) Cable drum No.
f) No. of pairs/conductor size ( Example : 100 pairs/0.63mm)

CONSTRUCTION

A : Polythene Outer jacket
B : Galvanised Steel Tape
C : Polythene Tape
D : Polythene Inner sheath
E : Poly-Al-Laminated Tape
F : Core wrapping (Polyester) tape
G : Polythene Insulated Copper

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