Underground Cable : Definition, Basics Terms and Construction

Written On Tuesday, February 19th, 2013 At 07:07:07 am By Sunil Saharan
7346 Times
This article explain basic terms associated with underground cable and construction of underground cable.

Electrical systems are based on electrical energy and there are two main ways to transfer electric energy from one place to another place viz.
  1. Overhead System
  2. Underground System
We may compare these systems in other post but our current discussion is based on underground cables and their types. Cable : A cable is nothing more than a medium to transfer electrical energy from one place to another place or we can say that a cable is just an insulated conductor which connects supply point and load point for operation of an electric equipment. Underground Cable : A cable so prepared that it can withstand pressure and can be installed below the ground level and normally two or more conductors are placed in an underground cable with separate insulation on each conductor. Above image shows the parts of an underground cable. Here is a little description about the parts of an underground cable : Conductor or Core : Conductor or Core is the main part of the underground cable. It is a conducting material generally made up of Copper, Aluminium or ACSR depending on many factors like Voltage rating, power to be handled, distance between service and load point. Shield : Shield or conductor shield is also a conducting material and its purpose is to protect the conductor against crack or discontinuity. Insulation : Each core is provided with individual insulation and the purpose of this insulation is to separate the conductor from the other part or other conductors. Sheath : Sheath is a metallic layer provided over the insulation of the core or the conductor. Filler :Filler materials are used where two or more conductors are there in the cable. The space between various sheath is covered or filled with the insulating material and thus the name filler comes. Bedding :Bedding is the insulating layer that binds the filler material and it holds all cores of the cable. Armour :Armour is a galvanised steel layer for providing mechanical strength to the cable. Serving : Serving is an insulating layer that protects the cable from corrosion and other chemical reactions with soil. It prevents moisture being entered in the cable.

Tags :Underground cable, construction of underground cable
Article Was Last Updated on Wednesday, March 14th, 2018 At 01:03:16 am


Follow steps described here at your own risk. Privacy Policy

भीड़ हमेशा उस रास्ते पर चलती है जो रास्ता आसान लगता है, लेकिन इसका मतलब यह नहीं की भीड़ हमेशा सही रास्ते पर चलती है| अपने रास्ते खुद चुनिए क्योंकि आपको आपसे बेहतर और कोई नहीं जानता|

-- अज्ञात
Site Statistics
Stats at a Glance

Articles: 54
Viewed: 390915 Times
Photos : 53
Viewed: 575880 Times
Questions : 2344
Viewed: 195080 Times
Page Load No. 3161106

Articles
Photos
Take Quiz
1 Liners For Exam
Show Questions(1 by 1)
 ©2011-2023 SunilSaharan.In