Factors of contributing to losses in service cables, Electrical Engineering

Factors of Contributing to Losses in Service Cables

1. Tapping of underground service cables: The service cables must be visible so that tapping of cables can be detected. Underground service cables should be avoided as they are not visible for routine inspection.

2. Size of the cable: Improper selection of cable size results in increased losses and lower voltage at the consumer premises leading to revenue loss.

3. Bimetallic connections: Generally, the LT conductor is of aluminium while at many places the service cable is of copper. Connecting aluminium and copper creates a bi-metallic junction leading to corrosion, high resistance and failure. This should be avoided.

4. Connections:  A Loose connections of the service cables can result in sparking and is another source of avoidable energy loss.

5. Guarding against Losses due to High Impedance Faults: The high impedance faults result in avoidable technical loss and may also cause safety hazards in overhead system. High impedance faults are often caused due to trees touching the lines and bird nesting, etc. Regular line patrolling, tree trimming and removing bird nests are needed to prevent such faults.

In underground cables high impedance faults may occur due to insulation pitting, breakdowns from digging, rodent infestation or ageing of cable insulation, formation of carbon trees, etc. Locating and repairing underground faults requires specialized equipment and training.

Posted Date: 2/6/2013 6:12:23 AM | Location : United States







Related Discussions:- Factors of contributing to losses in service cables, Assignment Help, Ask Question on Factors of contributing to losses in service cables, Get Answer, Expert's Help, Factors of contributing to losses in service cables Discussions

Write discussion on Factors of contributing to losses in service cables
Your posts are moderated
Related Questions
The constants of an amplifier are given by A = 1, R i =10,000, and R o = 100. It is driven by a Thévenin source with v Th (t) = V O cos ωt and R Th = 20,000 . The amplifier o

Ballistic galvanometer

For the 3 bus system shown below all values are given in pu on a 100MVA base (a) Use Matlab functions lf gauss and lf Newton to find power flow solution for the system, accurate

An  electric  heater  element  is  made  of  Nichrome  wire  having  resistivity  equal  to 100 ×10 -8 ohm-metre. The diameter of the wire is 0.3 mm. Calculate the length of the w

what is the difference between the continuous time system and discrete time system and their advnatages?

Q. Explain Linear versus nonlinear control systems? Linear feedback control systems are idealized models that are conceived by the analyst for the sake of simplicity of analysi


Explain superconductivity and explain the effect of magnetic field on superconductors. Various metals become superconducting below a temperature that is the characteristic of t

Determine the change in IC from 25ºC to 175ºC for the transistor defined in this table for fixed-bias with RB = 240 k and = 100 due to the S(VBE) stability factor.

Write a program to count how many from your data set called MYDATA, which is a set of signed single-byte numbers, has positive value and are odd numbers. Save the result in POSOD