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
You have been given a DC motor to characterize. What three measurements are required in order to develop the torque-speed curve and the acceleration curve for the unloaded motor?

Magnetic materials

Ionic Bonding Instance: NaCl. Na (Z = 11) gives up the outermost shell electron of it to Cl (Z=17) atom, so the crystal is build up of ions with the electronic structure

Q. Two shunt generators operate in parallel to supply a total load current of 3000 A. Each machine has an armature resistance of 0.05and a field resistance of 100. If the generat

Q. What is thermal runaway? State one method to prevent the same? The effect of changes in leakage current (ICO)  and current gain(b) on the dc bias point is given by the equat

How single stepping can be done in 8086? By setting the Trace Flag (TF) the 8086 goes to single-step mode. In this mode, after the implementation of every instruction s 8086 ge

With the help of neat diagrams illustrate the construction and working of various elements used in hydro-electric power plant. Compare hydro-electric power plant with other type

Molecular Chain (MIT, Princeton, Colorado) Consider a one-dimensional chain consisting of N molecules which exist in two configurations, α, β, with corresponding energies  and

The input to the satellite system of Figure 1 is a step function θ c (t) = 5u(t) in degrees. As a result, the satellite angle θ(t) varies sinusoidally at a frequency of 10 cycles p

a rectangular surge of 2us duration and magnitude of 100Kv travels along a line of surge impedance 500 ohms. The latter is connected to another line of equal impedance through an i