Preventing leakages at insulators, Electrical Engineering

Preventing Leakages at Insulators

Leakages at insulators, cracking of insulators and flashover across insulators frequent cause outages and give output in loss of revenue. Pollution is a major cause for this damage. Because of pollution a deposit is created on the insulator surface. The surface layer might absorb moisture and become semi-conducting causing leakage currents to flow. The surface gets heated and leads to an avalanche causing a flashover and cracking of insulator.

Use of appropriate material for insulators (like porcelain, glass and etc. depending on the nature of pollution in the local area) and designed protected creepage path helps in decreasing insulator failure. Preventive actions are regular inspection and hot line washing, the latter being particularly appropriate for coastal areas and areas along with chemical industries.

Posted Date: 2/6/2013 5:31:28 AM | Location : United States







Related Discussions:- Preventing leakages at insulators, Assignment Help, Ask Question on Preventing leakages at insulators, Get Answer, Expert's Help, Preventing leakages at insulators Discussions

Write discussion on Preventing leakages at insulators
Your posts are moderated
Related Questions
Explain properties and application of Aluminium. Properties of Aluminium: 1) Pure aluminium in colour is silver white. 2) Aluminium is a ductile metal and can be put

Port Address The port  address  is of 8 bit  it is range from 00H  to FFH. It means  there may be total  i 256 input  ports and 256  output  port which can be accessed by 8085


Q. For the circuit shown in Figure(a), determine the diode current and voltage and the power delivered by the voltage source. The diode characteristic is given in Figure.

Q. Explain Continuous-data and discrete-data systems? A continuous-data system is one in which the signals at various parts of the systemare all functions of the continuous-tim

having looked at the circuit, i first wanted to start my frequency from 0 and plot for 10000 to 20000. so in matlab i used f = 0:10000:20000; but the equation for frequency is f= 1

Addition of binary numbers Example:   Add  110010102 ( -510). and 00000101 2 (+5 10 ) Solution :                         Binary                                   signed

Q. Illustrates typical thermal noise waveform? In general, any physical resistor or lossy device can be modeled by a noise source in series with a noiseless resistor, as shown

Problem: (a) Compare the different MAC schemes, namely FDMA, SDMA, TDMA and CDMA. (b) Describe with help of diagrams the different phenomena involved in multipath propaga

Name the various magnetically hard alloys. Several of the magnetically hard materials are rare earth carbon steel, cobalt, tungsten steel, alnico, hard ferrites and cobalt stee