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
Calculate the Maximum Power That Transmitted To the Load? A 25 MW load at the 33 kV receiving-end busbar of a short 3-phase transmission line has a power factor of 0.8 lagging.

Flag Registers Flag  register  is also an  8 bit  register. Out of 8 bit  five are  defined as flags to indicate status  of the accumulator  hence it is also called status reg

A battery having of 5 cells with emf and internal resistance of every cell is 1.5V and 0.25Ω connected in series. If the current flow by load resistance is 1.5A, calculate the valu

Code, Stack, Data, Extra Segment registers in 8086.

Q. Explain Cathode-ray tube? While the CRT display is one of the oldest, it still remains one of the most popular display technologies. The raster-scanned display devices work

Give the properties and application of asbesto. Asbestos: It is inorganic fibrous material. Two kinds of asbestos are available. Chrysotile asbestos : This material is h

Q. Determine L and C of the band pass filter circuit of Figure to have a center frequency of 1 MHz and a bandwidth of 10 kHz. Also find the Q of the filter.

Determine the value of Resistance: Determine the value of R, so that the condition for resonance is fulfilled Figure Solution Admittance of first branch

The circuit shown below is a DC charging and discharging circuit. a.  At t = 0 sec, switch S1 is thrown to position 1 ("pos1"). Write the mathematical expressions for and .

Name the 6 modes of operations of an 8253 programmable interval timer. Mode 0: interrupt on terminal count Mode 1: hardware re -triggerable one-shot Mode 2: rate generato