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# How can i find the voltage in a high tension transmission line?

How can i find the voltage in a high tension transmission line? is the rings are key to finding it?

#1

08-13-2014 04:29 PM

Top #2

Yes, You can find the Voltage from VT secondary Circuit and Calculate the trough Ratio of PRI & SEC voltage with measured Voltage.

08-13-2014 06:32 PM

Top #3

Hi,

If you mean just to specify the estimated voltage by looking at a conventional T/L, you may find it out from the numbers of the insulators per string (suspension or tension).

If you mean just to specify the estimated voltage by looking at a conventional T/L, you may find it out from the numbers of the insulators per string (suspension or tension).

08-13-2014 09:03 PM

Top #4

Capacitive coupling can be used, to check the charge on the conductor from a distance, a kind of non contact sensor.

08-13-2014 11:57 PM

Top #5

Puede ser un indicador bastante aproximado, pero hay que tener en cuenta si el aislador es vidrio o porcelana y si el ambiente es húmedo, seco o contaminado.

Estamos hablando de línea de fuga y de cm/ Kv en cada aislador.

Estamos hablando de línea de fuga y de cm/ Kv en cada aislador.

08-14-2014 02:27 AM

Top #6

In the UK the transmission line pylons have ID labels stating the voltage. Failing that you can calculate from the string insulator length

Below is a guide:

Line voltage

(kV) Discs

34.5 3

46 4

69 5

92 7

115 8

138 9

161 11

196 13

230 15

287 19

345 22

Below is a guide:

Line voltage

(kV) Discs

34.5 3

46 4

69 5

92 7

115 8

138 9

161 11

196 13

230 15

287 19

345 22

08-14-2014 05:11 AM

Top #7

Standard disc insulators are rated at an operating voltage of 10-12 kV.

08-14-2014 07:30 AM

Top #8

Mr.mohammad kordmahalleh,would u plz elaborate as an example that how would i find voltage of a transmission line from the insulator disc by counting the discs.is there any formula that's applicable everywhere?and which helps me make calculations easy?