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Distance between Extra high voltage transmission lines and residential buildings

MAS
Hi all,


I have a querry regarding the Extra high voltage transmission lines (EHV AC)


I would like to know the international standards for maintaining a safe distance from overhead transmission lines of 132 KV & 400 KV passing by residential plots where the cluster of residential high rise/super high rise towers are planned to be executed.


Appreciate advices from experts


Thanks & Regards

MAS
  • 0
    MAS:

    Hi all,


    I have a querry regarding the Extra high voltage transmission lines (EHV AC)


    I would like to know the international standards for maintaining a safe distance from overhead transmission lines of 132 KV & 400 KV passing by residential plots where the cluster of residential high rise/super high rise towers are planned to be executed.


    Appreciate advices from experts


    Thanks & Regards

    MAS


    In the U.K. U.K.P.N. (United Kingdom Power Networks) may have online details of clearances for such. I suggest that you post your question on the I.E.T. Wiring and Regulations forum where electrical engineers may assist you.

    UKPN08659 Ask the experts22.11.13.indd (ukpowernetworks.co.uk)


    Z.


  • 0
    Isn't UKPN just one of the distributors - as far as I know they don't deal with anything above about 66kV (usually 11kV or 33kV). Above that it would be transmission rather than distribution - so more likely the National Grid I think.

       - Andy.
  • 0
    I suspect that the answer is that the two are not mixed. Self-evidently, one cannot build a tower block under an ETL. Locally, there is a retail park (Asda, Screwfix, electrical and plumbers' merchants, etc.) with buildings directly below and pylons in various car parks. Further on, there are ordinary two storey houses under the lines.


    However, I do not think that I have ever seen pylons in a city such as London.


    Modern practice seems to be to put the ETLs underground.
  • 0
    Oh yes.

    Working near electricity equipment.pdf (nationalgrid.com)


    Z.
  • 0
    I agree your better off contacting national grid after all lines of/275/400Kv are there territory I think 132Kv is now regarded as primary distribution  same as 33/66 Kv
  • 0
    Height of Line Conductors:


    Not exceeding 33,000 volts  5.2 metres


    Exceeding 33,000 volts, not exceeding 66,000 volts, 6 metres.


    Exceeding 66,000 volts, not exceeding 132,000 volts, 6.7 metres.


    Exceeding 132,000 volts, not exceeding 275,000 volts, 7 metres.


    Exceeding 275,000 volts, 7.3 metres.


    For those interested, UK Power Networks takes energy from National grid at 400kv at a Grid supply point (a substation) and steps it down to 132kv for distribution locally.


    Regards, UKPN
  • 0
    The clearances are usually a great deal more than that, which is good. There is extremely little danger for EHV line collapse, they are quite a bit bigger than they look and have a steel wire rope core with a very high breaking load (many tonnes). With the age now of some of the pylons, I would think that failure of some of the old ones was more likely, although they do get inspected for damage and rust.
  • 0
    I will contact UKPN...

    Thank you
  • 0
    Zoomup:

    Oh yes.

    Working near electricity equipment.pdf (nationalgrid.com)


    Z.


    Thanks for info


  • 0
    Kelly Marie Angel:

    I agree your better off contacting national grid after all lines of/275/400Kv are there territory I think 132Kv is now regarded as primary distribution  same as 33/66 Kv


    Sure I will contact national grid...Thanks


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