lightening arresters and poor soil
lightening arresters and poor soil
(OP)
I am working at a utility company in which lightnening is the major cause of outages and damage to pole mounted transformers.The terrain is hilly and the soil is poor.can any one recommend any practices that they may have done in the past. Also, if arresters are placed on each phase will this mitigate the damages done to the transformers?






RE: lightening arresters and poor soil
The lightning arresters will help to ground travelling waves propergated along the line due to INDIRECT LIGHTNING STROKES,there by protecting the end equipment.Therefore,the line has to be shieled with a properly designed shielding conductor bonding each tower top.
RE: lightening arresters and poor soil
You may want to use services of an experienced professional engineer and some grounding system experts (mfrs/vendor) who deal with such issues.
Rafiq Bulsara
http://www.srengineersct.com
RE: lightening arresters and poor soil
RE: lightening arresters and poor soil
www.iaei.org/magazine/?p=63
RE: lightening arresters and poor soil
Overhead shield wires are usually not cost effective for MV distribution lines. Many lightning flashovers on MV lines with limited BIL are caused by strokes to ground and objects near the line inducing voltage above the line BIL on the line. OH shield wires will not stop these. With low BIL, backflashes from direct strokes to the shield wire will also occur.