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Nov 20 2017nbsp018332by using stone in substation grass and weed does not grow so it remains nice and clean for perfect visual observation from outside stone reduces the potential movement of wild animals like snakes frogs rats etc for this reason it decreases the
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Aug 12 2010nbsp018332after the cover soil is tamped a layer of crushed stone is laid the stone layer can be anywhere from 1 to 3 feet deep the stone is not there for architectural reasons the crushed stone bed
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Oct 01 2016nbsp018332a2a reasons for using stones in substation power transformers installed in the substations will have oil as cooling and insulating medium oil leakage takes place during operation or when changing the oil in the transformer this oil spillage
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Apr 27 2018nbsp018332the use of gravels on the surface has the following things to do although substation switchyard grounding is very low in the range of 05 to 5 ohm to provide low resistance path the entire ground is filled with gravels to provide a high resistance layer so that it can act as an insulation between our foot and the ground
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Stones in the substation is provided to reduce the step potential and touch potential when operators work on switch yard step and touch potential occurs due to the short circuit current flows on the conductor all the substation is provided with the good grounding system or low resistance path to the fault current therefore to provide the
Aug 12 2010nbsp018332after the cover soil is tamped a layer of crushed stone is laid the stone layer can be anywhere from 1 to 3 feet deep the stone is not there for architectural reasons the crushed stone bed provides an insulating buffer between workers and the mat the stone layers resistance is sometimes 3000 ohmsmeter or more between the worker and
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