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Active Contributor

Join Date: Jan 2010
Posts: 19

Why We Use Gravel in Switchyard and Transformer yard..

10/27/2010 12:35 AM

why we use gravel in switchyard and transformer yard..132kv switchyard.

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Guru
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#1

Re: why we use gravel in switchyard and transformer yard..

10/27/2010 1:29 AM

Just a guess: maybe to keep 6 feet weeds away?

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Guru
Engineering Fields - Electrical Engineering - New Member United Kingdom - Member - New Member Engineering Fields - Electromechanical Engineering - New Member

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#2

Re: why we use gravel in switchyard and transformer yard..

10/27/2010 3:37 AM

Drainage

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Guru

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#3
In reply to #2

Re: why we use gravel in switchyard and transformer yard..

10/27/2010 7:22 AM

A GA. No drainage permit needed if you don't pave, at least most places.

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Participant

Join Date: Oct 2010
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#4
In reply to #3

Re: why we use gravel in switchyard and transformer yard..

10/27/2010 12:03 PM

Gravel has many qualities which make it a preferred material for layering surfaces inside substations. Its high resistivity helps ensure that the step and touch potentials remain within limits.

It also prevents growth of weeds and small plants. It mitigates the chances of a fire in the event of oil spillage. It can be easily excavated. Besides, it also prevents the entry and movement of small animals and reptiles inside the substation.

Gravel also prevents the accumulation of water and the formation of puddles inside the substation.

All these features ensure that gravel is the material of choice for use in substations.

Source: electrotechnik.net

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Guru
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#5

Re: Why We Use Gravel in Switchyard and Transformer yard..

10/27/2010 2:10 PM

More information can be obtained using the CR4 search function (on the right hand side) as this question has been asked a few times previously on CR4.

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