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shahzad
Active Contributor

Join Date: Jul 2008
Posts: 16

Electrical Power Cables Laying

11/22/2010 12:05 AM

Hi,

i am working in a combined cycle power plant,Its in commisioning phase.Here different sized cables of following specs i.e; 4 and 3 Core Stranded Cables Cu/XLPE/SWA/PVC-LSF: 600-1000V IEC-502,3 Core Stranded MV - Cables
Cu/XLPE/SWA/PVC-LSF: 6.35/11KV IEC-502,1 Core Stranded Cables Cu/XLPE/PVC-LSF: 600-1000V IEC-502 have been used for different equipments.Firstly these were laid in cable trenches.In rainy season cable trenches became full of water so to avoid water accumulation EPC contractor has filled the trenches with sand.Please

  • explain is it recommended/safe practice to fill the cable trenches with sand by any ieee/iec/ansi standard.also specify the standard
  • Please elaborate the effects (good/bad) on cable insulation,life and integrity with some supporting ieee/iec/ansi standard
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Anonymous Poster
#1

Re: Electrical Power Cables laying

11/22/2010 4:44 AM

we will think about it after commissioning. Now let complete the commsssioning ..............
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Anonymous Poster
#2

Re: Electrical Power Cables laying

11/22/2010 7:03 AM

Hi,

please advise,

1.) what is the length of the cable

2.) what is the services

3.) what is supply voltage

Regard's
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shahzad
Active Contributor

Join Date: Jul 2008
Posts: 16
#4
In reply to #2

Re: Electrical Power Cables laying

11/29/2010 11:05 PM

Dear sorry for late reply,

length of the cable

Various lengths of cable used ranging from 10meter to 1000 meters

services

to supply switchgears from transformers,to supply motors from switchgears etc

supply voltage

6.6kV and 400V
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PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#3

Re: Electrical Power Cables Laying

11/22/2010 10:09 AM

Well, British Standard 7671 has a lot to say on cable sizing, loading and installation techniques...

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shahzad
Active Contributor

Join Date: Jul 2008
Posts: 16
#5
In reply to #3

Re: Electrical Power Cables Laying

11/29/2010 11:14 PM

Dear Sir,

Thanks for reply

  • Can it British Standard 7671 be provided by you or could you please refer some site to get it free?
  • It will be helpful for me if you could please comment against my concerns with arguments because it will take time to read the standard thoroughly
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PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#6
In reply to #5

Re: Electrical Power Cables Laying

06/19/2023 6:17 AM

In an ideal world, standards need to be taken into account before work starts. That's called Engineering!

Standards take time and effort to produce and publish. The price is there to value that effort.

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