Mine ground systems 1

[tulum]

I am re-posting this thread from the power engineering forum ...

Hello,

I am looking for any articles/comments on mine grounding systems. Since there are many mining communities in the vicinity of my city, I would like to get familier with mining electrics.

I read an article that said Mines have a SYSTEM ground (ground grid - main susbstation) on the surface of the mine, and a separate grounding system called the SAFETY ground for the underground portion of the mine. Is this always true?

Another thing I came across was there is a standard in the mines to provide a ground bus inside surface control houses (switchgear inside a building) that is mounted on 600v insulators. What is the purpose of this? All the switchgear circuits are tied to this bus, however the switchgear circuits are also bonded to the building...

Any suggestions or article references appreciated.

Regards,
TULUM

 

[sprintcar]

You might start here

http://www.smenet.org/digital_library/library_mining.cfm

http://www.msha.gov/REGS/ACT/ACTTC.HTM

Keep the wheels on the ground
Bob

 

[BL1]

TULUM,
THIS MIGHT HELP.CHECK OUT MSHA HANDBOOK ON THEIR WEBSITE
AT

http://WWW.MSHA.GOV.UNDER

SEARCH USE PH93-V-7.THIS SHOULD BE THEIR ELECTRICAL INSPECTORS GUIDE LINES.HOPE THIS IS OF SOME BENEFIT TO YOU.BEST REGARDS.

BL1(MINING)

 

[tulum]

Thanks guys..

BL1 Great link... thanks...

Regards,
TULUM