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Anonymous Poster

Instrument Groundings

03/02/2008 9:43 PM

Anyoune knows how to design proper groundings for the instruments ( PLC, DCS instruments). Can I connect it to the existing electrical groundings. Thanks
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cnpower
Guru
Engineering Fields - Control Engineering - New Member China - Member - New Member

Join Date: Sep 2006
Location: CHINA
Posts: 2945
Good Answers: 14
#1

Re: Instrument Groundings

03/03/2008 5:47 AM

you can or cannt

it depends on the instrument structure.
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Anonymous Poster
#2

Re: Instrument Groundings

03/03/2008 7:40 AM

no u must have to provide different earthing of COPPER. with min. resistance of 0.1 ohm
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Anonymous Poster
#3

Re: Instrument Groundings

03/04/2008 1:44 AM

electronic equipments (PLC, DCS, etc.) should have a separately derived grounding system (i.e. grounding electrode). Usually it has delta connection to lower the resistance.

"no risk, no loose, no grow"
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jmueller
Guru

Join Date: Jul 2006
Location: Eastern Kansas USA
Posts: 1503
Good Answers: 128
#4

Re: Instrument Groundings

03/04/2008 1:51 AM

See my comment for this identical question in the other thread. --JMM
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olivinak
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Join Date: Aug 2007
Location: Heilonjang China. 2 blocks from you
Posts: 109
Good Answers: 5
#5

Re: Instrument Groundings

04/02/2008 11:04 AM

Huullo, its better to check on the manufactures recommendation about the earthing of the equip,or you want idears about the whole thing?

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