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Article "Bonding with signal reference grids" EC&M, December 1, 1999 has the following recommendations: "The AC current on any portion of the SRG should not exceed 250mA. AC current exceeding this level will cause voltages that can affect data signals. • Measure the equipment-grounding...

ScottyUK, You are right. Best regards.

The grounding infrastructure shall be in compliance with IEEE Standard 1100, TIA-942 and TIA-607 requirements. See article G.5.1.6 of TIA-942 for the particular equipment bonding requirements.

What equipment? Please see SEMI F47 "Specification for Semiconductor Processing Equipment Voltage Sag Immunity"

You may be interested in "Electrical Systems Analysis and Design for Industrial Plants" by Irwin Lazar (ISBN 0-07-036789-2).

Please review the attachment. Best regards.http://files.engineering.com/getfile.aspx?folder=76e9c4e2-dc27-47c4-a361-840c846a8619&file=Generator_ground_fault_relay.pdf

The UTP cable should be installed some distance away from an EMI sources. Cabling pathways standard, EIA-569 table 4.8-5 provides those guidelines (source LANs/cabling-faq that refers to Northern Telecom, doc # IBDN-UM-9105, 1991): Minimum Separation Distance from Power Source...

Please reviewthe following document.You may find it on the web. Electrical Engineering Preliminary Considerations Military Handbook.

You may consider GFA300 ground fault relay between generator neutral and ground.

https://ifs.ul.com/lps/lightningprotectionhome.nsf/LookupDocsByID/5949FCF483D3056E8625720A006EF4B8/$FILE/LPS%20Calculation%20%20Aid%2096A%20&%20NFPA%20780%20Revised%206-1-05.xls?OpenElement

Please review the attached file..http://files.engineering.com/getfile.aspx?folder=454f18fb-189b-432f-b851-bb197db57fbf&file=Scann001.PDF

Please review the attached file which shows the neutral bonding requirements.http://files.engineering.com/getfile.aspx?folder=a1f0c66d-41ab-483b-bbd3-ca4967784394&file=ATS_Generator_grounding.pdf

Please review http://www.electrician2.com/electa1/ground2.html

Please see the attached article.http://files.engineering.com/getfile.aspx?folder=7ad3b70e-cf68-4292-8d12-748f04a91a71&file=Reverse_feed_transformer.PDF

http://www.arcadvisor.com/faq/dc_direct_current_arc.html

Please make the appropriate correction in your copy of TIA based on the response from the Chair of TIA 9422: “I spoke at length with my colleague who worked with me to develop the electrical section of Table 10. The 83 ft is a typo. The correct requirement is ‘Individual 87G ground fault...

is it possible to use autotransformer for this application?

TIA Standard TIA-942 "Telecommunications Infrastructure Standard for Data Centers has Table 10: Tiering reference guide (electrical). Under Standby Generator System there is a line "Individual 83 ft. Ground Fault Protection for each Generator" Does anybody knows the meaning of 83 ft in case of...

Per NFPA 110-5.6.5.6 a remote manual stop is required for Emergency Power Supply systems.The system you described is a stanby optional system, therefore a remote manual stop is not required.

Please see the attached article "Equations help determine largest motors that can be connected on utility lines" by D.A. Lentz in Plant Engineering, Sept 1965, p.47. http://files.engineering.com/getfile.aspx?folder=b9a807f2-2b27-40ae-9b57-e42347e2ae42&file=Scann001.PDF