Previous in Forum: Smart Plant Instrumentation (intools)   Next in Forum: Turbine Trip and Turbine Water Induction
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
2 comments
Rate Comments: Nested
Anonymous Poster

Instrument Cable Laying

01/23/2011 2:31 AM

What should be the air gap in between an Instrument (profibus / modbus cable & Analog signal cable) cables and the Medium Voltage (3.3KV) cables, if the two cables laid in the same route above ground but in different cable tray ??
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Good Answers:

These comments received enough positive votes to make them "good answers".
mdalimukhtar
Participant

Join Date: Jan 2011
Posts: 1
#1

Re: Instrument Cable Laying

01/23/2011 7:14 AM

Really is this still required ??? It is a screen cable !!!!!!!!!!!!
Reply
4
Carl_E
Power-User

Join Date: Nov 2009
Posts: 335
Good Answers: 63
#2

Re: Instrument Cable Laying

01/23/2011 2:13 PM

caveat emptor (for what it's worth), from a sourcing website spec:
http://instrumentationcable.blogspot.com/2009/03/instrumentation-cable.html

10.08.00 INSTRUMENTATION CABLE INSTALLATION AND ROUTING

10.01.00 All cables assigned to a particular duct/conduit shall be grouped and pulled in simultaneously

using cable grips and suitable lubricants. Cables removed from one duct/conduit shall not be reused

without approval of Employer.

10.02.00 Cables shall be segregated as per IEEE Std.-422 and IEEE 524 (1992) In vertically stacked

trays, the higher voltage cable shall be in higher position and instrumentation cable shall be in bottom

tier of the tray stack. The distance between instrumentation cables and those of other system shall be

as follows:

From 11 kV/6.6 kV/3.3 kV tray system - 914 mm
From 415V tray system - 610 mm
From control cable tray system - 305 mm
Reply Good Answer (Score 4)
No more Good Answers.
Reply to Forum Thread
Have a Different Question?
2 comments

Good Answers:

These comments received enough positive votes to make them "good answers".

Previous in Forum: Smart Plant Instrumentation (intools)   Next in Forum: Turbine Trip and Turbine Water Induction

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Instrumentation:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (60 right now)
Show Members
Advertisement