Previous in Forum: Reducing Torque Load of Spot Welding Machines   Next in Forum: XLPE Cable
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
4 comments
Rate Comments: Nested
Anonymous Poster #1

Medium Voltage and Low Voltage Cable

04/22/2011 2:31 AM

hello, I just need to know please why medium voltage cables are usually 3 core ones (without neutral and earth cores) and why low voltage cables as outgoing of secondary of transformers are withoutearth core?
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#1

Re: Medium Voltage and Low Voltage Cable

04/22/2011 2:38 AM

Is this really true?

__________________
 In vino veritas; in cervisia carmen; in aqua E. coli.
Reply
hien.nguyenquoc
Power-User
Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Electrical Engineering - New Member Engineering Fields - Construction Engineering - New Member

Join Date: Sep 2009
Location: BH, Vietnam
Posts: 435
Good Answers: 1
#2

Re: Medium Voltage and Low Voltage Cable

04/22/2011 5:01 AM

This is 4-core underground MV cable sample.

The earthing wire coming out from transformer secondary side normally is from the transformer frame. (where this earth point can be internally or externally connected to neutral point inside the transformer). So, you will not see they are coming out at the same level with the other cables since the connection points normally is near the bottom of the transformer.

__________________
 Anything that can go wrong, will go wrong
Reply
harry potter
Power-User

Join Date: Nov 2008
Location: India
Posts: 333
Good Answers: 6
#3

Re: Medium Voltage and Low Voltage Cable

04/23/2011 7:49 AM

dear,

Why working with prejudiced mind ?

You just ask for the cables suitable for the supply mains. - wether 3 phase 3 wire, 3 phase 4 wire or 3 phase 5 wire ?

__________________
 Exploring the Science of Electricity
Reply
electricalexpert65
Guru

Join Date: Oct 2009
Posts: 2061
Good Answers: 169
#4

Re: Medium Voltage and Low Voltage Cable

04/25/2011 7:17 AM

It all depends upon what is the type of the network - TN (TN-C or TN-S or TN-C-S) or TT or IT.
Reply
Reply to Forum Thread
Have a Different Question?
4 comments
Copy to Clipboard

Users who posted comments:

electricalexpert65 (1); harry potter (1); hien.nguyenquoc (1); Tornado (1)

Previous in Forum: Reducing Torque Load of Spot Welding Machines   Next in Forum: XLPE Cable

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
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