CR4 - The Engineer's Place for News and Discussion®

Previous in Forum: Unit Ratio Transformer   Next in Forum: Intelligent Energy Management Solutions?
Close

Comments Format:






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:







10 comments
Power-User
Engineering Fields - Electrical Engineering - New Member

Join Date: Dec 2009
Posts: 243

1100 Volts Grade Power and Control Cable Use

01/15/2012 12:54 AM

Hi,

Can anybody tell me where in a hydroelectric plant 1100 volts grade power and control cable is used?

Regards,

(seasons greetings!)

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Guru

Join Date: Mar 2007
Location: at the beach in Florida
Posts: 9807
Good Answers: 535
#1

Re: 1100 volts grade power and control cable use.

01/15/2012 1:02 AM

I don't know that that voltage is used anywhere, and control wiring or cable is everywhere...

__________________
Life is like riding a bicycle. To keep your balance you must keep moving. A.E.
Register to Reply
Guru

Join Date: Jun 2010
Location: srilanka
Posts: 2351
Good Answers: 5
#6
In reply to #1

Re: 1100 volts grade power and control cable use.

01/16/2012 12:27 AM

The cable manufacturer or the consultant can explain

__________________
pnaban
Register to Reply
Guru

Join Date: Jun 2010
Location: srilanka
Posts: 2351
Good Answers: 5
#2

Re: 1100 volts grade power and control cable use.

01/15/2012 3:01 AM

In 400V 3ph cables the peak value of V is 400x1.414=565.6,for 600V it is 600x1.414 =848.4V. To get 1100V there may be a safety factor. I have seen 300/500V wiring cable for LV wiring.

__________________
pnaban
Register to Reply
Guru

Join Date: Jun 2010
Location: srilanka
Posts: 2351
Good Answers: 5
#9
In reply to #2

Re: 1100 volts grade power and control cable use.

01/16/2012 6:07 AM

May be they applied a safety factor of 1.2

__________________
pnaban
Register to Reply
Guru
Engineering Fields - Electrical Engineering - New Member United Kingdom - Member - New Member Engineering Fields - Electromechanical Engineering - New Member

Join Date: Aug 2010
Location: Under the Major Oak
Posts: 3629
Good Answers: 143
#3

Re: 1100 volts grade power and control cable use.

01/15/2012 6:40 AM

Why don't you ask the people that designed you hydro power plant? Or are they feed up with your inane questions as well.

__________________
Pessimists are rarely disappointed.
Register to Reply
Active Contributor

Join Date: Sep 2010
Posts: 15
Good Answers: 2
#5
In reply to #3

Re: 1100 volts grade power and control cable use.

01/15/2012 10:50 PM

'feed up' ? and you're a Guru?

Register to Reply Score 2 for Off Topic
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Ketchikan, AK, USA
Posts: 15719
Good Answers: 615
#4

Re: 1100 Volts Grade Power and Control Cable Use.

01/15/2012 9:10 AM

For wiring up to 777 volts (≈ 1100/√2).

__________________
In vino veritas; in cervisia carmen; in aqua E. coli.
Register to Reply
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 22907
Good Answers: 591
#7

Re: 1100 Volts Grade Power and Control Cable Use

01/16/2012 3:24 AM

Yep. There should be a Cable Schedule document for each part of the installation. This document records the grade of cable used for each circuit. Find the document and look for cables listed in it that meet the 1100V grade criterion.

__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Guru

Join Date: Oct 2009
Posts: 2015
Good Answers: 163
#8

Re: 1100 Volts Grade Power and Control Cable Use

01/16/2012 5:19 AM

In all low voltage installations, where an insulated cable is needed

Register to Reply
Guru
Popular Science - Weaponology - New Member Fans of Old Computers - PDP 11 - New Member Technical Fields - Architecture - New Member Hobbies - HAM Radio - New Member

Join Date: Oct 2009
Location: Maine, USA
Posts: 1290
Good Answers: 34
#10

Re: 1100 Volts Grade Power and Control Cable Use

01/16/2012 8:09 AM

Maybe it's a typo and he meant 110 volts?

__________________
Tom - "Hoping my ship will come in before the dock rots!"
Register to Reply
Register to Reply 10 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Copy to Clipboard

Users who posted comments:

electricalexpert65 (1); ParadisoFinale (1); pnaban (3); PWSlack (1); SolarEagle (1); Tom_Consulting (1); TonyS (1); Tornado (1)

Previous in Forum: Unit Ratio Transformer   Next in Forum: Intelligent Energy Management Solutions?

Advertisement