ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Don't you buy this stuff
by HotLine1. 05/22/18 03:52 PM
Furnace igniter leaking noise to stereo
by Haligan. 05/21/18 03:28 PM
480 Delta
by ghost307. 05/21/18 10:38 AM
turning down possible problem customer
by HotLine1. 05/21/18 07:53 AM
electircal ageing test on IPC
by HotLine1. 05/14/18 09:42 AM
New in the Gallery:
Plug terminals
Housebilding DIY wiring
Who's Online Now
0 registered members (), 4 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
11kv systems #213387
04/20/14 01:55 PM
04/20/14 01:55 PM
A
ANNEMARIE  Offline OP
Member
Joined: Oct 2012
Posts: 39
DORSET UK
Hi i would like to know in the UK 11kv system there are no fuses used ever is that right? is it just air circuit brakers and section switches and is the same true for underground systems i am curiose thanks Happy easter from annemarie (and Hollie)

Test Equipment:
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Re: 11kv systems [Re: ANNEMARIE] #213388
04/20/14 02:52 PM
04/20/14 02:52 PM
T
Tesla  Offline
Member
Joined: Jun 2004
Posts: 1,273
Sacramento, CA
https://www.rwe.com/web/cms/en/286414/rwe-npower/about-us/our-history/structure-of-industry/

"RWE npower participates in the generation and supply segments of the electricity industry.

Up to March 2005 the electricity industries of Scotland, Northern Ireland and England and Wales operated independently, although interconnectors joined all three grid systems together. From April 2005 under the British Electricity Trading and Transmission Arrangements (BETTA), introduced in the Energy Act 2004, the electricity systems of England and Wales and Scotland have been integrated."

These have to be the guys to contact.

It's a sure bet that the monopolist is unifying all technical standards.

RWE would have to know if any legacy fuses remain in their distribution grid.

"...no fuses used ever..."

Is pretty absolute.

You need to go to the source if you want to have any confidence in an answer.


Tesla
Re: 11kv systems [Re: ANNEMARIE] #213412
04/25/14 01:20 AM
04/25/14 01:20 AM
Trumpy  Offline

Member
Joined: Jul 2002
Posts: 8,236
SI,New Zealand
Originally Posted by ANNEMARIE
Hi i would like to know in the UK 11kv system there are no fuses used ever is that right? is it just air circuit brakers and section switches and is the same true for underground systems.


Hi AnnMarie,
I'm not sure where you got that idea from, but there are always fuses in an 11kV distribution system.
These fuses protect lines and transformers and are normally in the form of Drop-Out fuses mounted up on the cross-arms of power poles where a new section of circuit starts.

Re: 11kv systems [Re: ANNEMARIE] #215542
05/30/15 10:41 PM
05/30/15 10:41 PM
R
RODALCO  Offline
Member
Joined: Dec 2005
Posts: 856
Titirangi, Akld, New Zealand
I remembered my password again, sorry to be away for so long.
I have been reading on and off topics but was unable to reply.
I am still alive and actively involved in electrical work on the Auckland Network.
11 kV take off circuits are usually fused. In case of a single transformator, dedicated fuses are used, often 50 % over the nominal rating. e.g a 100 kVA TX draws 5.5 Amps at 11 kV per phase. These TX's are fused with 8 or 10 Amp ddo's or HRC fuses in an underground network.
A different situation occurs in a street fed from two directions with an open point in the middle. There could be 2 or 3 transformers either side of the open point. Fuses are heavily overrated in this case to allow all the transformers to be fed from one end. I have seen 100 kVA TX's fused with 60 Amp HRC fuses, which means no protection for the TX.


The product of rotation, excitation and flux produces electricty.
Re: 11kv systems [Re: ANNEMARIE] #215620
06/12/15 03:29 PM
06/12/15 03:29 PM
A
annemarie1  Offline
Member
Joined: Mar 2015
Posts: 70
england
Hey RODALCO nice to have you back Ive seen your YT vids very intetesting thanks to you and everyone for all your reply and information. I thought 11Kv was infused because I couldn't see anything that looked like a fuse but next time I'm out in the sticks I will have a closer look


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
SafetyWired
SafetyWired
Pa, USA
Posts: 44
Joined: July 2013
Show All Member Profiles 
Top Posters(30 Days)
twh 12
Popular Topics(Views)
246,870 Are you busy
184,220 Re: Forum
173,459 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.016s Queries: 15 (0.003s) Memory: 0.9691 MB (Peak: 1.1107 MB) Zlib enabled. Server Time: 2018-05-22 23:39:00 UTC