|
1 members (Scott35),
235
guests, and
27
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
|
Joined: Jul 2002
Posts: 8,443 Likes: 3
Member
|
Paul,
Is the primary side of the Xformer fused
at all?.
Over here, we have all transformers,
connected to the Network(National Grid),
supplied through DDO (Dominion-Drop-Out)
fuses, these are a high voltage fuse,
which when it 'blows', will drop and hang
downwards, to make replacement easier,
and also identification of a faulty
circuit, a lot easier, especially at night.
These types of fuses are used on all
take-off points, from 3.3kV,6.6kV and 11kV
lines, normally they have a maximum current
rating of 10 amperes.
You want to replace one of these, with a
fault still in the Xformer, have never
done it myself, but I have heard from those that have, apparently,it rained fire.
|
|
|
|
|
Joined: Aug 2001
Posts: 7,520
OP
Member
|
The only 11kV system I've worked with was a private facility (GPO/British Telecom), so I'm afraid I don't have a great deal of knowledge on the HV distribution side of things.
As far as I can tell though, there are no primary fuses on any of the 11kV-to-240/415V pole transformers.
|
|
|
|
|
Joined: Jul 2002
Posts: 22
Member
|
there are no primary fuses on any of the 11kV-to-240/415V pole transformers.
Aha...that'll be why they explode (round here) and set fire to things
|
|
|
|
|
Joined: May 2002
Posts: 382
Member
|
Trumpy, Your DDO drop fuses sound exactly like those used in South Africa. One could always tell which one had blown. Worked as good isolators using a fibre-glass pole and hook.
[This message has been edited by Hutch (edited 09-08-2002).]
|
|
|
|
|
Joined: Aug 2001
Posts: 7,520
OP
Member
|
Chris,
I don't recall exploding transformers where I lived in Cornwall, but we had fairly frequent outages during the winter. If I remember correctly, we took power from a major sub-station at, I believe, Indian Queens (that always struck me as being a very non-British-sounding place name!).
I don't know if any more distribution has been put underground since then and improved the situation somewhat -- I left in 1986.
|
|
|
|
|
Joined: Jul 2002
Posts: 22
Member
|
Thnx for the Email. >I don't recall exploding transformers >where I lived in Cornwall, but we had >fairly frequent outages during the winter. We suffer badly from winter outages still - millions of Starlings roosting on lines at Marazion, goes on from 4:30 till about 6:00...the sky literally turns black when they arrive - an amazing sight. >If I remember correctly, we took power >from a major sub-station at, I believe, >Indian Queens (that always struck me as >being a very non-British-sounding place >name!). The story goes that Indian Queens is reputedly named after Pocahontas, the American Indian princess, who visited England in 1616 with her husband, John Rolfe, a colonist. She died here a year later at just 23 years of age. >I don't know if any more distribution has >been put underground since then and >improved the situation somewhat -- I left >in 1986. Mostly overhead - the only underground work here has been the laying of vast amounts of communications cable which I'd bet ends up at Goonhilly or possibly at all the American comms places down here. Got your Milwaukee drill yet - if not CPC have just got them in their catalogue www.cpc.co.uk or 08701 20 25 30 they are a subsidiary of Farnell (similar range) but cheaper and also sell spares for white/brown goods. Chris
|
|
|
|
|
Joined: Aug 2001
Posts: 7,520
OP
Member
|
I used to go down to Marazion occasionally; went across to St. Michael's Mount a couple of times, and remember getting my feet wet trying to beat the tide once!
I haven't ordered the drill yet; I've been waiting to see if there was anything else to order at the same time to combine the shipping charges. I didn't realize there were any U.K. firms handling Milwaukee products. I'll check that site out -- Thanks.
|
|
|
|
|
Joined: Nov 2000
Posts: 2,236 Likes: 1
Member
|
Living just south of Pocahontas County, WV...
I thought she married John Smith?
Or was that just the Disney version of history?
*walks away embarrassed by my ignorance...*
-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI
|
|
|
|
|
Joined: Aug 2001
Posts: 7,520
OP
Member
|
Hey Virgil,
I meant to mention that as I remember seeing Pocahontas Co. in my road atlas and in a WV Tourist Guide.
Looks from the map as though it's a nice sparsely populated county up in them thar hills.
|
|
|
|
|
Joined: Jul 2002
Posts: 8,443 Likes: 3
Member
|
Hey Guys,
Just to get back to the topic,
The only reason why I mentioned Lineside
fuses, was because, not only do our
Supply Regulations require them,
but, locally, we have a problem, with
Sea-birds looking to roost upon the
Xformers(being warm), but they get their
wings caught in the feeder wires, fed from
the DDO fuse, to the Xformer.
This only happens, when the sea is very
rough, thankfully this only happens a
few times a year.
|
|
|
|
Posts: 57
Joined: August 2003
|
|
|
|
