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#144549 - 01/01/06 01:00 AM S.W.E.R.  
RODALCO  Offline
Member
Joined: Dec 2005
Posts: 854
Titirangi, Akld, New Zealand
On my travels upnorth to Kaitaia I saw the SWER system near the Mangamuka ranges hence this topic.

This is 11 kV 2 phase to 11 kV 1 phase or known as the washing line.

I'm aware of SWER systems in Piopio by National Park area and Tapu area in the Coromandel.

What other SWER systems are around in NZ or overseas ? Also what voltage levels are used?

Awaiting any replies

HAPPY NEW YEAR [Linked Image] [Linked Image] [Linked Image] anyway. Ray


The product of rotation, excitation and flux produces electricty.

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#144550 - 01/01/06 04:22 AM Re: S.W.E.R.  
briselec  Offline
Member
Joined: Dec 2005
Posts: 141
Brisbane, Australia
This is a good article about the use of SWER in Australia and the voltages used -
http://tdworld.com/mag/power_one_wire_enough/


#144551 - 01/01/06 05:48 AM Re: S.W.E.R.  
RODALCO  Offline
Member
Joined: Dec 2005
Posts: 854
Titirangi, Akld, New Zealand
Many thanks briselec That's an excellent link you inserted there. Welcome to the forum. [Linked Image]
Cheers Ray


The product of rotation, excitation and flux produces electricty.

#144552 - 01/02/06 04:46 AM Re: S.W.E.R.  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
Ahh,
The Clothes-Line!. [Linked Image]
At one time parts of Mid and South Canterbury used to be riddled with these systems.
However, because of the increase of loads caused by the Dairy farms and irrigation plants flung all over the place, the Network down here has had to be upgraded to a full-sized 3 phase 33 or 66kV network, where there was originally only a single 11 or 22kV SWER line and a heap of step-down transformers along it's length.
As far as the SWER line itself went here, they were only of the single line variety.
You very rarely see them here these days, apart from the really isolated parts of the Network. [Linked Image]


#144553 - 01/02/06 01:12 PM Re: S.W.E.R.  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
You might also like to browse this thread and the links therein:
https://www.electrical-contractor.net/ubb/Forum1/HTML/001230.html

(Wow, was that really 3 years ago?! [Linked Image] )


#144554 - 01/02/06 06:50 PM Re: S.W.E.R.  
aussie240  Offline
Member
Joined: Jul 2005
Posts: 223
Blue Mountains, NSW, Australia
There was an article in Electronics Australia in 1979...the then magazine editor had assumed that SWER was no longer but a rash of readers letters corrected that. There are plenty of SWER lines operating not that far from me. I think they're 11kV.


#144555 - 01/03/06 03:12 AM Re: S.W.E.R.  
RODALCO  Offline
Member
Joined: Dec 2005
Posts: 854
Titirangi, Akld, New Zealand
Thanks Pauluk I have read quite a few of the older topics but not as far as 2002 yet, so that link is great info.

I have a few piccies from an 2 phase to 1 phase SWER transformer in the Mangamuka's.
I ask Trumpy to put the photo's on , but SWER is well alive in New Zealand in 2006. [Linked Image]

Next month I'm in Coromandel for holiday and see if SWER still in use overthere too.


The product of rotation, excitation and flux produces electricty.

#144556 - 01/03/06 04:07 AM Re: S.W.E.R.  
briselec  Offline
Member
Joined: Dec 2005
Posts: 141
Brisbane, Australia
I've read there is over 190,000km of SWER system in use in rural Australia.


#144557 - 01/03/06 08:33 AM Re: S.W.E.R.  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
Here they are Ray:
Quote
I took these SWER transformer pics up north in the Mangamuka's, this is one of the newer single tank 2Ø to 1Ø 'isolating" transformers.

Voltage level 11kV to 11kV SWER, not sure what the second tapchanger is for. Also the single phase 'gas' switch in series with the ddo. whether that is remotely contolled or not. You may know from your South Island Experience.


[Linked Image]


[Linked Image]


[Linked Image]

{Message edited to add info, it's late here}

[This message has been edited by Trumpy (edited 01-03-2006).]


#144558 - 01/04/06 06:04 AM Re: S.W.E.R.  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
LOL Ray,
I haven't seen poles like that since I left Temuka!. [Linked Image]
Quote
Also the single phase 'gas' switch in series with the ddo. whether that is remotely controlled or not

No, if it was remotely controlled it would have a radio interface unit on it.
The earthing system for the transformer and lightning arrestors is a bit rough.
One thing that did catch my attention as I was uploading these pics, is that DDO fuseholder mount on the left side, above the transformer is sitting there by the skin of it's teeth. [Linked Image]
One final thing, this job wasn't done yesterday, the fuseholders are the old kind that NZ Insulators in Temuka used to manufacture.
I used to find, as a kid, a pile of broken insulators down by the river (where they used to dump thier seconds), they were an ideal size for weighing down your eel-pots. [Linked Image]


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