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Joined: Jul 2005
Posts: 2
Junior Member
For all electrical power engener can visit new web site for electrical substation , tensformer, switchgear and protection at address

Joined: Mar 2005
Posts: 1,803
this site is all good technical info.

PS Guys check out the site! There's 3 pylons skipping for a start!

[This message has been edited by Webmaster (edited 07-27-2005).]

Wood work but can't!
Joined: Jul 2002
Posts: 8,443
Likes: 3
Welcome to ECN!,
Yes, this site is well worth a good look to anyone with Power Engineering or HV Systems in mind.
Thanks for the link!. [Linked Image]

[This message has been edited by Webmaster (edited 07-27-2005).]

Joined: May 2005
Posts: 54
a very informative and good site, i fully reccomend it for anyone who wishes a bit more information on power transfer and control.


[This message has been edited by Webmaster (edited 07-27-2005).]

Joined: Oct 2000
Posts: 3,674
Likes: 2
(some unrelated comments removed to get back on topic - sorry for the disruption)

Joined: May 2003
Posts: 2,876
e57 Offline
Ok this is darn cool...

[Linked Image from]

Mark Heller
"Well - I oughta....." -Jackie Gleason
Joined: Dec 2000
Posts: 4,291
Welcome and Thank You!
Great Information!

Joined: Jul 2002
Posts: 8,443
Likes: 3
Having had the chance to sit down and have a good look at the offered material, this is a site worthy of being linked through here.
Even the Transformer basics are very easy to understand.
Wish I'd had something like this during my training as a Line Mechanic. [Linked Image]

Joined: Jul 2004
Posts: 49
I had never heard of using a gas detector to detect faults on transformer. He must be using it to detect long-term events, such as arcing inside the tap changer of the transformer transformer. I would think a high speed differential relay would be a better choice to protect a transformer from internal fault current events.
I used to run the oil analysis program for about 100 transformers in a pulp and paper mill. One thing we always took action on was a transformer that was wet, ie had a hydrogen present in that 200 ppm range. I saw several units that failed above that range.
Good info, I want to look it over some more when I have time.

Joined: Jul 2002
Posts: 8,443
Likes: 3
You would also have to think of the Hysteresis current of that relay coil upsetting the response time, as in a slight delay.
It's a good call on the Gas Detector. [Linked Image]

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