The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Calling all Non-US members!! (Non-US only)
by aussie240
Today at 02:39 AM
Photo Upload Tutorial
by DanK
Yesterday at 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 9
Texas_Ranger 8
sparkyinak 7
Trumpy 6
Who's Online
0 registered (), 109 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#128224 - 10/17/02 09:53 PM Discussion- Zig-Zag Grounding Transformers
Scott35 Offline

Broom Pusher and
Member

Registered: 10/19/00
Posts: 2724
Loc: Anaheim, CA. USA
This thread can be used to discuss the drawings posted in the Technical Reference area intitled:

Zig-Zag Grounding Transformers

Feel free to ask question(s), make comments or discuss this topic in detail.

If you would like these or other drawings from the Technical Reference area sent to you as Raster Images [.gif, .jpg, .bmp], as Metafiles [.wmf], or as AutoCAD R14 files [.dwg], contact me via e-mail or post a message in this thread.
Please specify which type of file format you would like, along with the name of drawing / text .
The images / text will be sent via ".ZIP" compressed file, using PKZIP 2.60 for Windows / DOS. If needed, I can send as Self Extracting Zip files, which work fine in Windows 95, 98, Me, NT4 and 2000 Enviroments, but have not worked correctly under Windows XP as of 08.01.2002.

Let me know if these drawings are helpful or if they suck!

Scott S.E.T.

[This message has been edited by Scott35 (edited 10-18-2002).]
_________________________
Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!

Top
#128225 - 12/02/02 02:47 PM Re: Discussion- Zig-Zag Grounding Transformers
sparky Offline
Member

Registered: 10/18/00
Posts: 5545
a noodle is created, so the definition of SDS comes to mind, and the 'no direct electrical connection' angle commonly debated.

Top
#128226 - 12/03/02 09:49 AM Re: Discussion- Zig-Zag Grounding Transformers
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
It may be worth noting that the voltage across each inividual coil in a non-fault condition is 0.5774 of the phase-to-neutral voltage, so, for 480Y/277V, each coil operates at 160 volts.

Top
#128227 - 02/07/07 03:00 PM Re: Discussion- Zig-Zag Grounding Transformers
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
Scott,
Those are very good diagrams, even an idiot like me can see how the Zig-Zag connection works!.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals