ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Israel
by Texas_Ranger. 02/18/19 02:01 PM
250.104
by gfretwell. 02/16/19 01:08 PM
PurpleAir Recalls Power Supply Units
by Admin. 02/14/19 08:43 PM
Utility Company Programs
by katty81. 02/14/19 11:11 AM
AFDD's coming to the UK
by Trumpy. 02/14/19 12:29 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
1 registered members (Texas_Ranger), 8 guests, and 12 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Transformers & Feeders: 3Ph 4Wire Open Delta #193112
03/19/10 07:09 AM
03/19/10 07:09 AM
Scott35  Offline
OP
Broom Pusher and
Member
Joined: Oct 2000
Posts: 2,717
Anaheim, CA. USA
Transformers & Feeders: 3Ph 4Wire Open Delta

Five Drawings of Transformer Setups (Connection Schemes);
Primary and Secondary Feeders, Plus OCPDs and Panelboards for:
3 Phase 4 Wire Open Delta Transformers
(Two Voltage SDS)
NOTE: Click on Image to view Full-Sized Image

------------------------------------------------------------

Drawing 3PH4W-OD1: 480V x 120/240V 3 Phase 4 Wire Open Delta - Center Tap Grounded Neutral
(Max. Voltage To Ground = 200V, Nominal = 120V; With Grounded Conductor)
Single Panelboard fed by Secondary Feeders.
[Linked Image]

-----------------------------------------------------------

Drawing 3PH4W-OD2: 480V x 120/240V 3 Phase 4 Wire Open Delta - Center Tap Grounded Neutral
(Max. Voltage To Ground = 200V, Nominal = 120V; With Grounded Conductor)
Single Panelboard fed by Secondary Feeders, Additional Panelboard "Subfed".
[Linked Image]

-----------------------------------------------------------

Drawing 3PH4W-OD3: 480V x 120/240V 3 Phase 4 Wire Open Delta - Center Tap Grounded Neutral
(Max. Voltage To Ground = 200V, Nominal = 120V;, With Grounded Conductor)
Two Panelboards fed via Tapped Feeder.
[Linked Image]

-----------------------------------------------------------

Drawing 3PH4W-OD4: 480V x 120/240V 3 Phase 4 Wire Open Delta - Center Tap Grounded Neutral
(Max. Voltage To Ground = 200V, Nominal = 120V; With Grounded Conductor)
Two separate Panelboards fed by Secondary Feeders- each set derived from "X" Terminals.
[Linked Image]

-----------------------------------------------------------

Drawing 3PH4W-OD5: 480V x 120/240V 3 Phase 4 Wire Open Delta - Center Tap Grounded Neutral
(Max. Voltage To Ground = 200V, Nominal = 120V; With Grounded Conductor)
Distribution Panel fed by Secondary Feeders.
[Linked Image]

-----------------------------------------------------------------------------------------


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!
Test Equipment:
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Re: Transformers & Feeders: 3Ph 4Wire Open Delta [Re: Scott35] #193113
03/19/10 07:12 AM
03/19/10 07:12 AM
Scott35  Offline
OP
Broom Pusher and
Member
Joined: Oct 2000
Posts: 2,717
Anaheim, CA. USA
Description Text for above images:

Text #3: Two Voltage SDS - Primary & Secondary OCPDs
(Click on Image to view Full-Sized Image)
[Linked Image]


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!

Featured:

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

 

Member Spotlight
Trumpy
Trumpy
SI,New Zealand
Posts: 8,260
Joined: July 2002
Show All Member Profiles 
Top Posters(30 Days)
Admin 7
andey 3
Popular Topics(Views)
253,236 Are you busy
189,883 Re: Forum
179,588 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.021s Queries: 15 (0.004s) Memory: 0.9466 MB (Peak: 1.0642 MB) Zlib enabled. Server Time: 2019-02-18 20:55:12 UTC