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2 Phase Transformer Schematics

Scott35

Broom PusherandMember

Registered:10/19/00Posts: 2610Loc: Anaheim,CA. USA

These Schematics have been brought over from the "Theory Area" for your convenience.

2 Phase 4 Wire Transformer Connection.

Related Text From Original Post

Topic: 2 phase 4 wire schematic - last in the seriesScott35Moderatorposted 05-11-2001 03:42 AM

This final schematic demonstrates one of the methods of deriving 2 phase systems from a 3 phase source.Notice the 86% tapped coils and the 50% tapped coils.This is known as the "Taylor Method". I know of one other 3 phase closed delta primary to 2 phase 4 wireconnection - which uses 3 transformers. It's similar to this, just tap points are swapped around a bit.

Mostly the 2 phase setups were done by means of an open delta "Tee" connection for the primary, then the 2phase 3/4 wire output was also connected in a "Tee" arrangement [AKA Scott - TEE connection. Funny, thatname seems oddly familiar to me ].An open delta Tee connection is done with tapped windings, whereas the more familiar open delta Veeconnection is just a closed delta with 2 transformers instead of 3.

The outputs here are "Phase 1" [two wires] and "Phase 2" [also a set of two wires].Between the conductors of a certain Phase, there is a potential [voltage], and each one is a stand-alonephasor [phase].Phase offset between Phase 1 and Phase 2 is 90 degrees.

This is the infamous 2 phase system - which a simple 1 phase system gets mistakenly quoted as being

Scott SET - the bringer of antiquated AC power systems

my edit is towards incorrect labels on phases - only noticed after posting -

[This message has been edited by Scott35 (edited 05-11-2001).]

2 Phase 4 Wire "Tee" Connections.

Related Text From Original Post

Topic: 2 phase xformer detail 1

Pgina 1 de 22 Phase Transformer Schematics - ECN Electrical Forums

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Scott35Moderatorposted 05-18-2001 09:37 PM

Here's a 2 phase 4 wire "Tee" connection, using two transformers and powered by an open delta Tee 3 phaseprimary connection.

Scott SET

2 Phase 3 Wire "Tee" Connections.

Related Text From Original Post

Topic: 2 phase xformer detail 2Scott35Moderatorposted 05-18-2001 09:41 PM

Here's another 2 phase setup, just this one is a 3 wire connection. The common conductor is grounded in thisschematic.Pictorials show what the legend schematics would look like and how they connect to make this arrangement.Once again, this is via a 3 phase open delta Tee connected primary.

Scott SET

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_________________________Scott " 35 " ThompsonJust Say NO To Green Eggs And Ham!

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