Inter-Connection of Three Phases

  1. Home
  2. /
  3. Inter-Connection of Three Phases

In every 3 phase system, individual coils have 2 terminals. The first one denotes ‘start’ and expressed as ‘S,’ whereas the latter depicts ‘finish’ and expressed via ‘F.’In case, if separate phases are linked to the individual load circuit, the resultant that we can expect is a 3 phase system which is non-interlinked.

In these types of systems, every individual circuit requires 2 conductors. So, in 3 phase system, the requirement will be 6 conductors. All in all, these requirements make the entire system expensive and complex. Therefore, we can accept the fact that all of these 3 phases are gene interlinked whose outcome is experienced as a considerable saving of copper.


For interconnection, there are 2 generalized methods.

  • Delta or Mesh connection (∆)
  • Wye or Star connection (Y)


Links of Previous Main Topic:-

Links of Next Electrical Engineering Topics:-

Submit Homework

Click or drag files to this area to upload. You can upload up to 10 files.
Max upload size: 50 MB/file

11 + 6 =

How It Works

Customer Reviews

Ratings based on 510 customer reviews.
Trustpilot ratings
Google Ratings