Three-phase two speed A.C. motor

Electricity: motive power systems – Synchronous motor systems – Pole changing motor winding circuits

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

318773, H02P 748

Patent

active

042219990

ABSTRACT:
A three-phase motor is wound with three spaced phase windings each having first and second multiple section windings. The second winding sections of each are connected in series. The first winding has one end of all three phases connected in common. The second winding has one end connected to the common intermediate connection of the first winding sections. The outer ends of the windings are connected to a two-speed switch having two different positions for alternate direct connection of the two windings to incoming phase lines. In one position, both sections are in circuit with the three oppposite ends of the one winding connected to each other to form a second common connection. In second position, the second windings is disconnected and the first winding sections are connected in series in a star circuit, with the current flow in the two sections of each winding reversed from the first speed connection. The switch includes five separate switches, three of which have a common pole connected to a phase line and an associated high speed contact and low speed contact connected to the windings and two of which have interconnected common poles and associated contacts to the terminal ends of the second winding.

REFERENCES:
patent: 3070734 (1962-12-01), Rawcliffe
patent: 3175143 (1965-03-01), Rawcliffe
patent: 3197686 (1965-07-01), Rawcliffe et al.
patent: 3233159 (1966-02-01), Rawcliffe

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Three-phase two speed A.C. motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Three-phase two speed A.C. motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-phase two speed A.C. motor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2226269

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.