Phase lead connector

• US 3,980,910 A
• Filed: 12/16/1974
• Issued: 09/14/1976
• Est. Priority Date: 12/16/1974
• Status: Expired due to Term

• Current Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Original Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Inventors: Steinebronn, Kurt H., Fidei, Frank P.
• Primary Examiner(s): Skudy, R.
• Application Number:
  US05/533,406
• Time in Patent Office: 638 Days
• Field of Search: 310/71, 310/162, 310/163, 310/165, 310/194, 310/260, 310/270, 310/271, 310/272, 310/273, 336/192, 336/107, 339/265, 339/266 G, 322/25
• US Class Current: 310/71
• CPC Class Codes: H01R 9/00 Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
• CPC Class Codes: H02K 3/505 for large machine windings, e.g. bar windings H02K3/51 takes precedence

Abstract

A connector assembly for joining gas-cooled phase leads of a dynamoelectric machine. First and second L-shaped plates connect each split end portion of a stator coil to a stator phase lead by means of screw bolts which join a shoulder portion of each plate with a crown portion of each plate. The opening defined by the interlocked crown and shoulder portions is adjustable to an exact fit with the conductor strands disposed therein by means of a slot in each shoulder portion which allows variable alignment with a tapped hole in the crown portion of each plate. After the screw bolts are tightened to a predetermined contact pressure, the conductor strands are soldered one to another and to the first and second connector plates.

Claims

1. In a dynamoelectric machine having a magnetic core member and a winding disposed in slots upon said core member, said winding including a plurality of conductors arranged in spaced apart relation on said core member and having end portions disposed adjacent to each other for connection to a phase lead, the combination with said winding of an improved connector for providing mechanical and electrical connection between selected ones of said conductor end portions and one or more of said phase leads, said combination comprising:

a first L-shaped plate having a shoulder portion and a crown portion extending at a right angle from said shoulder portion;

a second L-shaped plate having a shoulder portion and a crown portion extending at a right angle from said shoulder portion;

means joining said first plate with said second plate, the crown portion of said first plate being joined with but not engaging the shoulder portion of said second plate and the crown portion of said second plate being joined with but not engaging the shoulder portion of said first plate whereby a gap is defined between the confronting surfaces of said crown and shoulder portions, the assembled crown and shoulder portions of said first and second plates defining a rectangular opening for receiving and confining preselected ones of said conductors and phase leads;

said conductors and phase leads being arranged in an overlapping relationship within said opening and being engaged by said crown and shoulder portions, the width of said opening being arbitrarily less than the combined width of said overlapping conductors and phase leads so that a compressive load is directed upon said conductors and phase leads in a direction normal to the inner surface of said shoulder portions and parallel with the inner surface of said crown portions by said first and second plates as said shoulder and crown portions are drawn together by said plate connecting means.

2. The combination as defined in claim 1, said dynamoelectric machine including a stator member, a plurality of coils constituting a stator winding disposed upon said stator member, each of said coils comprising two conductors spaced apart on said stator member and having end portions disposed adjacent to each other for connection to a phase lead, said connector being joined in mechanical union with said coil end portions and said phase lead.

3. In a dynamoelectric machine having a magnetic core member and a winding disposed in slots upon said core member, said winding including a plurality of conductors arranged in spaced apart relation on said core member and having end portions disposed adjacent to each other for connection to a phase lead, the combination with said winding of an improved connector for providing mechanical and electrical connection between selected ones of said conductor end portions and one or more of said phase leads, said combination comprising:

a first L-shaped plate having a shoulder portion and a crown portion extending at a right angle from said shoulder portion;

a second L-shaped plate having a shoulder portion and a crown portion extending at a right angle from said shoulder portion;

means joining said first plate with said second plate, the crown portion of said first plate being joined with but not engaging the shoulder portion of said second plate and the crown portion of said second plate being joined with but not engaging the shoulder portion of said first plate whereby a gap is defined between the confronting surfaces of said crown and shoulder portions, the assembled crown and shoulder portions of said first and second plates defining a rectangular opening for receiving and confining preselected ones of said conductors and phase leads;

said conductors and phase leads being arranged in an overlapping relationship within said opening and being engaged by said crown and shoulder portions, the width of said opening being arbitrarily less than the combined width of said overlapping conductors and phase leads so that a compressive load is directed upon said conductors and phase leads in a direction normal to the inner surface of said shoulder portions and parallel with the inner surface of said crown portions by said first and second plates as said shoulder and crown portions are drawn together by said plate connecting means;

said shoulder portion of each plate having at least one slot extending therethrough and said crown portion of each plate having at least one opening, said plate connecting means including a plurality of screw bolts, at least one of said screw bolts connecting the crown portion of said first plate with the shoulder portion of said second plate, and at least one of said screw bolts connecting the crown portion of said second plate with the shoulder portion of said first plate, said screw bolts extending through said shoulder slots and being in engagement with said crown openings.

4. The combination as defined in claim 3 wherein two of said conductors are arranged in overlapping relationship with one of said phase leads disposed therebetween, said overlapping conductors and phase lead being confined by said shoulder and crown portions.

5. The combination as defined in claim 3 wherein said conductors and phase lead are soldered one to another and to said shoulder and crown portions of said connector.

6. The combination as defined in claim 3 wherein each of said conductors and phase leads comprises a group of stranded conductor portions, said stranded conductor portions of each group being arranged in a side-to-side stacked relationship with each other, said plate connecting means establishing a high pressure union between the plates of said connector and said strands which are immediately adjoined thereto and also between the stacks of strands and the individual strands of each stack.

7. The combination as defined in claim 3, said dynamoelectric machine including a stator member, a plurality of coils constituting a stator winding disposed upon said stator member, each of said coils comprising two conductors spaced apart on said stator member and having end portions disposed adjacent to each other for connection to a phase lead, said connector being joined in mechanical union with said coil end portions and said phase lead;

and,

a plurality of said connector assemblies being disposed adjacent to each other, said screw bolts extending from said shoulder portions to separate said connectors.