Method of selectively connecting a set of winding means for a dynamoelectric machine into at least two different electrical configurations

• US 5,007,156 A
• Filed: 07/19/1989
• Issued: 04/16/1991
• Est. Priority Date: 06/30/1988
• Status: Expired due to Fees

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Hurtgen, Jerome P.
• Primary Examiner(s): Abrams, Neil
• Application Number:
  US07/381,854
• Time in Patent Office: 636 Days
• Field of Search: 439/166-175, 439/217-244, 439/814, 439/527, 439/535, 439/572, 439/574, 439/575, 310/71, 310/89, 310/181, 310/184, 318/770, 318/771, 318/441, 318/442, 29/596, 29/597, 29/861
• US Class Current: 29/596
• CPC Class Codes: H01R 29/00 Coupling parts for selective co-operation with a counterpart in different ways to establish different circuits, e.g. for voltage selection, for series-parallel selection, programmable connectors
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine

Abstract

A method of selectively connecting a set of winding means for a dynamoelectric machine into at least two different electrical configurations. In this method, the leads of the winding means collected in a conduit box of the dynamoelectric machine are each connected with a lead termination. A terminal block is disposed in a preselected orientation adjacent a mounting table in the conduit box, and each lead termination is inserted into a predetermined one of a plurality of connection apertures in the terminal block. The terminal block is moved from its preselected orientation into another orientation in overlaying engagement with an abutment surface on the mounting table, and the terminal block is releasably engaged in its another preselected orientation to the mounting table. A lead termination device and a method of fabricating such are also disclosed.

Claims

1. A method of selectively connecting a set of winding means for a dynamoelectric machine into at least two different electrical configurations with the winding means being adapted for excitation upon the energization of the dynamoelectric machine from a power source, the dynamoelectric machine having a means for housing at least the winding means, the housing means including at least one opening therein, a conduit box mounted to the housing means and including a base wall integral with a plurality of sidewalls, an end edge on the sidewalls, at least one aperture in the base wall communicating with the at least one opening in the housing means, a mounting table integral with the base wall within the conduit box, at least a pair of generally opposite edges on the mounting table and defining in part an abutment surface on the mounting table spaced from the base wall and the sidewalls, and cover means for the conduit box, each winding having a plurality of leads adapted to be connected to each other and to the power source in the at least two different electrical configurations and with the leads passing through the at least one opening and the at least one aperture in part into the conduit box, a terminal block including a plurality of connection apertures therein, a lip adjacent an edge portion of the terminal block, a latch adjacent another edge portion of the terminal block generally opposite the first named edge portion thereof, and a separable base, plug means for connection with the power source including a plurality of predeterminately interconnected terminals, and a plurality of lead terminations including a plurality of releasable connectors, respectively, the method comprising the steps of:

connecting the lead terminations to the leads of the winding means passed into the conduit box, respectively;

disposing the terminal block in at least a generally vertical orientation generally above the at least one aperture in the conduit box so as to be arranged at least generally perpendicular with respect to the abutment surface of the mounting table;

placing the lip on the terminal block at least adjacent one of the opposite edges of the mounting table during the disposing step;

inserting the releasable connector of each lead termination into a predetermined one of the connection apertures in the terminal block;

securing the separable base to the terminal block thereby to retain the lead terminations against displacement from the terminal block;

maintaining the terminal block in its at least generally vertical orientation at least during the inserting and securing steps;

rotating the terminal block from the at least generally vertical orientation into another orientation seating the separable base of the terminal block against the abutment surface on the mounting table;

gripping the lip of the terminal block in engagement with the one opposite edge at least generally when the terminal block is rotated into the another orientation thereof;

urging the catch on the terminal block into releasable latching engagement with the other of the opposite edges of the mounting table at least generally when the terminal block is rotated into the another orientation thereof;

inserting the terminals of the plug means into electrical contacting engagement with preselected ones of some of the releasable connectors in the terminal block;

selectively establishing one of the at least two different electrical configurations of the winding means in response to the inserting step;

releasably securing the cover means on the end edge of the sidewalls of the conduit box in enclosing relation therewith; and

biasing a part on the cover means into engagement with the plug means to retain the terminals against displacement from their respective electrical contacting engagement with the preselected ones of the some releasable connectors during the releasably securing step.

2. A method of selectively connecting a set of winding means for a dynamoelectric machine into at least two different electrical configurations with the winding means being adapted for excitation upon the energization of the dynamoelectric machine, the dynamoelectric machine including a housing having at least one opening therein, a conduit box associated with the housing and having at least one aperture communicating with the at least one opening, each winding means having a plurality of leads adapted to be connected to each other in the at least two different electrical configurations and with the leads passing through the at least one opening and the at least one aperture in part into the conduit box, a mounting table disposed within the conduit box and having an abutment surface thereon, a terminal block having a plurality of connection apertures therein, and a plurality of lead terminations each having a releasable connector, the method comprising the steps of:

connecting the lead terminations to the leads of the winding means passed into the conduit box, respectively;

placing the terminal block at least in part over the at least one aperture in a generally vertical orientation with respect to the abutment surface on the mounting table;

locating a part of the terminal block at least adjacent a part of the mounting table during the placing step;

releasably inserting each of the releasable connectors of the lead terminations into a predetermined one of the connection apertures in the terminal block while maintaining the terminal block at least generally in the generally vertical orientation thereof;

rotating the terminal block from its generally vertical orientation into another orientation seated against the abutment surface;

engaging the terminal block part with the mounting table part at least upon the occurrence of the rotating step; and

releasably engaging at least another part of the terminal block with at least another part of the mounting table thereby to releasably retain the terminal block against displacement from its another orientation.

3. The method as set forth in claim 2 wherein the first named part of the terminal block comprises a lip thereon and the first named part of the mounting table comprises an edge thereof, and wherein the engaging step includes gripping the lip about at least a part of the edge at least when the terminal block is in its another orientation.

4. The method as set forth in claim 2 wherein the at least another part of the terminal block comprises a catch thereon and the at least another part of the mounting table comprises an edge thereof, and wherein the releasably engaging step includes pressing the catch into releasably gripping engagement with at least a part of the edge.

5. The method as set forth in claim 2 wherein the dynamoelectric machine further includes a plug means for connection with a power source and having a plurality of predeterminately interconnected terminals, and wherein the method further comprises the additional step of inserting the terminals into electrical connecting engagement with preselected ones of some of the releasable connectors to establish one of the at least two different electrical configurations of the winding means.

6. The method as set forth in claim 5 wherein the dynamoelectric machine further includes cover means for association with conduit box, and wherein the method further comprises the further additional step of securing the cover means in enclosing relation with the conduit box and urging a part on the cover means into engagement with the plug means to retain the terminals against displacement from their respective electrical contacting engagement with the preselected ones of the some releasable connectors.

7. The method as set forth in claim 2 wherein the terminal block also has a separable base, and wherein the method further comprises the intermediate step of releasably securing the separable base to the terminal block thereby to retain the lead terminations against displacement from the terminal block, the separable base being seated against the abutment surface during the rotating step.

8. The method as set forth in claim 2 wherein the lead terminations include a set of power terminals, and wherein the connecting step includes interconnecting the power terminals with one of the releasable connectors and one of the leads of a preselected one of the windings, respectively.

9. The method as set forth in claim 8 wherein the terminal block also has a set of slots therein, and wherein the releasably inserting step includes placing the power terminals in the slots.

10. The method as set forth in claim 2 wherein the dynamoelectric machine further includes a set of power terminals, the terminal block also having a set of slots therein, and wherein the connecting step includes interconnecting preselected ones of the releasable connectors with the power terminals, the power terminals being disposed in the slots during the releasably inserting step.

11. A method of selectively connecting a set of winding means for a dynamoelectric machine into at least two different electrical configurations with the winding means being adapted for excitation upon the energization of the dynamoelectric machine, the dynamoelectric machine including means for housing at least the winding means and having at least one opening therein, a conduit box associated with the housing means and having at least one aperture disposed so as to communicate with the at least one opening, each winding means having a plurality of leads adpated to be connected to each other and to a power source in the at least two different electrical configurations and with the leads passing through the at least one opening and the at least one aperture in part into the conduit box, a mounting table in the conduit box and having an abutment surface thereon, a terminal block having a plurality of connection apertures therein, and a plurality of lead terminations, the method comprising the steps of:

connecting the lead terminations to the leads of the winding means passed into the conduit box, repsectively;

disposing the terminal block in a preselected orientation at least adjacent the mounting table in the conduit box;

releasably inserting each lead termination into a predetermined one of the connection apertures in the terminal block while maintaing the terminal block at least generally in the preselected orientation thereof;

moving the terminal block from the preselected orientation thereof into another preselected orientation in overlaying engagement with the abutment surface of the mounting table; and

releasably engaging the terminal block in its another preselected orientation to the mounting table at least upon the occurrence of the moving step.

12. The method as set forth in claim 11 wherein the dynamoelectric machine further includes a plug means for connection with a power source and having a plurality of predeterminately interconnected terminals, and wherein the method further comprises the additional step of inserting the terminals of the plug means into electrical connecting engagement with preselected ones of some of the releasable connectors to establish one of the at least two different electrical configurations of the winding means.

13. The method as set forth in claim 11 wherein the releasably engaging step includes, latching the terminal block to the mounting table.

14. The method as set forth in claim 11 wherein the terminal block further has a lip extending along an edge portion on the terminal block, and wherein the moving step includes rotating the terminal block from the first named preselected orientation toward the another preselected orientation thereof and gripping the lip in engagement with an edge on the mounting table at least upon the occurrence of the rotating step.

15. The method as set forth in claim 14 wherein the terminal block also has a catch adjacent another edge portion of the terminal block generally opposite the first named edge portion thereof, and wherein the releasably engaging step includes pressing the catch into engagement with another edge of the table generally opposite the first named edge thereof.

16. The method as set forth in claim 12 wherein the dynamoelectric machine further includes a cover for the conduit box, and wherein the method further comprises the further additional step of releasably securing the cover in enclosing relation to the conduit box and engaging a part on the cover with the plug means to retain the terminals against displacement from their respective electrical contacting engagement with the preselected ones of the some releasable connectors.

17. The method as set forth in claim 11 wherein the disposing step includes placing the terminal block generally in a vertical orientation extending generally perpendicular to the abutment surface of the mounting table with the vertical orientation comprising the first named preselected orientation.

18. The method as set forth in claim 11 wherein the moving step includes placing the terminal block in a generally parallel orientation overlaying the abutment surface of the mounting table with the parallel orientation comprising the another preselected orientation.

19. The method as set forth in cliam 11 wherein the terminal block also has a separable base, and wherein the method further comprises the intermediate step of releasably securing the separable base to the terminal block thereby to retain the lead terminations against displacement from the terminal block, the separable base being disposed in seating engagement against the abutment surface of the mounting table when the terminal blocks is in its another preselected orientation.