Three power automatic transfer switch

Abstract

The three power automatic transfer switch comprises a transfer driving mechanism of the three power automatic transfer switch, a three power automatic transfer switch contact assembly, a three power automatic transfer controller and a state indicating assembly; the three power automatic transfer switch contact assembly comprises two movable contacts for each pole in an insertion type structure, and a load static contact is connected with a first power static contact, a second power static contact and a third power static contact through the movable contacts. Six holes of an upper cover are matched with indicating labels of a manual operation assembly to indicate positions of the movable contacts and the first power static contact, the second power static contact and the third power static contact, and when I appears in I, II and III positions on the label, the switch is closed, and when I appears in O, O and O positions on the label, the switch is opened. The three power automatic transfer controller realizes continuous power supply of three powers through the transfer driving mechanism of the three power automatic transfer switch.

Description

Technical Field

[0001] The subject matter disclosed in this invention relates to devices belonging to electrical systems, and more specifically to three-power transfer switching devices. Background Technology

[0002] Automatic transfer switches for multiple power sources need to selectively connect the load to the first, second, or third power source based on the power quality status of the first, second, and third power sources. In automatic mode, when the first power source fails, the automatic transfer switch can automatically switch from the first power source to the second or third power source, ensuring the continuity and reliability of the power supply. In case of line maintenance or failure of multiple power sources, there should also be a position where the first, second, and third power sources are simultaneously disconnected, i.e., a fully open position.

[0003] Existing transmission devices have complex structures and many parts, resulting in an overall non-compact structure for the power transfer switch. In addition, their stability is poor and they are not suitable for mechanisms that require multiple power transfers. Summary of the Invention

[0004] This invention provides an example of a three-power automatic transfer switch that solves the above-mentioned problems.

[0005] The present invention is achieved through the following technical solution: a three-power transfer switch conversion drive mechanism, a three-power transfer switch contact assembly, a three-power automatic transfer controller, and a status indicator assembly constitute a three-power automatic transfer switch.

[0006] The three-power transfer switch contact assembly includes two moving contacts per pole with an insert structure, a load stationary contact connected to a first power stationary contact, a second power stationary contact, and a third power stationary contact respectively through the moving contacts, and also includes a moving contact housing, a rotating shaft, a base, and a cover.

[0007] The rotating shaft is used for torque transmission between the contact assemblies of each pole three-power transfer switch.

[0008] The switching drive mechanism of the three power transfer switch includes an electromagnetic drive assembly, a manual operation assembly, an energy storage limit assembly, a left mechanism housing, a right mechanism housing, a mechanism base, and a switching drive shaft.

[0009] The top of the conversion drive shaft has a concave cross groove, and the rotating shaft in the three power conversion switch contact assembly has a raised cross step. The cross step is inserted into the cross groove to achieve synchronous rotation and torque transmission.

[0010] The switching drive mechanism of the three power transfer switch includes a manual operation component, as well as an operating gear and a driven gear. The operating gear has an indicator plate on its upper end, with "I" as the identifier. The square hole in the middle of the operating gear is used to insert an external handle for operation.

[0011] The changeover switch status indicator assembly includes a top cover, a top cover slider, and six holes on the top cover for mechanical indication and light holes for power status indicator lights; the top cover slider is used for manual / automatic operation switching of the three-power automatic changeover controller.

[0012] The six holes on the top cover, together with the indicator labels of the manual operation components, indicate the positions of the moving contact and the first, second, and third power stationary contacts. When the "I" on the label appears in positions I, II, or III, the circuit is closed; when the "I" on the label appears in positions O, O, or O, the circuit is open.

[0013] The base and cover recesses and mounting parts in the dual power transfer switch contact assembly are for DIN rail mounting or fixation to a mounting plate; The base recess and mounting parts of the three-power transfer switch's switching drive mechanism are for DIN rail mounting or fixation to a mounting plate. The two parts mentioned above, used for DIN rail mounting or fixing, are on the same line.

[0014] The three-power automatic transfer switch controller is installed inside the transfer drive mechanism of the three-power transfer switch.

[0015] This invention discloses a three-power automatic transfer switch, which is small in size, widely applicable, simple and convenient to operate, and safe and reliable in performance. Attached Figure Description

[0016] Figure 1 Schematic diagram of the overall three-power automatic transfer switch;

[0017] Figure 2 Schematic diagram of the contact assembly of the three power transfer switch;

[0018] Figure 3 : Exploded view of the area between the rotating shaft and the conversion drive shaft;

[0019] Figure 4 Schematic diagram of the three-power transfer switch drive mechanism;

[0020] Figure 5 Schematic diagram of the first power supply (I) closing;

[0021] Figure 6 Intended to close the second power supply (II);

[0022] Figure 7 Schematic diagram of closing the third power supply (III);

[0023] Figure 8 : Schematic diagram of power supply tripping.

[0024] Figure 9 DIN mounting rail diagram.

[0025] Figure 10 : Schematic diagram of a three-power conversion controller.

[0026] List of Identifiers: 1. Three-power transfer switch contact assembly; 2. Three-power transfer switch drive mechanism; 3. Three-power automatic transfer controller; 4. Transfer switch status indicator assembly; 5. Moving contact; 6. Load stationary contact; 7. First power stationary contact; 8. Second power stationary contact; 9. Third power stationary contact; 10. Moving contact housing; 11. Rotating shaft; 12. Base; 13. Cover; 15. Transfer drive shaft; 16. Cross groove; 17. Cross step; 18. Electromagnetic drive assembly; 19. Manual operation assembly; 20. Energy storage limit assembly; 21. Left mechanism housing; 22. Right mechanism housing; 23. Mechanism base; 24. Indicator sign; 25. Operating gear; 26. Driven gear; 27. Top cover; 28. Six-hole shaft; 29. ​​Rail; 31. Square hole; 30. Top cover slider. Detailed Implementation

[0027] like Figure 1 The three-power transfer switch shown consists of a transfer drive mechanism 2, a three-power transfer switch contact assembly 1, a three-power automatic transfer controller 3, and a status indicator assembly 4.

[0028] like Figure 2 As shown: The three-power transfer switch contact assembly 1 includes two moving contacts 5 per pole with an insert structure, a load stationary contact 6 connected to the first power stationary contact 7, the second power stationary contact 8, and the third power stationary contact 9 respectively through the moving contacts, and also includes a moving contact housing 10, a rotating shaft 11, a base 12, and a cover 13.

[0029] like Figure 3 As shown: The rotating shaft 11 is used for torque transmission between the contact assemblies 1 of the three-pole power transfer switches.

[0030] like Figure 4 As shown: The switching drive mechanism 2 of the three power supply changeover switch includes an electromagnetic drive component 8, a manual operation component 19, an energy storage limit component 20, a left mechanism housing 21, a right mechanism housing 22, a mechanism base 23, and a switching drive shaft 15.

[0031] like Figure 3 As shown: the top of the conversion drive shaft 15 has a concave cross groove 16, and the rotating shaft in the three power conversion switch contact assembly has a raised cross step 17. The cross step 17 is inserted into the cross groove 16 to achieve synchronous rotation and torque transmission.

[0032] like Figure 4As shown in Figure 5: The three-power transfer switch includes a manual operation component 19, which also includes an operation gear 25 and a driven gear 26. The operation gear 25 has an indicator plate 24 on its upper end, where I is the identifier. The square hole 31 in the middle of the operation gear 25 is used to insert an external handle for operation.

[0033] like Figure 5 As shown, the changeover switch status indicator assembly 4 includes an upper cover 27, an upper cover slider 30, and six holes 28 for mechanical indication and light holes for power status indicator lights on the upper cover. The upper cover slider 30 is used for manual / automatic operation switching of the three-power automatic changeover controller 3.

[0034] like Figure 5 As shown in 6, 7, and 8, the six holes 28 of the upper cover 27 cooperate with the indicator plate 24 of the manual operation component to indicate the position of the moving contact 5 and the first power stationary contact 7, the second power stationary contact 8, and the third power stationary contact 9. When the I on the indicator plate 24 appears in the I, II, or III positions, it indicates that the circuit is closed; when the I on the indicator plate appears in the O, O, or O positions, it indicates that the circuit is open.

[0035] like Figure 9 As shown: the recesses and mounting parts of the base 12 and cover 13 in the dual power transfer switch contact assembly 1 are used for DIN rail mounting or fixing to the mounting plate; the recesses and mounting parts of the mechanism base 23 of the three power transfer switch conversion drive mechanism 2 are used for DIN rail mounting or fixing to the mounting plate; the above two parts for DIN rail mounting or fixing are on the same line, i.e., rail 29.

[0036] like Figure 10 As shown: The three-power automatic transfer controller 3 is installed inside the transfer drive mechanism 2 on one side of the three-power transfer switch.

Claims

1. A three-power automatic transfer switch, characterized in that, It includes a three-power transfer switch contact assembly, a three-power transfer switch switching drive mechanism, a three-power automatic transfer switch controller, and a transfer switch status indicator assembly.

2. The three-power automatic transfer switch according to claim 1, characterized in that, The aforementioned three-power transfer switch contact assembly, The device includes two moving contacts per pole with an insert structure, and a load stationary contact connected to a first power stationary contact, a second power stationary contact, and a third power stationary contact via the moving contacts. It also includes a moving contact housing, a rotating shaft, a base, and a cover.

3. The three-power automatic transfer switch according to claim 2, characterized in that, The aforementioned shaft is used for torque transmission between the contact assemblies of the three-pole power transfer switches.

4. The three-power automatic transfer switch according to claim 1, characterized in that, The switching drive mechanism of the three-power transfer switch includes an electromagnetic drive assembly, a manual operation assembly, an energy storage limit assembly, a left mechanism housing, a right mechanism housing, a mechanism base, and a switching drive shaft.

5. The three-power automatic transfer switch according to claims 3 and 4, characterized in that, The top of the conversion drive shaft has a concave cross groove, and the rotating shaft in the three power conversion switch contact assembly has a raised cross step, which is inserted into the cross groove to achieve synchronous rotation and torque transmission.

6. The three-power automatic transfer switch according to claim 4, characterized in that, The switching drive mechanism of the three power supply changeover switch includes a manual operation component, which also includes an operating gear and a driven gear. The operating gear has an indicator plate on its upper end, with "I" as the identifier. The square hole in the middle of the operating gear is used to insert an external handle for operation.

7. The three-power automatic transfer switch according to claim 1, characterized in that, The changeover switch status indicator assembly includes a top cover, a top cover slider, and six holes on the top cover for mechanical indication and light holes for power status indicator lights; the top cover slider is used for manual / automatic operation switching of the three-power automatic changeover controller.

8. The three-power automatic transfer switch according to claims 6 and 7, characterized in that, The six holes on the top cover, in conjunction with the indicator plates of the manual operation component, indicate the positions of the moving contact and the first, second, and third power stationary contacts. When the "I" on the indicator plate appears in positions I, II, or III, the circuit is closed; when the "I" on the indicator plate appears in positions O, O, or O, the circuit is open.

9. The three-power automatic transfer switch according to claims 2 and 5, characterized in that, The base and cover recesses and mounting parts in the dual power transfer switch contact assembly are for DIN rail mounting or fixing to a mounting plate. The recess and mounting parts of the base of the switching drive mechanism of the three power transfer switch are used for DIN rail mounting or fixing to the mounting plate. The two parts mentioned above, used for DIN rail mounting or fixing, are on the same line.

10. The three-power automatic transfer switch according to claim 1, characterized in that, The aforementioned three-power automatic transfer switch controller is installed inside the transfer drive mechanism of the three-power transfer switch.

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