High-power generator copper bar wiring assembly

Abstract

This utility model relates to a copper busbar wiring assembly for a high-power generator. It is characterized by comprising a first mounting bracket, a vertically arranged neutral wire copper busbar, and three output vertical copper busbars arranged at equal intervals; a second mounting bracket parallel to one side of the first mounting bracket, with a neutral wire connecting copper busbar connected to the second mounting bracket, and the two ends of a middle connecting copper busbar connected to the neutral wire vertical copper busbar and the neutral wire connecting copper busbar; three winding connecting copper busbars fixedly connected to the three output vertical copper busbars; three measuring current transformers fixedly connected to a transformer mounting bracket above the first mounting bracket; and three differential current transformers fixedly mounted on the second mounting bracket, with the three neutral wire copper busbars passing through the three differential current transformers and connecting to the neutral wire connecting copper busbars. This utility model features a rationally designed installation structure, making the installation of the differential current transformers and measuring current transformers more stable and reliable, reducing safety hazards, and ensuring long-term stable operation of the generator.

Description

Technical Field

[0001] This utility model relates to a generator, and more particularly to a copper busbar wiring assembly for a high-power generator. Background Technology

[0002] In existing technologies, large generator wiring assemblies generally use vertical direct connection plates, as disclosed in the existing patent (patent number 200920285320.0). These vertical direct connection plates allow for wiring on both the left and right sides, making wiring convenient, safe, and reliable. With continuous technological advancements, higher requirements are being placed on generators. Generators need to be able to install measuring current transformers and differential current transformers to achieve accurate monitoring and rapid fault isolation, thereby ensuring the safety of the power system.

[0003] In existing technologies, differential current transformers and measuring current transformers cannot be directly installed on copper busbar wiring assemblies. These transformers can only be installed on the start and end leads of the generator stator windings. Large motor transformers are bulky, and when installed on the start and end leads of the motor windings, the resulting vibrations can damage the motor leads, posing a safety hazard. Some manufacturers have proposed lengthening the winding connecting copper busbars, suspending the transformers on them, and binding them together with cable ties. This provides good overall integrity but also presents several problems. The transformers will be in direct contact with the winding copper busbars. When the generator is under load, the winding copper busbars will heat up and come into direct contact with the transformer housing, potentially damaging the housing and posing a safety hazard. Other manufacturers have moved the transformers to the unit control cabinet, which increases the cabinet size and makes wiring layout difficult. Utility Model Content

[0004] In response to the aforementioned problems, the applicant has conducted research and improvements, providing a high-power generator copper busbar wiring assembly with a simple and compact structure. It integrates the differential current transformer and the measuring current transformer into a single wiring module, and the reasonable installation structure makes the installation of the differential current transformer and the measuring current transformer more stable and reliable. At the same time, the wiring is reliable and aesthetically pleasing, reducing safety hazards and ensuring the long-term stable operation of the high-power generator.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A high-power generator copper busbar wiring assembly includes a horizontally arranged first mounting bracket, a vertically arranged neutral wire copper busbar and three vertical output copper busbars arranged at equal intervals from one end of the first mounting bracket to the other end, and fixedly connected to the first mounting bracket by mounting blocks; a second mounting bracket is arranged parallel to one side of the first mounting bracket, the neutral wire connecting copper busbar is connected to the second mounting bracket by a wiring insulation seat and a mounting pad, the neutral wire connecting copper busbar is bent into an L-shape, one end of the middle connecting copper busbar is connected to the neutral wire vertical copper busbar, and the other end is connected to the bent end of the neutral wire connecting copper busbar; three winding connecting copper busbars are fixedly connected to the three output vertical copper busbars respectively, and cold-pressed terminals are fixedly provided at the outer ends of the three winding connecting copper busbars respectively;

[0007] The current transformer mounting bracket is positioned above the first mounting bracket. The current transformer mounting bracket has rectangular holes for one neutral vertical copper busbar and three output vertical copper busbars to pass through. The three output vertical copper busbars pass through three horizontally arranged measuring current transformers, and the three horizontally arranged measuring current transformers are fixedly connected to the current transformer mounting bracket.

[0008] Three differential current transformers are fixedly mounted on the second mounting bracket outside the neutral line connecting copper busbar. The three neutral line copper busbars pass through the three differential current transformers and are connected to the neutral line connecting copper busbar. Cold-pressed terminals are fixedly mounted on the outer ends of the three neutral line copper busbars.

[0009] Further:

[0010] The current transformer mounting bracket includes inverted U-shaped supports at both ends, with reinforcing plates welded to the inner side of the supports, and two parallel L-shaped fixing plates welded to the top surface of the supports.

[0011] A cable tray is welded to the side of one of the fixed plates.

[0012] The technical advantages of this utility model are as follows:

[0013] This utility model discloses a high-power generator copper busbar wiring assembly with a simple and compact structure. It integrates a differential current transformer and a measuring current transformer into a single wiring module. The reasonable installation structure makes the installation of the differential current transformer and the measuring current transformer more stable and reliable. At the same time, the wiring is reliable and aesthetically pleasing, reducing safety hazards and ensuring the long-term stable operation of the high-power generator. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention (hiding the measuring current transformer and transformer support).

[0016] Figure 3 This is a three-dimensional structural diagram of the current transformer support.

[0017] Figure 4 This is a schematic diagram of the installation structure of the copper busbar connecting the neutral wire to the second mounting bracket. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0019] like Figures 1-4 As shown, this utility model includes a horizontally arranged first mounting bracket 1, a vertically arranged neutral wire copper busbar 3 and three vertical output copper busbars 31 arranged at equal intervals from one end of the first mounting bracket 1 to the other end, and fixedly connected to the first mounting bracket 1 by mounting blocks 2. A second mounting bracket 14 is arranged parallel to one side of the first mounting bracket 1. A neutral wire connecting copper busbar 17 is connected to the second mounting bracket 14 through a wiring insulation seat 16 and a mounting pad 15. The neutral wire connecting copper busbar 17 is bent into an L-shape, with one end of the intermediate connecting copper busbar 13 connected to the neutral wire vertical copper busbar 3, and the other end connected to the bent end of the neutral wire connecting copper busbar 17. Three winding connecting copper busbars 4 are fixedly connected to the three vertical output copper busbars 31 respectively. Cold-pressed terminals 5 are fixedly provided on the outer ends of the three winding connecting copper busbars 31 respectively. The generator main output lead is connected to the winding connecting copper busbars 4 through the cold-pressed terminals 5. The current transformer mounting bracket 7 is positioned above the first mounting bracket 1. The mounting bracket 7 has rectangular holes 71 for one neutral vertical copper busbar 3 and three output vertical copper busbars 31 to pass through. The three output vertical copper busbars 31 pass through three horizontally positioned measuring current transformers 6, which are then fixedly connected to the mounting bracket 7. Three differential current transformers 19 are fixedly mounted on a second mounting bracket 14 outside the neutral connecting copper busbar 17. Three neutral copper busbars 18 pass through the three differential current transformers 19 and connect to the neutral connecting copper busbar 17. Cold-pressed terminals 5 are fixedly installed at the outer ends of the three neutral copper busbars 18, and the generator neutral output lead is connected to the neutral copper busbar 18 via the cold-pressed terminals 5. Both the three differential current transformers 19 and the three measuring current transformers 6 are current transformers with mounting holes for easy installation, and they are arranged in a straight line during installation.

[0020] In this embodiment, the current transformer mounting bracket 7 includes inverted U-shaped supports 8 at both ends. A reinforcing plate 9 is welded to the inner side of each support 8. Two parallel L-shaped fixing plates 10 are welded to the top surface of the supports 8. The supports 8 at both ends and the two fixing plates 10 form a rectangular hole 71. The two L-shaped fixing plates 10 are arranged opposite each other, allowing their folded edges to effectively restrict the position of the current transformer 6. Each fixing plate 10 has mounting bolt holes 11 for mounting the current transformer 6. A cable tray 12 is welded to the side of one fixing plate 10, and the cable tray 12 can be used for lead wire binding.

[0021] In practical use, this utility model is installed in the junction box of a high-power generator. By integrating the differential current transformer and the measuring current transformer into a single wiring module and placing it in the generator's junction box, the installation structure is rationally designed, making the installation of the differential current transformer and the measuring current transformer more stable and reliable. Simultaneously, the wiring is reliable and aesthetically pleasing, reducing safety hazards and ensuring the long-term stable operation of the high-power generator.

Claims

1. A high-power generator copper busbar wiring assembly, characterized in that: The system includes a horizontally positioned first mounting bracket, a vertically positioned neutral wire copper busbar, and three vertical output copper busbars arranged sequentially at equal intervals from one end of the first mounting bracket to the other, and each fixedly connected to the first mounting bracket via mounting blocks; a second mounting bracket is positioned parallel to one side of the first mounting bracket, and a neutral wire connecting copper busbar is connected to the second mounting bracket via a wiring insulation seat and mounting pad. The neutral wire connecting copper busbar is bent into an L-shape, with one end of the middle connecting copper busbar connected to the neutral wire vertical copper busbar and the other end connected to the bent end of the neutral wire connecting copper busbar; three winding connecting copper busbars are fixedly connected to the three output vertical copper busbars respectively, and cold-pressed terminals are fixedly provided at the outer ends of the three winding connecting copper busbars respectively. The current transformer mounting bracket is positioned above the first mounting bracket. The current transformer mounting bracket has rectangular holes for one neutral vertical copper busbar and three output vertical copper busbars to pass through. The three output vertical copper busbars pass through three horizontally arranged measuring current transformers, and the three horizontally arranged measuring current transformers are fixedly connected to the current transformer mounting bracket. Three differential current transformers are fixedly mounted on the second mounting bracket outside the neutral line connecting copper busbar. The three neutral line copper busbars pass through the three differential current transformers and are connected to the neutral line connecting copper busbar. Cold-pressed terminals are fixedly mounted on the outer ends of the three neutral line copper busbars.

2. The high-power generator copper busbar wiring assembly according to claim 1, characterized in that: The current transformer mounting bracket includes inverted U-shaped supports at both ends, with reinforcing plates welded to the inner side of the supports, and two parallel L-shaped fixing plates welded to the top surface of the supports.

3. The high-power generator copper busbar wiring assembly according to claim 2, characterized in that: A cable tray is welded to the side of one of the fixed plates.

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