CN202534475U

CN202534475U - Low voltage Y-shaped connecting wire of triangular transformer

Info

Publication number: CN202534475U
Application number: CN2012201653726U
Authority: CN
Inventors: 于国先; 孙文鹏; 董艳; 丁凯
Original assignee: Dongfang Electronics Co Ltd
Current assignee: STATE GRID JIBEI ENERGY-SAVING SERVICES Co Ltd
Priority date: 2012-04-18
Filing date: 2012-04-18
Publication date: 2012-11-14
Anticipated expiration: 2022-04-18

Abstract

The utility model discloses a low voltage Y-shaped connecting wire of a triangular transformer. A connecting busbar of the A-phase tail end x, a connecting busbar of the B-phase tail end y and a connecting busbar of the C-phase tail end z of the triangular transformer are connected in Y-shaped mode, and the connecting point is a leading-out point of a connecting busbar of a zero wire o. The connecting busbar of the A-phase tail end x has the same wire outgoing position with a wire outgoing busbar of the A-phase head end a, the connecting busbar of the B-phase tail end y has the same wire outgoing position with a wire outgoing busbar of the B-phase head end b, and the connecting busbar of the C-phase tail end z has the same wire outgoing position with a wire outgoing busbar of the C-phase head end c. The wire outgoing positions are all placed on the central lines of short edges of a clamping piece and constitute vertexes of an equilateral triangle. The sectional area of the leading-wire wire outgoing busbar of the B-phase head end is larger than those of the leading-wire wire outgoing busbar of the A-phase head end and the leading-wire wire outgoing busbar of the C-phase head end, and the three phase wire outgoing busbars are guaranteed to have the same resistance. The connecting busbar of the A-phase tail end x, the connecting busbar of the B-phase tail end y and the connecting busbar of the C-phase tail end z are the same with each other and are all in a straight-plate shape. The low voltage Y-shaped connecting wire of the triangular transformer solves the problem that three phase leading wires have unbalanced resistance due to the fact that the leading wire of the B-phase head end of the triangular transformer is longer than the leading wires of the A-phase head end and the C-phase head end of the triangular transformer.

Description

A kind of triangle transformer low voltage Y wiring

Technical field

The utility model belongs to power equipment transformer technology field, especially relates to a kind of triangle transformer low voltage Y wiring.

Background technology

The three-phase coil of triangularity depressor is triangularly arranged; Its B phase low-voltage lead intractable; Therefore relevant producer has proposed many connection types, and the mode of connection of present triangle transformer adopting is following: draw after 1, forming a semi-surrounding to B phase low-voltage lead along the transformer side; 2, cross B phase low-voltage lead from the top of transformer and draw; 3, cross B phase low-voltage lead from the top of transformer and draw, go out the line position change, the relative bending of busbar is less; More than the drawback of three kinds of schemes be: its B phase terminal is longer relatively, for reducing its lead resistance, through increasing the lead-in wire sectional area, guarantee that low pressure goes out the balance of line resistance, and the busbar bending is many, complex process.

Summary of the invention

The purpose of the utility model be to improve the deficiency of prior art and provide a kind of B phase head end lead-in wire that solves the triangularity depressor be longer than A mutually with the C head end unbalanced triangle transformer low voltage of the three-phase lead resistance Y wiring that goes between and cause mutually.

The purpose of the utility model is to realize like this; A kind of triangle transformer low voltage Y wiring; Be that the connection busbar of the mutually terminal x of A of triangularity depressor, the connection busbar of the mutually terminal y of B and the busbar that is connected of the mutually terminal z of C adopt Y shape to connect; Tie point connects the leading point of busbar for zero line o; Be characterized in the connection busbar of the mutually terminal x of A and head end a outlet busbar, the mutually terminal y of B connection busbar and head end b outlet busbar, the mutually terminal z of C the outlet busbar that is connected busbar and head end c to go out line position identical; All on folder minor face center line and the summit of the equilateral triangle that constitutes; The sectional area ratio A phase head end lead-in wire outlet busbar of B phase head end lead-in wire outlet busbar, C phase head end lead-in wire outlet busbar big and guarantee that three-phase outlet busbar resistance equates, the connection busbar of the mutually terminal x of A, the connection busbar of the mutually terminal y of B and the mutually terminal z of C to be connected busbar identical, be directly tabular.

In order further to realize the purpose of the utility model, can be that the connection busbar of the mutually terminal x of A of triangularity depressor is that level shelve or vertical shelve with the outlet busbar of head end b, the busbar that is connected of the mutually terminal z of C with the outlet busbar of head end c with the outlet busbar of head end a, the connection busbar of the mutually terminal y of B.

Compared with present technology the utility model has following distinguishing feature and good effect: the busbar that is connected of the connection busbar that is connected busbar, the mutually terminal y of B of the mutually terminal x of A of the utility model triangularity depressor and the mutually terminal z of C adopts Y shape to connect; Tie point connects the leading point of busbar for zero line o; B phase head end lead-in wire outlet busbar is that benchmark is drawn with the vertical center line of A, C phase; The connection busbar of the mutually terminal x of A, the connection busbar of the mutually terminal y of B and the mutually terminal z of C to be connected busbar identical, be directly tabular, three-phase bus bar does not have bending; Processing technology is simple, and is easy to operate; B phase head end lead-in wire outlet busbar is that benchmark is drawn with the vertical center line of A, C phase; The length of B phase head end lead-in wire outlet busbar is longer than the length of A, C two phase head ends lead-in wire outlet busbar; Through strengthening B phase head end lead-in wire outlet busbar sectional area, keep the three-phase resistance balance; The outlet busbar that is connected busbar and head end c of the connection busbar of the connection busbar of the mutually terminal x of A of triangularity depressor and the outlet busbar of head end a, the mutually terminal y of B and the outlet busbar of head end b, the mutually terminal z of C is respectively from the same position outlet of each phase; All on folder minor face center line and the summit of the equilateral triangle that constitutes; Therefore the busbar of three-phase end is identical; Need not bending, processing technology is simple, and the terminal resistance balance of three-phase; Terminal busbar level is shelved, though this mode is dispelled the heat and more vertically shelved poorly, saves the space; Terminal busbar is vertically shelved, this mode good heat dissipation, but it is bigger to take up space.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is the another kind of structural representation of the utility model.

Embodiment

Embodiment 1; A kind of triangle transformer low voltage Y wiring; With reference to Fig. 1; Be on the basis of conventional triangle transformer device structure; The busbar 9 that is connected of the connection busbar 3 of the mutually terminal x of A of triangularity depressor, the connection busbar 1 of the mutually terminal y of B and the mutually terminal z of C adopts Y shape to connect; Tie point connects the leading point of busbar 6 for zero line o; The outlet busbar 8 that is connected busbar 9 and head end c of the connection busbar 1 of the connection busbar 3 of the mutually terminal x of A and the outlet busbar 5 of head end a, the mutually terminal y of B and the outlet busbar 7 of head end b, the mutually terminal z of C to go out line position identical, all on folder 2 minor face center lines and the summit of the equilateral triangle that constitutes, the sectional area ratio A phase head end lead-in wire outlet busbar 5 of B phase head end lead-in wire outlet busbar 7, C phase head end lead-in wire outlet busbar 8 big and guarantee that three-phase outlet busbar resistance is equal; The connection busbar 3 of the mutually terminal x of A, the connection busbar 1 of the mutually terminal y of B and the mutually terminal z of C to be connected busbar 9 identical; Be directly tabular, the outlet busbar 8 that is connected busbar 9 and head end c of the connection busbar 1 of the connection busbar 3 of the mutually terminal x of A of triangularity depressor and the outlet busbar 5 of head end a, the mutually terminal y of B and the outlet busbar 7 of head end b, the mutually terminal z of C is that level is shelved, and this constitutes a kind of structure of the utility model.

Embodiment 2; A kind of triangle transformer low voltage Y wiring; With reference to Fig. 2; Be on the basis of embodiment 1, the connection busbar 3 of the mutually terminal x of A of triangularity depressor is vertical shelve with the outlet busbar 7 of head end b, the busbar 9 that is connected of the mutually terminal z of C with the outlet busbar 8 of head end c with the connection busbar 1 of the outlet busbar 5 of head end a, the mutually terminal y of B, and other and embodiment 1 are identical.

Claims

1. triangle transformer low voltage Y wiring; Be that the connection busbar (3) of the mutually terminal x of A of triangularity depressor, the connection busbar (1) of the mutually terminal y of B and the busbar (9) that is connected of the mutually terminal z of C adopt Y shape to connect; Tie point connects the leading point of busbar (6) for zero line o; It is characterized in that the connection busbar (3) of the mutually terminal x of A and head end a outlet busbar (5), the mutually terminal y of B connection busbar (1) and head end b outlet busbar (7), the mutually terminal z of C the outlet busbar (8) that is connected busbar (9) and head end c to go out line position identical; All on folder (2) minor face center line and the summit of the equilateral triangle that constitutes; Big and the assurance three-phase outlet busbar resistance of the sectional area ratio A phase head end lead-in wire outlet busbar (5) of B phase head end lead-in wire outlet busbar (7), C phase head end lead-in wire outlet busbar (8) equates; The connection busbar (3) of the mutually terminal x of A, the connection busbar (1) of the mutually terminal y of B and the mutually terminal z of C to be connected busbar (9) identical, be directly tabular.

2. a kind of triangle transformer low voltage Y according to claim 1 wiring is characterized in that the connection busbar (3) of the mutually terminal x of A of triangularity depressor is that level shelve or vertical shelve with the outlet busbar (7) of head end b, the busbar (9) that is connected of the mutually terminal z of C with the outlet busbar (8) of head end c with the outlet busbar (5) of head end a, the connection busbar (1) of the mutually terminal y of B.