CN215871102U - Connector device for quickly switching star and triangle connection method of three-phase motor - Google Patents
Connector device for quickly switching star and triangle connection method of three-phase motor Download PDFInfo
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- CN215871102U CN215871102U CN202121383565.4U CN202121383565U CN215871102U CN 215871102 U CN215871102 U CN 215871102U CN 202121383565 U CN202121383565 U CN 202121383565U CN 215871102 U CN215871102 U CN 215871102U
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- connector device
- cover plate
- phase motor
- star
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Abstract
The application discloses a connector device for quickly switching a star-delta connection method of a three-phase motor, which consists of an upper cover plate, a lower cover plate, a copper sleeve, a spring and a lead-out wire; the copper bush is embedded between the upper cover plate and the lower cover plate, a spring is additionally arranged above each copper bush, holes are formed in each copper bush, and a lead-out wire is welded on each hole. The connector device can help testers to switch the connection mode between star and triangle very quickly during testing, and can ensure the correctness of the tested three-phase motor on connection.
Description
Technical Field
The utility model relates to the field of motor detection, in particular to a connector device for quickly switching a star-delta connection method of a three-phase motor.
Background
In factory inspection of the three-phase asynchronous motor after assembly, a no-load inspection test is generally carried out, so that no-load current and no-load power of the three-phase motor can be rapidly obtained, and whether the three-phase motor can be qualified to leave a factory or not is judged.
However, in the conventional test method, the test is generally performed under 380V (star connection) as a power supply condition, which results in a test blind spot: the star point of the star connection method is generally realized by merging U2, V2 and W2, if any 2 outgoing lines in the three outgoing lines are interchanged, the whole test process and the result are not changed, but the interchange can cause wiring errors of the three-phase motor when the wiring is used by a terminal customer on site.
The error is that in the delta connection method, because any 2 leading wires of U2, V2 and W2 are exchanged, the direction of the phase current of one phase is reversed, and the three-phase motor cannot normally operate in the delta connection method.
Disclosure of Invention
In order to avoid the defects of the prior art, the utility model can very quickly switch the switching of the star and the triangle of the wiring mode through the connector device and can ensure the wiring correctness of the tested three-phase motor.
The utility model relates to a conversion connector device for rapidly switching a star-delta connection method of a three-phase motor, which consists of an upper cover plate 1, a lower cover plate 2, a copper sleeve 3, a spring 4 and a lead-out wire 5; the copper bush 3 is embedded between the upper cover plate 1 and the lower cover plate 2, the spring 4 is additionally arranged above each copper bush 3, holes are formed in each copper bush 3, and the outgoing line 5 is welded on each hole.
The connector device of the utility model is characterized in that the upper cover plate 1 and the lower cover plate 2 are both made of non-conductive materials, and the copper sleeve 3 is used for conducting connection with a motor wiring board. In order to ensure that each copper bush 3 reliably contacts the nut plane on the lower motor wiring board at the same time, the spring 4 is additionally arranged above each copper bush 3, and the sufficient contact area between the copper bush 3 and the nut plane on the motor wiring board is ensured through floating adjustment during electrifying, so that various potential safety hazards caused by insufficient contact area are avoided.
The connector device has the advantages that the connector device can help testers to switch the connection mode between star and triangle very quickly, and can ensure the correctness of the tested three-phase motor on the connection.
Drawings
FIG. 1 is a view showing the structure of the apparatus of the present invention.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
As shown in fig. 1, firstly, before the connector device of the present invention is applied, all connecting pieces on the terminal board of the motor to be tested need to be removed, the connector device is mounted on the terminal board of the motor up and down, and the lead wires (U1, V1, W1, U2, V2, W2) soldered on the copper sleeves of the connectors connected with the three-phase motor are connected into the electric cabinet through the connector device.
Then, a three-phase power supply is connected into the electric cabinet, the three-phase power supply on the comprehensive test instrument is generally directly used, the three-phase power supply is used for supplying power for the no-load test of the three-phase motor, and the three-phase power supply always adopts 220V, namely the 220V is still used for testing the no-load performance when the star connection is carried out. The single-phase 220V power supply is connected to a control board and used for supplying power to a control circuit; reliably grounding the equipment; the star connection method and the delta connection method are quickly switched through the interlocking of the relays and are displayed through the indicating lamps on the control panel; and judging whether the motor is qualified or not by using the inspection standard parameters input in the comprehensive test instrument in advance.
And (3) judging a test result:
1) if the star and triangle connection tests are qualified, the tested motor can be judged to be correctly wired.
2) If one connection test fails in the switching process, the situation that 2 outgoing lines are wrong in position in the outgoing lines is shown, and then the error checking and repairing can be carried out in time.
The connector device can help testers to switch the connection mode between star and triangle very quickly during testing, and can ensure the correctness of the tested three-phase motor on connection.
Claims (1)
1. The utility model provides a connector device of star and triangle of fast switch over three-phase motor connects method which characterized in that: the connector device consists of an upper cover plate (1), a lower cover plate (2), a copper sleeve (3), a spring (4) and a lead-out wire (5); wherein copper sheathing (3) are embedded between upper cover plate (1) and lower cover plate (2), spring (4) all increase above every copper sheathing (3), trompil on every copper sheathing (3), weld lead-out wire (5) on every trompil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121383565.4U CN215871102U (en) | 2021-06-22 | 2021-06-22 | Connector device for quickly switching star and triangle connection method of three-phase motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121383565.4U CN215871102U (en) | 2021-06-22 | 2021-06-22 | Connector device for quickly switching star and triangle connection method of three-phase motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215871102U true CN215871102U (en) | 2022-02-18 |
Family
ID=80334875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121383565.4U Active CN215871102U (en) | 2021-06-22 | 2021-06-22 | Connector device for quickly switching star and triangle connection method of three-phase motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215871102U (en) |
-
2021
- 2021-06-22 CN CN202121383565.4U patent/CN215871102U/en active Active
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