Special short-circuit grounding device for closed terminal of current transformer (CT) at outlet of generator
By designing a special short-circuit grounding device for the CT sealing terminal of the generator outlet, the connecting parts of conductive wires, movable conductive sleeves and copper materials, the problems of unreliable and complicated short-circuit grounding in the prior art are solved, and high reliability and safe short-circuit grounding operation are achieved.
Patent Information
- Application Number
- CN202420581186.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-25
AI Technical Summary
The prior art is difficult to reliably short-circuit the closed CT terminals at the grounded generator outlet, and the operation is complicated, which can easily cause errors or terminal damage.
A special short-circuit grounding device is designed, including conductive wires, movable conductive sleeves and locking mechanisms, combined with conductive wires of copper material and spring clips, which can reliably short-circuit grounding CT sealing terminals.
The device improves the reliability of short-circuit grounding of the CT closed terminal, simplifies operation, avoids terminal damage and loosening, and improves the safety and efficiency of the test.
Smart Images
Figure CN222581512U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical equipment testing, in particular to a special short-circuit grounding device for a generator outlet CT closed terminal. Background Art
[0002] When conducting electrical primary-side high-voltage tests on generator sets in thermal power plants, in order to avoid possible abnormal conditions such as overvoltage or overcurrent that may cause danger and damage to testers and equipment, it is necessary to ensure that the secondary CT terminals are properly short-circuited and grounded before conducting the high-voltage test.
[0003] At present, since the generator outlet often uses closed CT terminals, the traditional pin-type shorting wire cannot be used, and the wiring is complicated, and it is easy to cause errors when opening the terminal for short-circuit grounding and then restoring. Therefore, the short-circuit grounding method often uses a method of winding and fixing multiple strands of soft copper wire one by one. This method is not only unreliable for short-circuiting, but also very cumbersome and time-consuming to operate, and may cause damage to the CT closed terminal. Utility Model Content
[0004] The utility model aims to provide a special short-circuit grounding device for generator outlet CT closed terminal, which can reliably short-circuit and ground the CT closed terminal, is safe and reliable, and is convenient for test personnel to operate.
[0005] The technical solution of the utility model is: a special short-circuit grounding device for a generator outlet CT closed terminal, comprising a conductive wire, a plurality of movable conductive sleeves are sleeved on the conductive wire, a locking mechanism matched with a conductive rod is arranged on the conductive sleeve, a conductive wire is connected to the conductive sleeve, and a spring clip for connecting the CT closed terminal is connected to the conductive wire.
[0006] Furthermore, the conductive wire is a copper wire, the conductive sleeve is a copper sleeve, and the conductive wire is a copper wire.
[0007] Furthermore, the locking mechanism comprises a radial screw hole which is arranged on the conductive sleeve and penetrates into the conductive sleeve, and a butterfly bolt for abutting the conductive wire is screwed on the radial screw hole.
[0008] Furthermore, the butterfly bolt is made of copper material.
[0009] Furthermore, the spring clip is made of copper material.
[0010] Compared with the prior art, the utility model has the following advantages:
[0011] The device can reliably short-circuit and ground the CT closed terminal, thereby improving the reliability of short-circuit and grounding the CT closed terminal to a certain extent; at the same time, it is easy for test personnel to operate, and is convenient to use and disassemble after the test is completed; it will not cause damage to the CT closed terminal and will not cause the terminal to loosen. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model;
[0013] In the figure: 1-conductive wire 2-conductive sleeve 3-butterfly bolt 4-spring clip 5-conductive wire. DETAILED DESCRIPTION
[0014] In order to make the above features and advantages of the present invention more understandable, embodiments are given below with reference to the accompanying drawings for detailed description, but the present invention is not limited thereto.
[0015] refer to Figure 1
[0016] A special short-circuit grounding device for generator outlet CT closed terminal, comprising a conductive wire 1, the conductive wire is a copper wire, the copper wire serves as the main body of the short-circuit device, and is used to achieve the conductivity of the short circuit. The conductive wire is sleeved with a plurality of conductive sleeves 2 that can move on the conductive wire, the conductive sleeves are copper sleeves. The conductive sleeve is provided with a locking mechanism that cooperates with the conductive rod so that the conductive sleeve can be locked after moving; the conductive sleeve is connected with a conductive wire 5, the conductive wire is a copper wire, and the conductive wire is connected with a spring clip 4 for connecting the CT closed terminal, and the spring clip corresponds to the CT closed terminal one by one. The spring clip and the copper sleeve can adjust the spacing according to the distance between the CT closed terminals, so as to short-circuit all CT terminals.
[0017] In this embodiment, the locking mechanism comprises a radial screw hole which is arranged on the conductive sleeve and penetrates into the conductive sleeve, and a butterfly bolt 3 for abutting against the conductive wire is screwed on the radial screw hole.
[0018] In this embodiment, the butterfly bolt is made of copper material.
[0019] In this embodiment, the copper wire, copper sleeve, butterfly nut and spring clip are all made of copper material, with good short-circuit performance and convenient use. The copper sleeve, spring clip, etc. can be installed and removed according to actual needs, easy to operate, and short-circuit safe and reliable.
[0020] In this embodiment, in order to improve versatility, the spring clip 4 should be at least applicable to a closed terminal with a diameter of 9 mm. Generally, the overall resistance of the dedicated short-circuit grounding device is not greater than 0.1Ω.
[0021] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the fixed connection to each other can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except where it is obviously impossible to use an one-piece molding process).
[0022] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.
[0023] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.
[0024] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.
Claims
1. A special short-circuit grounding device for a generator outlet CT closed terminal, comprising a conductive wire, characterized in that: A plurality of movable conductive sleeves are sleeved on the conductive wires, a locking mechanism matched with the conductive rod is arranged on the conductive sleeves, a conductive wire is connected to the conductive sleeves, and a spring clip for connecting the CT closed terminal is connected to the conductive wires.
2. A special short-circuit grounding device for generator outlet CT closed terminal according to claim 1, characterized in that: The conductive wire is a copper wire, the conductive sleeve is a copper sleeve, and the conductive wire is a copper wire.
3. A special short-circuit grounding device for generator outlet CT closed terminal according to claim 1 or 2, characterized in that: The locking mechanism comprises a radial screw hole which is arranged on the conductive sleeve and penetrates into the conductive sleeve, and a butterfly bolt for abutting against the conductive wire is screwed on the radial screw hole.
4. A special short-circuit grounding device for generator outlet CT closed terminal according to claim 3, characterized in that: The butterfly bolt is made of copper material.
5. A special short-circuit grounding device for generator outlet CT closed terminal according to claim 1, 2 or 4, characterized in that: The spring clip is made of copper material.