CN104991096A - Short circuit plug-in for test - Google Patents

Abstract

The invention discloses a short-circuit plug-in for testing, which is used for the handover test or routine test of a current transformer; body connected. The test short-circuit plug-in disclosed by the invention is mainly used for handover tests or routine tests of current transformers. The short-circuit plug-in uses a plurality of plugs, and each plug is connected through a conductor, and the conductor is connected to the conduction part of the plug. When in use, only need to hold the insulating part of the plug and insert the plug into the terminal block In the jack, the secondary winding of the current transformer can be turned on, so that the test can be carried out smoothly. When the short-circuit plug-in is in use, it only needs to be plugged into the jack, so the short-circuit of the terminal block is facilitated, the short-circuit is made faster, the short-circuit time is effectively shortened, and the efficiency of the test is improved.

Description

Short circuit plug for test

technical field

The invention relates to the technical field of electrical testing devices, and more specifically, to a short-circuit plug-in for testing.

Background technique

Current transformers are commonly used components in substations. Before handover and acceptance, handover tests are required, and after operation, regular routine tests are also required to ensure that the current transformers can be used normally and operate safely. When carrying out the transfer test and routine test, it is necessary to short-circuit the secondary winding of the current transformer to ground.

In the case of a short circuit in the secondary winding of an existing current transformer, bare copper wires or lead wires are usually used to directly short-circuit the outlet terminals. However, at present, the outlet terminals of the secondary winding are mainly terminal outlet wire structures, and the distance between the terminals on the terminal block is relatively close. The difficulty affects the efficiency of the experiment.

To sum up, how to provide a short-circuit plug-in for testing to facilitate the short-circuit of the terminal block, shorten the short-circuit time, and improve the efficiency of the test is an urgent problem to be solved by those skilled in the art.

Contents of the invention

In view of this, the object of the present invention is to provide a short-circuit plug-in for testing, which facilitates short-circuiting of terminal blocks, shortens short-circuiting time, and improves test efficiency.

In order to achieve the above object, the present invention provides the following technical solutions:

A short-circuit plug-in for testing is used for handover test or routine test of current transformers; it includes: a plurality of plugs, the plugs have conduction parts and insulation parts, and each of the plugs is connected through conductors.

Preferably, the conductor is a wire, and the wire is fixed on the plug by screws and communicates with the conduction part.

Preferably, the conductor is a conductive plate, and the conductive plate is provided with a protrusion that fits with the plug, so as to be inserted into the insulating part and communicate with the conducting part.

Preferably, the plug is a banana plug.

Preferably, a fish clip is also included, and the fish clip is plugged into the conducting part.

Preferably, the number of the plugs is consistent with the number of jacks on the terminal block.

The test short-circuit plug-in provided by the present invention is mainly used for the handover test or routine test of the current transformer. The short-circuit plug-in adopts a plurality of plugs, and each plug is connected through a conductor, and the conductor is connected with the conduction part of the plug. When in use, only need to hold the insulating part of the plug and insert the plug into the terminal block In the jack, the secondary winding of the current transformer can be turned on, so that the test can be carried out smoothly. When the short-circuit plug-in is in use, it only needs to be plugged into the jack, so the short-circuit of the terminal block is facilitated, the short-circuit is made faster, and the short-circuit time is effectively shortened, and the efficiency of the test is improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is the structural representation of the test short-circuit plug-in provided by the embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a test short-circuit plug provided by another embodiment of the present invention.

In Figure 1-2 above:

1 is a plug, 11 is a conducting part, 12 is an insulating part, 2 is a conductor, and 3 is a fish clip.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 2 , the test short-circuit plug-in provided by the embodiment of the present invention is mainly used for a handover test or a routine test of a current transformer. The test short-circuit plug-in includes a plurality of plugs 1 and conductors 2, the plugs 1 have a conduction portion 11 and an insulating portion 12, and each plug 1 is communicated with each other through the conductor 2, so as to connect the secondary of the current transformer in the test. Winding shorted. Specifically, the plug 1 can be selected as a banana plug, so as to ensure that the plug 1 is inserted into the socket more firmly.

Preferably, the conductor 2 is selected as a wire, and the conducting part 11 of the plug 1 is connected with the conducting part 11 by the conducting wire. When connecting, the conducting part 11 needs to be fixed together with a screw to avoid the loosening of the conducting part. It can be understood that the conductor 2 can also be a conductive plate, and the conductive plate is provided with a conductive protrusion that cooperates with the insulating part 12 on the plug 1. When shorting, it is only necessary to insert the protrusion on the conductive plate into the insulating part 12, and contact with the conduction part 11, it can realize short circuit.

The above-mentioned plug 1 is mainly used for the structure in which the outgoing terminals are terminal blocks. Since the distance between the terminals on the terminal block is small, it is inconvenient to use wires to short-circuit directly. The short-circuit plug-in provided in this embodiment can be used for short-circuiting. , just ensure that the diameter of the plug 1 matches the diameter of the jack, and then insert the plug 1 into the jack on the terminal block, which is simple and convenient, and saves short-circuit time and improves test efficiency. Specifically, the number of plugs 1 needs to be consistent with the number of jacks on the terminal block, so as to ensure that a short circuit can be realized.

In addition, since the structure of the outgoing terminal may be a binding post in addition to the terminal block, if the terminal is a binding post, it is difficult to insert only the plug 1 . At this time, a fish clip 3 can be added on the basis of the above-mentioned short-circuit plug-in, and the conduction part 11 of the plug 1 is inserted into one end of the fish clip 3, and conducts with the fish clip 3, and then the fish clip 3 can be clamped to the terminal To realize the short circuit. Here, the number of fish clips 3 is consistent with the number of terminal posts.

The test short-circuit plug-in provided by the embodiments of the present invention is mainly used for handover tests or routine tests of current transformers. The short-circuit plug-in uses a plurality of plugs 1, and each plug 1 is connected through a conductor 2, and the conductor 2 communicates with the conduction part 11 of the plug 1. When in use, only need to hold the insulating part of the plug 1 12 and insert the plug 1 into the jack on the terminal block, then the secondary winding of the current transformer can be conducted, so that the test can be carried out smoothly. When the short-circuit plug-in is in use, it only needs to be plugged into the jack, so the short-circuit of the terminal block is facilitated, the short-circuit is made faster, and the short-circuit time is effectively shortened, and the efficiency of the test is improved.

Each embodiment in this specification is described in a progressive form, and each embodiment focuses on the difference from other embodiments, and the similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. a test short-circuit insert, for commissioning test or the routine test of current transformer; It is characterized in that, comprising: multiple plug (1), described plug (1) has conducting portion (11) and insulation division (12), is communicated with between each described plug (1) by electric conductor (2).

2. test short-circuit insert according to claim 1, is characterized in that, described electric conductor (2) is wire, and described wire is screwed on described plug (1), and is communicated with described conducting portion (11).

3. test short-circuit insert according to claim 1, it is characterized in that, described electric conductor (2) is current-carrying plate, described current-carrying plate is provided with the projection coordinated with described plug (1), to insert described insulation division (12) and to be communicated with described conducting portion (11).

4. the test short-circuit insert according to any one of claims 1 to 3, is characterized in that, described plug (1) is banana plug.

5. test short-circuit insert according to claim 4, is characterized in that, also comprises fish folder (3), described fish folder (3) and described conducting portion (11) grafting.

6. test short-circuit insert according to claim 4, is characterized in that, the number of described plug (1) is consistent with the number of jack in terminal block.