CN204989248U - Transformer reactance method winding deformation testing short circuit termination - Google Patents

Abstract

The utility model relates to a short-circuit wiring device for winding deformation test of transformer reactance method. The middle part of the column is shaped on the middle thread and is connected with the nut, and the rubber sleeve is sleeved on the lower part of the terminal post. The utility model has a reasonable design, connects the terminal post and the plug-in rod together, realizes the fast, reliable and convenient short-circuit connection function of the low-voltage side in the transformer reactance method winding deformation test, and facilitates the staff to conduct the reactance method winding deformation test The wiring work in the middle improves the test efficiency and ensures the validity of the field test results. It has the advantages of simple structure, safety and reliability, and convenient operation.

Description

Short-circuit wiring device for transformer reactance method winding deformation test

technical field

The utility model belongs to the technical field of transformer testing, in particular to a short-circuit wiring device for transformer reactance method winding deformation testing.

Background technique

After the transformer is subjected to a short-circuit impact, the winding may undergo overall or partial deformation, which significantly reduces the short-circuit resistance capability. The detection of winding deformation can detect winding defects in time, which plays an important role in preventing transformer short-circuit impact damage. Since the winding deformation reactance method has the advantages that the detection index can be quantified intuitively, is less affected by the test environment, and the test results are highly reproducible, this method is often used in the field to diagnose the transformer winding deformation. When the reactance method is used to detect the deformation of transformer windings, it is necessary to short-circuit the bushings on the medium and low voltage sides respectively. Bare copper wires are often wound on site, which not only consumes a lot of test preparation time, but also has unreliable short circuits. , affecting the validity of the test results, greatly reducing the test efficiency and reliability.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a short-circuit wiring device for transformer reactance method winding deformation test with simple structure, safe and reliable, and convenient operation.

The utility model solves its technical problem and realizes by taking the following technical solutions:

A short-circuit wiring device for transformer reactance method winding deformation test, including a terminal, a plug-in rod, a nut and a rubber sleeve. The cap is connected, and the rubber sleeve is set on the lower part of the terminal.

The upper part of the terminal post is formed with an upper thread, and the terminal post and the insertion rod are installed together through the upper thread.

Advantage and positive effect of the present utility model are:

The utility model has reasonable design, connects the terminal post and the plug-in rod together, and realizes the fast, reliable and convenient short-circuit connection function of the low-voltage side in the winding deformation test of the transformer reactance method, and facilitates the workers to conduct the winding deformation test of the reactance method. The wiring work in the process improves the test efficiency and ensures the validity of the field test results. It has the advantages of simple structure, safety and reliability, and convenient operation.

Description of drawings

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

detailed description

Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail:

A short-circuit wiring device for transformer reactance method winding deformation test, as shown in Figure 1, including a terminal 4, an insertion rod 1, a nut 2 and a rubber sleeve 3, and an upper part connected with the insertion rod is formed on the upper part of the terminal Thread 6, through the upper thread, the terminal and the plug-in rod can be installed together; the middle thread 5 is formed in the middle of the terminal and connected with the nut; the rubber sleeve is set on the lower part of the terminal for installation And disassemble the short-circuit wiring device to ensure reliable fixation and convenient operation of the device. The utility model can realize the short-circuit wiring function of the medium and low-voltage bushings of the transformer in two ways. One way is realized through the plug-in rod, which connects the plug-in rod to the terminal and connects it to the transformer bushing terminal board through plug-in. 7. To realize the short-circuit function, which meets the maximum diameter of the transformer bushing terminal board is 20mm; another way is to remove the plug-in rod and terminal when the diameter of the transformer bushing terminal board is too large (over 20mm). , through the way of nut and thread fixing, realize the short circuit function.

When the utility model is in use, it can be installed and disassembled in two situations:

1. When the diameter of the screw hole of the medium and low voltage bushing connecting plate of the transformer is less than 20mm,

(1) Connect the plug-in rod and the terminal through the upper thread;

(2) Remove the plug-in rod into the transformer bushing connecting plate, and repeatedly compress it from the rubber sleeve;

(3) After the test, pull out by shaking up and down.

2. When the diameter of the screw hole of the medium and low voltage bushing connecting plate of the transformer is greater than 20mm,

(1) Remove the plug-in rod on the terminal;

(2) Insert the terminal into the transformer bushing connecting plate, and fix it with the nut and the middle thread;

(3) After the test, remove the nut and pull out the terminal.

It should be emphasized that the embodiments described in the utility model are illustrative rather than restrictive, so the utility model includes but not limited to the embodiments described in the specific implementation, and those skilled in the art according to the utility model Other implementations derived from the new technical solution also belong to the scope of protection of the utility model.

Claims (2)

1. A short-circuit wiring device for transformer reactance method winding deformation test, characterized in that: it comprises a terminal, a plug-in rod, a nut and a rubber sleeve, and the described plug-in rod is installed on the upper end of the terminal, and is made in the middle of the terminal. There is a middle thread and is connected with the nut, and the rubber sleeve is set on the lower part of the terminal. 2. The short-circuit wiring device for winding deformation test of transformer reactance method according to claim 1, characterized in that: the upper part of the terminal is provided with an upper thread, and the terminal and the plug-in rod are installed together through the upper thread.