CN202454880U - Current shorting stub with lockable plug - Google Patents

Abstract

The utility model discloses a current shorting stub with a lockable plug. The current shorting stub is characterized by comprising four current shorting stub units, each current shorting stub unit comprises a screw (2), external threads of the screw (2) are connected with an outer sleeve (1), the front end of the outer sleeve (1) is connected with the lockable plug (3), grooves are symmetrically arranged on the lockable plug (3), one end of the screw (2) is inserted in the lockable plug (3), a handle (4) is connected with the position below the outer sleeve (1), and a short circuit lead (5) is arranged in the handle (4). The current shorting stub is simple and rapid in use, obviously improves short circuit speed of current secondary circuit, quickens construction progress, shortens production time, and improves safety of electric accessories and workers.

Description

A plug-lockable current short-circuit wire

Technical field:

The utility model relates to a plug-lockable current short connection, which belongs to the technical field of substation inspection and maintenance of electric power systems.

Background technique:

In relay protection work, it is often necessary to short-circuit the secondary circuit of the current transformer. If the short-circuiting method is improper, it may cause the secondary circuit of the current transformer to open, generate high voltage and burn the equipment or even endanger personal safety. Therefore, the current transformer The quality of secondary circuit short circuit is of great significance to electrical equipment and personal safety.

At present, the current secondary circuit terminal blocks of relay protection devices all use Phoenix terminals. When short-circuiting the current secondary circuit, the existing equipment cannot be short-circuited at the terminal block of the protective screen when the equipment is running, and can only be used outdoors. Short circuit at the terminal box in the high-voltage equipment area. According to statistics, the average time to short-circuit the secondary circuit of the current is 12.5 minutes per group, which takes a long time and there is a hidden danger of the current circuit being open due to insufficient screw fastening.

Utility model content:

The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a device that does not need to go to the outdoor high-voltage equipment area. Plug-lockable short-circuit wiring for the safety of electrical equipment and workers.

The purpose of this utility model can be achieved through the following measures: a plug lockable current short connection, which is characterized in that it includes four current short connection units, each current short connection unit includes a screw, and the external thread of the screw is connected to the jacket, the jacket The lockable plug is connected to the front end of the lockable plug, and grooves are symmetrically opened on the lockable plug, and one end of the screw rod is inserted into the lockable plug, and the handle is connected under the jacket, and a short-circuit wire is arranged in the handle.

Compared with the prior art, the utility model can produce the following positive effects: the utility model is equipped with screws behind the plug, the plug expands when tightened, the contact is tight, the use is quick, the safety is good, the adjustment performance is good, and it is easy to process. The short wires are connected end to end, the connection is reliable and good, the use is convenient, and the cost is low. Use the plug lockable current short circuit to short the current secondary circuit at the terminal block of the protective screen, without going to the outdoor high-voltage equipment area. It is simple and fast to use, and the average time is 2.5 minutes per group, which significantly improves the short circuit of the current secondary circuit. Speed, speed up the construction progress, shorten the working time. The plug-lockable current short-circuit wiring solves the safety problem of short-circuiting the secondary circuit of the current transformer, and improves the safety of electrical equipment and staff.

Description of drawings:

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

Fig. 2 is the structural representation of the screw rod of Fig. 1

FIG. 3 is a side view of the lockable plug of FIG. 1 .

The specific embodiment: the specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing:

Embodiment: A plug-lockable current short wiring (see Figure 1 and Figure 2), which includes four current short wiring units, each current short wiring unit includes a screw 2, and the screw 2 is externally threaded to connect the jacket 1 to the jacket 1 The front end is connected with a lockable plug 3, and the lockable plug 3 is symmetrically provided with a groove 6, and one end of the screw 2 is inserted into the lockable plug 3, and the screw 2 is tightened so that the lockable plug 3 expands. The outer cover 1 is connected with the handle 4, and the handle 4 is provided with a short-circuit wire 5. For external insulation, a rubber is provided outside the jacket 1 , a rubber is provided outside the handle 4 , and a rubber is provided outside the nut end of the screw rod 2 .

When in use, insert the lockable plug 3 of the plug-lockable current short wiring into the current secondary circuit terminal, tighten the screw, the lockable plug expands, and the contact is tight.

Claims (1)

1. A plug lockable current short wiring, characterized in that it includes four current short wiring units, each current short wiring unit includes a screw (2), and the screw (2) is externally threaded to connect the jacket (1), the jacket ( The front end of 1) is connected to the lockable plug (3), and the lockable plug (3) is symmetrically provided with grooves (6), and one end of the screw (2) is inserted into the lockable plug (3), and the outer jacket (1) is connected to the handle (4), the handle (4) is provided with a short-circuit wire (5).

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