CN203800341U - Terminal row test connecting head - Google Patents

Abstract

The utility model discloses a terminal row test joint, which comprises a plug for connecting the terminal row. One end of the plug has an external thread, and the other end is connected with a sleeve for inserting the test plug. The outside of the sleeve is The sleeve is provided with an insulating layer, and the sleeve is provided with a conductive liner. The terminal block test connector of the utility model can input the analog quantity into the protection device without opening the terminal block wiring, which improves the work efficiency and safety.

Description

Terminal block test connector

technical field

The utility model relates to an electric power connector, in particular to a terminal block test connector.

Background technique

The secondary line terminal block of the relay protection screen is divided into test terminal block and non-test terminal block. Figure 2 shows the test terminal block, Figure 3 shows the non-test terminal block, and Figure 4 shows the existing test plug 6. As shown in FIG. 2 , the existing test terminal block 1 is directly provided with a test socket 2 , and the cable core 3 is directly connected to the test terminal block 1 . On the non-test terminal block 4 shown in Figure 3, the cable core 3 is also directly connected to the non-test terminal block, but there is no test socket on the non-test terminal block 4, only one screw hole 5, which was originally used To install the short circuit (not shown in Figure 3), the test plug cannot be inserted. The traditional method is to remove the cable core 3 from the terminal block, and use the test clip to clamp the cable core 3 to pass in the analog value. Maintenance and debugging are very inconvenient and dangerous.

Utility model content

In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a terminal block test connector capable of inputting analog values into the protection device without opening the terminal block wiring.

In order to achieve the above purpose, the terminal block test joint provided by the utility model includes a plug for connecting the terminal block, one end of the plug has an external thread, and the other end is connected with a sleeve for inserting the test plug. An insulating layer is sheathed on the outer side of the casing, and a conductive liner is arranged inside the casing.

Preferably, the conductive liner is a copper liner.

Compared with the prior art, by adopting the terminal block test connector of the utility model, the analog quantity can be input into the protection device without opening the terminal block wiring, which improves the work efficiency and safety.

Description of drawings

Fig. 1 is a schematic structural view of a terminal block test connector of the present invention (a test plug is shown therein).

FIG. 2 is a schematic structural diagram of an existing test terminal block.

FIG. 3 is a schematic structural diagram of an existing non-test terminal block.

Fig. 4 is a schematic structural diagram of an existing test plug.

Detailed ways

Below in conjunction with accompanying drawing, the structure of the present utility model is described in further detail.

As shown in Figure 1, the terminal block test connector provided by the utility model includes a plug 10 for connecting the terminal block. One end of the plug 10 has an external thread, and the other end is connected with a sleeve for inserting the test plug 6. The tube 11 is provided with an insulating layer 13 on the outside of the sleeve 11 , and a conductive liner 12 is provided inside the sleeve 11 . As shown in FIG. 2 , FIG. 3 and FIG. 4 , the existing test terminal block 1 has a test socket 2 which can be directly inserted into the test plug 6 . But the existing non-test terminal row 4 is not provided with a jack, but only provided with a screw hole 5 for installing a short circuit piece, so the external thread of one end of the plug 10 of the terminal row test connector of the present utility model can be directly threaded. To the screw hole 5, at the same time, the short circuit can be fixed. In addition, the sleeve 11 provided at the other end of the plug 10 can form a socket, the insulating layer 13 outside the sleeve 11 can ensure safety, and the conductive liner 12 can ensure smooth conduction. So far, it is only necessary to insert the existing test plug 6 into the bushing 11 on the plug 10 during operation, and the analog value can be input into the protection device without opening the terminal block wiring, which improves the work efficiency and ensures safety.

In addition, in the present utility model, preferably, the conductive liner 12 is a copper liner.

Certainly, what is described above is a preferred embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the utility model. Retouching is also regarded as the scope of protection of the present utility model.

Claims (2)

1. terminal board test joint, is characterized in that, comprises the plug for splicing ear row, one end of described plug has external screw thread, the other end is connected with a sleeve pipe plugging for confession test plug, and described outside of sleeve is arranged with insulating barrier, is provided with conduction inner bag in described sleeve pipe.

2. terminal board test joint as claimed in claim 1, is characterized in that, described conduction inner bag is copper inner bag.