CN210199260U

CN210199260U - Novel time characteristic testing device

Info

Publication number: CN210199260U
Application number: CN201921073963.9U
Authority: CN
Inventors: Xiewei Yang; 杨协伟; Qiyan Zheng; 郑其彦; Yingting Shen; 沈英庭; Xiaocong Sun; 孙晓聪; Min Zhang; 张敏; Xibo Xing; 邢惜波
Original assignee: Guangdong Power Grid Co Ltd; Jieyang Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Jieyang Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-03-27
Anticipated expiration: 2029-07-10

Abstract

The utility model relates to an electric power maintenance equipment technical field specifically discloses a novel time characteristic test device, include the casing and be located circuit board in the casing, be equipped with outside ground terminal on the casing, be equipped with A wiring terminal, B wiring terminal, C wiring terminal, N binding post and inside ground terminal mutually on the circuit board, A wiring terminal, B wiring terminal, C wiring terminal and N binding post mutually four all with inside ground terminal insulating connection. The utility model provides a novel time characteristic test device utilizes the N line as the communal line during the test, pulls open 500kV double break circuit breaker one side earthing knife-switch, can test double break both ends data simultaneously, can alleviate operation personnel work load, improves work efficiency.

Description

Novel time characteristic testing device

Technical Field

The utility model relates to an electric power maintenance equipment technical field especially relates to a novel time characteristic test device.

Background

The debugging work of the 500kV double-break circuit breaker of the transformer substation is an important project of the test work of primary equipment of the transformer substation, and the debugging work is mainly carried out by adopting the existing time characteristic tester at present. As shown in fig. 1, since the conventional time characteristic tester generally includes an external ground terminal 2 and an internal ground terminal 3, it is necessary for an operator to pull and close the grounding switch for multiple times to perform a matching test using the conventional time characteristic tester, which consumes a long time and involves a large operation risk.

Therefore, improvement of the time characteristic tester is required, which reduces the workload of the operator and improves the work efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel time characteristic test device can alleviate operation personnel work load, improves work efficiency.

To achieve the above object, the present invention provides a novel time characteristic testing device, which comprises a housing and a circuit board located in the housing, wherein the housing is provided with an external grounding terminal, the circuit board is provided with an A-phase wiring terminal, a B-phase wiring terminal, a C-phase wiring terminal, an N-phase wiring terminal and an internal grounding terminal,

the phase A wiring terminal, the phase B wiring terminal, the phase C wiring terminal and the phase N wiring terminal are all in insulation connection with the internal grounding terminal; the external ground terminal and the internal ground terminal are connected in an insulated manner, and the novel time characteristic testing device further includes:

one end of the phase line A is electrically connected with the phase-A wiring terminal, and the other end of the phase line A extends to the outside of the shell;

one end of the B-phase line is electrically connected with the B-phase wiring terminal, and the other end of the B-phase line extends to the outside of the shell;

one end of the C-phase line is electrically connected with the C-phase wiring terminal, and the other end of the C-phase line extends to the outside of the shell;

and one end of the N wire is electrically connected with the N wiring terminal, and the other end of the N wire extends to the outside of the shell.

Preferably, the joint of the phase line A and the phase wiring terminal A, the joint of the phase line B and the phase wiring terminal B, the joint of the phase line C and the phase wiring terminal C, and the joint of the phase line N and the phase wiring terminal N are coated with heat-resistant insulating grease.

Preferably, the working temperature of the heat-resistant insulating mastic is-40 to 260 degrees.

Preferably, the outside of the housing is coated with a shielding layer.

The beneficial effects of the utility model reside in that: the utility model provides a novel time characteristic test device utilizes the N line as the communal line during the test, pulls open 500kV double break circuit breaker one side earthing knife-switch, can test double break both ends data simultaneously, can alleviate operation personnel work load, improves work efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a conventional time characteristic tester provided in the background art;

fig. 2 is a schematic structural diagram of the novel time characteristic testing apparatus according to the embodiment.

In the figure:

1. a housing;

2. an external ground terminal;

3. an internal ground terminal;

4. a phase line;

5. a phase line B;

6. a phase line C;

7. n lines;

8. heat resistant insulating mastic.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 2, the present embodiment provides a novel time characteristic testing apparatus, which includes a housing 1 and a circuit board located in the housing 1. The shell body 1 is provided with an external grounding terminal 2, and the circuit board is provided with an A-phase wiring terminal, a B-phase wiring terminal, a C-phase wiring terminal, an N wiring terminal and an internal grounding terminal 3. The phase A wiring terminal, the phase B wiring terminal, the phase C wiring terminal and the phase N wiring terminal are all connected with the internal grounding terminal 3 in an insulating way; the external ground terminal 2 and the internal ground terminal 3 are connected in an insulated manner.

The novel time characteristic testing device further comprises a phase line A4, a phase line B5, a phase line C6 and a phase line N7. One end of the phase line A4 is electrically connected with the phase line A terminal, and the other end of the phase line A4 extends to the outside of the shell 1; one end of the phase line B5 is electrically connected with the phase line B terminal, and the other end of the phase line B extends to the outside of the shell 1; one end of the C-phase line 6 is electrically connected with the C-phase wiring terminal, and the other end extends to the outside of the shell 1; one end of the N wire 7 is electrically connected with the N wiring terminal, and the other end of the N wire extends to the outside of the shell 1.

Preferably, the joint of the phase line 4 and the phase A wiring terminal, the joint of the phase line 5 and the phase B wiring terminal, the joint of the phase line 6 and the phase C wiring terminal, and the joint of the phase N wire 7 and the phase N wiring terminal are coated with heat-resistant insulating grease 8. Specifically, the heat-resistant insulating mastic 8 can prevent high-voltage breakdown, improving the reliability of the novel time characteristic testing device.

Preferably, the working temperature of the heat-resistant insulating mastic 8 is-40 to 260 °. It can be understood that the heat-resistant insulating mastic 8 should not dry and coke at high temperatures and freeze at low temperatures to ensure good insulating properties.

In this embodiment, the outer side of the housing 1 is coated with a shielding layer. Specifically, the shielding layer can improve the anti-interference capability of the novel time characteristic testing device.

Specifically, the function improvement of the novel time characteristic testing device provided by the embodiment on the traditional time characteristic tester mainly comprises 3 key points, ①, namely, the connection between an internal N wiring terminal and an internal grounding terminal 3 in the time characteristic tester is cut off, so that an N line 7 is not grounded, ② enhances the internal insulation strength of an internal A phase line 4, a B phase line 5, a C phase line 6 and the N line 7, and when the ③ test is carried out, the N line 7 is used as a common line, a grounding knife switch at one side of a 500kV double-break circuit breaker is pulled open, and data at two ends of a double break can be tested simultaneously.

The novel time characteristic testing device provided by the embodiment has the following advantages:

① the operator does not need to cooperate with the operation for many times, the workload is small, and the risk is small;

② the operation personnel do not need to operate for many times, the workload is small, the operation time is reduced, the risk is small, and the efficiency is improved;

③ is improved on the existing time characteristic tester, and the time characteristic tester does not need to be produced and manufactured by recombination, thus being convenient to popularize.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A novel time characteristic testing device comprises a shell (1) and a circuit board located in the shell (1), wherein an external grounding terminal (2) is arranged on the shell (1), and an A-phase wiring terminal, a B-phase wiring terminal, a C-phase wiring terminal, an N-phase wiring terminal and an internal grounding terminal (3) are arranged on the circuit board, and the novel time characteristic testing device is characterized in that the A-phase wiring terminal, the B-phase wiring terminal, the C-phase wiring terminal and the N-phase wiring terminal are all in insulation connection with the internal grounding terminal (3); the external ground terminal (2) and the internal ground terminal (3) are connected in an insulated manner, and the novel time characteristic testing device further includes:

the phase line A (4), one end of the phase line A (4) is electrically connected with the phase line A terminal, and the other end of the phase line A (4) extends to the outside of the shell (1);

the phase line B (5), one end of the phase line B (5) is electrically connected with the phase line B terminal, and the other end of the phase line B (5) extends to the outside of the shell (1);

one end of the C-phase line (6) is electrically connected with the C-phase wiring terminal, and the other end of the C-phase line (6) extends to the outside of the shell (1);

the N line (7), the one end of N line (7) with N binding post electricity is connected, and the other end extends to the outside of casing (1).

2. The novel time characteristic testing device according to claim 1, wherein a joint of the phase line A (4) and the phase line A terminal, a joint of the phase line B (5) and the phase line B terminal, a joint of the phase line C (6) and the phase line C terminal, and a joint of the phase line N (7) and the phase line N terminal are coated with heat-resistant insulating grease (8).

3. The new time characteristic testing device according to claim 2, characterized in that the working temperature of the heat resistant insulating mastic (8) is-40 ° to 260 °.

4. The new temporal characteristic testing device according to claim 1, characterized in that the outside of the casing (1) is coated with a shielding layer.