CN211554237U - Experimental termination of generalized type circuit breaker - Google Patents

Abstract

The utility model discloses an experimental termination of generalized type circuit breaker, including the shell, locate shell surface's change over switch and connection socket, connect through internal circuit between change over switch and the connection socket for 10~500kV voltage level split phase, the experimental wiring of the integrative circuit breaker of three-phase, it is different according to the test equipment type simultaneously, switch different return circuits in order to satisfy experimental requirement. The utility model has the advantages of application scope is wide, the wiring is reliable, no electric shock risk, and finished product operating method is simple, does not have exposed conductor, and the wiring standard is unified fast. Use this novel applicable to the experimental divide-shut brake circuit wiring of various types of circuit breakers, once need not to change the wire after the wiring is accomplished and can accomplish whole testing process, improved experimental standardization, security and the agility of circuit breaker by a wide margin.

Description

Experimental termination of generalized type circuit breaker

Technical Field

The utility model relates to a wiring instrument especially indicates an experimental termination of generalized type circuit breaker.

Background

At present, in a transformer substation circuit breaker test project, an internal switching-on control loop in a circuit breaker terminal box needs to be untied by a terminal on one side of a circuit breaker, a secondary wire is disconnected from a connection test wire, but due to test requirements, the untied secondary wire has an exposed part and conflicts with the existing safety regulation that one secondary wire is disassembled and wrapped, and therefore on-site power grid and personal risk hidden dangers are caused. In addition, because the on-site secondary wiring loop terminals of the circuit breaker are more, the three loops of the on-site, the off-site and the negative electricity of the existing test device can not meet the on-site requirements, and in the test of the circuit breaker, especially the circuit breaker with the voltage class of 220kV and above, the circuit breaker needs to be switched among different loops, and the number needs to be checked again to confirm the correctness every time the line is changed, so that the working efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an experimental termination of generalized type circuit breaker for connect divide-shut brake circuit in the circuit breaker is experimental. The problems of exposed wiring terminals, poor adaptability and trouble in wire connection and replacement existing in the background of the current situation can be solved.

The utility model discloses an experimental termination of generalized type circuit breaker can be used to present 10~500kV voltage level split phase, the experimental wiring of the integrative circuit breaker of three-phase, and is different according to the test equipment type simultaneously, and changeable different return circuits need not to change over to connect the test wire after just wiring is accomplished in order to satisfy experimental requirement, and it is experimental that once wiring can be accomplished. The technical scheme of the utility model is specifically as follows:

the utility model provides an experimental termination of generalized type circuit breaker, includes the shell, locates change over switch and the connection socket on shell surface, connects through inner circuit between change over switch and the connection socket for 10~500kV voltage class phase splitting, the experimental wiring of the integrative circuit breaker of three-phase, different return circuits are switched in order to satisfy experimental requirement according to the test equipment type difference simultaneously.

Further, the internal circuit comprises a closing loop, an opening loop and a public negative electricity loop; the switching-off loop comprises a first switching-off loop and a second switching-off loop, and the public negative electricity loop comprises a first public negative electricity loop and a second public negative electricity loop; the closing loop, the first opening loop and the second opening loop are all provided with A, B, C three-phase output interfaces, and the output mode can be selected to be single phase (A phase) or A, B, C three phase.

Furthermore, the change-over switch comprises a loop selection switch and a split phase selection switch, wherein the loop selection switch controls the output modes of the opening loop and the public negative electricity loop to be a first opening loop, a first public negative electricity loop or a second opening loop and a second public negative electricity loop; the output modes of the switching-on circuit and the switching-off circuit which can be selected by controlling the opening and closing of the split-phase selection switch are single-phase output or three-phase output.

Furthermore, the connection socket comprises a closing signal input socket, a switching-off signal input socket, a public negative electricity input socket, a closing output signal socket, a first switching-off signal output socket, a second switching-off signal output socket, a first public negative electricity output socket and a second public negative electricity output socket; the switching-on output signal socket, the first switching-off signal output socket and the second switching-off signal output socket are all provided with A, B, C three-phase sockets.

Compared with the prior art, the utility model has the advantages of it is following:

1. the wiring is safe, and after the wiring is finished, no exposed conductor part exists in the working circuit, so that the power grid and personal risks caused by mistaken touch are avoided.

2. The device is high in adaptability and can be suitable for test line connection of a switching-on loop in the existing 10-500 kV voltage class circuit breaker test. And for the phase-splitting circuit breaker or the circuit breaker with 2 opening and closing circuits, switching can be carried out through the change-over switch without disconnecting the test wire by a worker.

3. The work efficiency is improved, and the complex wire detaching and checking work is avoided due to the fact that the loop is switched in the mode of the change-over switch, and the work efficiency is greatly improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the internal circuit of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some examples of the present invention, not all examples. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

The experimental wiring instrument of circuit breaker of this embodiment for connect divide-shut brake circuit and test equipment's wiring instrument in the transformer substation's circuit breaker is experimental.

As shown in fig. 1, the tool of the present embodiment includes a housing 1, a changeover switch 3 provided on a surface of the housing 1, and a connection socket 4. The change-over switch 3 comprises a loop selection switch 3.1 and a split-phase selection switch 3.2. The connection socket 4 comprises an input socket and an output socket, wherein the input socket comprises a closing signal input socket 4.1, an opening signal input socket 4.2 and a public negative electricity input socket 4.3. The output sockets comprise a closing output signal socket 4.4, a first opening signal socket 4.5, a second opening signal socket 4.6, a first public negative electricity output socket 4.7 and a second public negative electricity output socket 4.8.

The change-over switch 3 is connected with the wiring socket 4 through the internal circuit 2, is used for the test wiring of 10-500 kV voltage class split-phase and three-phase integrated circuit breaker, and simultaneously switches different loops according to different types of test equipment to meet test requirements.

The function of the comprehensive breaker test wiring device of the embodiment is to realize switching-on and switching-off signal three-way input conversion used in breaker tests to 3-11 adjustable-way output conversion. The conversion function is performed by the internal circuit 2.

As shown in fig. 2, the internal circuit 2 is functionally divided into three loops, namely, a closing loop 2.1, an opening loop, and a common negative electricity loop. The separating brake loop comprises a first separating brake loop 2.2 and a second separating brake loop 2.3, and the common negative electricity loop comprises a first common negative electricity loop 2.4 and a second common negative electricity loop 2.5. The closing loop 2.1, the first opening loop 2.2 and the second opening loop 2.3 are all configured with A, B, C three-phase output interfaces, and the output mode can be selected to be single-phase (A-phase) or A, B, C three-phase output.

The switching-on loop 2.1 and the switching-off loop can select a single-phase (A-phase) or three-phase output mode through the split-phase selection switch 3.2.

The separating brake loop and the common negative electricity loop can select the output loop to be a first separating brake loop 2.2 and a first common negative electricity loop 2.4 or a second separating brake loop 2.3 and a second common negative electricity loop 2.5 through a loop selection switch 3.1. The conversion of test output requirements of the 10-500 kV circuit breaker is completed through different combination modes of the loop selection switch 3.1 and the split-phase selection switch 3.2.

Taking a 10kV circuit breaker and a 220kV split-phase circuit breaker commonly used in a transformer substation as an example, referring to the attached drawing 1, when the circuit breaker is used, a switching-off signal line and a public negative electric signal line led out from a circuit breaker test device are connected into a switching-on signal input socket 4.1, a switching-off signal input socket 4.2 and a public negative electric signal input socket 4.3, the switching-off and switching-on signal lines and the public negative electric signal line in a circuit breaker control loop are disconnected from a terminal row and then are connected into an output socket on a shell 1 after being switched through a standard test line, the 10kV circuit breaker is respectively connected into a switching-on output signal socket 4.4A phase, a first switching-off signal output socket 4.5A phase and a first; because of more signals, the 220kV split-phase circuit breaker accesses a closing signal wire which is separated from a terminal strip into A, B, C phases of a closing output signal socket 4.4 according to the connection mode of an internal control loop of the 220kV split-phase circuit breaker, a first separating brake loop signal wire and a second separating brake signal wire are respectively accessed into A, B, C phases of a first separating brake signal output socket 4.5 and A, B, C phases of a second separating brake signal output socket 4.6, and a first public negative electricity signal wire are accessed into a first public negative electricity output socket 4.7 and a second public negative electricity output socket 4.8.

After the wiring is completed, when the circuit breaker is tested, the loop selection switch 3.1 is placed in the 1 st gear, and the split-phase selection switch 3.2 selects a single phase, so that the test requirement of the 10kV circuit breaker can be met. The loop selection switch 3.1 is set to 2, and the split-phase selection switch 3.2 selects three phases. The test requirement of the 220kV split-phase circuit breaker can be met.

The utility model discloses simple structure, convenient to use, can effectively improve the operating efficiency, guarantee wiring safety, it is convenient to trade the line.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. The utility model provides an experimental termination of generalized type circuit breaker which characterized in that: the circuit breaker testing device comprises a shell, a change-over switch and a wiring socket which are arranged on the surface of the shell, wherein the change-over switch and the wiring socket are connected through an internal circuit and are used for the test wiring of a 10-500 kV voltage class split-phase and three-phase integrated circuit breaker, and different loops are switched to meet the test requirements according to different types of testing equipment; the internal circuit comprises a closing loop, an opening loop and a public negative electricity loop; the switching-off loop comprises a first switching-off loop and a second switching-off loop, and the public negative electricity loop comprises a first public negative electricity loop and a second public negative electricity loop; the closing loop, the first opening loop and the second opening loop are all provided with A, B, C three-phase output interfaces, and the output mode can be selected to be single phase or A, B, C three phase.

2. The integrated circuit breaker test wiring device according to claim 1, characterized in that: the change-over switch comprises a loop selection switch and a split-phase selection switch, wherein the loop selection switch controls the output modes of the separating brake loop and the public negative electricity loop to be a first separating brake loop and a first public negative electricity loop or a second separating brake loop and a second public negative electricity loop; the output modes of the switching-on circuit and the switching-off circuit which can be selected by controlling the opening and closing of the split-phase selection switch are single-phase output or three-phase output.

3. The integrated circuit breaker test wiring device according to claim 1, characterized in that: the connection socket comprises a closing signal input socket, a switching-off signal input socket, a public negative electricity input socket, a closing output signal socket, a first switching-off signal output socket, a second switching-off signal output socket, a first public negative electricity output socket and a second public negative electricity output socket; the closing signal input socket, the opening signal input socket and the public negative electricity input socket are single-phase inputs, and the closing output signal socket, the first opening signal output socket and the second opening signal output socket are all provided with A, B, C three-phase sockets.

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