CN107462830B - Synchronization test method and device for intelligent miniature circuit breaker - Google Patents

Abstract

The invention discloses a kind of intelligent micro-circuit breaker synchronism test methods, including switching synchronization to test, step are as follows: S01, be shorted the input terminal parallel connection of all poles of breaker and access power supply L line；S02, the operation handle of breaker is pushed to make its combined floodgate manually, record each output end of breaker obtains the electric time；S03, each output end of breaker is obtained to difference between electric time maximum value and time minimum value as the time same period of closing a floodgate, closes a floodgate the time same period when the time same period of closing a floodgate is less than standard, then judges breaker qualification, be otherwise unqualified.Test method of the invention has many advantages, such as to improve breaker closing reliability.The invention also discloses a kind of intelligent micro-circuit breaker synchronism experimental rig, including power supply unit and time test unit, the input terminal of the pole the L access breaker of power supply unit, the input terminal of time test unit is connected with the output end of breaker.Experimental rig of the invention has many advantages, such as that structure is simple, easy to operate.

Description

Synchronization test method and device for intelligent miniature circuit breaker

technical field

The invention mainly relates to the technical field of intelligent miniature circuit breaker testing, in particular to an intelligent miniature circuit breaker synchronization test method and device.

Background technique

With the development of national economy and technology and the improvement of people's living standards, electric energy has become one of the indispensable energy sources in people's production and life. As the only tool in the power system to measure the electric energy used by users, the importance of the electric energy meter is self-evident.

At the same time, due to the development of today's intelligent and unmanned technology, smart energy meters with remote power-off and switch-on functions have become mainstream energy meters in today's power systems. This type of energy meter generally has an external circuit breaker, and the controller of the energy meter controls the opening and closing of the peripheral circuit breaker according to the data of the energy meter and the user's data, so as to realize the remote power-off and closing of the user. Since the circuit breaker directly controls the power-off and closing of the user, higher requirements are put forward for its reliability. failure.

Contents of the invention

The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides an intelligent miniature circuit breaker synchronization test method to improve the working reliability of the circuit breaker, and correspondingly provides a simple structure and easy operation Intelligent miniature circuit breaker synchronization test device.

In order to solve the problems of the technologies described above, the technical solution proposed by the present invention is:

An intelligent miniature circuit breaker synchronization test method, including the closing synchronization test, the specific steps are:

S01. Connect the input ends of all poles of the circuit breaker in parallel and connect them to the L line of the power supply;

S02. Manually push the operating handle of the circuit breaker to close the circuit breaker, and record the time when each output terminal of the circuit breaker is energized;

S03. The difference between the maximum value of the time when each output terminal of the circuit breaker is energized and the minimum value of the time is used as the closing synchronization time. When the closing synchronization time is less than the standard closing synchronization time, it is judged that the circuit breaker is qualified, otherwise it is not qualified.

As a further improvement of the above technical solution:

In step S03, when the circuit breaker is qualified, the value of the output terminal of the N line with open and closed neutral pole is smaller than the value of each output terminal of the L line.

In step S03, when the circuit breaker is qualified, if the value of the output terminal of the N line with the protection pole is greater than the value of each output terminal of the L line, then the value of the output terminal of the N line minus the value of each output terminal of the L line is less than the standard closing synchronization time.

In step S02, the middle part or the two ends of the operating handle of the circuit breaker are manually pushed to close the circuit breaker.

It also includes the opening synchronization test, the specific steps are:

S11. Connect the output terminals of all poles of the circuit breaker in parallel and connect them to the N line of the power supply, and connect the input terminals to the L line of the power supply respectively;

S12. Manually push the operating handle of the circuit breaker to open the circuit breaker, and record the time of voltage change at each input terminal of the circuit breaker;

S13. The difference between the maximum time value and the minimum time value of the voltage change at each input terminal of the circuit breaker is used as the opening synchronous time. When the closing synchronous time is less than the standard opening synchronous time, it is judged that the circuit breaker is qualified, otherwise it is not qualified.

In step S13, when the circuit breaker is qualified, the value of the input terminal of the N line with open and close neutral pole is greater than the value of each input terminal of the L line.

In step S13, when the circuit breaker is qualified, if the value of the input terminal of the N line with the protection pole is greater than the value of each input terminal of the L line, then the value of the input terminal of the N line minus the value of each input terminal of the L line is less than the standard opening synchronization time.

In step S12, the middle part or the two ends of the operating handle of the circuit breaker are manually pushed to close the circuit breaker.

The invention also discloses an intelligent miniature circuit breaker synchronization test device, which includes a power supply unit and a time test unit, the L pole of the power supply unit is connected to the input end of the circuit breaker, and the input end of the time test unit is connected to the circuit breaker connected to the output.

As a further improvement of the above technical solution:

The time testing unit is a power-on time tester.

Compared with the prior art, the present invention has the advantages of:

The intelligent miniature circuit breaker synchronization test method of the present invention detects the closing synchronization index of the circuit breaker, which can ensure that the moving contacts of all poles of the circuit breaker are kept mechanically connected synchronously, and improve the reliability of the circuit breaker in the field. . The intelligent miniature circuit breaker synchronization test device of the invention has the advantages of simple structure, convenient operation and easy realization.

Description of drawings

Fig. 1 is a flow chart of the method of the present invention.

Fig. 2 is a structural diagram of the device of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 1, the synchronous test method of the intelligent miniature circuit breaker in this embodiment includes the synchronous test of closing, and the specific steps are:

S01. Connect the input ends of all poles of the circuit breaker in parallel and connect them to the L line of the power supply;

S02. Manually push the operating handle of the circuit breaker to close the circuit breaker, and record the time when each output terminal of the circuit breaker is energized;

S03. The difference between the maximum value of the time when each output terminal of the circuit breaker is energized and the minimum value of the time is used as the closing synchronization time. When the closing synchronization time is less than the standard closing synchronization time, it is judged that the circuit breaker is qualified, otherwise it is not qualified.

The intelligent miniature circuit breaker synchronization test method of the present invention detects the closing synchronization index of the circuit breaker, which can ensure that the moving contacts of all poles of the circuit breaker are kept mechanically connected synchronously, and improve the reliability of the circuit breaker in the field. .

In this embodiment, in step S03, when the circuit breaker is qualified, the value of the output terminal of the N line with open and close neutral pole is smaller than the value of each output terminal of the L line; The value of the output terminal, the value of the output terminal of the N line minus the value of each output terminal of the L line is less than the standard closing synchronization time.

In this embodiment, in step S02, the middle part or the two ends of the operating handle of the circuit breaker are manually pushed to close the circuit breaker. By manually pushing the operating handle of the circuit breaker at different parts to close the circuit breaker, the synchronization index test can be carried out, which can ensure the reliability of the circuit breaker when it is closed by different personnel and different usage habits.

In this embodiment, the synchronization test of opening is also included, and the specific steps are:

S11. Connect the output terminals of all poles of the circuit breaker in parallel and connect them to the N line of the power supply, and connect the input terminals to the L line of the power supply respectively;

S12. Manually push the operating handle of the circuit breaker to open the circuit breaker, and record the time of voltage change at each input terminal of the circuit breaker;

S13. The difference between the maximum time value and the minimum time value of the voltage change at each input terminal of the circuit breaker is used as the opening synchronous time. When the closing synchronous time is less than the standard opening synchronous time, it is judged that the circuit breaker is qualified, otherwise it is not qualified.

In this embodiment, in step S13, when the circuit breaker is qualified, the value of the input terminal of the N line with the open and close neutral pole is greater than the value of each input terminal of the L line; The value of the terminal, the value of the input terminal of the N line minus the value of each input terminal of the L line is less than the standard opening synchronization time.

In this embodiment, in step S12, the middle part or the two ends of the operating handle of the circuit breaker are manually pushed to close the circuit breaker. By manually pushing the operating handle of the circuit breaker at different parts to close the circuit breaker, the synchronization index test can be carried out, which can ensure the reliability of the circuit breaker when it is opened by different personnel and different usage habits.

As shown in Figure 2, the present invention also discloses an intelligent miniature circuit breaker synchronization test device, including a power supply unit and a time test unit (such as a power-on time tester), the L pole of the power supply unit is connected to the input end of the circuit breaker, The input terminal of the time test unit is connected with the output terminal of the circuit breaker. By detecting the voltage of the output terminal or the voltage difference between the output terminal and the input terminal to judge whether to switch on or not, and record the time when the voltage changes, the operation is simple and easy to implement.

The above are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims (7)

1. a kind of intelligent micro-circuit breaker synchronism test method, which is characterized in that tested including switching synchronization, specific steps Are as follows:

S01, the input terminal parallel connection of all poles of breaker is shorted and accesses power supply L line；

S02, the operation handle for pushing breaker manually, make breaker closing, and record each output end of breaker obtains the electric time；

S03, each output end of breaker is obtained difference between electric time maximum value and time minimum value as close a floodgate the same period when Between, it closes a floodgate the time same period when the time same period of closing a floodgate is less than standard, then judges breaker qualification, be otherwise unqualified；

It further include the test of separating brake synchronism, specific steps are as follows:

S11, the output end parallel connection of all poles of breaker is shorted to and is accessed power supply N line, input terminal is respectively connected to power supply L line；

S12, the operation handle for pushing breaker manually, make breaker open operation, each input terminal voltage variation of record breaker when Between；

Difference between S13, time maximum value and time minimum value that each input terminal voltage of breaker is changed is same as separating brake Time phase is less than the standard separating brake time same period when the separating brake time same period, then judges breaker qualification, be otherwise unqualified.

2. intelligent micro-circuit breaker synchronism test method according to claim 1, which is characterized in that in step S03, When breaker qualification, the N line output terminal with opening and closing neutral pole electric time value be less than each output end of L line it is electric when Between be worth.

3. intelligent micro-circuit breaker synchronism test method according to claim 1, which is characterized in that in step S03, When breaker qualification, the N line output terminal with protection pole electric time value if it is greater than each output end of L line it is electric when Between be worth, then N line output terminal electric time value subtract each output end of L line electric time value be less than standard close a floodgate the same period when Between.

4. intelligent micro-circuit breaker synchronism test method according to claim 1, which is characterized in that in step S02, The intermediate position of the operation handle of breaker or the position at both ends are pushed manually, make breaker closing.

5. intelligent micro-circuit breaker synchronism test method according to claim 4, which is characterized in that in step S13, when When breaker qualification, the voltage that the time value of the voltage change of the N line input terminal with opening and closing neutral pole is greater than each input terminal of L line becomes The time value of change.

6. intelligent micro-circuit breaker synchronism test method according to claim 4, which is characterized in that in step s 13, When breaker qualification, with protection pole N line input terminal voltage change time value if it is greater than each input terminal of L line voltage The time value of variation, then the time value of the voltage change of N line input terminal subtract the voltage change of each input terminal of L line time value it is small In the standard separating brake time same period.

7. intelligent micro-circuit breaker synchronism test method according to claim 4, which is characterized in that in step s 12, The intermediate position of the operation handle of breaker or the position at both ends are pushed manually, make breaker open operation.