CN211955658U - High, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement - Google Patents

High, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement Download PDF

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Publication number
CN211955658U
CN211955658U CN202020559604.0U CN202020559604U CN211955658U CN 211955658 U CN211955658 U CN 211955658U CN 202020559604 U CN202020559604 U CN 202020559604U CN 211955658 U CN211955658 U CN 211955658U
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CN
China
Prior art keywords
circuit breaker
direct current
auxiliary contact
current resistance
voltage circuit
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Application number
CN202020559604.0U
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Chinese (zh)
Inventor
于浩
高翔燕
仲计戈
张雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zouxian Power Plant Of Huadian Power International Corp ltd
Huadian Zouxian Power Generation Co ltd
Original Assignee
Zouxian Power Plant Of Huadian Power International Corp ltd
Huadian Zouxian Power Generation Co ltd
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Priority to CN202020559604.0U priority Critical patent/CN211955658U/en
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Abstract

The utility model discloses a high, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement, including DC power supply, singlechip, relay, single-phase direct current metering module, communication module, LCD display screen, print module and circuit breaker secondary plug, the COM end of relay with singlechip output interface connection; the method comprises the following steps: step 1: the single chip microcomputer sequentially sends control signals to each connected relay according to the algorithm instructions to control the measurement loop in the step 2 to be connected; step 2: the single-phase metering module can sequentially measure the direct current resistance value of each pair of auxiliary contacts; and step 3: the communication module transmits the measured value to the singlechip for storage; and 4, step 4: displayed by the LCD display screen and printed by the printing module. The utility model discloses can remove the manual work from when can being applied to high, low voltage circuit breaker auxiliary contact direct current resistance measurement and pursue the trouble to the measurement, measurement error and record error can not appear to can select the unqualified auxiliary contact of data, improve work efficiency greatly.

Description

High, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement
Technical Field
The utility model relates to a resistance test technical field especially relates to a high, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement.
Background
The high-voltage circuit breaker and the low-voltage circuit breaker are common power equipment, and the high-voltage circuit breaker and the low-voltage circuit breaker need to be subjected to direct current resistance test of an auxiliary contact when being overhauled to check whether the mechanical properties of the high-voltage circuit breaker and the low-voltage circuit breaker are good or not.
However, in the prior art, the direct resistance measurement work needs to be performed by a staff to manually search for corresponding contacts one by one and then use the universal meter to perform measurement, the process is complicated, errors are easy to occur, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
The utility model aims at solving among the prior art direct resistance measurement work and need be measured the universal meter by the staff manual gradual corresponding contact reuse of seeking, the loaded down with trivial details and easy wrong problem of appearing of process, and the supplementary contact direct current resistance testing arrangement of a high, low voltage circuit breaker who proposes.
2. Technical scheme
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a high, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement, includes DC power supply, singlechip, relay, single-phase direct current metering module, communication module, LCD display screen, print module and circuit breaker secondary plug, circuit breaker secondary plug and the circuit breaker auxiliary contact plug connection who measures, the COM end of relay with singlechip output interface connection.
Preferably, the single chip microcomputer sends an instruction to control each detection module to complete the measurement of the direct current resistance value of the auxiliary contact of the circuit breaker.
Preferably, the breaker secondary plug can be replaced with the model of the detected breaker.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses in, can remove the artifical trouble of measuring one by one when can be applied to high, low voltage circuit breaker auxiliary contact direct current resistance measurement, can not appear measuring error and record mistake to can select the unqualified auxiliary contact of data, improve work efficiency greatly;
2. the direct current resistance testing method comprises the following steps: step 1: the single chip microcomputer sequentially sends control signals to each connected relay according to the algorithm instructions; step 2: the single-phase metering module can sequentially measure the direct current resistance value of each pair of auxiliary contacts; and step 3: the communication module transmits the measured value to the singlechip for storage; and 4, step 4: the single-phase direct current metering module, a relay, a breaker secondary plug and an auxiliary contact corresponding to the breaker to be tested form a measuring loop in the step 2, the single-phase direct current metering module can calculate the resistance value of the auxiliary contact corresponding to the breaker to be tested by detecting the loop current in the step 2, and the single-chip microcomputer can control the printing module to print data according to an algorithm instruction in the step 4.
Drawings
Fig. 1 is a schematic structural view of a device for testing the direct current resistance of an auxiliary contact of a high-voltage circuit breaker and a low-voltage circuit breaker according to the present invention;
fig. 2 is a circuit diagram of a measurement circuit of the single-phase dc metering module 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 embodiments of the present invention, not all embodiments.
Example 1:
referring to fig. 1-2, a high and low voltage circuit breaker auxiliary contact direct current resistance testing device comprises a direct current power supply, a single chip microcomputer, a relay, a single-phase direct current metering module, a communication module, an LCD display screen, a printing module and a circuit breaker secondary plug;
in the embodiment, a secondary plug of the circuit breaker is connected with a measured plug of an auxiliary contact of the circuit breaker, a COM end of a relay is connected with an output interface of a single chip microcomputer, and the single chip microcomputer sends out an instruction to control each detection module to complete measurement of a direct current resistance value of the auxiliary contact of the circuit breaker;
in the embodiment, the output end of the device plug is connected with the input end of the relay and used for leading test electrical measuring current into the relay, wherein a secondary plug of the breaker can be replaced along with the model of the breaker to be detected, and the input end of the single-phase direct current measuring module is connected with the output end of the relay and used for detecting the current in the relay;
in this embodiment, the output of single-phase direct current metering module is connected with communication module's input for with detected signal transmission to communication module, communication module's output is connected with the input of singlechip, is used for sending communication data to the singlechip, the output of singlechip is equipped with LCD.
In this embodiment, a method for testing direct current resistance of an auxiliary contact of a high-voltage circuit breaker and a low-voltage circuit breaker includes the following steps:
step 1: the single chip microcomputer sequentially sends control signals to each connected relay according to the algorithm instructions;
step 2: the single-phase metering module can sequentially measure the direct current resistance value of each pair of auxiliary contacts, wherein the single-phase direct current metering module, the relay, the secondary plug of the circuit breaker and the auxiliary contacts corresponding to the tested circuit breaker form a measuring loop, and the single-phase direct current metering module can calculate the resistance value of the auxiliary contacts corresponding to the tested circuit breaker by detecting the loop current;
and step 3: : the communication module transmits the measured value to the singlechip for storage;
and 4, step 4: the singlechip controls the printing module to print the data according to the algorithm instruction, and the data is displayed by the LCD screen.
The invention can be applied to the direct current resistance measurement of the auxiliary contacts of the high-voltage and low-voltage circuit breakers, can avoid the trouble of manual pair-by-pair measurement, can not generate measurement errors and recording errors, can screen out the auxiliary contacts with unqualified data, and greatly improves the working efficiency.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (3)

1. The device for testing the direct-current resistance of the auxiliary contact of the high-voltage circuit breaker and the low-voltage circuit breaker comprises a direct-current power supply, a single-chip microcomputer, a relay, a single-phase direct-current metering module, a communication module, an LCD (liquid crystal display) screen, a printing module and a secondary plug of the circuit breaker, and is characterized in that the secondary plug of the circuit breaker is connected with the measured plug of the auxiliary contact of the circuit breaker, and the COM end of the relay is connected with an output interface of the single.
2. The device for testing the direct current resistance of the auxiliary contact of the high-voltage and low-voltage circuit breaker according to claim 1, wherein the single chip microcomputer sends out an instruction to control each detection module to complete measurement of the direct current resistance value of the auxiliary contact of the circuit breaker.
3. The apparatus for testing the direct current resistance of the auxiliary contact of the high-and-low voltage circuit breaker as claimed in claim 1, wherein the secondary plug of the circuit breaker can be replaced with the model of the circuit breaker to be tested.
CN202020559604.0U 2020-04-02 2020-04-02 High, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement Active CN211955658U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020559604.0U CN211955658U (en) 2020-04-02 2020-04-02 High, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020559604.0U CN211955658U (en) 2020-04-02 2020-04-02 High, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement

Publications (1)

Publication Number Publication Date
CN211955658U true CN211955658U (en) 2020-11-17

Family

ID=73165389

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020559604.0U Active CN211955658U (en) 2020-04-02 2020-04-02 High, low voltage circuit breaker auxiliary contact direct current resistance testing arrangement

Country Status (1)

Country Link
CN (1) CN211955658U (en)

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