CN207636718U - A kind of circuit-breaker testing repairing auxiliary device - Google Patents

Abstract

The utility model discloses a kind of circuit-breaker testing repairing auxiliary devices, including at least breaker and experimental rig, further include switching device and detection device, switching device includes fast grafting terminal and secondary plug, detection device includes several indicator lights, switching value circuit, jumps position monitoring circuit and characteristic test device, provides a kind of safe and reliable, accuracy rate height and a kind of circuit-breaker testing repairing auxiliary device that can solve contact surface problem of oxidation.

Description

A circuit breaker test maintenance auxiliary device

technical field

The utility model relates to the technical field of power grid maintenance, in particular to a circuit breaker test maintenance auxiliary device.

Background technique

The construction, operation and maintenance of power distribution network is a very important daily business of power companies. With the continuous progress and development of society and the increasing demand of users for the safety, reliability and stability of power grids, a set of fast, efficient, accurate, online detection and Equipment early warning system is very urgent and important. At present, the reliable operation of 10kV circuit breakers in the distribution network and the changes in their performance parameters are mainly judged based on the results of institutional inspections and electrical performance tests during regular maintenance. However, during the maintenance test of the circuit breaker, due to the narrow space of the external lead plug, the test time is long and the reliability of all auxiliary contacts cannot be checked. Disadvantages of the existing method: 1. During the test, because the position of the power pin is too close to the power cord clamp, it is difficult (time-consuming) and unreliable (unsafe); 2. Except for the mechanical characteristic test of the circuit breaker, the remaining auxiliary contacts cannot be tested. Corresponding detection, such as using a multimeter to detect time-consuming and the possibility of error. 3. Because the circuit breaker is in a mechanical static state for a long time, the contact surface of each auxiliary switch will be oxidized if it does not move for a long time, so the operating status of the circuit breaker will not be detected by the background, and the problem of contact surface oxidation cannot be effectively dealt with.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems that the power supply pin is too close to the power cord clamp to connect difficult and unreliable, the multimeter detection is time-consuming and there is a possibility of error, and the problem that the oxidation of the contact surface cannot be effectively handled in the current test provides a safe The utility model relates to a circuit breaker test and maintenance auxiliary device which is reliable, high in accuracy and can solve the oxidation problem of the contact surface.

The technical solution adopted by the utility model to solve the technical problem is: a circuit breaker test and maintenance auxiliary device, which at least includes a circuit breaker, a test device and a power supply, and also includes:

Adapter device, the adapter device includes a quick-insert terminal and a secondary plug, one end of the adapter device is electrically connected to the test device through the quick-insert terminal, and the other end of the adapter device is electrically connected to the detection device;

A detection device, the input end of the detection device is electrically connected to the circuit breaker through a secondary plug, and the output end of the detection device is electrically connected to the input end of the adapter device through a quick-plug terminal;

The detection device includes a number of indicator lights, switching value circuits, jump monitoring circuits and characteristic testing devices. Electrically connected, the output end of the jump position monitoring circuit is electrically connected to the indicator light, and the characteristic test device is electrically connected to the power supply through a quick-plug terminal.

As a preference, the switching device also includes a number of auxiliary contacts. By studying the drawings of all operating substation switches of the same manufacturer, the common greatest common divisor (the maximum number of auxiliary contact outputs) is found. The circuit breaker selected by the utility model is Mitsubishi breakers.

Preferably, the switching device includes a 42-core test cable or a 72-core test cable.

As a preference, the utility model includes a circuit breaker test maintenance method, comprising the following steps:

Step 1: Understand the basic conditions of all circuit breakers in operating substations before the test: how many times they are turned on and how many times they are closed, how many pairs of energy storage, and whether there is a jump monitoring, and calculate the common greatest common divisor (the maximum number of auxiliary contact outputs);

Step 2: Select a 42-core test cable or a 72-core test cable according to the basic condition of the circuit breaker;

Step 3: The circuit breaker is electrically connected to the test device through the transfer device and the detection device;

Step 4: The characteristic tester is electrically connected to the power supply through the quick-plug terminal;

Step 5: Start the mechanical characteristic test, and judge the integrity of the circuit by the light on or off;

Step 6: Pull out the secondary plug connected to the circuit breaker, and insert the secondary plug into another circuit breaker to be tested. Repeat step 1 until all circuit breakers are overhauled.

As a preference, soft mud is attached to the surface of the secondary plug, and the soft mud can make the utility model overcome the problem of uneven interface surface during the wiring process.

Preferably, the secondary plug is a derivative plug-in socket, and the derivative plug-in socket can support different types of interfaces.

The beneficial effects of the utility model are:

(1) The scope of application is wide, and different circuit breakers can be tested only by replacing the secondary plug connected with the circuit breaker with the plug of the same type as the circuit breaker under test;

(2) Safe, reliable, convenient and quick;

(3) The line uses quick-plug terminals, which is not easy to loosen

(4) The test result is displayed by the indicator light, which is clear at a glance.

Description of drawings

Fig. 1 is a schematic diagram of equipment connection of a circuit breaker test and maintenance auxiliary device;

In the figure: 1. Circuit breaker, 2. Secondary plug, 3. Adapter device, 4. Detection device, 5. Quick plug terminal, 6. Test device.

Detailed ways

As shown in Figure 1, a circuit breaker 1 test and maintenance auxiliary device includes a circuit breaker 1 and a test device 6, and also includes:

An adapter device 3, the adapter device 3 includes a quick-plug terminal 5 and a secondary plug 2, one end of the adapter device 3 is electrically connected to the test device 6 through the quick-insert terminal 5, and the other end of the adapter device 3 is connected to the detection device 4 electrical connections;

The detection device 4, the input end of the detection device 4 is electrically connected to the circuit breaker 1 through the secondary plug 2, and the output end of the detection device 4 is electrically connected to the input end of the adapter device 3 through the quick-plug terminal 5;

The detection device 4 includes several indicator lights, switching value circuits, jump monitoring circuits and characteristic testing devices. The input end of the switching value circuit is electrically connected to the circuit breaker 1 through the secondary plug 2, and the output end of the switching value circuit is connected to the jump monitoring circuit. The input end of the circuit is electrically connected, the output end of the jump position monitoring circuit is electrically connected to the indicator light, and the characteristic testing device is electrically connected to the power supply through the quick-plug terminal 5.

The utility model comprises a circuit breaker test maintenance method, comprising the following steps:

Step 1: Understand the basic conditions of circuit breakers 1 in all operating substations before the test: how many times they are turned on and how many times they are closed, how many pairs of energy storage, and whether there is a jump monitoring, and calculate the common greatest common denominator (the maximum number of auxiliary contact outputs);

Step 2: Select 42-core test cable or 72-core test cable according to the basic condition of circuit breaker 1;

Step 3: The circuit breaker 1 is electrically connected to the test device 6 through the adapter device 3 and the detection device 4;

Step 4: The characteristic tester is electrically connected to the power supply through the quick-plug terminal 5;

Step 5: Start the mechanical characteristic test, and judge the integrity of the circuit by the light on or off;

Step 6: Pull out the secondary plug 2 connected to the circuit breaker 1, and insert the secondary plug 2 into another circuit breaker 1 to be tested, and repeat step 1 until all circuit breakers 1 are overhauled.

The implementation example described above is only a preferred solution of the utility model, and does not limit the utility model in any form. There are other variations and modifications under the premise of not exceeding the technical solution described in the claims.

Claims (5)

1. A circuit breaker test maintenance auxiliary device, comprising at least a circuit breaker, a test device and a power supply, characterized in that it also includes: Adapter device, the adapter device includes a quick-insert terminal and a secondary plug, one end of the adapter device is electrically connected to the test device through the quick-insert terminal, and the other end of the adapter device is electrically connected to the detection device; A detection device, the input end of the detection device is electrically connected to the circuit breaker through a secondary plug, and the output end of the detection device is electrically connected to the input end of the adapter device through a quick-plug terminal; The detection device includes a number of indicator lights, switching value circuits, jump monitoring circuits and characteristic testing devices. Electrically connected, the output end of the jump position monitoring circuit is electrically connected to the indicator light, and the characteristic test device is electrically connected to the power supply through a quick-plug terminal. 2. An auxiliary device for testing and maintenance of a circuit breaker according to claim 1, wherein the switching device further includes several auxiliary contacts. 3. A circuit breaker test and maintenance auxiliary device according to claim 1, characterized in that said switching device comprises a 42-core test cable or a 72-core test cable. 4. The circuit breaker test and maintenance auxiliary device according to claim 1, wherein the surface of the secondary plug is covered with ooze. 5. The auxiliary device for test and maintenance of a circuit breaker according to claim 1, wherein the secondary plug is a derivative plug-in socket.