CN210982617U - Switch drawer test circuit and test equipment - Google Patents

Abstract

A switch drawer test circuit comprises a voltage transformation assembly, a voltage output assembly, a switching-on/off simulation unit and a test assembly; the voltage transformation assembly is used for accessing alternating current to output a plurality of paths of direct current voltages for testing the switch drawer; the voltage output assembly is connected with the voltage transformation assembly and is used for indicating, displaying and supplying multi-path direct current voltage; the testing component is connected with the voltage transformation component and is used for connecting the switch drawer to be tested and indicating the fault state of the switch drawer to be tested; the switching-on/off simulation unit is connected with the voltage transformation assembly and the test assembly; the device is used for simulating a closing operation instruction and an opening operation instruction of the switch drawer to be tested so as to perform offline testing. The complicated test flow of opening and closing the drawer is simplified, the manpower and material resources required by the test are saved, and the test efficiency is improved.

Description

Switch drawer test circuit and test equipment

Technical Field

The utility model belongs to the technical field of the computer, especially, relate to a switch drawer test circuit and test equipment.

Background

In the nuclear power overhaul process, the overhaul workload of the distribution boards is very much, each distribution board comprises a plurality of switch drawers, and the switch drawers are required to be tested to determine whether faults exist.

At present, the traditional switch drawer test is divided into the following two cases:

in the first case, during routine maintenance, a functional test is performed after maintenance on one switch drawer to check whether the maintenance is in place. Under the working condition, the whole distribution board is in a normal operation state, each switch drawer is related to the normal operation of a downstream load, any operation of the switch drawers in the distribution board can influence other loads at the downstream, if a small error exists in the test process of the switch drawers, the direct-current power supply is more likely to be in short circuit or grounded, so that adverse effects and even threats are brought to the whole direct-current system, more distribution boards are threatened, and the series of chain reactions generated by the short-circuit power supply can seriously influence the operation of a nuclear power station and even endanger the nuclear safety.

In daily maintenance, in order to avoid the influence of the test of one switch drawer on the whole system, when the switch drawer is tested, the switch drawer to be tested is firstly disconnected from a switchboard, a single-phase relay protection tester is singly used for supplying required direct current control power to the switch drawer, and if the switch drawer is a contact type switch drawer, another single-phase relay protection tester is required for supplying another direct current power. The single-phase relay protection tester is originally equipment for relay protection, is not special equipment for testing a switch drawer, only provides a direct-current power supply for the switch drawer to be tested by the equipment, needs a first person to monitor the operation condition of the power supply when the switch drawer is tested after the power supply exists, sends an operation step instruction according to a working file by a second person, and tests the corresponding state of each corresponding port of the switch drawer by a third person by using a universal meter. The switch drawer test needs to use a large amount of resources, one single-phase relay tester needs to be lifted to the site by two persons, the two single-phase relay testers are generally transported to the site by a trolley, then a power supply output by the single-phase sequential electrical tester is connected with the switch drawer to be tested by a test cable according to the existing drawing, the minimum pins to be connected with the switch drawer to be tested are twenty pins, the definition of each pin is different, if one pin is in wrong wiring in the whole process, the switch drawer is possibly unavailable, the function of downstream equipment in the system is influenced, and the overhaul period is also influenced.

In the second case, during the overhaul of the shutdown group, it is necessary to test all the switch drawers of the entire switchboard. In this case, the entire switchboard is stopped, the switch drawers to be tested are disconnected from the switchboard, and then the test is performed one by one according to the routine maintenance method. The most outstanding problem of testing the switch drawer during overhaul is that the workload is large, the construction period is tight, the task is heavy, and a small error can influence the overhaul quality of the whole switchboard, even the overhaul construction period and the unit state.

Therefore, the problems of more resource occupation and low test efficiency of the test of the switch drawer in the nuclear power overhaul process exist in the traditional technical scheme.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a switch drawer test circuit and test equipment aims at solving the problem that the nuclear power that exists among the traditional technical scheme overhauls the test of in-process switch drawer and occupies that the resource is many and efficiency of software testing is low.

In a first aspect, an embodiment of the present disclosure provides a switch drawer test circuit, which includes a voltage transformation component, a voltage output component, a switching-on/off analog unit, and a test component; the voltage transformation assembly is used for accessing alternating current to output a plurality of paths of direct current voltages for testing the switch drawer; the voltage output assembly is connected with the voltage transformation assembly and is used for indicating, displaying and supplying multi-path direct current voltage; the testing component is connected with the voltage transformation component and is used for connecting the switch drawer to be tested and indicating the state of the switch drawer to be tested; and the switching-on and switching-off simulation unit is connected with the voltage transformation assembly and the testing assembly and is used for simulating the switching-on operation instruction and the switching-off operation instruction of the switch drawer to be tested so as to perform off-line testing on the switch drawer to be tested. The special test circuit for the switch drawer is provided, the complicated test flow of the switch drawer is simplified, the manpower and material resources required by the test are saved, and the test efficiency is improved.

With reference to the first aspect, in a first implementation manner of the first aspect, the voltage transformation assembly includes a fuse, a power switch, a power conversion module, a first resistor for limiting current, and a power indicator; the live wire of the alternating current is connected with the first end of the fuse protector; the second end of the fuse is connected with the first input end of the power switch; the zero line of the alternating current is connected with the second input end of the power switch; the output end of the power switch is connected with the input end of the power conversion module; the output end of the power supply conversion module comprises a first direct current loop output end, a second direct current loop output end, a third direct current loop output end and a fourth direct current loop output end; the positive electrode of the output end of the fourth direct current loop is connected with the first end of the first resistor; the second end of the first resistor is connected with the anode of the power indicator lamp; and the negative electrode of the power indicator lamp is connected with the negative electrode of the output end of the fourth direct current loop. Four direct current power supplies required by the switch drawer test are provided.

With reference to the first implementation manner of the first aspect, in a second implementation manner of the first aspect, the voltage output component includes an output switch, a relay, a backward absorption diode, a first voltmeter, a second voltmeter, a third voltmeter, a first dc socket, a second dc socket, a third dc socket, a first dc indication loop, a second dc indication loop, and a third dc indication loop; the positive electrode of the output end of the second direct current loop is connected with the first end of the output switch; the second end of the output switch is connected with the negative electrode of the reverse absorption diode and the first end of the relay; the negative electrode of the output end of the second direct current loop is connected with the positive electrode of the reverse absorption diode and the second end of the relay; the output end of the first direct current loop is connected with the first direct current jack through a first group of normally open contacts of the relay; the first direct current socket is connected with the input end of the first direct current indicating loop; the first voltmeter is connected in parallel between two poles of the first direct current socket; the output end of the second direct current loop is connected with a second direct current socket through a second group of normally open contacts of the relay; the second direct current socket is connected with the input end of the second direct current indicating loop; the first voltmeter is connected in parallel between two poles of the second direct current socket; the output end of the third direct current loop is connected with a third direct current socket through a third group of normally open contacts of the relay; the third direct current jack is connected with the input end of the third direct current indicating loop; the first voltmeter is connected in parallel between two poles of the third direct current jack. The three direct current voltages used for testing the switch drawer are monitored, whether the three direct current voltages are normal or not is indicated, relevant voltage values are displayed, and meanwhile the three direct current voltages can be used by external electric equipment.

With reference to the first implementation manner of the first aspect, in a third implementation manner of the first aspect, the switching-on/off simulation unit includes a switching-on button, a switching-on indication circuit, a switching-off indication circuit, and a switching-off button provided with two sets of linkage normally-open contacts; the positive electrode of the output end of the second direct current loop is connected with the first end of the closing button and the first end of the first group of normally open contacts of the opening button; the second end of the closing button is connected with the input end of the closing indicating loop; the second ends of the first group of normally open contacts of the opening button are connected with the input end of the opening indicating loop; and the negative electrode of the output end of the second direct current loop is connected with the output end of the closing indication loop and the output end of the opening indication loop. The normal switching-off and switching-on operations of the switch drawer can be simulated, the switch drawer does not need to be disconnected, the test operation can be carried out during the working period of the switch drawer, and the normal operation of other parts cannot be influenced.

With reference to the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the testing component includes a first diode, a second diode, a third diode, a fourth diode, a switching-on state indicating loop, a switching-off state indicating loop, a fault state indicating loop, an unavailable state indicating loop, a standby state indicating loop, a testing female plug, and a connecting male plug matched with the testing female plug; the anode of the output end of the fourth direct current loop is connected with the anode of the first diode, the anode of the second diode, the anode of the third diode and the anode of the fourth diode; the negative electrode of the output end of the fourth direct current loop is connected with the output end of the switching-on state indicating loop, the output end of the switching-off state indicating loop, the output end of the fault state indicating loop, the output end of the unavailable state indicating loop and the output end of the standby state indicating loop; the pin side of the test female plug is connected with the voltage transformation assembly, the switching-on/off simulation unit and the test assembly; the slot side of the test female plug is connected with the plug side of the connection male plug; the pin side of the connecting male plug is used for connecting the switch drawers to be tested with different function types. The circuit is connected with the switch drawer to be tested in a wiring mode through the plug-in unit, the complex process of drawing wiring is omitted, and the plug-in is more efficient and accurate; the indicating loop is used for directly indicating whether the drawer of the switch to be tested has a fault and which aspect has the fault, and the method is very visual.

With reference to the fourth embodiment of the first aspect, in a fifth embodiment of the first aspect, when the switch drawer to be tested is a circuit breaker type switch drawer, the first connection mode is adopted for connecting the pin side of the male plug and the switch drawer to be tested. The pin side of the male plug and the switch drawer to be tested are connected in different connection modes, so that the switch drawers to be tested with different functional types can be met.

With reference to the fourth embodiment of the first aspect, in a sixth embodiment of the first aspect, when the switch drawer to be tested is a contact-type switch drawer, a second connection mode is adopted for connecting the pin side of the male plug and the switch drawer to be tested. The pin side of the male plug and the switch drawer to be tested are connected in different connection modes, so that the switch drawers to be tested with different functional types can be met.

With reference to the fourth embodiment of the first aspect, in a seventh embodiment of the first aspect, when the switch drawer to be tested is a reversible contact type switch drawer, a third connection mode is adopted for connecting the pin side of the male plug and the switch drawer to be tested. The pin side of the male plug and the switch drawer to be tested are connected in different connection modes, so that the switch drawers to be tested with different functional types can be met.

In a second aspect, an embodiment of the present disclosure provides a switch drawer testing device, which includes a box body and an ac power input socket disposed on the box body, and the switch drawer testing device includes the switch drawer testing circuit of the first aspect or any one of the first to seventh implementation manners of the first aspect. The test equipment is convenient to carry and more convenient to use.

With reference to the second aspect, in a first embodiment of the second aspect, one side surface of the case is provided as an operation panel; the operation panel is provided with a status indicator light, operation keys and various interfaces. The drawer testing device provides more convenient conditions for the testing work of the drawer operated by a single person, and the centralized placement of the components is convenient for observation and operation.

The switch drawer testing circuit and the testing equipment are used for providing a working power supply for the voltage output assembly, the switching-on/off simulation unit and the testing assembly through the voltage transformation assembly, whether the working state of the power supply for testing can meet requirements can be monitored in real time through the voltage output assembly, various direct-current power supplies can also be provided for external equipment, off-line testing can be achieved through real switching-on/off and switching-on operations of the switching-on/off simulation unit for simulating the switch drawer, accurate and quick connection with the switch drawer to be tested can be achieved through the testing assembly, testing work of the switch drawer can be achieved by one person, the problems that wiring is complicated and mistakes are easily made during testing at every time are avoided, manpower and material resources are saved, and testing efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a switch drawer test circuit according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of an exemplary circuit of a voltage transforming component, a voltage outputting component and a switching-on/off analog unit in the switch drawer testing circuit shown in FIG. 1;

FIG. 3 is an exemplary circuit schematic of a voltage block and a test block in the switch drawer test circuit shown in FIG. 1;

FIG. 4 is a schematic diagram of a female test socket in the test assembly of the switch drawer test circuit shown in FIG. 3;

FIG. 5 is a schematic diagram of a male plug connected to a testing assembly of the switch drawer testing circuit shown in FIG. 3;

FIG. 6 is a schematic diagram of a male plug connected to a testing assembly of the switch drawer testing circuit shown in FIG. 3;

FIG. 7 is a schematic diagram of a male plug connected to a testing assembly of the switch drawer testing circuit shown in FIG. 3;

fig. 8 is a schematic structural diagram of a switch drawer testing apparatus according to an embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 shows a schematic structural diagram of a switch drawer test circuit according to an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment are shown, which are detailed as follows:

a switch drawer test circuit comprises a voltage transformation component 100, a voltage output component 200, a switching-on/off analog unit 300 and a test component 400; the voltage transformation assembly 100 is used for accessing alternating current to output a plurality of paths of direct current voltages for testing the drawer of the switch F0; the voltage output assembly 200 is connected with the voltage transformation assembly 100 and is used for indicating, displaying and supplying multi-path direct current voltage; the testing assembly 400 is connected with the voltage transformation assembly 100 and is used for connecting the switch drawer to be tested and indicating the state of the switch drawer to be tested; and the switching-on and switching-off simulation unit 300 is connected with the voltage transformation assembly 100 and the testing assembly 400 and is used for simulating a switching-on operation instruction and a switching-off operation instruction of the switch drawer to be tested so as to perform offline testing on the switch drawer to be tested.

Specifically, the voltage transformation assembly 100 transforms an accessed alternating current 220V power supply into four different direct current voltage sources, and provides working power supplies for the voltage output assembly 200, the opening and closing simulation unit 300 and the test assembly 400; the voltage output assembly 200 provides a working indicator light and voltage value monitoring for three direct current voltage sources, can observe whether the output of a working power supply is normal or not in real time when the switch drawer is tested, and can provide convenience for external equipment to use the three direct current voltage sources; the switching-on/off simulation unit 300 can simulate switching-off and switching-on operation instructions of the switch drawer, so that the normal work of the switch drawer is prevented from being interfered during test work, and sufficient conditions are provided for offline test of the switch drawer; the testing assembly 400 is connected with the switch drawer to be tested, relevant testing work of the switch drawer is carried out through the opening and closing simulation unit 300, and the testing assembly 400 can indicate the fault state of the switch drawer to be tested in real time, so that the testing assembly is convenient and visual; the parts jointly form a switch drawer test circuit, so that the test process is simplified, and the manpower and material resources required during the test are saved, so that the test work can be completed by a single person, and the test efficiency is greatly improved.

As shown in fig. 2 and 3, in one embodiment, the transforming assembly 100 includes a fuse FU, a power switch F, a power conversion module D, a first resistor R1 for limiting current, and a power indicator D1; the live wire of the alternating current is connected with the first end of the fuse FU; the second end of the fuse FU is connected with the first input end of the power switch F; the zero line of the alternating current is connected with the second input end of the power switch F; the output end of the power switch F is connected with the input end of the power conversion module D; the output end of the power supply conversion module D comprises a first direct current loop output end, a second direct current loop output end, a third direct current loop output end and a fourth direct current loop output end; the positive electrode of the output end of the fourth direct current loop is connected with the first end of the first resistor R1; the second end of the first resistor R1 is connected with the anode of the power indicator lamp D1; and the negative electrode of the power indicator lamp D1 is connected with the negative electrode of the output end of the fourth direct current loop. Four direct current power supplies required by the switch drawer test are provided.

Specifically, the power conversion module D is configured to convert 220V ac power into four dc outputs, where the first dc loop outputs a dc110V voltage source, the second dc loop outputs a dc48V voltage source, the third dc loop outputs a dc 24V voltage source, and the first dc loop outputs a dc 5V voltage source. The power supply conversion module D can be a high-frequency switch power supply module, and can also be a power supply formed by a power frequency transformer, a rectifier bridge and a filter capacitor.

As shown in fig. 2, in one embodiment, the voltage output assembly 200 includes an output switch F0, a relay K, a reverse absorption diode D16, a first voltmeter V1, a second voltmeter V2, a third voltmeter V3, a first dc outlet E1, a second dc outlet E2, a third dc outlet E3, a first dc indication loop, a second dc indication loop, and a third dc indication loop; the positive electrode of the output end of the second direct current loop is connected with the first end of the output switch F0; the second end of the output switch F0 is connected with the negative electrode of the backward absorption diode D16 and the first end of the relay K; the cathode of the output end of the second direct current loop is connected with the anode of the reverse absorption diode D16 and the second end of the relay K; the output end of the first direct current loop is connected with a first direct current socket E1 through a first group of normally open contacts of a relay K; the first direct current socket E1 is connected with the input end of the first direct current indicating loop; a first voltmeter V1 is connected in parallel between two poles of the first direct current socket E1; the output end of the second direct current loop is connected with a second direct current socket E2 through a second group of normally open contacts of the relay K; the second direct current socket E2 is connected with the input end of the second direct current indicating loop; the first voltmeter V1 is connected in parallel between two poles of the second direct current socket E2; the output end of the third direct current loop is connected with a third direct current socket E3 through a third group of normally open contacts of the relay K; the third direct current socket E3 is connected with the input end of a third direct current indicating loop; the first voltmeter V1 is connected in parallel between the two poles of the third dc outlet E3. The three direct current voltages used for testing the switch drawer are monitored, whether the three direct current voltages are normal or not is indicated, relevant voltage values are displayed, and meanwhile the three direct current voltages can be used by external electric equipment.

Specifically, the output switch F0 is a self-locking switch, which controls the attraction of the coil of the relay K, so as to control the working state of the voltage output assembly 200 through the normally open contact of the relay K; the first dc jack E1, the second dc jack E2, and the third dc jack E3 are used for providing a dc output interface to the outside, so as to facilitate external connection.

As shown in FIG. 2, in one embodiment, the first DC indicating loop includes a ninth resistor R9 and a ninth LED D9; the positive electrode of the first direct current socket E1 is connected with the first end of the ninth resistor R9; a second end of the ninth resistor R9 is connected to the anode of the ninth led D9; the negative electrode of the ninth light emitting diode D9 is connected to the negative electrode of the first dc jack E1.

As shown in FIG. 2, in one embodiment, the second DC indicating loop comprises a tenth resistor R10 and a tenth LED D10; the positive electrode of the second direct current socket E2 is connected with the first end of the tenth resistor R10; a second end of the tenth resistor R10 is connected to the anode of the tenth led D10; the cathode of the tenth light emitting diode D10 is connected to the cathode of the second dc jack E2.

As shown in FIG. 2, in one embodiment, the third DC indicating circuit includes an eleventh resistor R11 and an eleventh LED D11; the positive electrode of the third direct current socket E3 is connected with the first end of the eleventh resistor R11; a second end of the eleventh resistor R11 is connected to the anode of the eleventh led D11; the negative electrode of the eleventh light emitting diode D11 is connected to the negative electrode of the third dc jack E3.

As shown in fig. 2, in one embodiment, the switching-on/off simulation unit 300 includes a switching-on button F1, a switching-on indication circuit, a switching-off indication circuit, and a switching-off button F2 provided with two sets of linked normally open contacts; the positive electrode of the output end of the second direct current loop is connected with the first end of the closing button F1 and the first end of the first group of normally open contacts of the opening button F2; the second end of the closing button F1 is connected with the input end of the closing indicating loop; the second ends of the first group of normally open contacts of the opening button F2 are connected with the input end of the opening indication loop; and the negative electrode of the output end of the second direct current loop is connected with the output end of the closing indication loop and the output end of the opening indication loop. The normal switching-off and switching-on operations of the switch drawer can be simulated, the switch drawer does not need to be disconnected, the test operation can be carried out during the working period of the switch drawer, and the normal operation of other parts cannot be influenced.

As shown in fig. 2, in one embodiment, the closing indication circuit includes a second resistor R2 and a second light emitting diode D2; the second end of the closing button F1 is connected with the first end of a second resistor R2; a second end of the second resistor R2 is connected with the anode of the second light-emitting diode D2; the cathode of the second light-emitting diode D2 is connected with the cathode of the output end of the second direct current loop; the second light emitting diode D2 is used as an analog closing indicator lamp.

As shown in fig. 2, in one embodiment, the open indicating loop comprises a third resistor R3 and a third led D3; the first end of the first group of normally open contacts of the opening button F2 is connected with the first end of the third resistor R3; a second end of the third resistor R3 is connected with the anode of the third LED D3; the cathode of the third light-emitting diode D3 is connected with the cathode of the output end of the second direct current loop; the third light-emitting diode D3 is used as an analog brake-separating indicator light.

As shown in fig. 3, in one embodiment, the testing assembly 400 includes a first diode D12, a second diode D13, a third diode D14, a fourth diode D15, a closing state indicating circuit, an opening state indicating circuit, a fault state indicating circuit, an unavailable state indicating circuit, a standby state indicating circuit, a testing female plug a1, and a connecting male plug a2 matching with the testing female plug a 1; the anode of the output end of the fourth direct current loop is connected with the anode of the first diode D12, the anode of the second diode D13, the anode of the third diode D14 and the anode of the fourth diode D15; the negative electrode of the output end of the fourth direct current loop is connected with the output end of the switching-on state indicating loop, the output end of the switching-off state indicating loop, the output end of the fault state indicating loop, the output end of the unavailable state indicating loop and the output end of the standby state indicating loop; the pin side of the test female plug A1 is connected with the voltage transformation component 100, the switching simulation unit 300 and the test component 400; the socket side of the test female plug A1 is connected with the plug side of the connecting male plug A2; the pin side of the connecting male plug A2 is used for connecting switch drawers to be tested of different function types.

As shown in fig. 3, in one embodiment, the closing state indicating circuit includes a fourth resistor R4 and a fourth light emitting diode D4; a fifth pin of the test mother plug A1 is connected with a second end of the fourth resistor R4; a first end of the fourth resistor R4 is connected with the anode of the fourth light-emitting diode D4; the cathode of the fourth light-emitting diode D4 is connected with the cathode of the output end of the fourth direct current loop; the fourth light emitting diode D4 is used as a closing status indicator lamp.

As shown in fig. 3, in one embodiment, the open status indication circuit includes a fifth resistor R5 and a fifth led D5; a sixth pin of the test mother plug A1 is connected with a second end of the fifth resistor R5; a first end of the fifth resistor R5 is connected with the anode of the fifth light-emitting diode D5; the negative electrode of the fifth light-emitting diode D5 is connected with the negative electrode of the output end of the fourth direct current loop; the fifth light emitting diode D5 is used as a switching off status indicator light.

As shown in FIG. 3, in one embodiment, the fault status indication circuit includes a sixth resistor R6 and a sixth light emitting diode D6; a seventh pin of the test mother plug A1 is connected with a second end of the sixth resistor R6; a first end of the sixth resistor R6 is connected to the anode of the sixth light emitting diode D6; the cathode of the sixth light-emitting diode D6 is connected with the cathode of the output end of the fourth direct current loop; the sixth light emitting diode D6 serves as a fault status indicator lamp.

As shown in FIG. 3, in one embodiment, the unavailable status indication loop comprises a seventh resistor R7 and a seventh light emitting diode D7; a fourteenth pin of the test mother pin A1 is connected with a second end of the seventh resistor R7; a first end of the seventh resistor R7 is connected with the anode of the seventh light emitting diode D7; the negative electrode of the seventh light-emitting diode D7 is connected with the negative electrode of the output end of the fourth direct current loop; the seventh light emitting diode D7 functions as an unavailable status indicator lamp.

As shown in FIG. 3, in one embodiment, the standby status indication loop includes an eighth resistor R8 and an eighth LED D8; a sixteenth pin of the test mother plug A1 is connected with a second end of the eighth resistor R8; a first end of the eighth resistor R8 is connected to the anode of the eighth led D8; the negative electrode of the eighth light-emitting diode D8 is connected with the negative electrode of the output end of the fourth direct current loop; the eighth light emitting diode D8 serves as a standby status indicator lamp.

As shown in fig. 4, in one embodiment, the first pin of the test female a1 is connected to the negative terminal of the output terminal of the second dc loop; a second pin of the test female plug A1 is connected with a second end of the closing button F1; a third pin of the test female plug A1 is connected with a second end of the first group of normally open contacts of the opening button F2; a fourth pin of the test mother plug A1 is connected with the cathode of the first diode D12; a fifth pin of the test female plug A1 is connected with the input end of the closing state indicating loop; a sixth pin of the test female plug A1 is connected with the input end of the switching-off state indicating loop; a seventh pin of the test female plug A1 is connected with the input end of the fault state indicating loop; the eighth pin of the test mother plug A1 is connected with the cathode of the second diode D13; a ninth pin of the test female plug A1 is connected with a first end of a second group of normally open contacts of the opening button F2; a tenth pin of the test female plug A1 is connected with a second end of the second group of normally open contacts of the opening button F2; the thirteenth pin of the test mother socket A1 is connected with the cathode of the third diode D14; the fourteenth pin of the test mother plug A1 is connected with the input end of the unavailable state indicating loop; a fifteenth pin of the test mother pin A1 is connected with the cathode of a fourth diode D15; a sixteenth pin of the test mother plug A1 is connected with the input end of the standby state indicating loop; a seventeenth pin of the test female pin A1 is connected with the positive electrode of the output end of the second direct current loop; an eighteenth pin of the test female plug A1 is connected with the negative electrode of the output end of the second direct current loop; a twenty-fourth pin of the test female plug A1 is connected with the positive electrode of the output end of the first direct current loop; and a twenty-sixth pin of the test female plug A1 is connected with the negative pole of the output end of the first direct current loop.

It should be noted that the breaker type switch drawer referred to in the present disclosure can perform tripping operation remotely, switching on needs to be performed on site, and the switch state is transmitted to the switch drawer of the remote port; the contact type switch drawer is a switch drawer which can execute opening and closing remotely and has a switch state transmitted to a remote port; the reversible contactor type switch drawer is a switch drawer which can execute opening and closing remotely, has a switch state transmitted to a remote port and can change phases through power output.

In one embodiment, as shown in fig. 5, when the switch drawer to be tested is a circuit breaker type switch drawer, the pin side of the male connector a2 is connected to the switch drawer to be tested in a first connection manner. The pin side of the connecting male plug A2 and the switch drawer to be tested adopt different connecting modes, and the switch drawer to be tested with different function types can be met.

Specifically, the first connection mode is as follows: a fourth pin connected with the male plug A2 is used for connecting an external indication public end of the drawer of the switch to be tested; the fifth pin of the male connector A2 is used for connecting the external indication switch-on end of the switch drawer to be tested; the sixth pin of the male connector A2 is used for connecting the external indication switching-off end of the switch drawer to be tested; the seventh pin of the male connector A2 is connected with the first end of the fault signal of the switch drawer to be tested; the eighth pin of the connecting male plug A2 is used for connecting the second end of the fault signal of the switch drawer to be tested; the ninth pin connected with the male plug A2 is used for connecting the first end of the external command opening of the switch drawer to be tested; a tenth pin connected with the male plug A2 is used for connecting a second end of the external command opening of the switch drawer to be tested; a seventeenth pin connected with the male plug A2 is used for connecting the DC48V positive terminal of the switch drawer to be tested; an eighteenth pin connected with the male plug A2 is used for connecting the negative end of the DC48V of the drawer of the switch to be tested; a twenty-fourth pin connected with the male plug A2 is used for connecting the DC110V positive terminal of the switch drawer to be tested; a twenty-sixth pin connected with the male plug A2 is used for connecting the negative end of the DC110V of the drawer of the switch to be tested; and the first end of the electric leakage CT port of the switch drawer to be tested is connected with the second end of the electric leakage CT port of the switch drawer to be tested through a short-circuit resistor, and is used for avoiding the electric leakage detection protection action of the switch drawer.

In one embodiment, as shown in fig. 6, when the switch drawer to be tested is a contact-type switch drawer, the pin side of the male connector a2 is connected to the switch drawer to be tested in a second connection mode. The pin side of the connecting male plug A2 and the switch drawer to be tested adopt different connecting modes, and the switch drawer to be tested with different function types can be met.

Specifically, the second connection mode is as follows: the first pin of the connecting male plug A2 is used for connecting a DCS command common end of a switch drawer to be tested; the second pin of the connecting male plug A2 is used for connecting a DCS operation command end of the switch drawer to be tested; the third pin of the connecting male plug A2 is used for connecting a DCS stop command end of the switch drawer to be tested; a fourth pin connected with the male plug A2 is used for connecting a DCS command common end of the switch drawer to be tested; the fifth pin of the male connector A2 is used for connecting a DCS operation command end of the switch drawer to be tested; the sixth pin of the male connector A2 is used for connecting a DCS stop command end of the switch drawer to be tested; the seventh pin of the connecting male plug A2 is used for connecting the first end of the fault signal of the switch drawer to be tested; the eighth pin of the connecting male plug A2 is used for connecting the second end of the fault signal of the switch drawer to be tested; a twenty-fourth pin of the connecting male plug A2 is used for connecting the DC110V positive terminal of the switch drawer to be tested; a twenty-sixth pin connected with the male plug A2 is used for connecting the negative end of the DC110V of the drawer of the switch to be tested; a thirteenth pin of the connecting male plug A2 is used for connecting an unavailable public end of a switch drawer to be tested; a fourteenth pin connected with the male plug A2 is used for connecting an unavailable signal end of a switch drawer to be tested; a fifteenth pin of the connecting male plug A2 is used for connecting a first end of a contactor state signal of a switch drawer to be tested; the sixteenth pin of the connecting male plug A2 is used for connecting a second end of a contactor state signal of the switch drawer to be tested; a seventeenth pin of the male plug A2 is connected with the DC48V positive terminal of the switch drawer to be tested; an eighteenth pin connected with the male plug A2 is used for connecting the negative end of the DC48V of the drawer of the switch to be tested; and the first end of the electric leakage CT port of the switch drawer to be tested is connected with the second end of the electric leakage CT port of the switch drawer to be tested through a short-circuit resistor.

In one embodiment, as shown in fig. 7, when the switch drawer to be tested is a reversible contact type switch drawer, the pin side of the male connector a2 is connected to the switch drawer to be tested in a third connection manner. The pin side of the connecting male plug A2 and the switch drawer to be tested adopt different connecting modes, and the switch drawer to be tested with different function types can be met.

Specifically, the third connection mode is as follows: the first pin of the connecting male plug A2 is used for connecting a DCS command common end of a switch drawer to be tested; a second pin of the connecting male plug A2 is used for connecting a DCS command valve opening end of the switch drawer to be tested; the third pin of the male connector A2 is used for connecting a DCS command valve closing end of the switch drawer to be tested; the seventh pin of the connecting male plug A2 is used for connecting the first end of the fault signal of the switch drawer to be tested; the eighth pin of the connecting male plug A2 is used for connecting the second end of the fault signal of the switch drawer to be tested; a twenty-fourth pin of the connecting male plug A2 is used for connecting the DC110V positive terminal of the switch drawer to be tested; a twenty-sixth pin connected with the male plug A2 is used for connecting the negative end of the DC110V of the drawer of the switch to be tested; a thirteenth pin of the connecting male plug A2 is used for connecting an unavailable end of a switch drawer to be tested; a fourteenth pin connected with the male plug A2 is used for connecting an unavailable end of a switch drawer to be tested; a seventeenth pin of the male plug A2 is connected with the DC48V positive terminal of the switch drawer to be tested; an eighteenth pin connected with the male plug A2 is used for connecting the negative end of the DC48V of the drawer of the switch to be tested; a fourth pin of the connecting male plug A2 is used for connecting a common end of a switch drawer to be tested; the fifth pin of the male connector A2 is used for connecting the valve opening indicating end of the switch drawer to be tested; the sixth pin of the connecting male plug A2 is used for connecting the valve closing indicating end of the switch drawer to be tested.

As shown in fig. 8, in one embodiment, the switch drawer testing device includes a box C and an ac power input socket B disposed on the box C, and further includes any one of the switch drawer testing circuits provided in the embodiments of the present disclosure.

Specifically, the box C is used for bearing a switch drawer test circuit, components in the switch drawer test circuit are installed inside or on the surface of the box C, and the alternating-current power supply input interface is used for conveniently accessing 220V alternating current as an input power supply of the voltage transformation assembly 100.

As shown in fig. 8, in one embodiment, one side surface of the case C is provided as an operation panel; the operation panel is provided with a status indicator light, operation keys and various interfaces. The drawer testing device provides more convenient conditions for the testing work of the drawer operated by a single person, and the centralized placement of the components is convenient for observation and operation.

The off-line testing equipment for the switch drawer is small in size, convenient to carry and move in the operation process, and various states of the tested switch drawer can be seen from the indicating lamp of the panel only by one person operating the analog switch of the switch. This openly has designed the public A2 of connecting of multiple corresponding function interface to multiple switch drawer, can use the public A2 of inserting of connection of different grade type to be connected to the switch drawer of different grade type through this test equipment, tests different switch drawers, and the local is the off-line test to the switch drawer, and whole testing process has accomplished the zero contact with the system, has avoided the potential influence to the system.

In one embodiment, according to the function type of each switch drawer to be tested, the connection male plug a2 and each switch drawer to be tested select a corresponding connection mode, once the connection male plug a2 is connected, the connection male plug a2 is fixed to each switch drawer to be tested, only one wiring is needed, and then the connection male plug a2 and the test female plug a1 are plugged in and pulled out, so that the switch drawers can be plugged in and pulled out. By the operation mode, the connection and disconnection between the male plug A2 and each switch drawer to be tested during testing are avoided, the testing efficiency can be obviously improved, and the occurrence of connection errors is reduced.

In one embodiment, the specific method of use of the present disclosure is as follows:

the power supply is firstly connected into a 220V power supply through an alternating current power supply input socket B, the power supply reaches a power switch F through a fuse FU, the power switch F is switched on, alternating current enters a power supply conversion module D, the power supply conversion module D outputs 5V, 24V, 48V and 110V direct current voltages at the moment, 5V positive polarity voltage is limited through a first resistor R1 and forms a loop through a power indicator lamp D1, the power indicator lamp D1 is lightened, and the whole machine enters a preparation state.

The machine has two functions:

a first function of outputting a dc voltage to the outside:

when the output switch F0 is pressed, 48V positive voltage flows to the coil of the relay K through the output switch F0 and then returns to 48V negative pole, the coil of the relay K is electrified and excited, and all normally open contacts in the loop are all switched on.

The first path, the direct current 110V is output to a first direct current socket E1, and the external part can use a 110V direct current power supply through the socket; meanwhile, the 110V positive polarity voltage flows through the ninth light emitting diode D9 via the ninth resistor R9, and the dc110V output indicator lamp is turned on.

The second path, the direct current 48V is output to a second direct current socket E2, and the outside can use a 48V direct current power supply through the socket; meanwhile, the 48V positive polarity voltage flows through the tenth light emitting diode D10 via the tenth resistor R10, and the dc48V output indicator lamp is turned on.

The third path, the direct current 24V is output to a third direct current socket E3, and the outside can use 24V direct current power supply through the socket; meanwhile, the 24V positive polarity voltage is current-limited by the eleventh resistor R11 and flows through the eleventh light emitting diode D11, and the 24V output indicator lamp D11 is turned on.

The second function is to perform off-line test on the switch drawer:

the circuit breaker type switch drawer test selects a first connection male plug A2, and the connection mode belongs to off-line use, and a CT loop cannot be connected into the loop to cause switch leakage detection protection action, so that the CT connection port needs to be short-circuited by a resistor RX. The pin side of the selected corresponding connection male plug A2 is connected with the corresponding port of the corresponding breaker type switch drawer, and the plug side of the connection male plug A2 is connected with the slot side of the test female plug A1.

After the whole test loop is connected:

and 1.1, closing a switch, namely closing a breaker type switch drawer. According to the working condition of the switch drawer, at the moment, the switch-on external indication is sent by the external indication common end and the external indication switch-on end of the switch drawer, at the moment, the two ports are in a conducting state, the 5V positive power supply passes through the first diode D12, passes through the external indication common end, the external indication switch-on end and the fourth resistor R4, returns to the 5V negative electrode through the fourth light-emitting diode D4, and at the moment, the fourth light-emitting diode D4 is lightened, so that the switch-on function of the switch drawer to be tested is normal.

1.2, opening a brake, and simulating external command opening. The opening button F2 is pressed, the ninth pin and the tenth pin of the female plug A1 are tested to be short-circuited, and the corresponding ninth pin and the tenth pin are short-circuited by connecting the male plug A2, so that the opening operation of the breaker type switch drawer is realized. According to the requirement of the type of working condition of the switch drawer, the external indication of the opening is sent by the external indication common terminal and the external indication opening terminal of the switch drawer, at this time, the test female plug A1 and the fourth pin and the sixth pin connected with the male plug A2 are in a conducting state, as can be obtained according to fig. 3, the 5V positive power supply passes through the first diode D12, passes through the test female plug A1, the fourth pin and the sixth pin connected with the male plug A2 and the fifth resistor R5, and then returns to the 5V negative pole through the fifth light emitting diode D5, at this time, the opening indicator lamp, namely the fifth light emitting diode D5, is lightened, and the opening function of the switch drawer to be tested is normal.

1.3, a fault is detected, the breaker type switch drawer is switched on, the test button is manually pressed to enable the breaker type switch drawer to trip to simulate the fault, according to the requirement of the type of the switch, the external indication common end and the external indication switching-off end of the switch drawer send a switching-off instruction, meanwhile, two fault signal ends of the switch drawer also send fault signals, at the moment, the test female plug A1 and the seventh pin and the eighth pin which are connected with the male plug A2 are in a conducting state, according to the diagram in the figure 3, a 5V positive-polarity power supply passes through the second diode D13, the seventh pin and the eighth pin which are connected with the male plug A2 and the sixth resistor R6 are tested female plug A1, the test female plug A2 returns to a 5V negative pole through the sixth light-emitting diode D6, the fifth light-emitting diode D5 is turned on, and the sixth light-emitting diode D6 is also turned on at the same time, and the fault indication of the tested switch drawer is.

The test of the breaker type switch drawer in three states indicates that the tested switch drawer is normal if the indication is correct under the corresponding working condition; if no indication is given, the switch drawer needs to be correspondingly checked.

And secondly, testing the contact type switch drawer, selecting a second connection mode between the male plug A2 and the switch drawer to be tested, wherein the connection type is off-line, and the CT loop of the switch drawer cannot be connected into the loop to cause the leakage detection protection action of the switch drawer, so that two leakage CT ports of the switch drawer to be tested need to be connected by a short-circuit resistor.

2.1, simulating closing, pressing a closing button F1 to simulate closing, sending 48V direct current to a second pin of the test female plug A1 through the closing button F1, further sending to a second pin connected with the male plug A2, sending a closing command to a DCS operation command end according to the requirement of the type condition of a contact type switch, realizing closing operation by a contactor in the switch drawer, sending a closing instruction command to a DCS operation instruction end and a DCS command common end of the tested switch drawer according to the type condition of the type switch, at this time, a fourth pin connected with the male plug A2 and a fifth pin are in a conducting state, obtaining a 5V positive power supply through a first diode D12, the DCS command common end, the DCS operation instruction end and a fourth resistor R4, and indicating that a fourth light emitting diode D4 returns to a 5V negative pole through closing, and at this time, indicating that the fourth light emitting diode D4 is turned on, the closing function of the tested switch drawer is normal.

2.2, simulating opening, pressing an opening button F2 to simulate opening, sending the 48V direct current to the third pin of the test female plug A1 through an opening button F2, then sending the direct current to the third pin connected with the male plug A2, according to the requirements of the type of working condition of the contact type switch drawer, the opening command is sent to a DCS stop command end, the internal contactor of the switch drawer realizes the opening operation, according to the type of working condition of the switch, the DCS command common end and the DCS stop indication end send opening indication instructions, at this time, the DCS command common end and the DCS stop indication end are in a conducting state, as shown in fig. 3, the 5V positive power source passes through the first diode D12, and through the conduction between the fourth pin and the sixth pin of the test socket a1 and the fifth resistor R5, the fifth light emitting diode D5 is turned back to the 5V negative electrode by switching on, and at this time, the fifth light emitting diode D5 is turned on by switching off, which indicates that the switching-off function of the switch drawer under test is normal.

And 2.3, a contactor in the switch drawer is switched on, an overcurrent fault is simulated by manually pressing a K test button of a thermal relay, according to the requirement of the type of working condition of the switch drawer, the DCS commands the public end and the DCS stop indicating end to send a switching-off instruction, and simultaneously, the fault signal end also sends a fault signal, at the moment, two ports of the fault signal are in a conducting state, according to the figure 3, a 5V positive-polarity power supply passes through a second diode D13, and returns to a 5V negative electrode through a fault indication sixth light-emitting diode D6 through a seventh pin, an eighth pin and a sixth resistor R6 of the test master plug A1, the switching-off indicates that the fifth light-emitting diode D5 is lighted, and meanwhile, the fault indication sixth light-emitting diode D6 is lighted, so that the test fault indication is normal. At this time, the thermal relay K is reset, according to this condition, the two ports of the fault signal will also stop sending out the fault signal, at this time, the two ports of the fault signal should be in an off state, as can be seen from fig. 3, the 5V positive power supply cannot return to the 5V negative electrode through the sixth light emitting diode D6, the fault indicates that the sixth light emitting diode D6 cannot be turned on, and the fault reset operation is normal.

In the above tests of the contactor type switch drawer in several states, the indicator light which needs to be turned on is required each time, and the indicator light needs to be turned on under the corresponding working condition, and if the condition that the indication is not sent exists, the switch drawer needs to be correspondingly checked.

And thirdly, testing the reversible contactor type switch drawer, and selecting a third connection mode between the connection male plug A2 and the switch drawer to be tested.

3.1, simulating valve opening, pressing a closing button F1 to simulate closing (function of opening) and sending 48V direct current to a second pin of the test female plug A1 through a closing button F1 and then to a second pin connected with the male plug A2, sending a valve opening command to a DCS command valve opening end according to the type condition requirement of a reversible contact type switch, realizing valve opening operation of a contactor inside the switch, sending a valve opening command to a common end and a valve opening indicating end of a tested switch drawer according to the type condition of the switch, and leading the common end and the valve opening indicating end of the tested switch drawer to be in a conducting state at the moment, wherein a 5V positive power supply passes through a first diode D12, passes through a fourth pin, a fifth pin and a fourth resistor R4 of the test female plug A1 and returns to a 5V negative electrode through the valve opening command fourth light emitting diode D4, and then the valve opening command indicates that a fourth light emitting diode D4 is turned on, the valve opening function of the tested switch drawer is normal.

3.2, simulating a valve closing, pressing a brake separating button F2 to simulate a brake separating (function is the same as the valve closing), sending 48V direct current to a third pin of the test female plug A1 through a brake separating button F2, then sending to a third pin connected with the male plug A2, sending a valve closing command to a DCS command valve closing end of the tested switch drawer according to the type of condition requirement of the reversible contact type switch, realizing the valve closing operation of the internal contactor of the switch, sending a valve closing instruction command to a common end and a valve closing instruction end of the tested switch drawer according to the type of condition of the switch, and at this time, indicating that the common end and the valve closing instruction end of the tested switch drawer are in a conducting state, and obtaining a 5V positive polarity power supply through a first diode D12, through a fourth pin, a sixth pin and a fifth resistor R5 of the test female plug A1, indicating that a fifth light emitting diode D5 returns to a 5V negative electrode through a valve closing instruction, and indicating that a fifth light emitting diode D5 is lighted, the valve closing function of the tested switch drawer is normal.

3.3, a fault is simulated by manually pressing a test button of the thermal relay K, according to the requirement of the type of the switch, two ports of a fault signal of the switch drawer to be tested send out a fault signal, at the moment, the two ports of the fault signal of the switch drawer to be tested are in a conducting state, according to the graph shown in fig. 3, a 5V positive-polarity power supply passes through the second diode D13, passes through the seventh pin, the eighth pin and the sixth resistor R6 of the test mother plug A1 and returns to a 5V negative electrode through the fault indication sixth light-emitting diode D6, the opening indicates that the fifth light-emitting diode D5 is turned on, the fault indication sixth light-emitting diode D6 is also turned on at the same time, and the fault indication of the switch drawer to be tested is normal. At this time, the thermal relay K is reset, according to the situation, the two ports of the fault signal of the switch drawer to be tested stop sending the fault signal at the same time, at this time, the two ports of the fault signal of the switch drawer to be tested should be in an off state, as can be seen from fig. 3, the 5V positive power supply cannot return to the 5V negative electrode through the sixth light emitting diode D6, the fault indicates that the sixth light emitting diode D6 cannot be lightened, and the fault reset operation is normal.

And (5) turning off the power supply after the whole test is finished.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A switch drawer test circuit, comprising:

the voltage transformation assembly is used for accessing alternating current to output multi-path direct current voltage for testing;

the voltage output assembly is connected with the voltage transformation assembly and is used for indicating, displaying and supplying the multi-path direct current voltage;

the testing component is connected with the voltage transformation component and is used for connecting the switch drawer to be tested and indicating the state of the switch drawer to be tested; and

and the switching-on and switching-off simulation unit is connected with the voltage transformation assembly and the testing assembly and is used for simulating a switching-on operation instruction and a switching-off operation instruction of the switch drawer to be tested so as to perform off-line testing on the switch drawer to be tested.

2. The switch drawer test circuit of claim 1, wherein the voltage transformation assembly comprises a fuse, a power switch, a power conversion module, a first resistor for limiting current, and a power indicator;

the live wire of the alternating current is connected with the first end of the fuse protector; the second end of the fuse is connected with the first input end of the power switch; the zero line of the alternating current is connected with the second input end of the power switch; the output end of the power switch is connected with the input end of the power conversion module; the output end of the power supply conversion module comprises a first direct current loop output end, a second direct current loop output end, a third direct current loop output end and a fourth direct current loop output end; the positive electrode of the output end of the fourth direct current loop is connected with the first end of the first resistor; the second end of the first resistor is connected with the anode of the power indicator lamp; and the negative electrode of the power supply indicator lamp is connected with the negative electrode of the output end of the fourth direct current loop.

3. The switch drawer test circuit of claim 2, wherein the voltage output component comprises an output switch, a relay, a reverse absorption diode, a first voltmeter, a second voltmeter, a third voltmeter, a first dc outlet, a second dc outlet, a third dc outlet, a first dc indication loop, a second dc indication loop, and a third dc indication loop;

the positive electrode of the output end of the second direct current loop is connected with the first end of the output switch; the second end of the output switch is connected with the negative electrode of the reverse absorption diode and the first end of the relay; the negative electrode of the output end of the second direct current loop is connected with the positive electrode of the reverse absorption diode and the second end of the relay;

the output end of the first direct current loop is connected with the first direct current jack through a first group of normally open contacts of the relay; the first direct current socket is connected with the input end of the first direct current indicating loop; the first voltmeter is connected in parallel between two poles of the first direct current socket;

the output end of the second direct current loop is connected with the second direct current jack through a second group of normally open contacts of the relay; the second direct current socket is connected with the input end of the second direct current indicating loop; the first voltmeter is connected in parallel between two poles of the second direct current socket;

the output end of the third direct current loop is connected with the third direct current jack through a third group of normally open contacts of the relay; the third direct current socket is connected with the input end of the third direct current indicating loop; the first voltmeter is connected in parallel between two poles of the third direct current jack.

4. The switch drawer test circuit of claim 2, wherein the switching-on/off simulation unit comprises a switching-on button, a switching-on indication loop, a switching-off indication loop, and a switching-off button provided with two sets of linked normally open contacts;

the positive electrode of the output end of the second direct current loop is connected with the first end of the closing button and the first end of the first group of normally open contacts of the opening button; the second end of the closing button is connected with the input end of the closing indicating loop; the second ends of the first group of normally open contacts of the opening button are connected with the input end of the opening indication loop; and the negative electrode of the output end of the second direct current loop is connected with the output ends of the switching-on indicating loop and the switching-off indicating loop.

5. The switch drawer test circuit of claim 4, wherein the test component comprises a first diode, a second diode, a third diode, a fourth diode, a closing state indication loop, an opening state indication loop, a fault state indication loop, an unavailable state indication loop, a standby state indication loop, a test female plug and a connection male plug matched with the test female plug;

the positive electrode of the output end of the fourth direct current loop is connected with the positive electrode of the first diode, the positive electrode of the second diode, the positive electrode of the third diode and the positive electrode of the fourth diode; the negative electrode of the output end of the fourth direct current loop is connected with the output end of the switching-on state indicating loop, the output end of the switching-off state indicating loop, the output end of the fault state indicating loop, the output end of the unavailable state indicating loop and the output end of the standby state indicating loop; the pin side of the test female plug is connected with the voltage transformation assembly, the opening and closing simulation unit and the test assembly; the socket side of the test female plug is connected with the plug side of the connection male plug; the pin side of the connecting male plug is used for connecting the switch drawers to be tested with different function types.

6. The switch drawer test circuit of claim 5, wherein when the switch drawer to be tested is a circuit breaker type switch drawer, the pin side of the connection male plug and the switch drawer to be tested adopt a first connection mode:

the fourth pin connected with the male plug is used for connecting an external indication public end of the switch drawer to be tested; the fifth pin connected with the male plug is used for connecting the external indication switching-on end of the switch drawer to be tested; the sixth pin connected with the male plug is used for connecting the external indication switching-off end of the switch drawer to be tested; the seventh pin connected with the male plug is used for connecting the first end of the fault signal of the switch drawer to be tested; the eighth pin connected with the male plug is used for connecting the second end of the fault signal of the switch drawer to be tested; the ninth pin connected with the male plug is used for connecting the first end of the external command switching-off of the switch drawer to be tested; the tenth pin connected with the male plug is used for connecting the second end of the external command switch-off of the switch drawer to be tested; the seventeenth pin connected with the male plug is used for connecting the DC48V positive terminal of the switch drawer to be tested; the eighteenth pin connected with the male plug is used for connecting the negative end of the DC48V of the drawer of the switch to be tested; a twenty-fourth pin connected with the male plug is used for connecting the positive end of the DC110V of the switch drawer to be tested; the twenty-sixth pin connected with the male plug is used for connecting the negative end of the DC110V of the drawer of the switch to be tested; and the first end of the electric leakage CT port of the switch drawer to be tested is connected with the second end of the electric leakage CT port of the switch drawer to be tested through a short-circuit resistor, and is used for avoiding the electric leakage detection protection action of the switch drawer.

7. The switch drawer test circuit of claim 5, wherein when the switch drawer to be tested is a contact type switch drawer, the pin side of the connection male plug and the switch drawer to be tested adopt a second connection mode:

the first pin of the connecting male plug is used for connecting a DCS command common end of the switch drawer to be tested; the second pin connected with the male plug is used for connecting a DCS operation command end of the switch drawer to be tested; the third pin connected with the male plug is used for connecting a DCS stop command end of the switch drawer to be tested; the fourth pin connected with the male plug is used for connecting a DCS command common end of the switch drawer to be tested; the fifth pin connected with the male plug is used for connecting a DCS operation command end of the switch drawer to be tested; the sixth pin connected with the male plug is used for connecting a DCS stop command end of the switch drawer to be tested; the seventh pin connected with the male plug is used for connecting the first end of the fault signal of the switch drawer to be tested; the eighth pin connected with the male plug is used for connecting a second end of a fault signal of the switch drawer to be tested; a twenty-fourth pin of the male plug is used for connecting the DC110V positive terminal of the switch drawer to be tested; a twenty-sixth pin connected with the male plug is used for connecting the negative end of the DC110V of the switch drawer to be tested; the thirteenth pin connected with the male plug is used for connecting an unavailable public end of the switch drawer to be tested; the fourteenth pin connected with the male plug is used for connecting an unavailable signal end of the switch drawer to be tested; the fifteenth pin connected with the male plug is used for connecting the first end of the contactor state signal of the switch drawer to be tested; the sixteenth pin connected with the male plug is used for connecting the second end of the contactor state signal of the switch drawer to be tested; a seventeenth pin connected with the male plug is used for connecting the DC48V positive terminal of the switch drawer to be tested; an eighteenth pin connected with the male plug is used for connecting the negative end of the DC48V of the drawer of the switch to be tested; and the first end of the electric leakage CT port of the switch drawer to be tested is connected with the second end of the electric leakage CT port of the switch drawer to be tested through a short-circuit resistor.

8. The switch drawer test circuit of claim 5, wherein when the switch drawer to be tested is a reversible contact type switch drawer, the pin side of the connection male plug and the switch drawer to be tested adopt a third connection mode:

the first pin of the connecting male plug is used for connecting a DCS command common end of the switch drawer to be tested; the second pin connected with the male plug is used for connecting a DCS command valve opening end of the switch drawer to be tested; the third pin connected with the male plug is used for connecting a DCS command valve closing end of the switch drawer to be tested; the seventh pin connected with the male plug is used for connecting the first end of the fault signal of the switch drawer to be tested; the eighth pin connected with the male plug is used for connecting a second end of a fault signal of the switch drawer to be tested; a twenty-fourth pin of the male plug is used for connecting the DC110V positive terminal of the switch drawer to be tested; a twenty-sixth pin connected with the male plug is used for connecting the negative end of the DC110V of the switch drawer to be tested; the thirteenth pin connected with the male plug is used for connecting the unavailable end of the switch drawer to be tested; the fourteenth pin connected with the male plug is used for connecting an unavailable end of the switch drawer to be tested; a seventeenth pin connected with the male plug is used for connecting the DC48V positive terminal of the switch drawer to be tested; an eighteenth pin connected with the male plug is used for connecting the negative end of the DC48V of the drawer of the switch to be tested; the fourth pin of the male plug is used for connecting the common end of the switch drawer to be tested; the fifth pin connected with the male plug is used for connecting the valve opening indicating end of the switch drawer to be tested; and the sixth pin connected with the male plug is used for connecting a valve closing indicating end of the switch drawer to be tested.

9. A switch drawer test device comprising a box and an ac power input socket provided on the box, characterized in that the switch drawer test device comprises a switch drawer test circuit according to any of claims 1 to 8.

10. The switch drawer test apparatus of claim 9, wherein one side of the box body is provided as an operation panel; and the operation panel is provided with a state indicator lamp, an operation key and various interfaces.

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