A current transformer auxiliary wiring device

Abstract

The application relates to the field of current transformers, and discloses a current transformer auxiliary wiring device which comprises a first transformer, the inside of the first transformer is symmetrically provided with a first connecting point and a second connecting point, and the bottom of the first transformer is provided with an auxiliary detection device; the connecting piece is connected with the detection exchange piece, the motor on the detection exchange piece is connected with the secondary coil, the positive and negative poles are determined through the generated voltage and current, the detection exchange piece is driven to move, the direction of the current transformer threading is not needed to be determined, the possible errors during the connection of the current transformer are reduced, when the detection exchange piece is in contact with one of the first connecting point and the second connecting point, the detection exchange piece can be connected with the connecting piece and disconnected with the motor on the detection exchange piece, and the safety during use is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of current transformers, more particularly, it relates to a current transformer auxiliary wiring device. BACKGROUND

[0002] A current transformer (CT) is a special transformer used for measurement or protection, which can convert large current into small current (usually 5A or 1A) in proportion, facilitating instrument measurement and relay protection. Its working principle is based on electromagnetic induction. The primary side is connected in series with the main circuit, and the secondary side is connected with the measurement or protection device, which realizes high and low voltage isolation and ensures safe operation. It is widely used in power systems, industrial power distribution and electric energy metering fields.

[0003] A patent application with publication number CN116913665B discloses a current transformer, which comprises a shell, a magnetic core, a winding and a mounting seat. The magnetic core is provided with a cavity, and the cavity is filled with a gas that expands when heated. The mounting seat is provided with a box body, and the box body is provided with a telescopic rod that communicates with the cavity of the magnetic core. The winding is provided with a first wiring and a second wiring, and the ends of the first wiring and the second wiring away from the winding are arranged in the box body. The telescopic rod is provided with a moving wire, and the telescopic rod drives the moving wire to move on the surface of the first wiring during extension. A set of standby circuits is added to the winding. After the winding is opened, the standby circuit is started. The standby circuit can release the magnetic flux in the magnetic core, so that the current transformer will not be damaged, and there will be no great safety threat.

[0004] The above device can prevent the secondary wiring from being disconnected and protect the electromagnetic core during use. However, the direction of the wiring still needs to be paid attention to during use. If the wiring is wrong, it may cause damage to the ammeter connected subsequently and inaccurate detection of the ammeter. SUMMARY

[0005] The present application provides a current transformer auxiliary wiring device, which solves the technical problems that the direction of the wiring still needs to be paid attention to during use in related technologies, and if the wiring is wrong, it may cause damage to the ammeter connected subsequently and inaccurate detection of the ammeter.

[0006] The application provides a current transformer auxiliary wiring device, which comprises a first transformer, a first connecting point and a second connecting point are symmetrically arranged in the first transformer, an auxiliary detection device is arranged at the bottom of the first transformer, the auxiliary detection device is used for protecting the first transformer when the first transformer is connected and detecting the voltage polarity of a secondary coil on the first transformer, the auxiliary detection device comprises a connecting piece, a mounting piece, a limiting piece and a detection switching piece, the connecting piece is symmetrically arranged in the first transformer, the limiting piece is fixedly installed at the two ends of the connecting piece, the mounting piece is arranged at the bottom of the first transformer, and the detection switching piece is arranged outside the mounting piece, the connecting piece drives the limiting piece to descend, the position of the detection switching piece is locked, and the detection switching piece is used for increasing the load in the first transformer and detecting the polarity of the voltage.

[0007] As a further optimization scheme of the application, the connecting piece comprises a first sliding rod which is slidingly installed in the first transformer and is symmetrically arranged, a nut is arranged outside the first sliding rod, a connecting sliding plate is fixedly installed at the end of the first sliding rod close to the center of the first transformer, a first sliding groove is arranged on the connecting sliding plate, a first sliding block is slidingly installed in the first sliding groove, a connecting rod is fixedly installed on the first sliding block, and the connecting rod is used for being connected with the detection switching piece.

[0008] As a further optimization scheme of the application, a plurality of first telescopic rods are fixedly installed on the side of the first sliding groove away from the connecting rod, and the first telescopic rods are provided with first springs outside.

[0009] As a further optimization scheme of the application, the mounting piece comprises a second sliding rod which is fixedly installed in the first transformer and is symmetrically arranged, the detection switching piece is slidingly installed outside the second sliding rod, second springs and third springs are arranged on the two sides of the detection switching piece, and the elastic forces of the second springs and the third springs are the same.

[0010] As a further optimization scheme of the application, first fixed plates are fixedly installed on the two sides of the connecting sliding plate, limiting pieces are rotatably installed in the first fixed plates, the limiting pieces comprise first rotating plates and second rotating plates which are rotatably installed on the two first fixed plates, the first rotating plates and the second rotating plates are rotatably connected at the ends, a rotating limiting block is rotatably installed on the side of the second rotating plate, a rotating fixed block is fixedly installed on the side of the rotating limiting block away from the end of the second rotating plate, a third sliding column is slidingly installed in the rotating fixed block, a second fixed plate is fixedly installed on the top of the rotating fixed block, a fourth spring is fixedly installed at the bottom of the second fixed plate, and the end of the fourth spring is connected with the top of the third sliding column.

[0011] As a further optimization scheme of the present application, the limiting piece comprises a third rotating block fixedly installed on the side of the second rotating plate, the first rotating plate is fixedly installed with a second rotating block, and grooves are arranged on both sides of the rotating limiting block, so that the third rotating block and the second rotating block are rotatably connected with both sides of the rotating limiting block, and the third rotating block and the second rotating block are used for limiting the rotating limiting block.

[0012] As a further optimization scheme of the present application, the detection switching piece comprises a first switching plate slidingly installed on the outside of the second sliding rod, the bottom of the first mutual inductor is fixedly installed with a fourth sliding rod, the inside of the first switching plate is fixedly installed with a second switching plate, the inside of the second switching plate is slidingly installed with a first switching sliding rod, the both ends of the first switching sliding rod are fixedly installed with a third switching plate and a first switching sliding rod, the side of the third switching plate and the first switching sliding rod is fixedly installed with a first switching spring, the bottom of the first switching plate is fixedly installed with a switching protrusion, and the inside of the switching protrusion is provided with a first motor.

[0013] As a further optimization scheme of the present application, the connecting sliding plate is made of conductive metal material, the connecting position of the connecting sliding plate and the connecting rod and the first sliding rod is conductive metal connection, and an insulating piece is arranged between the connecting position of the connecting sliding plate and the first mutual inductor.

[0014] As a further optimization scheme of the present application, the maximum distance of the two connecting sliding plates is the same as the width of the internal groove of the first mutual inductor.

[0015] As a further optimization scheme of the present application, when the third sliding column descends to the bottom end, the bottom end height of the third sliding column is lower than the top end height of the first switching plate.

[0016] The present application has the following advantages:

[0017] The current transformer auxiliary wiring device disclosed by the present application is connected with the detection switching piece through the connecting piece in the use process, the motor on the detection switching piece is connected with the secondary coil, the positive and negative poles are determined through the generated voltage and current, the function of driving the detection switching piece to move is realized, the direction of the mutual inductor threading is not needed to be determined, the possible errors in the mutual inductor connection are reduced, when the detection switching piece contacts one of the first connecting point and the second connecting point, the detection switching piece can be connected with the connecting piece and disconnected with the motor on the detection switching piece, and the safety in use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall device appearance of the present application;

[0019] Figure 2 is a schematic diagram of the internal structure of the overall device of the present application;

[0020] Figure 3 is the internal structure diagram of the connecting piece of the present application;

[0021] Figure 4 is the internal structure diagram of the detecting and exchanging piece of the present application;

[0022] Figure 5 is the internal structure diagram of the limiting piece of the present application;

[0023] Figure 6 is the internal structure connection diagram of the limiting piece of the present application;

[0024] Figure 7 is the internal structure transmission diagram of the limiting piece of the present application.

[0025] In the figure:

[0026] 1, first mutual inductor; 11, first connecting point; 12, second connecting point;

[0027] 2, auxiliary detecting device; 21, connecting piece; 211, first sliding rod; 212, nut; 213, first sliding block; 214, connecting rod; 215, connecting sliding plate; 216, first telescopic rod; 217, first spring; 218, first fixed plate; 219, first sliding groove; 22, mounting piece; 221, second sliding rod; 222, second spring; 223, third spring; 23, limiting piece; 231, first rotating plate; 232, rotating limiting block; 233, rotating fixed block; 234, third sliding column; 235, second fixed plate; 236, fourth spring; 237, second rotating block; 238, third rotating block; 239, second rotating plate; 24, detecting and exchanging piece; 241, fourth sliding rod; 242, first exchanging plate; 243, second exchanging plate; 244, first exchanging spring; 245, third exchanging plate; 246, first exchanging sliding rod; 247, exchanging protrusion; 248, first motor. DETAILED DESCRIPTION

[0028] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that discussions of these implementations are merely provided for the purposes of enabling better understanding of the subject matter and can be changed in function, arrangement, and content without departing from the protective scope of the present specification. Each example can omit, substitute, or add various processes or components according to necessity. In addition, features described with respect to some examples can also be combined in other examples.

[0029] As Figures 1 to 3The auxiliary wiring device of the current transformer shown in the embodiment of the application comprises a first transformer 1, the inside of the first transformer 1 is symmetrically provided with a first connecting point 11 and a second connecting point 12, the bottom of the first transformer 1 is provided with an auxiliary detection device 2, the auxiliary detection device 2 is used for protecting when the first transformer 1 is connected and detecting the voltage polarity of the secondary coil on the first transformer 1; the auxiliary detection device 2 comprises a connecting piece 21, a mounting piece 22, a limiting piece 23 and a detection switching piece 24, the connecting piece 21 is symmetrically arranged in the inside of the first transformer 1, the limiting piece 23 is fixedly installed at the two ends of the connecting piece 21, the mounting piece 22 is arranged at the bottom of the first transformer 1, the outside of the mounting piece 22 is provided with the detection switching piece 24, the connecting piece 21 moves to drive the limiting piece 23 to descend, which is used for locking the position of the detection switching piece 24, and the detection switching piece 24 is used for increasing the load in the inside of the first transformer 1 and detecting the polarity of the voltage.

[0030] It should be noted that, since the current transformer needs to be paid attention to the connection of positive and negative poles when in use, and the direction of the current to be measured needs to be paid attention to, and at the same time the closed circuit needs to be kept with the ammeter connection side, at this time the positive and negative poles of the two connecting pieces 21 are determined, and the two connecting pieces 21 are connected with the positive and negative poles of the ammeter in correspondence, the first connecting point 11 and the second connecting point 12 are symmetrically arranged in the first transformer 1, the first connecting point 11 and the second connecting point 12 are respectively connected with the coils on the cores, the positive and negative poles of the first connecting point 11 and the second connecting point 12 are opposite, and the detection switch 24 is provided with a motor, and the coil is also connected with the motor power supply on the detection switch 24, the connecting piece 21 is provided with a connecting post, so that the connecting piece 21 is connected with the detection switch 24, when the high-voltage current passes through the inside of the first transformer 1 and is converted into low-voltage current by the coil inside the first transformer 1, the voltage and current generated on the coil are used to start the motor, so as to drive the detection switch 24 to move, and the positive and negative rotation of the motor has the effect of judging the current direction and the positive and negative poles, so the detection switch 24 can be driven to move, when the detection switch 24 approaches the first connecting point 11 or the second connecting point 12, the detection switch 24 is extruded, so that the motor on the detection switch 24 is disconnected with the coil, so that there is no user on the secondary connection side of the transformer, then the detection switch 24 is connected with the connecting piece 21, and the detection switch 24 can make the secondary connection of the first transformer 1 in a closed state and a state without load, so as to realize the detection of the positive and negative poles and prevent the disconnection of the secondary connection of the first transformer 1. For some specific scenes, such as the current transformer on the high-voltage line on the mountain, the current direction cannot be determined at the first time, this device can reduce the work of determining the current direction, and the device does not need to determine the direction of the transformer threading in the process of use, and the possible errors in the connection of the transformer are reduced. The connecting piece 21 is connected with the detection switch 24, and the motor on the detection switch 24 is connected with the secondary coil (not shown in the figure), the positive and negative poles are determined by the generated voltage and current, the detection switch 24 is driven to move, and when the detection switch 24 contacts one of the first connecting point 11 or the second connecting point 12, it can be connected with the connecting piece 21, and disconnected with the motor on the detection switch 24, thereby improving the safety during use.

[0031] As Figures 2 to 3As shown, the connecting piece 21 comprises a first sliding rod 211 symmetrically arranged inside the first mutual inductor 1, the first sliding rod 211 is externally provided with a nut 212, and a connecting sliding plate 215 is fixedly installed at the end of the first sliding rod 211 close to the center of the first mutual inductor 1, a first sliding groove 219 is arranged on the connecting sliding plate 215, a first sliding block 213 is slidably installed inside the first sliding groove 219, and a connecting rod 214 is fixedly installed on the first sliding block 213, which is used to be connected with the detection switch 24.

[0032] It should be noted that the connecting rod 214 is used to be connected with the detection switch 24, and when the two first sliding rods 211 are connected with the positive and negative poles of the ammeter, the connecting sliding plate 215 can be driven to move away from the center of the first mutual inductor 1, thereby driving the limiting piece 23 to descend, so that the position of the detection switch 24 can be limited when the detection switch 24 moves close to the first connecting point 11 and the second connecting point 12.

[0033] As shown in Figure 3 As shown, the connecting piece 21 comprises a first sliding rod 211 symmetrically arranged inside the first mutual inductor 1, the first sliding rod 211 is externally provided with a nut 212, and a connecting sliding plate 215 is fixedly installed at the end of the first sliding rod 211 close to the center of the first mutual inductor 1, a first sliding groove 219 is arranged on the connecting sliding plate 215, a first sliding block 213 is slidably installed inside the first sliding groove 219, and a connecting rod 214 is fixedly installed on the first sliding block 213, which is used to be connected with the detection switch 24.

[0034] It should be noted that the first telescopic rod 216 and the first spring 217 can prevent the connecting sliding plate 215 from tilting during movement, thereby improving safety during use.

[0035] As shown in Figures 3 to 4 As shown, the connecting piece 21 comprises a first sliding rod 211 symmetrically arranged inside the first mutual inductor 1, the first sliding rod 211 is externally provided with a nut 212, and a connecting sliding plate 215 is fixedly installed at the end of the first sliding rod 211 close to the center of the first mutual inductor 1, a first sliding groove 219 is arranged on the connecting sliding plate 215, a first sliding block 213 is slidably installed inside the first sliding groove 219, and a connecting rod 214 is fixedly installed on the first sliding block 213, which is used to be connected with the detection switch 24.

[0036] It should be noted that when the two first sliding rods 211 are installed with the positive and negative poles of the ammeter, the coil on the first mutual inductor 1 can induce current to drive the detection switch 24 to move, and the detection switch 24 can be limited by the limiting piece 23 after moving, and when the two first sliding rods 211 are removed again, the limiting piece 23 can be reset, and the detection switch 24 outside the second sliding rod 221 can be reset synchronously under the action of the second spring 222 and the third spring 223, thereby preventing the secondary wiring of the first mutual inductor 1 from being open.

[0037] As shown in Figures 5 to 7As shown, the two sides of the connecting slide plate 215 are fixedly installed with first fixed plates 218, the inside of the first fixed plate 218 is rotatably installed with a limiting piece 23, the limiting piece 23 includes a first rotating plate 231 and a second rotating plate 239 rotatably installed on the two first fixed plates 218, the first rotating plate 231 and the second rotating plate 239 are rotatably connected at the end, the side of the second rotating plate 239 is rotatably installed with a rotating limiting block 232, the side of the rotating limiting block 232 away from the end of the second rotating plate 239 is fixedly installed with a rotating fixed block 233, the inside of the rotating fixed block 233 is slidably installed with a third slide column 234, the top of the rotating fixed block 233 is fixedly installed with a second fixed plate 235, the bottom of the second fixed plate 235 is fixedly installed with a fourth spring 236, and the end of the fourth spring 236 is connected with the top of the third slide column 234.

[0038] It should be noted that when the two first slide rods 211 are installed and connected with the wire, they can be fixed with the nut 212, and in the process of tightening the nut 212, the connecting slide plate 215 is pulled to move away from the center of the first mutual inductor 1, so as to drive the connecting position of the first rotating plate 231 and the second rotating plate 239 to drop, and then drive the rotating limiting block 232 on the second rotating plate 239 to drop, so as to drive the rotating fixed block 233 and the third slide column 234 to drop, so as to limit the detection switch 24 when detecting the movement of the detection switch 24, and the fourth spring 236 can make the third slide column 234 pass through the top of the detection switch 24 to limit the detection switch 24, so as to determine the positive and negative electrodes of the current direction.

[0039] As shown in the figure, Figures 6 to 7 The limiting piece 23 includes a third rotating block 238 fixedly installed on the side of the second rotating plate 239, the side of the first rotating plate 231 is fixedly installed with a second rotating block 237, the two sides of the rotating limiting block 232 are provided with grooves, so that the end of the third rotating block 238 and the second rotating block 237 is rotatably connected with the two sides of the rotating limiting block 232, and the third rotating block 238 and the second rotating block 237 are used to limit the rotating limiting block 232.

[0040] It should be noted that the third rotating block 238 and the second rotating block 237 can limit the rotating limiting block 232, since the second rotating plate 239 is rotatably connected with the rotating limiting block 232, and the positions of the second rotating plate 239 and the first rotating plate 231 cannot be determined, therefore, the positions of the rotating limiting block 232 are limited by the third rotating block 238 and the second rotating block 237, so as to prevent the second rotating plate 239 from rotating at a large angle during movement, which causes the third slide column 234 to fail to limit the detection switch 24.

[0041] As Figures 3 to 4 shown, the detection switch 24 comprises a first switch plate 242 slidingly mounted outside the second slide rod 221, the bottom of the first mutual inductor 1 is fixedly mounted with a fourth slide rod 241, the inside of the first switch plate 242 is fixedly mounted with a second switch plate 243, the inside of the second switch plate 243 is slidingly mounted with a first switch slide rod 246, both ends of the first switch slide rod 246 are fixedly mounted with a third switch plate 245 and a first switch slide rod 246, the side of the third switch plate 245 and the first switch slide rod 246 is fixedly mounted with a first switch spring 244, the bottom of the first switch plate 242 is fixedly mounted with a switch protrusion 247, and the inside of the switch protrusion 247 is provided with a first motor 248.

[0042] It should be noted that the connecting rod 214 on the first connecting piece 21 is connected with the third switch plate 245 at both ends of the first switch slide rod 246 through an electric wire, and when the first switch plate 242 moves towards the first connecting point 11 or the second connecting point 12, taking the first connecting point 11 as an example, when the first connecting point 11 contacts with the third switch plate 245, the first switch slide rod 246 is extruded towards the second connecting point 12 until the third slide rod 234 clamps the first switch plate 242, in the process of extrusion, the first motor 248 is disconnected with the coil, so that the secondary open circuit and the remaining load are closed, the first connecting point 11 is connected with the first slide rod 211, so as to realize the connection with the ammeter.

[0043] As Figure 3 shown, the connecting slide plate 215 is made of conductive metal material, the connecting position of the connecting slide plate 215 with the connecting rod 214 and the first slide rod 211 is connected by conductive metal, and an insulating piece is arranged between the connecting position of the connecting slide plate 215 with the first mutual inductor 1.

[0044] It should be noted that the connecting slide plate 215 is made of conductive metal material, the connecting position of the connecting slide plate 215 with the connecting rod 214 and the first slide rod 211 is connected by conductive metal, and an insulating piece is arranged between the connecting position of the connecting slide plate 215 with the first mutual inductor 1, so that the circuit does not contact with the remaining metal, preventing the current from being shunted and the load from being generated, and reducing the error.

[0045] As Figure 3 shown, the maximum distance between the two connecting slide plates 215 is the same as the width of the internal groove of the first mutual inductor 1.

[0046] It should be noted that the maximum distance of the two connecting slides 215 is the same as the width of the internal slot of the first mutual inductor 1, so that the first rotating plate 231 and the second rotating plate 239 can be maximally opened, and when the second rotating plate 239 and the first rotating plate 231 are in a straight line, it is the maximum distance of the connecting slide 215.

[0047] As shown in Figures 3 to 6 When the third slide column 234 is lowered to the bottom end, the bottom end height of the third slide column 234 is lower than the top end height of the first exchange plate 242.

[0048] It should be noted that when the third slide column 234 is lowered to the bottom end, the bottom end height of the third slide column 234 is lower than the top end height of the first exchange plate 242, so that the third slide column 234 can be clamped to the first exchange plate 242 for limiting the first exchange plate 242.

[0049] The above describes the embodiments of the present application, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative and not restrictive. Those skilled in the art can make many forms under the inspiration of the present embodiment, which are all within the protection scope of the present application.

Claims

1. An auxiliary wiring device for a current transformer, comprising a first current transformer (1), characterized in that: The first current transformer (1) has a first connection point (11) and a second connection point (12) symmetrically arranged inside. An auxiliary detection device (2) is provided at the bottom of the first current transformer (1). The auxiliary detection device (2) is used to protect the first current transformer (1) when it is connected and to detect the voltage polarity of the secondary coil on the first current transformer (1). The auxiliary detection device (2) includes a connector (21), a mounting component (22), a limiting component (23), and a detection exchange component (24). The connector (21) is symmetrically arranged inside the first current transformer (1). The limiting components (23) are fixedly installed at both ends of the connector (21). The mounting component (22) is provided at the bottom of the first current transformer (1). The detection exchange component (24) is provided outside the mounting component (22). The movement of the connector (21) causes the limiting component (23) to descend, which is used to lock the position of the detection exchange component (24). The detection exchange component (24) is used to detect the first current transformer (1). The sensor (1) has an internal load and a voltage polarity detection function. The first connection point (11) and the second connection point (12) are connected to the coil on the iron core respectively. The detection exchange component (24) is equipped with a motor, and the coil is also connected to the motor power supply on the detection exchange component (24). The connector (21) is equipped with a terminal block, so that the connector (21) is connected to the detection exchange component (24). The motor on the detection exchange component (24) is connected to the secondary coil. The positive and negative poles are determined by the generated voltage and current, so as to drive the detection exchange component (24) to move.

2. The auxiliary wiring device for a current transformer according to claim 1, characterized in that: The connector (21) includes a first slide rod (211) symmetrically arranged inside the first current transformer (1) and a nut (212) on the outside of the first slide rod (211). A connecting slide plate (215) is fixedly installed at the end of the first slide rod (211) near the center of the first current transformer (1). A first groove (219) is provided on the connecting slide plate (215). A first slider (213) is slidably installed inside the first groove (219). A connecting rod (214) is fixedly installed on the first slider (213). The connecting rod (214) is used to connect with the detection exchange component (24).

3. The auxiliary wiring device for a current transformer according to claim 2, characterized in that: The connector (21) includes a plurality of first telescopic rods (216) fixedly installed on the side of the first slide groove (219) away from the connecting rod (214), and a first spring (217) is provided on the outside of the first telescopic rod (216).

4. The auxiliary wiring device for a current transformer according to claim 3, characterized in that: The mounting component (22) includes a second slide rod (221) fixedly installed inside the first current transformer (1) and symmetrically arranged. A detection exchange component (24) is slidably installed on the outside of the second slide rod (221). A second spring (222) and a third spring (223) are arranged on both sides of the detection exchange component (24). The second spring (222) and the third spring (223) have the same elastic force.

5. The auxiliary wiring device for a current transformer according to claim 4, characterized in that: The connecting slide plate (215) is fixedly installed on both sides of the first fixing plate (218). The first fixing plate (218) is rotatably installed with a limiting member (23). The limiting member (23) includes a first rotating plate (231) and a second rotating plate (239) rotatably installed on the two first fixing plates (218). The ends of the first rotating plate (231) and the second rotating plate (239) are rotatably connected. A rotating limiting block (232) is rotatably installed on the side of the second rotating plate (239). A rotating fixing block (233) is fixedly installed on the side of the rotating limiting block (232) away from the end of the second rotating plate (239). A third sliding column (234) is slidably installed inside the rotating fixing block (233). A second fixing plate (235) is fixedly installed on the top of the rotating fixing block (233). A fourth spring (236) is fixedly installed on the bottom of the second fixing plate (235). The end of the fourth spring (236) is connected to the top of the third sliding column (234).

6. The auxiliary wiring device for a current transformer according to claim 5, characterized in that: The limiting member (23) includes a third rotating block (238) fixedly installed on the side of the second rotating plate (239), and a second rotating block (237) fixedly installed on the side of the first rotating plate (231). The rotating limiting block (232) has grooves on both sides, so that the ends of the third rotating block (238) and the second rotating block (237) are rotatably connected to the sides of the rotating limiting block (232). The third rotating block (238) and the second rotating block (237) are used to limit the rotating limiting block (232).

7. The auxiliary wiring device for a current transformer according to claim 6, characterized in that: The detection exchange component (24) includes a first exchange plate (242) slidably installed outside the second slide bar (221), a fourth slide bar (241) fixedly installed at the bottom of the first current transformer (1), a second exchange plate (243) fixedly installed inside the first exchange plate (242), a first exchange slide bar (246) slidably installed inside the second exchange plate (243), a third exchange plate (245) and a first exchange slide bar (246) fixedly installed at both ends of the first exchange slide bar (246), a first exchange spring (244) fixedly installed on the side of the third exchange plate (245) and the first exchange slide bar (246), an exchange protrusion (247) fixedly installed at the bottom of the first exchange plate (242), and a first motor (248) disposed inside the exchange protrusion (247).

8. The auxiliary wiring device for a current transformer according to claim 7, characterized in that: The connecting slide plate (215) is made of conductive metal material. The connection position of the connecting slide plate (215) with the connecting rod (214) and the first slide rod (211) is a conductive metal connection. An insulating component is provided between the connection position of the connecting slide plate (215) and the first current transformer (1).

9. The auxiliary wiring device for a current transformer according to claim 8, characterized in that: The maximum distance between the two connecting slide plates (215) is the same as the width of the internal slot of the first transformer (1).

10. The auxiliary wiring device for a current transformer according to claim 9, characterized in that: When the third slide bar (234) descends to its lowest point, the height of the bottom of the third slide bar (234) is lower than the height of the top of the first exchange plate (242).

Images