Clamping device for current transformer rise current

Abstract

The application relates to the technical field of current transformer current boosting devices, in particular to a clamping device for current transformer current boosting, which comprises a sleeve, a sleeve joint hole for sleeving a joint bolt is arranged through the left side of the sleeve; a probe sliding hole penetrating through the left-right direction is arranged on the side wall of the sleeve, a contact probe is slidably connected in the probe sliding hole; a rotating disc capable of pushing the end of the contact probe out of the probe sliding hole and locking the position of the contact probe is connected to the right side of the sleeve; a fixed tooth groove is arranged on the inner side wall of the sleeve, the fixed tooth groove is communicated with the sleeve joint hole, and a fixed tooth is rotatably connected in the fixed tooth groove; the fixed tooth can be completely rotated into the fixed tooth groove or rotated to extend into the sleeve joint hole; a poking device for poking the fixed tooth to rotate is further connected to the sleeve; the clamping device for current transformer current boosting of the application cannot cause the problem of wire falling after being connected; the device is small and suitable for the narrow space of a centrally installed cabinet and suitable for almost all centrally installed cabinets.

Description

Technical Field

[0001] This invention relates to the technical field of current transformer current boosting devices, specifically a clamping device for current transformer current boosting. Background Technology

[0002] In substations, 10kV and 35kV medium-voltage switchgear are widely used. When a new line is introduced or the protection system is verified, a current boosting test is required. This involves passing current through the current transformer at the switchgear's outgoing line to simulate actual operating conditions and test the sampling and operation of the protection device. This work presents significant challenges. First, the busbars at the outgoing line are all insulated, with only the bolts at the current transformer connectors exposed. Second, traditional current boosting equipment clamps are difficult to hold the bolts at the current transformer connectors. In addition, the large current boosting current makes it easy for the wiring to come loose, leading to test failure or even instrument malfunction. Summary of the Invention

[0003] The main objective of this invention is to provide a clamping device for current transformer current boosting, so as to solve the problem in the prior art that the clamps of current boosting equipment are difficult to clamp the joint bolts at the current transformer, and the wiring is easy to fall off, causing test failure or even instrument failure.

[0004] To achieve the above objectives, the present invention provides a clamping device for current transformer current boosting, comprising a sleeve, wherein a socket hole for connecting a connector bolt is provided inside the sleeve through its left side; a probe sliding hole through the left and right directions is provided on the side wall of the sleeve, and a contact probe is slidably connected in the probe sliding hole; a rotating disk is connected to the right side of the sleeve, which can push the end of the contact probe out of the probe sliding hole and lock the position of the contact probe; a fixing groove is provided on the inner side wall of the sleeve, the fixing groove communicating with the socket hole, and a fixing tooth is rotatably connected in the fixing groove; when the fixing tooth rotates, it can be completely rotated into the fixing groove, or it can be rotated to extend the fixing tooth into the socket hole; a turning device for turning the fixing tooth is also connected to the sleeve.

[0005] Furthermore, the actuating device includes an actuating rod, and an actuating rod hole is provided on the side wall of the sleeve, which extends through the left side of the sleeve; the actuating rod is movably connected in the actuating rod hole, and an actuating groove is provided on the left side of the actuating rod; a lug is provided on the fixing tooth, and the lug is movably connected in the actuating groove.

[0006] Furthermore, a gripping spring is provided in the middle of the actuating lever, and the actuating lever hole passes through the right side of the sleeve; a fixed adjusting bolt is threaded to the right end of the actuating lever hole, and an actuating lever return spring is movably connected inside the actuating lever hole, with the actuating lever return spring located between the fixed adjusting bolt and the actuating lever.

[0007] Furthermore, the sleeve has a rotating disk movable hole extending through its right side, and the rotating disk is slidably connected to the rotating disk movable hole; the right end of the rotating disk is a right plate, the outer diameter of which is greater than or equal to the outer diameter of the sleeve; multiple movable hole magnets are arranged circumferentially inside the rotating disk movable hole, and the magnetic poles at the right ends of adjacent movable hole magnets are opposite; multiple rotating disk magnets are arranged circumferentially on the left end of the rotating disk, and the magnetic poles at the left ends of adjacent rotating disk magnets are opposite; the number of rotating disk magnets is the same as the number of movable hole magnets, and the positions of the rotating disk magnets and the movable hole magnets are opposite.

[0008] Furthermore, the rotating disk includes a central shaft, a left shaft fixedly connected to the left end of the central shaft, and a right plate fixedly connected to the right end of the central shaft; the left shaft is slidably connected to the rotating disk's movable hole, and the outer diameter of the central shaft is smaller than the outer diameter of the left shaft; the right end of the inner wall of the rotating disk's movable hole is fixedly connected to an anti-slip protruding shaft to prevent the rotating disk from sliding out of the rotating disk's movable hole.

[0009] Furthermore, a rotating disk return spring is provided between the bottom of the rotating disk and the rotating disk movable hole.

[0010] Furthermore, a probe guide plate and a lever guide plate are fixedly connected to the side wall of the sleeve. The probe guide plate is in contact with the contact probe, and the lever guide plate is in contact with the lever. Lead wires are connected to the probe guide plate and the lever guide plate.

[0011] Furthermore, a stabilizing spring is fixedly connected to the bottom of the socket, and an adsorption magnet is fixedly connected to the other end of the stabilizing spring. A limit rope is connected between the adsorption magnet and the bottom of the socket.

[0012] Furthermore, a thin shaft is provided in the middle of the contact probe, and a probe recovery spring is sleeved on the outside of the thin shaft; the left end of the probe recovery spring is fixedly connected to the probe sliding hole, and the right end is fixedly connected to the thin shaft.

[0013] Furthermore, a probe clamping spring is provided in the middle of the contact probe; a pointed tip is provided at the left end of the contact probe.

[0014] The beneficial effects of this invention are:

[0015] The clamping device for current transformer current boosting will not cause the wiring to fall off after connection; the device is compact and suitable for the narrow space of the central switch cabinet, and is highly practical and compatible with almost all central switch cabinets; the device is easy to operate, just put it on and push the back, and it is also very easy to take off, just rotate the tail of the device and pull it out.

[0016] By setting a probe and connecting it to the busbar copper bus, which in turn connects to the current transformer, the connection between the probe and the current transformer is achieved. By setting a fixing tooth, the sleeve and the connector bolt can be locked together. The connection between the sleeve and the fixing tooth and the connector bolt is relatively tight, preventing the wiring from falling off, causing test failure or even instrument malfunction. By setting a lead wire, it is used to connect to the current boosting device.

[0017] By setting a rotating disk, the contact probe and the actuating rod can be pushed and their positions locked; by setting a biting spring, a locking force can be provided for the fixing teeth; by setting a probe clamping spring, a clamping force can be provided for the contact probe.

[0018] By incorporating a movable hole magnet, a rotating disk magnet, and a rotating disk return spring, the rotating disk can be quickly locked and opened.

[0019] By incorporating an adsorption magnet, the bolts can be attracted when they are made of ferromagnetic material, thus enhancing the stability of the connection between the sleeve and the bolts. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is a schematic diagram of the clamping device for current transformer current boosting in the embodiment;

[0022] Figure 2 This is a schematic diagram of the structure at the point where the lead wire is extended in the embodiment;

[0023] Figure 3 This is a schematic diagram of the structure for fixing the occlusal state in the embodiment;

[0024] Figure 4 This is a schematic diagram of the structure in the loosened state of the fixed tooth in the embodiment;

[0025] Figure 5 This is a schematic diagram showing the distribution of the magnets on the rotating disk in the embodiment;

[0026] Figure 6 This is a schematic diagram showing the distribution of the movable hole magnets in the embodiment;

[0027] Figure 7 This is a schematic diagram showing the distribution of the probe sliding hole and the actuating rod hole in the embodiment;

[0028] Figure 8 This is a schematic diagram showing the usage state of the clamping device for current transformer current boosting in the embodiment;

[0029] Figure 9This is a schematic diagram of the connection status of the current riser device fixture in the prior art.

[0030] In the diagram: 1. Sleeve; 101. Probe sliding hole; 102. Fixed tooth groove; 103. Socket hole; 104. Actuating rod hole; 105. Rotating disk movable hole; 106. Baffle; 107. Baffle bolt; 2. Contact probe; 201. Thin shaft; 202. Pointed tip; 203. Probe clamping spring; 3. Rotating disk; 301. Central shaft; 302. Left shaft; 303. Right plate; 304. Rotating disk magnet; 4. Fixed tooth; 401. Lug; 402. Fixed tooth shaft; 5. Actuating rod; 501. Actuating groove 502. Biting spring; 6. Fixing adjusting bolt; 7. Toggle lever return spring; 8. Movable hole magnet; 9. Anti-slip protruding shaft; 10. Probe guide plate; 11. Lead-out wire; 1101. Wire clamp; 12. Stabilizing spring; 13. Adsorption magnet; 14. Limiting pull rope; 15. Probe return spring; 16. Rotating disk return spring; 17. Toggle lever guide plate; 18. Busbar copper busbar; 19. Current booster device; 1901. Current booster device clamp; 20. Connecting bolt; 21. Busbar; 22. Current transformer. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] like Figures 1-4 , Figure 7 As shown, according to an embodiment of the present invention, a clamping device for current transformer current boosting is provided, including a sleeve 1. The sleeve 1 has a through-hole 103 on its left side for connecting a connector bolt. The shape of the through-hole 103 matches the shape of the connector bolt to be connected, and can have various shapes to match different connector bolts. The side wall of the sleeve 1 has four probe sliding holes 101 extending in the left-right direction. Two probe sliding holes 101 are grouped together and located on both sides of the sleeve 1. Contact probes 2 are slidably connected within the probe sliding holes 101. The contact probes 2 are made of conductive metal such as brass and are used to extend from the probe sliding holes 101 to contact the busbar copper busbar. The copper busbar is connected to the current transformer, thus realizing the connection between the probe and the current transformer; the right side of the sleeve 1 is connected to a rotating disk 3 that can push the end of the contact probe 2 out of the probe sliding hole 101 and lock the position of the contact probe 2; the inner side wall of the sleeve 1 is provided with two oppositely arranged fixed tooth grooves 102, the fixed tooth grooves 102 are connected to the socket hole 103, and the fixed tooth grooves 102 are rotatably connected to the fixed tooth 4 through the fixed tooth rotating shaft 402; when the fixed tooth 4 rotates, it can be completely rotated into the fixed tooth groove 102 to achieve the loose state; it can also be rotated to insert the fixed tooth 4 into the socket hole 103 to achieve the biting state; the sleeve 1 is also connected to a turning device for turning the fixed tooth 4.

[0033] like Figure 1 and Figure 4 As shown, the actuating device includes an actuating rod 5. The sleeve 1 has an actuating rod hole 104 on its side wall, which passes through the left side of the sleeve 1. The actuating rod 5 is movably connected in the actuating rod hole 104, and an actuating groove 501 is provided on the left side of the actuating rod 5. The fixed tooth 4 has a lug 401, which is movably connected in the actuating groove 501. When the actuating groove 501 slides left and right, it will touch the lug 401, causing the fixed tooth 4 to rotate, thereby achieving a biting or releasing state.

[0034] like Figure 1 and Figure 4 As shown, a gripping spring 502 is provided in the middle of the actuating lever 5, and the actuating lever hole 104 passes through the right side of the sleeve 1; by providing the gripping spring 502, a locking force can be provided for the fixing tooth 4; a fixing adjusting bolt 6 is threaded to the right end of the actuating lever hole 104, and an actuating lever return spring 7 is movably connected inside the actuating lever hole 104, and the actuating lever return spring 7 is located between the fixing adjusting bolt 6 and the actuating lever 5; the actuating lever return spring 7 is used to push the actuating lever 5 back to its original position, and the fixing adjusting bolt 6 is used to adjust the force of the actuating lever return spring 7, and at the same time plays a limiting role.

[0035] like Figure 1 , Figure 5 , Figure 6 As shown, the sleeve 1 has a rotating disk movable hole 105 extending through its right side. The rotating disk movable hole 105 is separated from the sleeve hole 103 by a baffle 106, which is fixedly connected to the sleeve by a baffle bolt 107. The rotating disk 3 is slidably connected to the rotating disk movable hole 105. The right end of the rotating disk 3 is a right plate 303, the outer diameter of which is greater than or equal to the outer diameter of the sleeve 1. The right plate 303 is a circular plate with uniformly spaced grooves on its edge to increase friction. Eight movable hole magnets 8 are arranged circumferentially inside the rotating disk movable hole 105, with opposite magnetic poles at the right ends of adjacent movable hole magnets 8. Multiple rotating disk magnets 304 are arranged circumferentially on the left end of the rotating disk 3. The magnetic poles at the left ends of adjacent rotating disk magnets 304 are opposite; the number of rotating disk magnets 304 is the same as the number of movable hole magnets 8, and the positions of the rotating disk magnets 304 and the movable hole magnets 8 are opposite; the rotating disk can push the contact probe and the actuating rod, and lock the positions of the contact probe and the actuating rod; the rotating disk 304 can rotate, and when the rotating disk magnets 304 and the movable hole magnets 8 are opposite poles, the movable hole magnets 8 and the rotating disk magnets 304 repel each other, and the rotating disk 3 pops out; when the rotating disk magnets 304 and the movable hole magnets 8 are opposite poles, the rotating disk magnets 304 and the movable hole magnets 8 attract each other, which can realize the rapid locking and unlocking of the rotating disk.

[0036] like Figure 1As shown, the rotating disk 3 includes a central shaft 301, a left shaft 302 fixedly connected to the left end of the central shaft 301, and a right plate 303 fixedly connected to the right end of the central shaft 301; the left shaft 302 is slidably connected to the rotating disk movable hole 105, and the outer diameter of the central shaft 301 is smaller than the outer diameter of the left shaft 302; the right end of the inner side wall of the rotating disk movable hole 105 is fixedly connected to an anti-slip protruding shaft 9 to prevent the rotating disk 3 from sliding out of the rotating disk movable hole 105.

[0037] like Figure 1 As shown, a rotating disk return spring 16 is provided between the bottom of the rotating disk 3 and the rotating disk movable hole 105; the rotating disk return spring 16 is located inside the rotating disk movable hole 105 and is used to fix the rotating disk 3 in the right non-working position when it is not working.

[0038] like Figure 1 and Figure 2 As shown, a probe guide plate 10 and a lever guide plate 17 are fixedly connected to the side wall of the sleeve 1. The probe guide plate 10 is in contact with the contact probe 2 but does not affect the sliding of the contact probe 2. The lever guide plate 17 is in contact with the lever 5 but does not affect the sliding of the lever. One end of the lead wire 11 is connected to the probe guide plate 10 and the lever guide plate 17. The other end of the lead wire 11 is connected to a wire clamp 1101 for connecting with the clamp of the current boosting device.

[0039] like Figure 1 As shown, a stabilizing spring 12 is fixedly connected to one end of the bottom of the socket 103, and an adsorption magnet 13 is fixedly connected to the other end of the stabilizing spring 12. The adsorption magnet 13 is located inside the socket 103. A limiting rope 14 is connected between the adsorption magnet 13 and the bottom of the socket 103. By setting the adsorption magnet, when the joint bolt is made of ferromagnetic material, the joint bolt can be attracted, thereby enhancing the stability of the connection between the sleeve and the joint bolt. The stabilizing spring 12 is used to fix the adsorption magnet 13 and stabilize its position. The limiting rope 14 serves to limit the position of the adsorption magnet 13.

[0040] like Figure 1 As shown, a thin shaft 201 is provided in the middle of the contact probe 2, and a probe return spring 15 is sleeved on the outside of the thin shaft 201; the left end of the probe return spring 15 is fixedly connected to the probe sliding hole 101, and the right end is fixedly connected to the thin shaft 201; the function of the probe return spring 15 is to spring the contact probe 2 back into the interior when the clamping device is not in working state, so as to prevent damage to the contact probe 2 and prevent injury to people.

[0041] like Figure 1 As shown, a probe clamping spring 203 is provided in the middle of the contact probe 2, which plays the role of buffering the applied force; a pointed tip 202 is provided at the left end of the contact probe 2.

[0042] like Figure 8The diagram shows the usage state of the clamping device for current transformer boosting in this embodiment. The L1 and L2 terminals on the primary side of the current transformer 22 are both connected to the busbar copper busbar 18 via connector bolts 20, and the busbar copper busbar 18 is then connected to the busbar. The lead wire 11 is connected to the current boosting device clamp of the current boosting device 19 via the sleeve 1 and connector bolts 20, thus completing the connection between the current transformer and the current boosting device. The specific connection steps are as follows:

[0043] Determine the size of the connector bolt 20, and then find a clamping device that matches the size of the connector bolt 20;

[0044] First, put the sleeve 1 into the head of the connector bolt 20. If the connector bolt 20 is made of ferromagnetic material, the device will guide the bolt under the action of the internal adsorption magnet 13. Once the position is correct, it will be attracted to the bolt.

[0045] When the rotating disk 3 is pushed in, under the magnetic force of the rotating disk magnet 304 and the movable hole magnet 8, the rotating disk 3 will automatically rotate and align, realizing the automatic ferromagnetic adsorption of SN; the rotating disk 3 will be firmly sucked in.

[0046] When the rotating disk 3 is firmly sucked in, it will push the actuating rod 5 in, thereby pushing the actuating groove 501 on the actuating rod 5 to rotate the fixing tooth 4. The fixing tooth 4 will protrude from the inside of the sleeve 1 and bite into the side of the connector bolt 20. According to the distance sucked in by the rotating disk 3, the biting spring 502 will provide a firm biting force, thereby firmly biting the connector bolt 20.

[0047] As the rotating disk 3 is firmly sucked in, it will push out the end of the contact probe 2. When the contact probe 2 contacts the busbar copper bus 18, the fixing teeth 4 have already firmly engaged the connector bolt 20. When the rotating disk 3 continues to suck in, the contact probe 2 will be tightly in contact with the busbar copper bus 18 under the action of the probe clamping spring 203. Since the busbar copper bus 18 is in close contact with the primary terminal of the current transformer 22, the lead wire 11 can be connected to the current transformer 22.

[0048] Connect the current booster clamps on the two measuring leads of the current booster device 19 to the clamps 1101 of the lead wire 11 to provide the measuring current. The current can then flow through the primary terminal of the current transformer 22 to realize the current booster test of the current transformer 22.

[0049] After use, rotate the rotating disk 3. As the magnetic force between the rotating disk magnet 304 and the movable hole magnet 8 changes from the original attraction between opposite poles to the repulsion between like poles, and with the action of the rotating disk return spring 16, the rotating disk 3 will automatically pop out.

[0050] After the rotating disk 3 pops out, the contact probe 2 loses its thrust. Under the action of the probe recovery spring 15, the contact probe 2 retracts into the sleeve 1 and loses contact.

[0051] After the rotating disk 3 pops out, the actuating rod 5 loses its pushing force, the biting spring 502 returns to its original state, the fixed tooth 4 loses its biting force, and under the action of the actuating rod return spring 7, the fixed tooth 4 is rotated and retracted into the fixed tooth groove 102, losing its engagement with the connector bolt 20.

[0052] At this point, overcome the attraction of the magnet 13 and pull out the sleeve 1 to retrieve the clamping device.

[0053] like Figure 9 The diagram shows the connection between the current boosting device and the current transformer in the prior art. The current transformer 22 is connected to the busbar 21 through the connector bolt 20. The current boosting device clamp 1901 of the current boosting device 19 is directly clamped to the head of the connector bolt 20. The wiring is prone to falling off, causing test failure or even instrument malfunction.

[0054] This embodiment achieves the connection between the probe and the current transformer by setting a probe that connects to the busbar copper bus, which in turn connects to the current transformer. By setting a fixing tooth, the sleeve and the connector bolt can be locked together. The connection between the sleeve and the fixing tooth and the connector bolt is relatively tight, preventing the wiring from falling off, causing test failure or even instrument malfunction. A lead wire is set for connection with the current boosting device.

[0055] The clamping device for current transformer current boosting in this embodiment will not cause the wiring to fall off after connection; the device is small and suitable for the narrow space of the central cabinet, and is highly practical and compatible with almost all central cabinets; the device is easy to operate, just put it on and push the back, and it is also very easy to take it out, just rotate the tail of the device and pull it out.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A clamping device for current transformer current boosting, characterized in that, The sleeve (1) includes a socket (103) with a through hole (103) on its left side for connecting a bolt; a probe sliding hole (101) with a through direction (101) on the side wall of the sleeve (1) and a contact probe (2) slidably connected in the probe sliding hole (101); a rotating disk (3) connected to the right side of the sleeve (1) to push the end of the contact probe (2) out of the probe sliding hole (101) and lock the position of the contact probe (2); a fixing groove (102) is provided on the inner side wall of the sleeve (1) and communicates with the socket (103); a fixing tooth (4) is rotatably connected in the fixing groove (102); the fixing tooth (4) can be completely rotated into the fixing groove (102) or rotated to extend into the socket (103); the sleeve (1) is also connected to a turning device for turning the fixing tooth (4). The actuating device includes an actuating rod (5), and the sleeve (1) has an actuating rod hole (104) on its side wall, which penetrates the left side of the sleeve (1). The actuating rod (5) is movably connected in the actuating rod hole (104), and an actuating groove (501) is provided on the left side of the actuating rod (5). The fixing tooth (4) has a lug (401) which is movably connected in the actuating groove (501). A gripping spring (502) is provided in the middle of the actuating rod (5), and the actuating rod hole (104) passes through the right side of the sleeve (1); a fixing adjusting bolt (6) is threaded to the right end of the actuating rod hole (104), and an actuating rod return spring (7) is movably connected in the actuating rod hole (104), and the actuating rod return spring (7) is located between the fixing adjusting bolt (6) and the actuating rod (5).

2. The clamping device for current transformer current boosting as described in claim 1, characterized in that, The sleeve (1) has a rotating disk movable hole (105) that runs through its right side. The rotating disk (3) is slidably connected to the rotating disk movable hole (105). The right end of the rotating disk (3) is a right plate (303), and the outer diameter of the right plate (303) is greater than or equal to the outer diameter of the sleeve (1). The rotating disk movable hole (105) has multiple movable hole magnets (8) arranged circumferentially inside. The magnetic poles at the right ends of adjacent movable hole magnets (8) are opposite. The left end of the rotating disk (3) has multiple rotating disk magnets (304) arranged circumferentially. The magnetic poles at the left ends of adjacent rotating disk magnets (304) are opposite. The number of rotating disk magnets (304) is the same as the number of movable hole magnets (8), and the position of the rotating disk magnets (304) is opposite to the position of the movable hole magnets (8).

3. The clamping device for current transformer current boosting as described in claim 2, characterized in that, The rotating disk (3) includes a central shaft (301), a left shaft (302) fixedly connected to the left end of the central shaft (301), and a right plate (303) fixedly connected to the right end of the central shaft (301); the left shaft (302) is slidably connected to the rotating disk movable hole (105), and the outer diameter of the central shaft (301) is smaller than the outer diameter of the left shaft (302); the right end of the inner sidewall of the rotating disk movable hole (105) is fixedly connected to an anti-slip protruding shaft (9) to prevent the rotating disk (3) from sliding out of the rotating disk movable hole (105).

4. The clamping device for current transformer current boosting as described in claim 3, characterized in that, A rotating disk return spring (16) is provided between the bottom of the rotating disk (3) and the rotating disk movable hole (105).

5. The clamping device for current transformer current boosting as described in claim 1, characterized in that, The sleeve (1) has a probe guide plate (10) and a toggle rod guide plate (17) fixedly connected to its side wall. The probe guide plate (10) is in contact with the contact probe (2), and the toggle rod guide plate (17) is in contact with the toggle rod (5). The probe guide plate (10) and the toggle rod guide plate (17) are connected to lead wires (11).

6. The clamping device for current transformer current boosting as described in claim 1, characterized in that, One end of a stabilizing spring (12) is fixedly connected to the bottom of the socket (103), and the other end of the stabilizing spring (12) is fixedly connected to an adsorption magnet (13). A limit rope (14) is connected between the adsorption magnet (13) and the bottom of the socket (103).

7. The clamping device for current transformer current boosting as described in claim 1, characterized in that, The contact probe (2) has a thin shaft (201) in the middle, and a probe recovery spring (15) is sleeved on the outside of the thin shaft (201); the left end of the probe recovery spring (15) is fixedly connected to the probe sliding hole (101), and the right end is fixedly connected to the thin shaft (201).

8. The clamping device for current transformer current boosting as described in claim 7, characterized in that, The contact probe (2) is provided with a probe clamping spring (203) in the middle; the left end of the contact probe (2) is provided with a pointed tip (202).

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