High voltage AC and DC insulation tester

Abstract

The present invention relates to the technical field of insulation testers, and specifically to high-voltage AC and DC insulation testers, which solve the problem that when performing insulation tests on high-voltage AC and DC equipment or conductors, the detection harness used by the insulation tester does not have an emergency protection function. Once the current inside the detection harness is too large, it will directly cause the insulation tester to fail or be damaged, and even cause personal injury to the staff operating the insulation tester. The high-voltage AC and DC insulation tester includes an insulation tester case, a rotating case cover is rotatably installed on the top of the insulation tester case, a detection wire storage bin is provided inside the insulation tester case, and a plurality of wiring terminals are installed on the upper surface of the insulation tester case. When the current inside the detection harness is overloaded or short-circuited, the present invention urgently disconnects the detection harness to prevent the current from entering the insulation tester along the detection harness, thereby preventing the insulation tester from failing or being damaged.

Description

Technical Field

[0001] The invention relates to the technical field of insulation testers, in particular to a high-voltage AC and DC insulation tester. Background Art

[0002] Insulation tester is also called insulation withstand voltage tester or electrical insulation strength tester or dielectric strength tester. It applies a specified AC or DC high voltage between the live part and the non-live part (usually the shell) of the electrical appliance to check the withstand voltage of the insulation material of the electrical appliance. The insulation tester is suitable for insulation testing in the maintenance, repair, testing and verification of various electrical equipment.

[0003] The insulation tester can also be used to perform insulation tests on high-voltage AC and DC wires. When the insulation tester is testing high-voltage AC and DC wires, it is necessary to directly connect the caliper connected to one end of the detection harness to the high-voltage AC and DC wires, and then connect the other end of the detection harness to the wiring terminal of the insulation tester, and introduce the current in the high-voltage AC and DC wires into the insulation tester to test the insulation performance of the high-voltage AC and DC wires.

[0004] However, when performing insulation testing on high-voltage AC and DC equipment or wires, the detection harness used by the insulation tester does not have an emergency protection function. Once the current inside the detection harness is too large, it will directly cause the insulation tester to fail or be damaged, and even cause personal injury to the staff operating the insulation tester. Therefore, it does not meet the existing needs, and we have proposed a high-voltage AC and DC insulation tester. Summary of the invention

[0005] The purpose of the present invention is to provide a high-voltage AC and DC insulation tester to solve the problem raised in the above-mentioned background technology that when performing insulation testing on high-voltage AC and DC equipment or wires, the detection harness used by the insulation tester does not have an emergency protection function. Once the current inside the detection harness is too large, it will directly cause the insulation tester to malfunction or be damaged, and even cause personal injury to the staff operating the insulation tester.

[0006] To achieve the above object, the present invention provides the following technical solution: a high-voltage AC and DC insulation tester, comprising an insulation tester box, a rotating box cover is rotatably installed on the top of the insulation tester box, a detection line storage bin is provided inside the insulation tester box, a plurality of wiring terminals are installed on the upper surface of the insulation tester box, insulation detection lines are stored inside the detection line storage bin, and the insulation detection lines include DC detection lines and AC detection lines;

[0007] The DC detection line and the AC detection line both include an instrument docking line and a conductive clip, one end of the instrument docking line is fixedly connected to a first spiral telescopic connection line, the other end of the first spiral telescopic connection line is fixedly connected to a first adapter line, the other end of the first adapter line is fixed to a first protection connection line, one end of the conductive clip is fixed to a detection docking line, the other end of the detection docking line is fixed to a second spiral telescopic connection line, the other end of the second spiral telescopic connection line is fixed to a second adapter line, the other end of the second adapter line is fixed to a second protection connection line, a detection protector is installed between the first protection connection line and the second protection connection line, the instrument docking line, the first spiral telescopic connection line, the first adapter line, the second spiral telescopic connection line, the second adapter line and the detection docking line are provided with conductive conductors running through the interior, one end of the instrument docking line is connected to the wiring terminal with a conductive conductor, the first protection connection line is fixedly penetrated with a first detection conductor, the second protection connection line is fixedly penetrated with a second detection conductor, one end of the first detection conductor is fixedly connected to one end of the conductive conductor inside the first adapter line, and one end of the second detection conductor is fixedly connected to one end of the conductive conductor inside the second adapter line.

[0008] Preferably, the detection protector includes an insulating protective shell, and a main control chip, a temperature sensor, a current sensor and an electromagnet are fixedly installed inside the insulating protective shell, the electromagnet is connected to an internal power supply inside the insulation detector, the temperature sensor and the current sensor are electrically connected to the main control chip, one end of the electromagnet is fixed on the inner wall of the insulating protective shell, and the other end of the electromagnet is magnetically adsorbed with an adsorption magnet, an insulating sleeve is fixed on the outside of the adsorption magnet, and a docking conductor is fixed through the inside of the insulating sleeve.

[0009] Preferably, one end of the first detection conductor and the second detection conductor passes through the first adapter wire, the first protective connecting wire and extends to the inside of the insulating protective shell, and a docking groove is provided on one side of the end of the first detection conductor and the second detection conductor located inside the insulating protective shell, and both ends of the docking conductor are bent at ninety degrees and slidably engaged in the docking groove.

[0010] Preferably, a reset sleeve rod is fixed to one side of the insulating sleeve, a fixed guide rod is inserted through the interior of the reset sleeve rod, one end of the fixed guide rod is fixed to the inner wall of the insulating protective shell, and the fixed guide rod is slidably connected to the reset sleeve rod.

[0011] Preferably, the fixed guide rod is T-shaped and is sleeved with a reset spring on the outside; the reset spring is located on the inside of the reset sleeve rod and one end of the reset spring is in contact with the reset sleeve rod.

[0012] Preferably, both ends of the docking conductor are provided with through-going limiting holes, and the ends of the first detection conductor and the second detection conductor provided with docking grooves are provided with positioning holes, and the diameter of the positioning holes is twice the diameter of the limiting holes.

[0013] Preferably, a positioning plug rod is slidably inserted into the inner side of the positioning hole and the limiting hole, one end of the positioning plug rod is provided with a fixing rod, one end of the fixing rod is fixed to the inner wall of the insulating protective shell, one end of the positioning plug rod passes through the fixing rod and is slidably connected to the fixing rod, the end of the positioning plug rod connected to the fixing rod is a straight rod, one-third of the length of the end of the positioning plug rod pointing to the first detection conductor and the second detection conductor is a soft rod, and can be bent and deformed in the hand, and the depth of the end of the positioning plug rod inserted into the limiting hole is one-third to one-half of the depth of the limiting hole.

[0014] Preferably, a square piece is fixed to the outer side of the positioning plug rod, a positioning spring is provided between the square piece and one end of the fixed rod, and the positioning spring is sleeved on the outer side of the end of the positioning plug rod.

[0015] Preferably, a guide plate is fixed to one side of the square sheet, an inclined slope is provided on one end side of the guide plate, and a guide rod is provided on the outer side of the slope.

[0016] Preferably, a support rod is fixed to the top end of the guide rod, and one end of the support rod is fixed to the upper surface of the insulating sleeve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention monitors the temperature and internal current of the docking conductor in real time through the temperature sensor and current sensor inside the insulating protective shell. When the temperature inside the docking conductor is too high or the current inside the docking conductor is overloaded, the power supply of the electromagnet is urgently disconnected, so that the electromagnet loses the magnetic adsorption of the adsorption magnet, and the reset spring drives the reset sleeve rod, the insulating sleeve, and the docking conductor to move and reset. When the reset spring moves, the support rod drives the guide rod to move and reset, so that the guide rod squeezes the guide plate and moves the positioning plug rod toward the fixed rod, separates the end of the positioning plug rod from the limit hole and the positioning hole, separates the end of the docking conductor from the docking groove, and makes the DC detection line or the AC detection line in a disconnected state. The current can no longer continue to flow in the DC detection line or the AC detection line, thereby preventing the overload current from entering the insulation detector along the DC detection line or the AC detection line, and preventing the insulation detector from malfunctioning or being damaged;

[0019] 2. The present invention utilizes a detection protector to connect the first detection conductor and the second detection conductor inside the first adapter wire and the second detection conductor. When using an insulation tester to detect high-voltage AC and DC wires, firstly, the conductive clamp and the conductive conductor at the end of the instrument are connected to the high-voltage wire and the terminal respectively. Then, the staff leaves the insulation tester at a certain distance, starts the insulation tester through a remote control program, and supplies power to the electromagnet. At this time, the electromagnet magnetically adsorbs the adsorption magnet, so that the adsorption magnet drives the docking conductor to move through the insulating sleeve, and clamps the two ends of the docking conductor into the docking grooves at the ends of the first detection conductor and the second detection conductor. During the formal detection of the insulation tester, the staff stays away from the insulation tester. Once the insulation tester fails or is damaged, it will not cause harm to the staff, thereby ensuring the physical and life safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a DC detection line and an AC detection line of the present invention;

[0022] Figure 3 It is a structural schematic diagram of a first spiral telescopic connecting line of the present invention;

[0023] Figure 4 It is a structural schematic diagram of a second spiral telescopic connecting line of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the first detection conductor and the second detection conductor of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the detection protector of the present invention;

[0026] Figure 7 A top view of the internal structure of the insulating protective shell of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the butt-jointed conductor of the present invention;

[0028] Fig. 9 It is a schematic diagram of the connection structure of the reset sleeve rod and the fixed guide rod of the present invention.

[0029] In the figure: 1. Insulation tester box; 2. Rotating box cover; 3. Test line storage compartment; 4. Terminal block; 5. Insulation test line; 5A. DC test line; 5B. AC test line; 501. Instrument docking line; 502. First spiral telescopic connecting line; 503. First transfer line; 504. First protection connecting line; 505. Test protector; 5051. Insulation protection shell; 5052. Main control chip; 5053. Temperature sensor; 5054. Current sensor; 5055. Electromagnet; 5056. Docking conductor; 5057. Adsorption magnet; 5058. Insulation sleeve; 5059 , fixing rod; 50510, positioning plug rod; 50511, positioning spring; 50512, guide plate; 50513, guide rod; 50514, support rod; 50515, limiting hole; 50516, reset sleeve rod; 50517, fixed guide rod; 50518, reset spring; 506, second protective connecting line; 507, second spiral telescopic connecting line; 508, positioning hole; 509, detection docking line; 510, second adapter line; 511, conductive conductor; 512, conductive clip; 513, first detection conductor; 514, second detection conductor; 515, docking groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1 As shown, a high-voltage AC and DC insulation tester is provided, wherein a rotating box cover 2 is rotatably installed above a box body 1 of the insulation tester, a detection line storage bin 3 is provided inside the box body 1 of the insulation tester, a plurality of wiring terminals 4 are installed on the upper surface of the box body 1 of the insulation tester, and insulation detection lines 5 are stored inside the detection line storage bin 3, and the insulation detection lines 5 include a DC detection line 5A and an AC detection line 5B.

[0032] like Figure 2 Only Figure 5As shown, the DC detection line 5A and the AC detection line 5B both include an instrument docking line 501 and a conductive clamp 512, one end of the instrument docking line 501 is fixedly connected to a first spiral telescopic connection line 502, the other end of the first spiral telescopic connection line 502 is fixedly connected to a first adapter line 503, the other end of the first adapter line 503 is fixed to a first protection connection line 504, one end of the conductive clamp 512 is fixed to a detection docking line 509, the other end of the detection docking line 509 is fixed to a second spiral telescopic connection line 507, the other end of the second spiral telescopic connection line 507 is fixed to a second adapter line 510, the other end of the second adapter line 510 is fixed to a second protection connection line 506, a detection protector 505 is installed between the first protection connection line 504 and the second protection connection line 506, the instrument docking line 501, the first spiral telescopic connection line 502, the first adapter line A conductive conductor 511 is provided inside the first and second spiral telescopic connecting wires 503, 507, the second adapter wire 510 and the detection docking wire 509. The conductive conductor 511 at one end of the instrument docking wire 501 is connected to the wiring terminal 4. A first detection conductor 513 is fixedly provided inside the first protection connecting wire 504. A second detection conductor 514 is fixedly provided inside the second protection connecting wire 506. One end of the first detection conductor 513 is fixedly connected to one end of the conductive conductor 511 inside the first adapter wire 503. One end of the second detection conductor 514 is fixedly connected to one end of the conductive conductor 511 inside the second adapter wire 510. By stretching the first spiral telescopic connecting wire 502 and the second spiral telescopic connecting wire 507, the total length of the DC detection wire 5A and the AC detection wire 5B is adjusted, so that the insulation tester can be connected to the high-voltage, AC and DC wires at a high place.

[0033] like Figures 6 to 9As shown, the detection protector 505 includes an insulating protective shell 5051, and a main control chip 5052, a temperature sensor 5053, a current sensor 5054 and an electromagnet 5055 are fixedly installed inside the insulating protective shell 5051. The electromagnet 5055 is connected to the internal power supply of the insulation detector, and the temperature sensor 5053 and the current sensor 5054 are electrically connected to the main control chip 5052. One end of the electromagnet 5055 is fixed on the inner wall of the insulating protective shell 5051, and the other end of the electromagnet 5055 is magnetically adsorbed with an adsorption magnet 5057, and an insulating sleeve 5058 is fixed on the outer side of the adsorption magnet 5057. A docking conductor 5056 is fixed inside the insulating sleeve 5058, and one end of the first detection conductor 513 and the second detection conductor 514 passes through the first adapter line 50 3. The first protective connecting line 504 extends to the inside of the insulating protective shell 5051. A docking groove 515 is provided on one side of the end of the first detection conductor 513 and the second detection conductor 514 located inside the insulating protective shell 5051. Both ends of the docking conductor 5056 are bent at ninety degrees and slidably engaged in the docking groove 515. After the electromagnet 5055 is energized, it magnetically adsorbs the adsorption magnet 5057, so that the adsorption magnet 5057 drives the insulating sleeve 5058 and the docking conductor 5056 to move in the direction of the electromagnet 5055, so that the end of the docking conductor 5056 is inserted into the docking groove 515, connecting the first detection conductor 513 and the second detection conductor 514, so that the current flows smoothly in the DC detection line 5A or the AC detection line 5B and enters the inside of the insulation tester box 1.

[0034] A reset sleeve rod 50516 is fixed to one side of the insulating sleeve 5058, and a fixed guide rod 50517 is inserted into the interior of the reset sleeve rod 50516. One end of the fixed guide rod 50517 is fixed to the inner wall of the insulating protective shell 5051, and the fixed guide rod 50517 is slidably connected to the reset sleeve rod 50516. The fixed guide rod 50517 is T-shaped and has a reset spring 50518 on the outer side. The reset spring 50518 is located on the inner side of the reset sleeve rod 50516 and one end is in contact with the reset sleeve rod 50516. The reset spring 50518 is located between the reset sleeve rod 50516 and the fixed guide rod 50517. When the electromagnet 5055 is powered on to attract the adsorption magnet 5057, causing the insulating sleeve 5058 and the docking conductor 5056 to move, the reset sleeve rod 50516 moves simultaneously with the insulating sleeve 5058 and compresses the reset spring 50518. When the electromagnet 5055 is powered off, the reset spring 50518 elastically recovers and drives the reset sleeve rod 50516, the insulating sleeve 5058 and the docking conductor 5056 to reset, so that the end of the docking conductor 5056 is separated from the first detection conductor 513 and the second detection conductor 514, thereby disconnecting the flow of current inside the DC detection line 5A and the AC detection line 5B.

[0035] The two ends of the docking conductor 5056 are provided with through-limiting holes 50515, the ends of the first detection conductor 513 and the second detection conductor 514 provided with the docking groove 515 are provided with positioning holes 508, the diameter of the positioning hole 508 is twice the diameter of the limiting hole 50515, and the inner sides of the positioning hole 508 and the limiting hole 50515 are slidably plugged with a positioning plug rod 50510, one end of the positioning plug rod 50510 is provided with a fixing rod 5059, one end of the fixing rod 5059 is fixed to the inner wall of the insulating protective shell 5051, one end of the positioning plug rod 50510 passes through the fixing rod 5059 and is slidably connected to the fixing rod 5059, and the positioning plug rod 50510 and the fixing rod 505 The end portion connected with 9 is a straight rod, and one-third of the length of the end portion of the positioning plug rod 50510 pointing to the first detection conductor 513 and the second detection conductor 514 is a soft rod, and can be bent and deformed in the hand. The end portion of the positioning plug rod 50510 is inserted into the limiting hole 50515 to a depth of one-third to one-half of the depth of the limiting hole 50515. The positioning plug rod 50510 is inserted into the positioning hole 508 and the limiting hole 50515 to fix the docking conductor 5056, the first detection conductor 513 and the second detection conductor 514, thereby ensuring that the current is smoothly transmitted and circulated through the first detection conductor 513, the docking conductor 5056 and the second detection conductor 514.

[0036] A square piece is fixed to the outside of the positioning plug rod 50510, and a positioning spring 50511 is provided between the square piece and one end of the fixing rod 5059. The positioning spring 50511 is sleeved on the outside of the end of the positioning plug rod 50510. A guide plate 50512 is fixed to one side of the square piece. An inclined slope is provided on the side of one end of the guide plate 50512, and a guide rod 50513 is provided on the outside of the slope. A support rod 50514 is fixed to the top of the guide rod 50513, and one end of the support rod 50514 is fixed to the upper surface of the insulating sleeve 5058. When the adsorption magnet 5057 loses the magnetic adsorption of the electromagnet 5055 and resets under the elastic action of the reset spring 50518, the insulating sleeve 5058 drives the support rod 50514 and the guide rod 50513 to move simultaneously. At this time, the guide rod 50513 squeezes the inclined surface of the side of the end of the guide plate 50512, so that the guide plate 50512 drives the positioning plug rod 50510 to move toward the detection docking line 509, and the positioning spring 50511 is compressed. At this time, the end of the positioning plug rod 50510 is disengaged from the positioning hole 508 and the limiting hole 50515, so that the end of the docking conductor 5056 is separated from the first detection conductor 513 and the second detection conductor 514, so that the current flowing inside the DC detection line 5A and the AC detection line 5B is disconnected, and when the internal current of the DC detection line 5A and the AC detection line 5B is overloaded and the temperature of the DC detection line 5A and the AC detection line 5B rises, it plays an emergency protection role, thereby avoiding failure or damage of the DC detection line 5A, the AC detection line 5B and the insulation tester.

[0037] Working principle: When using an insulation tester to test the insulation performance of high-voltage AC and DC wires, first select the AC test line 5B or the DC test line 5A to test the high-voltage wire according to whether the current transmitted in the high-voltage wire is AC or DC. After selecting the DC test line 5A or the AC test line 5B, connect the conductive conductor 511 at the end of the instrument docking line 501 with one of the wiring terminals 4 on the surface of the insulation tester box 1, and then clamp the conductive clip 512 at the end of the detection docking line 509 on the outside of the high-voltage wire. After the DC test line 5A or the AC test line 5B for testing is connected, the staff leaves the insulation tester at a certain distance, and then starts the insulation tester through the remote control program. After the insulation tester is powered on, the electromagnet 5055 located inside the insulating protective shell 5051 is powered on and magnetically adsorbs the adsorption magnet 5057. The adsorption magnet 5057 drives the insulating sleeve 5058 and the docking conductor 5056 to move toward the electromagnet 5055 until the adsorption magnet 5057 contacts the electromagnet 5055.

[0038] At this time, the two ends of the docking conductor 5056 are inserted into the inner side of the docking groove 515 at the ends of the first detection conductor 513 and the second detection conductor 514, and the docking conductor 5056 drives the reset sleeve rod 50516 to slide on the outer side of the fixed guide rod 50517 and compress the reset spring 50518. At the same time, during the movement of the docking conductor 5056, the insulating sleeve 5058 drives the guide rod 50513 to move through the support rod 50514, so that the guide rod 50513 gradually moves away from the positioning plug rod 50510. At this time, the guide rod The pressure of 50513 on the guide plate 50512 is reduced, and the positioning spring 50511 compressed between the positioning plug rod 50510 and the fixing rod 5059 gradually recovers elastically. The positioning spring 50511 drives the positioning plug rod 50510 to approach the ends of the first detection conductor 513 and the second detection conductor 514. When the adsorption magnet 5057 contacts the electromagnet 5055, the end of the positioning plug rod 50510 passes through the positioning hole 508 and is plugged into the inner side of the limiting hole 50515 at the end of the docking conductor 5056.

[0039] At this time, the docking conductor 5056 connects the first detection conductor 513 with the second detection conductor 514, and the current on the plateau wire enters the detection docking wire 509, the second spiral telescopic connecting wire 507, and the conductive conductor 511 inside the second adapter wire 510 along the conductive clamp 512, and transmits the current to the second detection conductor 514 through the conductive conductor 511. The current follows the second detection conductor 514, the docking conductor 5056 and the first detection conductor 513, and enters the conductive conductor 511 inside the first adapter wire 503, the first spiral telescopic connecting wire 502 and the instrument docking wire 501. Finally, the current follows the conductive conductor 511 into the insulation tester, and the insulation tester detects the insulation performance of the high-voltage wire.

[0040] During the detection process, the temperature sensor 5053 and the current sensor 5054 inside the insulating protective shell 5051 always detect the current size and the temperature of the docking conductor 5056. When the temperature of the docking conductor 5056 is too high or the current inside the docking conductor 5056 is overloaded, the temperature sensor 5053 and the current sensor 5054 feedback the detection data to the main control chip 5052, and the current sensor 5054 transmits the detection data to the insulation detector. After receiving the signal, the insulation detector cuts off the power supply of the electromagnet 5055. At this time, the electromagnet 5055 loses the magnetic attraction to the adsorption magnet 5057, and the reset spring 50518 performs elastic recovery and drives the reset sleeve rod 50516 to slide on the outside of the fixed guide rod 50517, and the insulating sleeve 5058 drives the docking conductor 5056 to move;

[0041] When the insulating sleeve 5058 moves, the guide rod 50513 is driven to move through the support rod 50514, so that the guide rod 50513 squeezes the main control chip 5052, so that the guide plate 50512 drives the positioning plug rod 50510 to move toward the fixed rod 5059 and compresses the positioning spring 50511. At this time, since the diameter of the limiting hole 50515 is larger than the diameter of the positioning hole 508, and the positioning plug rod 50510 is inserted into the limiting hole 50515 and the end of the positioning hole 508 is a soft rod, before or when the end of the docking conductor 5056 contacts the positioning plug rod 50510, the positioning plug rod 50510 first detaches from the limiting hole 50515 and enters the positioning hole 508, or the positioning plug rod 50510 is inserted into the limiting hole 50515. The end of the positioning plug-in rod 50510 is squeezed and deformed and continues to slide outward on the inner side of the positioning hole 508, which does not affect the separation of the docking conductor 5056 from the docking groove 515. As the docking conductor 5056 and the insulating sleeve 5058 continue to move, the positioning plug-in rod 50510 will be completely separated from the positioning hole 508. At this time, the docking conductor 5056 is completely separated from the first detection conductor 513 and the second detection conductor 514, so that the DC detection line 5A or the AC detection line 5B is in a disconnected state, and the current can no longer continue to flow in the DC detection line 5A or the AC detection line 5B, thereby preventing overload current from entering the insulation tester along the DC detection line 5A or the AC detection line 5B, thereby preventing the insulation tester from malfunctioning or being damaged.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high voltage AC and DC insulation tester, comprising an insulation tester housing (1), characterized in that: A rotating case cover (2) is rotatably mounted above the insulation tester case (1); a detection line storage compartment (3) is provided inside the insulation tester case (1); a plurality of wiring terminals (4) are mounted on the upper surface of the insulation tester case (1); insulation test lines (5) are stored inside the detection line storage compartment (3); the insulation test lines (5) include a DC test line (5A) and an AC test line (5B); The DC detection line (5A) and the AC detection line (5B) both comprise an instrument docking line (501) and a conductive clamp (512); one end of the instrument docking line (501) is fixedly connected to a first spiral telescopic connection line (502); the other end of the first spiral telescopic connection line (502) is fixedly connected to a first adapter line (503); the other end of the first adapter line (503) is fixedly connected to a first protection connection line (504); one end of the conductive clamp (512) is fixedly connected to a detection docking line (509); the other end of the detection docking line (509) is fixedly connected to a second spiral telescopic connection line (507); the other end of the second spiral telescopic connection line (507) is fixedly connected to a second adapter line (510); the other end of the second adapter line (510) is fixedly connected to a second protection connection line (506); the first protection connection line (504) and the second protection connection line (506) are connected to each other. A detection protector (505) is installed between the two terminals; a conductive conductor (511) is provided inside the instrument docking wire (501), the first spiral telescopic connecting wire (502), the first adapter wire (503), the second spiral telescopic connecting wire (507), the second adapter wire (510) and the detection docking wire (509); one end of the instrument docking wire (501) is connected to the wiring terminal (4) through the conductive conductor (511); the first detection conductor (513) is fixedly provided inside the first protection connecting wire (504); the second detection conductor (514) is fixedly provided inside the second protection connecting wire (506); one end of the first detection conductor (513) is fixedly connected to one end of the conductive conductor (511) inside the first adapter wire (503); and one end of the second detection conductor (514) is fixedly connected to one end of the conductive conductor (511) inside the second adapter wire (510); The detection protector (505) comprises an insulating protective shell (5051), wherein a main control chip (5052), a temperature sensor (5053), a current sensor (5054) and an electromagnet (5055) are fixedly installed inside the insulating protective shell (5051), wherein the electromagnet (5055) is connected to an internal power supply of the insulation detector, and the temperature sensor (5053) and the current sensor (5054) are electrically connected to the main control chip (5052), wherein one end of the electromagnet (5055) is fixed to the inner wall of the insulating protective shell (5051), and an adsorption magnet (5057) is magnetically adsorbed to the other end of the electromagnet (5055), an insulating sleeve (5058) is fixed to the outside of the adsorption magnet (5057), and a docking conductor (5056) is fixed through the inside of the insulating sleeve (5058).

2. The high voltage AC and DC insulation tester according to claim 1, characterized in that: One end of the first detection conductor (513) and the second detection conductor (514) passes through the first adapter wire (503) and the first protection connection wire (504) and extends into the interior of the insulating protective shell (5051); a docking groove (515) is provided on one side of the end of the first detection conductor (513) and the second detection conductor (514) located inside the insulating protective shell (5051); and both ends of the docking conductor (5056) are bent at ninety degrees and are slidably engaged in the docking groove (515).

3. The high voltage AC and DC insulation tester according to claim 2, characterized in that: A reset sleeve rod (50516) is fixed to one side of the insulating sleeve (5058), a fixed guide rod (50517) is inserted through the interior of the reset sleeve rod (50516), one end of the fixed guide rod (50517) is fixed to the inner wall of the insulating protective shell (5051), and the fixed guide rod (50517) is slidably connected to the reset sleeve rod (50516).

4. The high voltage AC and DC insulation tester according to claim 3, characterized in that: The fixed guide rod (50517) is T-shaped and has a return spring (50518) sleeved on the outside. The return spring (50518) is located on the inside of the return sleeve rod (50516) and one end of the return spring is in contact with the return sleeve rod (50516).

5. The high voltage AC and DC insulation tester according to claim 2, characterized in that: Both ends of the docking conductor (5056) are provided with through-going limiting holes (50515); the ends of the first detection conductor (513) and the second detection conductor (514) provided with the docking groove (515) are provided with positioning holes (508); the diameter of the positioning hole (508) is twice the diameter of the limiting hole (50515).

6. The high voltage AC and DC insulation tester according to claim 5, characterized in that: A positioning plug rod (50510) is slidably inserted into the inner side of the positioning hole (508) and the limiting hole (50515); one end of the positioning plug rod (50510) is provided with a fixing rod (5059); one end of the fixing rod (5059) is fixed to the inner wall of the insulating protective shell (5051); one end of the positioning plug rod (50510) passes through the fixing rod (5059) and is slidably connected to the fixing rod (5059); the end of the positioning plug rod (50510) connected to the fixing rod (5059) is a straight rod; one third of the length of the end of the positioning plug rod (50510) pointing to the first detection conductor (513) and the second detection conductor (514) is a soft rod and can be bent and deformed in the hand; the depth of the end of the positioning plug rod (50510) inserted into the limiting hole (50515) is one third to one half of the depth of the limiting hole (50515).

7. The high voltage AC and DC insulation tester according to claim 6, characterized in that: A square piece is fixed to the outside of the positioning plug rod (50510), and a positioning spring (50511) is provided between the square piece and one end of the fixing rod (5059), and the positioning spring (50511) is sleeved on the outside of the end of the positioning plug rod (50510).

8. The high voltage AC and DC insulation tester according to claim 7, characterized in that: A guide plate (50512) is fixed to one side of the square plate, and an inclined slope is provided on one end side of the guide plate (50512), and a guide rod (50513) is provided on the outer side of the inclined surface.

9. The high voltage AC and DC insulation tester according to claim 8, characterized in that: A support rod (50514) is fixed to the top end of the guide rod (50513), and one end of the support rod (50514) is fixed to the upper surface of the insulating sleeve (5058).

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