Totally insulated detachable post-type intelligent arrester

Abstract

A detachable support type intelligent lightning arrester device, comprising a connecting plate, a busbar, a wiring terminal, a static electricity testing grounding rod, an open-close type static electricity testing grounding rod cover, an insulation shield, an insulation wire, a light insulation cavity, an upper contact sheet, an upper contact, an upper insulation waterproof piston ring, an arrester body, a lower insulation waterproof piston ring, an open type contact ring, an open type contact sheet fixing ring, a contact sheet, an open type elastic tension spring, a lead-out type mounting bracket, a sealing ring, a monitoring device, a disconnector, a metal connecting rod, an isolation insulation shield and the like. Mainly applied to overvoltage protection at the end of line equipment, real-time monitoring of the faults of the lightning arrester and the disconnector and sending of a message to the mobile phone of the operation and maintenance personnel, display of fault position, lightning strike times and leakage current and the like information; due to the prevention of electromagnetic induction, the arrester body and the disconnector can be operated with the live working tool or disassembled by using the operating rod, fast plug-in maintenance and replacement are carried out, many inconveniences caused by power failure are reduced, and the maintenance and maintenance efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of research and development of live working intelligent arrester, in particular to a detachable pole type intelligent arrester device BACKGROUND

[0002] At present, the arrester on overhead distribution line is installed on the outdoor line cross arm, and the HY5W type composite outer sleeve metal oxide gapless arrester of the national standard is the most widely used lightning protection product in line lightning protection application, that is, the arrester is fixed on the line cross arm by means of fastening bolt, and must be connected by branch lead, in the annual preventive detection and maintenance, or when the lightning damage occurs, the power supply must be stopped to climb the pole to disconnect the wire, unscrew the nut, remove the arrester, and then install and fix it on the line cross arm after testing. The gapless arrester needs regular maintenance and replacement due to the risk of aging and damage during system operation. It is difficult to check the damage of the arrester installed on the high line, and the fault point can only be found by line inspection. Some places use the way of installing a disconnector to isolate the system current to avoid grounding, and provide display for line inspection. Due to the quality and process problems of the disconnector itself, abnormal disconnection often occurs, increasing the number of fault maintenance and time, increasing the time of line without protection risk, and the main disadvantage is that the arrester or disconnector can only be replaced after power failure, and the application of the boom truck for live replacement will consume a lot of manpower and material resources and be limited by the terrain.

[0003] Another kind is chamber arrester, which mainly moves the zinc oxide arrester body from outdoor to indoor to reduce the influence of natural environment on the arrester body; the arrester can be detected, maintained and replaced by means of insulated operating rod. However, the porcelain outer sleeve is heavy and fragile, and once the arrester fails and explodes, the flying metal oxide and fragile porcelain outer sleeve can easily damage other electrical equipment and passers-by, and the installation on the high line is not convenient; the arrester body and the chamber are not sealed, and are affected by the environment for a long time, and water vapor and salt can easily enter the chamber under harsh climate conditions, especially in coastal areas with high salt mist concentration; since the arrester body and the chamber are not sealed, the arrester body needs to increase the insulation height and the distance of the creepage shed, thereby increasing the weight, and the arrester is easy to fall due to the excessive weight, which also causes the high overall cost; the chamber part cannot be truly sealed and fully insulated; it is difficult to install intelligent detection devices for smart grid; when the disconnector explodes, the drooping disconnector drainage line is too close to the electrical distance of the break, which can cause gap discharge; the puncture type clamping connection line is energized, and the transformer at the power supply side and the user side is passively unable to separate, and the drooping transformer cable head has no connection point, and the intermediate connection increases the cost and fault point.

[0004] The third is the patent with the authorization number CN204189543, which integrates the intelligent detection circuit and the zinc oxide lightning arrester into one body, and the application mainly has the following shortcomings: first, once the zinc oxide lightning arrester is damaged by overvoltage or the lightning arrester is aged, the whole will be scrapped, and the useless waste will be caused due to the damage of the electronic detection circuit; second, the zinc oxide lightning arrester is operated under high voltage for a long time, the valve piece will heat, and the integration of the intelligent detection circuit and the valve piece will cause the electronic components on the circuit to be easily damaged by heat; third, the sampling circuit of the application adopts the series resistance voltage division method, which needs to connect the sampling resistor and the zinc oxide resistor in series with the ground, and the electronic circuit is easy to be damaged by lightning current; fourth, the application adopts wireless channel to transmit data, and cannot set up a super-power wireless transceiver due to the influence of the wireless management regulation, so that the data cannot be directly transmitted to the background server at a long distance, the wireless transmission distance is short, and a relay needs to be added to transmit the data farther; fifth, the application does not have the GPS or Beidou positioning function, and cannot realize real-time geographic positioning when a fault occurs, so that the operation and maintenance personnel cannot quickly navigate the geographic position of the fault point; sixth, the application does not have a disengaging device, and cannot isolate the ground current due to the closed circuit of the lightning arrester. SUMMARY

[0005] The application aims to overcome the above-mentioned shortcomings, and provides a detachable support type intelligent lightning arrester device, which is open to prevent electromagnetic induction, does not need a bypass, and can be operated with a live working tool or disassembled with the lightning arrester body and the disengaging device, so as to quickly plug and repair or replace, reduce the inconvenience caused by power failure, and improve the repair and maintenance efficiency; the support type with a busbar structure can support and separately connect the power supply side and the transformer side conductors, reduce the lightning arrester special lead and the lightning arrester special insulator; the light insulating cavity is made of light hard PC insulating material with high strength, high electrical performance, good explosion-proof performance, aging resistance, and greatly reduced weight, which is installed at a high position of the circuit and does not cause greater burden, the upper and lower parts between the light insulating cavity and the lightning arrester body are sealed, and the bottom of the grounding rod is attached with rubber, so that the whole device has no electrical exposed point, and the overall electrical performance of the lightning arrester is not affected when operated in harsh natural conditions; the lightning arrester and the disengaging device are monitored in real time when suffering from overvoltage and when failing during operation, the operation state is comprehensively analyzed, and a message is sent to the mobile phone of the operation and maintenance personnel to display the fault position, the lightning stroke times, the leakage current and other information;

[0006] (II) Technical scheme

[0007] In order to achieve the above object, the detachable support type intelligent lightning arrester device comprises a lead-out type mounting bracket (1), a light insulation cavity (2), an insulation shield (3), a connecting plate (4), a static electricity testing grounding rod (5), an upper contact sheet (6), an upper contact (7), an upper insulation waterproof piston ring (8), a lightning arrester body (9), an open type contact ring (10), a lower insulation waterproof piston ring (11), an open type contact sheet fixing ring (12), a contact sheet (13), an open type elastic tension spring (14), a sealing ring (15), a monitoring device (16), a disconnector (17), an isolation insulation sheath (18), an open-close type static electricity testing grounding rod cover (19), a metal connecting rod (20), a busbar (21), an insulation wire (22), a wiring terminal (23) and the like. It is mainly applied to lightning protection and operating overvoltage of medium voltage distribution network station equipment end, and can be used for live working. The insulation operating rod plug-in monitoring device (16) and the lightning arrester body (9) and the like assembly are used for rapid maintenance and replacement, reduce many inconveniences caused by power failure, and improve the efficiency of installation and maintenance.

[0008] The detachable support type intelligent lightning arrester device is folded at a right angle, one end (4.1) is screwed with the top end of the light composite insulation cavity (2) and the upper contact sheet (6), and the sealing ring (15) is interposed for sealing treatment to prevent water and salt from entering the lightning arrester top end in rainy weather and severe coastal climate environment, and damage the sealing inside the lightning arrester.

[0009] The detachable support type intelligent lightning arrester device is folded at a right angle, one end (4.1) is screwed with the top end of the light composite insulation cavity (2) and the upper contact sheet (6), and the sealing ring (15) is interposed for sealing treatment to prevent water and salt from entering the lightning arrester top end in rainy weather and severe coastal climate environment, and damage the sealing inside the lightning arrester.

[0010] The detachable support type intelligent lightning arrester device is folded at a right angle, one end (4.1) is screwed with the top end of the light composite insulation cavity (2) and the upper contact sheet (6), and the sealing ring (15) is interposed for sealing treatment to prevent water and salt from entering the lightning arrester top end in rainy weather and severe coastal climate environment, and damage the sealing inside the lightning arrester.

[0011] The detachable support type intelligent lightning arrester device, the light insulation cavity (2) is reinforced, which is convenient for supporting the tower structure of the conductor, and the size umbrella skirt structure meets the climbing distance requirement, the umbrella skirt above is larger than the umbrella skirt below, and the umbrella skirt above is larger than the umbrella skirt below, which plays the role of preventing rain curtain, preventing pollution and preventing ice column from adhering to other umbrella skirts, and also has the role of blocking snow, so that the lightning arrester is more reliable in insulation under natural disasters; the cavity inner wall has a taper of more than half a degree upwards and downwards, which is convenient for plugging and sealing of the lightning arrester body 9, the size umbrella skirt is matched with the root, the circular arc transition is adopted to enhance the cavity strength, the explosion-proof effect is achieved to prevent the lightning arrester from being damaged and the fragments from splashing, and once the lightning arrester fails and explodes, the splashing metal oxide together with the fragile porcelain sheath can easily cause line grounding failure and harm other electrical equipment and passers-by.

[0012] The detachable support type intelligent lightning arrester device, the lightning arrester body (9) is provided with an upper contact (7) and an insulation waterproof piston ring (8) at the upper end, the waterproof piston ring is provided with two sealing rings (8.1) and is made of insulation material by molding, which is similar to the structure design of the automobile piston, the piston ring body is made of hard insulation material by molding, two grooves are formed in the piston ring body to install soft rubber rings, which play the sealing and insulation roles, the upper insulation waterproof piston ring 8 is used to seal the cavity and the lightning arrester body 9, so as to prevent the high voltage at the top end of the lightning arrester body 9 from creeping from the inside of the cavity, because the inside of the light insulation cavity 2 is a smooth surface and is subjected to insulation sealing treatment, the creeping will be performed from the outside of the light insulation cavity 2, the upper end of the upper contact 7 is screwed and pressed on the upper end face of the insulation waterproof piston ring 8, and the upper contact 7 is in close elastic electrical contact with the upper contact piece 6 to ensure stable electrical connection.

[0013] The detachable support type intelligent lightning arrester device, the lower insulation waterproof piston ring (11) is arranged at the lower part of the open contact ring (10) to seal the lightning arrester body and the light insulation cavity, so as to prevent water and salt from entering the inside of the lightning arrester.

[0014] The detachable support type intelligent lightning arrester device, the lead-out type mounting bracket (1) is annular and is arranged on the outer wall of the light composite insulation cavity (2), a sealing ring is arranged between one side and the open contact piece fixing ring (12) to be screwed as a whole and to ensure stable electrical connection, and the sealing ring plays a sealing role.

[0015] The detachable support type intelligent lightning arrester device, the open contact ring (10) is open, which prevents electromagnetic induction from forming corona and causing discharge, and two holes are arranged on the side to be screwed with the monitoring device (16) to form a whole.

[0016] A detachable pillar type intelligent lightning arrester device, the open contact sheet fixing ring (12) is open, preventing electromagnetic induction from forming corona and causing discharge, the bottom distribution screw hole (12.1) fixes the contact sheet (13), the side surface is provided with a screw hole, is screwed with the outgoing type installation support (1), and stable electrical connection is ensured. The contact sheet (13) ensures that the current flow is constant and cannot be discharged.

[0017] A detachable pillar type intelligent lightning arrester device, the open contact sheet fixing ring (12) is open, preventing electromagnetic induction from forming corona and causing discharge, the bottom distribution screw hole (12.1) fixes the contact sheet (13), the side surface is provided with a screw hole, is screwed with the outgoing type installation support (1), and stable electrical connection is ensured. The contact sheet (13) ensures that the current flow is constant and cannot be discharged.

[0018] A detachable pillar type intelligent lightning arrester device, the monitoring device 16 is made of excellent PC material, has excellent electrical insulation performance, high mechanical strength, excellent explosion-proof performance, good waterproof and pollution-resistant performance, and greatly reduces the weight of the overall device. Insulating engineering materials, and the lightning arrester body 9 is screwed to the corresponding tight fit; the lower part of the monitoring device 16 is conical, the waist is provided with a symmetrical columnar plug-in operation lock, and the inside is composed of electronic elements: CPU, temperature sensor, current transformer, antenna, solar panel, voltage stabilizing element, rectifier element, counter, resistance sheet, aluminum electrode, current lead, Beidou positioning group, lithium battery and the like.

[0019] The monitoring device 16, the CPU processes the signals transmitted by the temperature sensor and the current transformer, and sends them to the background through the antenna. The temperature sensor is used to detect the temperature of the lightning arrester body valve sheet and feed back to the CPU for processing. The current transformer detects the current in the current lead and feeds back to the processor, which is sent to the background through the antenna.

[0020] The monitoring device 16, the antenna sends the CPU signal to the background, receives the background signal and feeds it back to the CPU. Six 2.5-volt solar panels surround the light to power the lithium battery. Three blocks are connected in series and then connected in parallel. The maximum voltage of three blocks connected in series is 7.5 volts. Due to the shielding of part of the solar panels by the light-weight insulating cavity, the maximum voltage is maintained at about 6 volts. The surrounding design ensures that the charging voltage can be guaranteed in any season.

[0021] The monitoring device 16, the voltage stabilizing element stabilizes the power supply of the lithium battery, and the rectifier element rectifies the current converted by the solar panel and charges the lithium battery through the voltage stabilizing circuit.

[0022] The monitoring device 16 analyzes the current generated by lightning strikes through the current detection circuit to obtain the number of lightning strikes. The counter counts the number of lightning strikes and feeds back to the CPU for prompt processing. The background records the valve sheet temperature and leakage current after lightning strike.

[0023] The monitoring device 16 is electrically connected by screwing the aluminum electrode on the bolt under the lightning arrester body 9, and the current lead is connected in parallel by using 0.5 square insulated soft copper wire for current detection circuit detection.

[0024] The monitoring device 16 is connected in parallel by connecting the upper end of the current lead to the lower end of the aluminum electrode, passing through the aluminum sheet, passing through the resistance sheet, passing through the current transformer, and connecting the lightning arrester bolt.

[0025] The monitoring device 16 can be conveniently operated by the insulating operating rod, and the lightning arrester body is driven to be inserted and replaced.

[0026] A detachable support type intelligent lightning arrester device, the disconnector 17 is screwed on the monitoring device 16 to form an integral whole, the disconnector lead 17.1 is screwed on the metal connecting rod 20 through the isolation insulation sheath 18, the metal connecting rod 20 is electrically connected to the lower side of the open contact ring 10 through the lower insulation waterproof piston ring 11, and after the isolation insulation sheath 18 is installed, the insulation distance between the disconnector lead and the disconnector is increased after the lightning arrester is damaged and the disconnector is detached to form a fracture, and the protection of the debris splashing after the disconnector explodes.

[0027] A detachable support type intelligent lightning arrester device, the disconnector 17 is a thermal explosion type disconnector, which is more stable than the thermal melting type disconnector and is less affected by the environment, and the outer surface of the lightning arrester body 9 is smooth without an umbrella skirt, thereby reducing the volume of the cavity, reducing the weight and reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a detachable support type intelligent lightning arrester device structure diagram.

[0029] Figure 2 It is a structure diagram of the upper contact, the upper insulation waterproof piston ring, the lightning arrester body, the lower insulation waterproof piston ring and the open contact ring.

[0030] Figure 3 It is a structure diagram of the connecting plate, the busbar, the terminal, the grounding rod, the open-close type grounding rod cover and the insulated wire.

[0031] Figure 4 It is a structure diagram of the upper insulation waterproof piston ring and the sealing ring.

[0032] Figure 5 It is a structure diagram of the metal connecting rod and the disconnector lead.

[0033] Figure 6 It is a structure diagram of the open contact sheet fixing ring.

[0034] Figure 7It is the contact sheet structure diagram of the application.

[0035] Figure 8 It is the elastic tension spring structure diagram of the application. DETAILED DESCRIPTION

[0036] The detachable support type intelligent lightning arrester device of the application comprises a leading installation support (1), a light insulation cavity 2, an insulation shield 3, a connecting plate 4, an electricity testing grounding rod 5, an upper contact sheet 6, an upper contact 7, an upper insulation waterproof piston ring 8, a lightning arrester body 9, an open contact ring 10, a lower insulation waterproof piston ring 11, an open contact sheet fixing ring 12, a contact sheet 13, an open elastic tension spring 14, a sealing ring 15, a monitoring device 16, a disconnector 17, an isolation insulation sheath 18, an open and close type electricity testing grounding rod cover 19, a metal connecting rod 20, a busbar 21, an insulation wire 22, a wiring terminal 23 and the like.

[0037] The side screw hole of the leading installation support 1 passes through the light insulation cavity 2 and is screwed with the open contact sheet fixing ring 12 to be integrated to ensure stable electrical connection; one end 4.1 of the connecting plate 4 is screwed at the top end of the light insulation cavity 2, and the 4.2 and lower 4.3 reserved screw holes on the connecting plate 4 can be screwed with the wiring terminal 23; then the lightning arrester body 9 and the monitoring device 16 and the like assembly are inserted into the light insulation cavity 2; the other end of the leading installation support 1 can be installed on the line cross arm; the wire head of the insulation wire 22 is crimped on the wiring terminal 23 and is screwed with the 4.2 and lower 4.3 on the connecting plate 4 and the busbar 21, and the insulation shield 3 is covered to constitute a set of detachable support type intelligent lightning arrester device; the other wire head of the insulation wire 22 can be directly connected to the distribution line.

[0038] When the lightning arrester is damaged, the lightning arrester body 9 is pulled out by using the insulation operating rod to clamp the operating lock catch on both sides of the monitoring device 16, and then the operating rod is used to replace the new lightning arrester body 9 to continue operation, which can be directly plugged and pulled without grounding, the lightning arrester on the traditional line can only be replaced after power failure, or a bypass ground wire is hung to replace, which consumes a large amount of manpower and material resources, and the lightning arrester cannot protect the line during the damage period, and power failure will cause certain economic loss, so live working is particularly important.

[0039] The light insulation cavity 3 is designed to have the largest uppermost umbrella skirt, which can well protect the lower umbrella skirt, and experiments show that the first umbrella skirt adopts the largest one to better prevent the occurrence of surface flashover, especially for blocking the electrical channel formed by rain curtain, ice column and snow.

[0040] The detachable support type intelligent lightning arrester device is not encapsulated with the monitoring device, and any damage can be replaced without affecting each other. The lightning arrester is hung under high voltage for a long time and will not affect the monitoring device. The disconnector is screwed at the bottom of the monitoring device and exists independently. The lightning arrester body, the monitoring device and the disconnector are connected in series to the circuit. Once one of them is damaged, the whole device will be damaged and an alarm will be given. The whole device can be removed by an insulating operating rod. Any damage can be replaced without causing unnecessary waste.

[0041] The light insulation cavity 3 is made of hard high-strength PC material, which can prevent birds from tearing and pecking. In recent years, the environment has improved and the number of birds has increased, which has caused some damage to the line operation.

[0042] The design aims to reduce weight and enhance explosion-proof performance; the fully insulated sealed cavity improves the line insulation level; when subjected to lightning overvoltage and when the disconnector or lightning arrester is damaged, timely alarm and position information display, background monitoring and analysis for timely warning and replacement; structure to prevent electromagnetic induction, no need for bypass grounding on the ground, can complete the live working with the help of an insulating operating rod, easy to assemble, disassemble and maintain the damaged parts without climbing the pole, reducing labor intensity and improving the safety and economic benefits of operation and maintenance; support type with busbar structure, which can support and connect the power supply side and transformer side conductors respectively, reducing the special lightning arrester lead and the lightning arrester special insulator; the lightning arrester body is installed in the light insulation cavity to avoid the invasion of sunlight, rain and haze, making the lightning arrester more stable and having a longer service life.

Claims

1. A detachable post-type intelligent surge arrester, comprising: The device comprises an outgoing installation support (1), a light composite insulating cavity (2), an insulating shield (3), a connecting plate (4), a grounding rod (5), an upper contact piece (6), an upper contact (7), an upper insulating waterproof piston ring (8), a lightning arrester body (9), an open contact ring (10), a lower insulating waterproof piston ring (11), an open contact piece fixing ring (12), a contact piece (13), an open elastic tension spring (14), a sealing ring (15), a monitoring device (16), a disconnector (17), an isolation insulating sheath (18), an open-close grounding rod cover (19), a metal connecting rod (20), a busbar (21), an insulating wire (22), and a terminal (23). The light composite insulating cavity (2) is a reinforced tower structure for supporting the wire, and the size of the umbrella skirt structure meets the creepage distance requirement; the upper umbrella skirt is larger than the next umbrella skirt, and the uppermost umbrella skirt is the largest. The open contact piece fixing ring (12) is open, and the bottom is provided with screw holes (12.1) for fixing the contact piece (13). The contact piece (13) is provided with a plurality of contact pieces (13) which are spaced apart. The open contact ring (10) is open, and the side is provided with two holes for being screwed with the monitoring device (16). The open elastic tension spring (14) is provided with an insulating bent rod at the joint to form an insulating opening, and is clamped on the contact piece (13). The disconnector (17) is screwed on the monitoring device to form an integral body, and the disconnector drainage line (17.1) is wound around the isolation insulating sheath (18) and is screwed on the metal connecting rod (20), and the metal connecting rod (20) is connected to the lower side of the open contact ring (10).

2. The detachable column type smart surge protector according to claim 1, wherein: The connecting plate (4) is folded at a right angle, one end (4.1) is screwed with the top end of the light composite insulating cavity (2) and the upper contact piece (6), and the sealing ring (15) is arranged therebetween.

3. The detachable column type smart surge protector according to claim 1, wherein: The two ends of the connecting plate (4) are provided with reserved screw holes, and the busbar (21) and the terminal (23) can be stacked and screwed, and the insulating wire (22) can be crimped on the terminal (23).

4. The detachable column type smart surge protector according to claim 1, wherein: One end of the grounding rod (5) penetrates through the middle hole of the busbar (21) and is screwed on the connecting plate (4); the other end of the grounding rod (5) is provided with a horizontal hole, the open-close grounding rod cover (19) is arranged on the horizontal hole by using a pin, and the bottom of the grounding rod is provided with rubber.

5. The detachable column type smart surge protector according to claim 1, wherein: The upper end of the lightning arrester body (9) is provided with the upper contact (7) and the insulating waterproof piston ring (8), and the waterproof piston ring is provided with two sealing rings (8.1).

6. The detachable column type smart surge protector according to claim 1, wherein: The lower part of the open contact ring (10) is provided with the lower insulating waterproof piston ring (11).

7. The detachable column type smart surge protector according to claim 1, wherein: The outgoing installation support (1) is annularly clamped on the outer wall of the light insulating cavity (2), and the sealing ring is arranged between the outgoing installation support (1) and the open contact piece fixing ring (12) to be screwed as an integral body and form a current channel.

8. The detachable column type smart surge protector according to claim 1, wherein: The monitoring device (16) is made of high-strength anti-ultraviolet insulating material, and is screwed to the conical bottom of the arrester body (9) to be closely fitted; the lower part of the monitoring device (16) is conical and is guided, the waist part is provided with symmetrical cylindrical plug-in operation locks, and the CPU, temperature sensor, current transformer, antenna, solar panel, voltage stabilizing element, rectifying element, counter, resistance sheet, aluminum electrode, current lead, Beidou positioning component and lithium battery are all included.

9. The detachable column type smart surge protector according to claim 8, wherein: The CPU processes signals transmitted by the temperature sensor and the current transformer, and the temperature sensor detects the temperature of the valve sheet of the arrester body.

10. The detachable column type smart surge protector according to claim 8, wherein: The current transformer detects the current in the current lead, and the antenna sends the CPU signal to the background and receives the background signal feedback to the CPU.

11. The detachable column type smart surge protector according to claim 8, wherein: Six solar panels are used to surround the light to supply power to the lithium battery, and the voltage stabilizing element stabilizes the voltage of the lithium battery.

12. The detachable column type smart surge protector according to claim 8, wherein: The rectifying element rectifies the current converted by the solar panel, and the counter counts the number of lightning strikes.

13. The detachable column type smart surge protector according to claim 8, wherein: The resistance sheet is made of zinc oxide resistance sheet, and the aluminum electrode is screwed on the bolt below the arrester body.

14. The detachable column type smart surge protector of claim 8, wherein: The current lead is made of 0.5 square insulating soft copper wire, and the Beidou positioning component collects position information and feeds it back to the CPU.

15. The detachable column type smart surge protector of claim 8, wherein: The upper end of the current lead is connected to the bolt below the arrester body, passes through the aluminum sheet, bypasses the resistance sheet, passes through the current transformer, and is connected to the arrester bolt. The operation locks on both sides of the monitoring device (16) can be plugged in and out for quick replacement, and the arrester body can also be detected.

16. The detachable column type smart surge protector according to claim 1, wherein: The insulating shield (3) covers the top end of the light insulating cavity (2), the connecting plate (4) and the whole electrical metal part.

17. The detachable column type smart surge protector according to claim 1, wherein: The disengager (17) is provided with an isolation insulating sheath (18), and the disengager (17) is a thermal explosion type disengager.

18. The detachable column type smart surge protector of claim 1, wherein: The outer surface of the arrester body (9) is smooth and does not need an umbrella skirt.

Images