CN214153969U - Lightning protection grounding box of hierarchical earial drainage - Google Patents
Lightning protection grounding box of hierarchical earial drainage Download PDFInfo
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- CN214153969U CN214153969U CN202022729644.8U CN202022729644U CN214153969U CN 214153969 U CN214153969 U CN 214153969U CN 202022729644 U CN202022729644 U CN 202022729644U CN 214153969 U CN214153969 U CN 214153969U
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Abstract
The utility model discloses a lightning protection grounding box of hierarchical earial drainage, including the box of seting up the cavity and installing in the electric control dish in the cavity, still include the hierarchical earial drainage module of installing on the electric control dish, the hierarchical earial drainage module includes one-level ground copper bar and second grade ground copper bar, it has one-level high frequency separation ware to establish ties between one-level ground copper bar and the second grade ground copper bar, it has one-level protection clearance to connect in parallel on the one-level high frequency separation ware; and the intelligent monitoring module is arranged on the electric control panel and comprises an earth resistance on-line monitoring module for detecting the earth resistance of each earth copper bar. The utility model can realize the grading drainage on the equipotential base after the lightning stroke, and reduce the residual voltage of each grounding copper bar step by step, so that the working grounding of the electrical equipment is in the lowest potential level; and the lightning stroke frequency, the grounding resistance and the switch state of the lightning protection grounding system can be detected through a detection module.
Description
Technical Field
The utility model relates to a lightning protection technical field specifically discloses a lightning grounding case of hierarchical earial drainage.
Background
A lightning protection grounding box with graded current discharge has the function of discharging direct lightning, induction lightning or other forms of lightning into the ground, the utility model with the publication number of CN207442193U discloses an intelligent protection grounding box with stable grounding, which comprises a grounding box, a voltage detection module for measuring the current voltage value of a low-voltage main circuit and a voltage display screen for displaying the current voltage value of the low-voltage circuit are arranged on the grounding box, the intelligent protection grounding box also comprises an infrared probe and an infrared signal transmission module for sensing the approach of personnel, and a processor for connecting the voltage detection module and the infrared probe, a three-phase switch blade is arranged on the grounding box through a switch blade mounting seat, a grounding mounting plate is arranged on the grounding box, a grounding conductor is arranged on the grounding mounting plate, a closing conductive slot is arranged at one end of the grounding conductor far away from the grounding mounting plate, and a mounting plate is symmetrically arranged at the upper end of the grounding mounting plate relative to the closing conductive slot, install the motor mount pad on the mounting panel, install signal reception module on the motor mount pad, the motor mount pad is kept away from the one end of motor and is installed the piston, the piston is kept away from the one end of motor mount pad and is installed the piston axle, the one end that the piston was kept away from to the piston axle is installed the baffle, the high ground connection mount pad height in vertical side of plug-in strip mount pad is greater than vertical ascending height of side.
The grounding box is simple in structure, and when lightning strikes, grounding points of all functions of electrical equipment can be instantly changed into high potential. When the grounding resistance is large, residual voltage exists in work grounding, and the residual voltage cannot be released in time. The residual pressure can influence the safe operation of working equipment and can also bring harm to the personal safety. And the state of personnel can only be monitored, the state of self components and parts can not be monitored, and the working stability and effectiveness can not be ensured.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that exists, the utility model discloses a lightning grounding case of hierarchical earial drainage, its concrete technical scheme as follows.
A lightning grounding box with classified discharge comprises a box body with a cavity, an electric control panel arranged in the cavity, and a grounding box body
The grading drainage module is arranged on the electric control disc and comprises a primary grounding copper bar and a secondary grounding copper bar, a primary high-frequency separator is connected between the primary grounding copper bar and the secondary grounding copper bar in series, and a primary protection gap is connected on the primary high-frequency separator in parallel;
and the intelligent monitoring module is arranged on the electric control panel and comprises an earth resistance on-line monitoring module for detecting the earth resistance of each earth copper bar.
Further, the ground resistance on-line monitoring module comprises a ground resistance detection device and a switch; the switch is connected between the primary high-frequency blocker and the secondary grounding copper bar, and the grounding resistance detection device is electrically connected with the switch and controls the on-off of the switch.
Furthermore, the grading drainage module also comprises a working grounding copper bar, and a three-stage high-frequency isolator is connected in series between the working grounding copper bar and the second-stage grounding copper bar; and the working grounding copper bar is connected with a zero line in a power grid through an air switch.
Furthermore, the intelligent monitoring module further comprises a switching value module for detecting the state of the air switch, the switching value module comprises an air switch state detection device and a switching value detection module, the air switch state detection device is installed on one side tightly attached to the air switch, and the switching value detection module is electrically connected with the air switch state detection device.
Further, the secondary grounding copper bar is connected with a metal component of the optical fiber, and the secondary grounding copper bar is connected with an N line of the three-phase electric system in an equipotential manner through an equipotential connector; the working grounding copper bar is electrically connected with a shell of the electrical equipment.
Further, the switch includes a contactor; the contactor comprises a first normally closed contact and a second normally closed contact; the first normally closed contact is connected in series on a branch where the first-stage high-frequency barrier is located, and the second normally closed contact is connected in series on a branch where the third-stage high-frequency barrier is located; the grounding resistance detection device comprises a relay; the relay comprises a first normally open contact and a second normally open contact; the ground resistance monitoring device is electrically connected with the first-stage grounding copper bar through a first normally open contact, and the ground resistance monitoring device is electrically connected with the second-stage grounding copper bar through a second normally open contact.
Furthermore, the first-stage grounding copper bar is electrically connected with the first grounding electrode, and the second-stage grounding copper bar is electrically connected with the second grounding electrode.
Furthermore, the intelligent monitoring module also comprises a lightning stroke counting module for counting lightning strokes, wherein the lightning stroke counting module comprises a counter, and a primary counting sensor and a secondary counting sensor which are respectively connected with the counter; the primary counting sensor and the secondary counting sensor respectively measure the times of lightning strike current passing through the primary grounding copper bar and the secondary grounding copper bar.
Furthermore, the box body comprises a first shell and a second shell, wherein the first shell comprises a first cavity for accommodating the lightning-proof component, a first opening formed in the first shell and a first cover plate for closing the first opening; the second shell comprises a second cavity for accommodating the wiring terminal, a second opening and a third opening which are formed in the second shell, and a second cover plate for closing the third opening; the first cavity is communicated with the second cavity.
Further, one side of the first cover plate is hinged with one side of the first shell; the second cover plate is connected with the second shell through screws.
Has the advantages that: 1. the utility model discloses a lightning grounding case of hierarchical earial drainage, including hierarchical earial drainage module, hierarchical earial drainage module is at the in-process of releasing the lightning current, the lightning current makes the drastic change of one-level high frequency separation ware hysteresis current, make its both ends voltage different, thereby puncture one-level protection clearance, discharge through one-level ground copper bar to ground before the breakdown, carry out the discharge to ground respectively through one-level ground copper bar and second grade ground copper bar after the breakdown, the residual pressure of one-level ground copper bar has greatly been reduced, the ground connection of guaranteeing operating equipment is in the minimum potential level, the security of operating equipment has been improved. When no lightning stroke exists, the primary high-frequency barrier is in a low-resistance state and is communicated with the primary grounding copper bar and the secondary grounding copper bar, so that the equipotential of each grounding point is guaranteed.
2. The utility model discloses a lightning grounding case of hierarchical earial drainage forms multistage to ground earial drainage through hierarchical earial drainage module in producing the lightning current, can realize reducing the effect of residual pressure better, monitors hierarchical earial drainage module through intelligent monitoring module simultaneously, and the quick fault location of finding can guarantee the stability of a lightning grounding case work of hierarchical earial drainage.
3. The utility model discloses a lightning protection grounding box of hierarchical earial drainage is through switching value detection module monitoring air switch's state respectively, through thunderbolt count module monitoring thunderbolt number of times and earial drainage number of times, detects the ground resistance of each ground connection copper bar respectively through ground resistance monitoring module to guarantee the stability and the validity of a lightning protection grounding box of hierarchical earial drainage.
Drawings
Fig. 1 is one of schematic diagrams of a first housing and a second housing of the present invention;
fig. 2 is a second schematic diagram of the first housing and the second housing of the present invention (the structure of the staged drainage module and the intelligent monitoring module mounted on the electric control panel is not shown in the figure);
fig. 3 is a topological diagram of the electrical principle of the grading drainage module and the intelligent monitoring module in embodiment 1 of the present invention;
fig. 4 is a topological diagram of the electrical principle of the grading drainage module and the intelligent monitoring module in embodiment 2 of the present invention;
fig. 5 is an electrical principle installation layout diagram of the grading drainage module and the intelligent monitoring module in embodiment 2 of the present invention;
reference numerals: 1-a first housing; 2-a second housing; 11-a first cover plate; 12-a first cavity; 13-a first opening; 21-a second cover plate; 22-a second cavity; 23-a second opening; 24-a third opening; 25-inclined plane; 501-first-level grounding copper bar; 502-secondary ground copper bar; 503-first high frequency blocker; 504-primary guard gap; 505-a first connection terminal; 506-a second connection terminal; 507-a third connecting terminal; 508-a fourth connection terminal; 509 — first ground; 510-a second ground electrode; 511-a third ground electrode; 512-two-stage high frequency blocker; 513-secondary protection gaps; 514-working ground copper bar; 515-a three-level high frequency barrier; 5021, a secondary grounding copper bar I; 5022, a second-level grounding copper bar II; 101-a lightning rod; 102-an electric control disc; 103-switching value detection module; 104-ground resistance detection means; 105-a lightning strike counting module; 106-a first normally closed contact; 107-a second normally closed contact; 108-a third normally closed contact; 109-air switch; 110-an optical fiber; 111-equipotential connectors.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1 and 2, a lightning grounding box with a graded drainage function includes a box body with a cavity, an electric control panel 102 installed in the cavity, and further includes
The grading drainage module is arranged on the electric control panel 102 and comprises a primary grounding copper bar and a secondary grounding copper bar, a primary high-frequency separator 503 is connected between the primary grounding copper bar 501 and the secondary grounding copper bar 502 in series, and a primary protection gap 504 is connected on the primary high-frequency separator 503 in parallel;
and the intelligent monitoring module is arranged on the electric control panel 102 and comprises an earth resistance on-line monitoring module for detecting the earth resistance of each earth copper bar.
In this embodiment, when a lightning current is generated, the primary high-frequency blocker 503 delays a rapid change of the current, so that voltages at two ends of the primary high-frequency blocker are different, the voltage of the primary ground copper bar 501 is higher than that of the secondary ground copper bar 502, and at this time, the current is drained through the primary ground copper bar 501. Because the primary protection gap 504 is connected in parallel with the primary high-frequency blocking device 503, when the lightning current is large enough to cause the generated voltage to be greater than the breakdown voltage of the primary protection gap 504, the primary protection gap 504 breaks down, and at this time, the secondary ground copper bar 502 is conducted with the primary ground copper bar 501, and the current is respectively discharged through the primary ground copper bar 501 and the secondary ground copper bar 502. By adopting the structure, when lightning current is small or grounding resistance is small, current is discharged through the first-level grounding copper bar 501; when lightning current is large or ground resistance is large, the primary ground copper bar 501 and the secondary ground copper bar 502 are drained at the same time. Greatly reduced the residual voltage of one-level ground connection copper bar 501, guaranteed that the ground connection of working equipment is in minimum potential level, improved the security of working equipment. When no lightning stroke exists, the primary high-frequency blocking device 503 is in a low-resistance state and is communicated with the primary grounding copper bar 501 and the secondary grounding copper bar 502, so that the equal potential of each grounding point is ensured. According to the above principle, the utility model discloses can include a plurality of earial drainage parts, form multistage earial drainage, can realize reducing the effect of residual pressure better.
Specifically, the ground resistance online monitoring module includes a ground resistance detection device 104 and a switch; the switch is connected between the primary high-frequency blocker 503 and the secondary grounding copper bar 502, and the grounding resistance detection device 104 is electrically connected with the switch and controls the on-off of the switch.
In this embodiment, the on/off of the first-stage ground copper bar 501 and the second-stage ground copper bar 502 is controlled by the switch, so that the individual ground resistance of each ground copper bar can be detected respectively.
Furthermore, the grading drainage module further comprises a working ground copper bar 514, and a three-stage high-frequency isolator 515 is connected in series between the working ground copper bar 514 and the secondary ground copper bar 502; the working ground copper bar 514 is connected to the neutral line of the power grid through the air switch 109. The intelligent monitoring module further comprises a switching value module for detecting the state of the air switch, the switching value module comprises an air switch state detection device and a switching value detection module 103, the air switch state detection device is installed on one side tightly attached to the air switch 109, and the switching value detection module 103 is electrically connected with the air switch state detection device.
Overcurrent protection can be provided for the working equipment by arranging the air switch 109, and the safety of the lightning protection grounding system and the working equipment can be further ensured by monitoring the state of the air switch 109.
Further, the secondary ground copper bar 502 is connected with a metal component of the optical fiber 110, and the secondary ground copper bar 502 is connected with an N line of the three-phase electrical system in an equipotential manner through an equipotential connector 111; the work copper ground bar 514 is electrically connected to the housing of the electrical equipment.
Specifically, the first-stage ground copper bar 501 is electrically connected to the first ground electrode 509, and the second-stage ground copper bar 502 is electrically connected to the second ground electrode 510. The first-stage ground copper bar 501 and the second-stage ground copper bar 502 are grounded through a first grounding electrode 509 and a second grounding electrode 510, respectively.
Specifically, the intelligent monitoring module further comprises a lightning stroke counting module 105 for counting lightning strokes, wherein the lightning stroke counting module 105 comprises a counter and a primary counting sensor 22 and a secondary counting sensor 23 which are respectively connected with the counter; the primary counting sensor 22 and the secondary counting sensor 23 respectively measure the times of lightning strike current passing through the primary ground copper bar 501 and the secondary ground copper bar 502.
The utility model provides an intelligent monitoring module can detect the state of hierarchical earial drainage module, the switching value module can detect the state of each switch in the hierarchical earial drainage module. The lightning stroke counting module 105 can detect the times of lightning current passing through each grounding copper bar when a lightning stroke occurs, so that the lightning stroke times can be obtained. The earth resistance on-line monitoring module can detect the earth resistance of each earth copper bar in the grading drainage module. When measuring the ground resistance, the ground resistance detection device 104 controls the first switch and the second switch to be disconnected, so that the first-stage ground copper bar 501, the second-stage ground copper bar 502 and the working ground copper bar 514 are no longer electrically connected, and then the ground resistance of the first-stage ground copper bar 501 and the ground resistance of the second-stage ground copper bar 502 are detected through cables respectively connected to the first-stage ground copper bar 501 and the second-stage ground copper bar 502. The intelligent monitoring module can conveniently and quickly acquire the switch state, the lightning stroke times and the grounding state of the grading drainage module; the working state of the utility model can be quickly known during normal operation, and the fault point position can be quickly found out during fault; make the utility model discloses it is more convenient, intelligent.
Specifically, the switch includes a contactor 28; the contactor 28 includes a first normally closed contact 106 and a second normally closed contact 107; the first normally closed contact 106 is connected in series to a branch where the first-stage high-frequency barrier 503 is located, and the second normally closed contact 107 is connected in series to a branch where the third-stage high-frequency barrier 515 is located; the ground resistance detection device 104 includes a relay 27; the relay 27 comprises a first normally open contact and a second normally open contact; the ground resistance monitoring device 17 is electrically connected with the first-stage ground copper bar 501 through a first normally open contact, and the ground resistance monitoring device 17 is electrically connected with the second-stage ground copper bar 502 through a second normally open contact.
With such a structure, the ground resistance detection device 104 can control the closing of the coil of the relay 27 through the current, control the opening and closing of the contact points on the coil of the relay 27 through the closing of the coil of the relay 27, and control the opening and closing of the coil of the contactor 28 through the opening and closing of the contact points of the relay 27; finally, the coil of the contactor 28 is electrified to act, and the first normally closed contact 106 and the second normally closed contact 107 on the contactor are controlled to be disconnected, so that the primary grounding copper bar 501, the secondary grounding copper bar 502 and the working grounding copper bar 514 are disconnected with each other. The on-off of the circuit is controlled by controlling the relay 27, and the grounding resistances of the first-stage grounding copper bar 501 and the second-stage grounding copper bar 502 can be separately measured, so that the grounding reliability of the first-stage grounding copper bar 501 and the second-stage grounding copper bar 502 can be respectively judged, and the automatic reading of the grounding resistance can be realized by controlling the grounding resistance detection device 104.
Specifically, in this embodiment, the ground resistance online monitoring module of the ground resistance may adopt a ground resistance measuring device and a ground resistance measuring method disclosed in the publication No. CN110456164B to measure the ground resistance; the lightning strike counting module 105 may use a remote signaling contact monitoring and lightning strike counting device disclosed in the patent publication No. CN209280797U for lightning strike counting.
Adopt such structure more convenient the utility model discloses be connected with external equipment, can dismantle fast when the circuit needs to be dismantled, when the circuit breaks down or debugs, can carry out troubleshooting or circuit debugging through the position of binding post row, make things convenient for field operation.
Specifically, the box body comprises a first shell 1 and a second shell 2, wherein the first shell 1 comprises a first cavity 12 for accommodating lightning-proof components, a first opening 13 arranged on the first shell 1, and a first cover plate 11 for closing the first opening 13; the second shell 2 comprises a second cavity 22 for accommodating the wiring terminal, a second opening 23 and a third opening 24 which are arranged on the second shell 2, and a second cover plate 21 for closing the third opening 24; the first cavity 12 communicates with the second cavity 22.
In this embodiment, put into the box with electric control dish 102 from first opening 13 and make hierarchical earial drainage module and intelligent monitoring module be located first cavity 12 for binding post is located second cavity 22, and second opening 23 can hold the connecting wire of practicing level with the earth electrode and pass through with outside connecting wire, and third opening 24 can carry out operations such as wiring and maintenance to the binding post. Specifically, as shown in fig. 3, the graded current discharging module includes a first-stage ground copper bar 501, at least one second-stage ground copper bar 502 electrically connected to the first-stage ground copper bar 501, and a working ground copper bar 514 electrically connected to the second-stage ground copper bar 502, a first-stage high-frequency blocker 503 is connected in series between the first-stage ground copper bar 501 and the second-stage ground copper bar 502, and a first-stage protection gap 504 is connected in parallel to the first-stage high-frequency blocker 503; a third-stage high-frequency separator 515 is connected in series between the working ground copper bar 514 and the second-stage ground copper bar 502; the working grounding copper bar 514 is connected with a zero line in the power grid through a protection switch.
Specifically, in this embodiment, a first connection terminal 505, a second connection terminal 506, and a third connection terminal 507 are further mounted on the electric control board 102, and the first connection terminal 505, the second connection terminal 506, and the third connection terminal 507 are respectively located in the second cavity 22, one end of the first connection terminal 505 is electrically connected to the first-stage ground copper bar 501, and the other end is used for connecting the lightning rod 101; one end of the second connection terminal 506 is electrically connected with the first-stage grounding copper bar 501, and the other end of the second connection terminal is used for connecting a first grounding electrode 509; one end of the third connecting terminal 507 is electrically connected to the second-stage grounding copper bar 502, and the other end is used for connecting to the second grounding electrode 510.
In this embodiment, each connection terminal is located in the second cavity 22, and the graded drainage module and the intelligent monitoring module are located in the first cavity 12, so that each connection terminal is separated from the graded drainage module and the intelligent monitoring module, and after the connection of each connection terminal is completed, the third opening 24 is directly sealed by the second cover plate 21, so that the connection terminal, the graded drainage module and the intelligent monitoring module can be operated in a targeted manner in subsequent work, and influence between the connection terminal, the graded drainage module and the intelligent monitoring module is avoided.
Specifically, one side of the first cover plate 11 is hinged with one side of the first shell 1, so that the first cover plate 11 can be conveniently opened to overhaul the lightning grounding component; the second cover plate 21 is connected to the second housing 2 by screws, and generally, the second cover plate 21 does not need to be opened to repair the terminal, thereby protecting the terminal.
Furthermore, the front surface and the bottom surface of the second housing 2 are connected by a transitional inclined surface 25, so that rainwater flows downwards along the inclined surface 25 to avoid rainwater from gathering at the second opening 23.
Example 2
The difference between this embodiment and embodiment 1 is that, as shown in fig. 4, the number of the second-stage ground copper bar 502 is two, and the second-stage ground copper bar i 5021 and the second-stage ground copper bar ii 5022 are respectively, as shown in fig. 5, the second-stage ground copper bar i 5021 is electrically connected with the first-stage ground copper bar 501, a first-stage high-frequency isolator 503 is connected in series between the second-stage ground copper bar i 5021 and the first-stage ground copper bar 501, the first-stage high-frequency isolator 503 is connected in parallel with a first-stage protective gap 504, the second-stage second copper bar i 5022 is electrically connected with the second-stage ground copper bar ii 5022, a second-stage high-frequency isolator 512 is connected in series between the second-stage ground copper bar i 5021 and the second-stage ground copper bar ii 5022, a second-stage protective gap 513 is connected in series on the second-stage high-frequency isolator 512, a fourth connection terminal 508 is further installed on the corresponding electric control panel 102, one end of the fourth connection terminal 508 is connected with the second-stage ground copper bar ii 5022 and is located below the second-stage ground copper bar ii 5022, the other end is used to connect to a third ground electrode 511.
The ground resistance detection device 104 includes a relay 27; the switch includes a contactor 28; the contactor 28 includes a first normally closed contact 106, a second normally closed contact 107, and a third normally closed contact 108; the first normally closed contact 106 is connected in series to a branch where the first-stage high-frequency barrier 503 is located; the second normally closed contact 107 is connected in series on a branch where the second-stage high-frequency blocker 512 is located; the third normally closed contact 108 is connected in series on a branch where the third-stage high-frequency barrier 515 is located; the relay 27 comprises a first normally open contact, a second normally open contact and a third normally open contact; the grounding resistance detection device 104 is electrically connected with the primary grounding copper bar 501 through a first normally open contact, the grounding resistance detection device 104 is electrically connected with the secondary grounding copper bar A6 through a second normally open contact, the grounding resistance detection device 104 is electrically connected with the secondary grounding copper bar B12 through a third normally open contact,
the three detection interfaces of the ground resistance detection device 104 are electrically connected with the first-stage grounding copper bar 501, the second-stage grounding copper bar I5021 and the second-stage grounding copper bar II 5022 through the first normally open contact, the second normally open contact and the third normally open contact respectively.
In this embodiment, the number of the two-stage ground copper bars 502 is not limited to two, and may be multiple, and the drainage manner of the multiple two-stage ground copper bars 502 is the same as that in embodiment 1, so that redundant description is not repeated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The lightning protection grounding box with the function of graded drainage comprises a box body with a cavity and an electric control disc (102) arranged in the cavity, and is characterized by further comprising
The grading drainage module is arranged on the electric control panel (102), and comprises a first-stage grounding copper bar (501) and a second-stage grounding copper bar (502), a first-stage high-frequency blocker (503) is connected in series between the first-stage grounding copper bar (501) and the second-stage grounding copper bar (502), and a first-stage protection gap (504) is connected in parallel on the first-stage high-frequency blocker (503);
and the intelligent monitoring module is arranged on the electric control panel (102) and comprises an earth resistance on-line monitoring module for detecting the earth resistance of each earth copper bar.
2. The classified current-leakage lightning protection grounding box according to claim 1, wherein the ground resistance on-line monitoring module comprises a ground resistance detection device and a switch; the switch is connected between the primary high-frequency blocker (503) and the secondary grounding copper bar (502), and the grounding resistance detection device (104) is electrically connected with the switch and controls the on-off of the switch.
3. The lightning protection grounding box for classified current drainage of claim 2, characterized in that the classified current drainage module further comprises a working grounding copper bar (514), and a three-stage high-frequency barrier (515) is connected in series between the working grounding copper bar (514) and the secondary grounding copper bar (502); and the working grounding copper bar is connected with a zero line in a power grid through an air switch (109).
4. The lightning grounding box of grading leakage current according to claim 3, wherein the intelligent monitoring module further comprises a switching value module for detecting the state of the air switch (109), the switching value module comprises an idle opening state detection device and a switching value detection module (103), the idle opening state detection device is installed at one side close to the air switch (109), and the switching value detection module (103) is electrically connected with the idle opening state detection device.
5. The lightning grounding box with graded current drainage as recited in claim 3, characterized in that the secondary grounding copper bar (502) is connected with the metal component of the optical fiber (110), and the secondary grounding copper bar (502) is connected with the N line of the three-phase electrical system in an equipotential manner through an equipotential connector (111); the working copper ground bar (514) is electrically connected with the shell of the electrical equipment.
6. The graded leakage lightning grounding box according to claim 3, wherein the switch comprises a contactor; the contactor comprises a first normally closed contact (106) and a second normally closed contact (107); the first normally closed contact (106) is connected in series on a branch where the first-stage high-frequency barrier (503) is located, and the second normally closed contact (107) is connected in series on a branch where the third-stage high-frequency barrier (515) is located; the ground resistance detection device (104) comprises a relay; the relay comprises a first normally open contact and a second normally open contact; the ground resistance monitoring device is electrically connected with the first-stage grounding copper bar (501) through a first normally open contact, and the ground resistance monitoring device is electrically connected with the second-stage grounding copper bar through a second normally open contact.
7. The lightning grounding box of classified current leakage according to claim 1, wherein the primary grounding copper bar (501) is electrically connected to a first grounding electrode (509), and the secondary grounding copper bar (502) is electrically connected to a second grounding electrode (510).
8. The classified discharging lightning grounding box according to claim 7, wherein the intelligent monitoring module further comprises a lightning stroke counting module (105) for counting lightning strokes, the lightning stroke counting module (105) comprises a counter and a primary counting sensor and a secondary counting sensor respectively connected with the counter; the primary counting sensor and the secondary counting sensor respectively measure the times of lightning strike current passing through the primary grounding copper bar (501) and the secondary grounding copper bar (502).
9. A graded leakage current lightning grounding box according to any of claims 1-8, characterized in that the box body comprises a first casing (1) and a second casing (2), the first casing (1) comprises a first cavity (12) for accommodating lightning-proof components, a first opening (13) opened on the first casing (1) and a first cover plate (11) for closing the first opening (13); the second shell (2) comprises a second cavity (22) for accommodating the wiring terminal, a second opening (23) and a third opening (24) which are arranged on the second shell (2), and a second cover plate (21) for closing the third opening (24); the first cavity (12) is in communication with the second cavity (22).
10. A graded leakage lightning protection grounding box according to claim 9, characterized in that one side of said first cover plate (11) is hinged with one side of the first shell (1); the second cover plate (21) is connected with the second shell (2) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022729644.8U CN214153969U (en) | 2020-11-23 | 2020-11-23 | Lightning protection grounding box of hierarchical earial drainage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022729644.8U CN214153969U (en) | 2020-11-23 | 2020-11-23 | Lightning protection grounding box of hierarchical earial drainage |
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| CN214153969U true CN214153969U (en) | 2021-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859201A (en) * | 2022-05-06 | 2022-08-05 | 上海晶岳电子有限公司 | Configurable EOS test method and system |
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- 2020-11-23 CN CN202022729644.8U patent/CN214153969U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859201A (en) * | 2022-05-06 | 2022-08-05 | 上海晶岳电子有限公司 | Configurable EOS test method and system |
| CN114859201B (en) * | 2022-05-06 | 2023-09-12 | 上海晶岳电子有限公司 | Configurable EOS test method and system |
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