CN114421290A - Distribution board grounding device - Google Patents
Distribution board grounding device Download PDFInfo
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- CN114421290A CN114421290A CN202210101771.4A CN202210101771A CN114421290A CN 114421290 A CN114421290 A CN 114421290A CN 202210101771 A CN202210101771 A CN 202210101771A CN 114421290 A CN114421290 A CN 114421290A
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- power relay
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- 238000009826 distribution Methods 0.000 title claims abstract description 53
- 239000004020 conductor Substances 0.000 claims abstract description 75
- 230000000007 visual effect Effects 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/16—Earthing arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Distribution Board (AREA)
Abstract
The invention provides a distribution board grounding device which comprises three-phase buses, three-phase binding posts, a short-circuit connecting sheet and a grounding wire, wherein the three-phase buses are respectively connected with the corresponding three-phase binding posts. A first conductor is arranged on the surface of each phase of wiring terminal in the three-phase wiring terminals, and a second conductor is arranged on the short-circuit connecting piece; one second conductor in the short circuit connecting sheet is connected with the first conductor arranged on the surface of the corresponding binding post in the three-phase binding post, and the short circuit connecting sheet is circumferentially and rotatably connected with the binding post. Through being connected three-phase terminal and three-phase generating line, through setting up the short circuit connection piece, make the second conductor on the short circuit connection piece and the first conductor contact each other that sets up on the three-phase terminal, make three-phase generating line short circuit, connect the second conductor with the conductor end of earth connection when the distribution board needs ground connection, the external distribution board ground subassembly of earthing terminal, three-phase generating line ground connection simultaneously has avoided having connect three earth connections with three-phase generating line simultaneously, has improved distribution board ground connection efficiency.
Description
Technical Field
The invention relates to the technical field of grounding devices, in particular to a grounding device of a distribution board.
Background
The distribution board is also called as a power distribution cabinet, consists of a cabinet body, a switch and other secondary circuit components, is power equipment for concentrating, distributing and switching electric energy, is convenient to power off and power transmission, plays a role in metering and protection, and is favorable for maintenance when a circuit fault occurs. The switchboard can be used independently, and can also be used as a matching device of mechanical equipment. As the demands on various mechanical devices increase, the fabrication and fabrication of switchboards are continually improved. The distribution board industry is a mature industry at present, and the quality of the distribution board is greatly improved due to the upgrading of electric components and the improvement of the machining level. Switchboards are generally installed at power stations, substations, and consumers of electricity with large amounts of electricity. When the switchboard needs to be overhauled, the switchboard needs to be clearly determined to have no voltage, then the three phases of the switchboard are short-circuited, and the switchboard is grounded.
The utility model provides an existing intelligent power distribution board earthing device, which comprises a fixed base, the cavity top sets up the fixed plate, the symmetry sets up head rod and second connecting rod on the fixed plate, set up the third connecting rod on the head rod, third connecting rod one end is articulated with the head rod through first articulated shaft, set up first screw hole on the first articulated shaft, set up the fourth connecting rod on the second connecting rod, fourth connecting rod one end is articulated with the second connecting rod through the second articulated shaft, set up the second screw hole on the second articulated shaft, spiro union screw rod in first screw hole and the second screw hole, articulated connecting plate between third connecting rod and the fourth connecting rod bottom, the connecting plate bottom sets up the earthed pole, be provided with three wires on the earthed pole, be provided with three binding clips on the three wires, the three-phase wire of low-voltage switch internal terminal department is cliied to three binding clips, the earthed pole is connected with the earth.
However, in the grounding device, three wires are arranged on the grounding rod, and in the actual grounding process, the three-phase wires of the switch of the distribution board need to be clamped by the jointing clamps on the three wires, so that the process is complicated, and the grounding efficiency is low.
Disclosure of Invention
The invention provides a grounding device of a distribution board, which aims to overcome the defect that the existing grounding device of the distribution board needs to be respectively connected with three phase leads by three leads.
In order to solve the technical problems, the technical scheme of the invention is as follows:
in a first aspect, the present invention provides a distribution board grounding device, which includes three-phase buses, three-phase terminals, a short-circuit connecting sheet and a grounding wire, wherein the three-phase buses are respectively connected with the corresponding three-phase terminals.
A first conductor is arranged on the surface of each phase of wiring terminal in the three-phase wiring terminals, and a second conductor is arranged on the short circuit connecting piece; and one second conductor in the short circuit connecting sheet is connected with the first conductor arranged on the surface of the corresponding binding post in the three-phase binding post, and the short circuit connecting sheet is circumferentially and rotatably connected with the binding post.
In this technical scheme, when the distribution board needs ground connection, will short circuit connection piece circumference is rotatory to short circuit connection piece perpendicular to three-phase terminal, just second conductor on the short circuit connection piece contacts with the first conductor that sets up on other terminals each other, then will the second conductor is connected to the conductor end of earth connection, the external distribution board ground connection subassembly of earthing terminal of earth connection realizes three-phase bus ground connection simultaneously.
Through being connected three-phase terminal and three-phase generating line, through setting up the short circuit connection piece, make the second conductor on the short circuit connection piece and the first conductor contact each other that sets up on the three-phase terminal, make three-phase generating line short circuit, connect the second conductor with the conductor end of earth connection when the distribution board needs ground connection, the external distribution board ground connection subassembly of earthing terminal realizes three-phase generating line ground connection simultaneously, has avoided having connect three earth connections with three-phase generating line simultaneously, has improved distribution board ground connection efficiency.
Preferably, the first conductor is provided with a first opening, the second conductor is provided with a second opening, and when the distribution board needs to be grounded, the short circuit connecting sheet penetrates through the first opening and the second opening through screws and nuts to be connected with other binding posts in the three-phase binding post.
In this technical scheme, when the distribution board needs ground connection, will short circuit connection piece circumference is rotatory to short circuit connection piece perpendicular to three-phase terminal, just second conductor on the short circuit connection piece contacts with the first conductor that sets up on other terminals each other, then passes through screw and nut first trompil and second trompil make the short circuit connection piece can be stable fixed with three-phase terminal connection, and first conductor and second conductor contact are good, make follow-up carry out three-phase bus ground connection simultaneously and can stably go on.
Preferably, the ground switch further comprises a locking device for locking a ground terminal of the ground line.
In the technical scheme, after the grounding wire is grounded, the grounding end of the grounding wire is locked by the locking device, so that the grounding wire is kept in a grounding state, and the grounding safety and reliability are improved.
Preferably, the earthing switch further comprises a drawer box, and the three-phase bus, the three-phase binding post and the short circuit connecting sheet are arranged in the drawer box.
Among this technical scheme, set up three-phase generating line, three-phase terminal and short circuit connection piece in the drawer case, need not unpack apart distribution board seal baffle and go to test the electricity, can improve work efficiency, reduce the risk of maloperation.
Preferably, earthing switch still is provided with tests electric installation, test electric installation and include power relay KA1And power relay KA2And power relay KA3And an audible and visual alarm; power relay KA1And power relay KA2And power relay KA3The three-phase buses are electrically connected in a one-to-one correspondence manner; power relay KA1Normally open contact KA11And power relay KA2Normally open contact KA21And power relay KA3Normally open contact KA31And the sound and light alarm is respectively connected with the sound and light alarm.
In the technical scheme, any phase of the bus is electrified, the normally open contact of any power supply relay is connected, and the audible and visual alarm is excited to realize audible and visual alarm.
Preferably, the electricity testing device further comprises a voltage relay KV, and a normally open contact KV of the voltage relay KV0And the audible and visual alarm is connected with the audible and visual alarm.
In the technical scheme, any phase of the bus is electrified, the normally open contact of the voltage relay is connected, and the audible and visual alarm is excited to realize audible and visual alarm.
Preferably, theThe electroscope device also comprises a passive indicator light; power relay KA1Normally closed contact KA12And power relay KA2Normally closed contact KA22And power relay KA3Normally closed contact KA32Respectively connected with the passive indicator light.
In this technical scheme, if three-phase bus does not have voltage signal, power relay's normally closed contact is closed, and passive pilot lamp is bright, shows to possess the ground connection condition this moment.
Preferably, the power relay KA1And power relay KA2And power relay KA3Fuses are respectively connected in series with the bus.
Preferably, the audible and visual alarm comprises a buzzer and an active indicator light.
Preferably, the switchboard is a 400V switchboard.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: according to the invention, the three-phase wiring terminal is connected with the three-phase bus, the short-circuit connecting sheet is arranged, so that the second conductor on the short-circuit connecting sheet is contacted with the first conductor on the three-phase wiring terminal, the three-phase bus is short-circuited, when the distribution board needs to be grounded, the conductor end of the grounding wire is connected with the second conductor, and the grounding end is externally connected with the distribution board grounding assembly, so that the three-phase bus is grounded simultaneously, the three-phase bus is prevented from being connected with three grounding wires simultaneously, and the distribution board grounding efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the switchboard grounding device in embodiment 1.
Fig. 2 is a schematic structural view of the grounding state of the grounding device of the distribution board in embodiment 1.
Fig. 3 is a schematic structural view of the grounding state of the grounding device of the distribution board in embodiment 2.
Fig. 4 is a schematic structural view of the grounding state of the grounding device of the distribution board in embodiment 3.
Fig. 5 is a schematic diagram of an electroscope of embodiment 3.
The three-phase bus comprises a 1-three-phase bus, a 2-three-phase wiring terminal, a 201-first conductor, a 2011-first opening, a 3-short circuit connecting sheet, a 301-second conductor, a 3011-second opening, a 4-grounding wire, a 401-conductor end of the grounding wire, a 402-grounding end of the grounding wire, a 5-drawer box, a 6-voltmeter, a 7-audible and visual alarm and an 8-passive indicator lamp.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
the technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
Referring to fig. 1 and 2, the present embodiment provides a distribution board grounding device, which includes a three-phase bus 1, three-phase terminals 2, a short-circuit connecting sheet 3, and a grounding wire 4, wherein the three-phase bus 1 is connected to the corresponding three-phase terminals 2 respectively. A first conductor 201 is arranged on the surface of each phase of wiring terminal in the three-phase wiring terminal 2, and a second conductor 301 is arranged on the short circuit connecting sheet 3; one second conductor 301 of the short-circuit connecting piece 3 is connected with the first conductor 201 arranged on the surface of the corresponding terminal in the three-phase terminal 2, and the short-circuit connecting piece 3 is circumferentially and rotatably connected with the terminal, as shown in fig. 1, fig. 1 is a structural schematic diagram of the distribution board grounding device in the embodiment.
In this embodiment, the first conductor 201 is provided with a first opening 2011, the second conductor 301 is provided with a second opening 3011, and the short-circuit connecting piece 3 passes through the first opening 2011 and the second opening 3011 through a screw and a nut to be connected with other terminals in the three-phase terminal 2.
In a specific implementation process, when the distribution board needs to be grounded, the short-circuit connecting piece 3 is circumferentially rotated until the short-circuit connecting piece 3 is perpendicular to the three-phase terminal 2, the second conductor 301 on the short-circuit connecting piece 3 is in mutual contact with the first conductor 201 arranged on other terminals, and then the first opening 2011 and the second opening 3011 are penetrated through screws and nuts, so that the short-circuit connecting piece 3 can be stably connected and fixed with the three-phase terminal 2, the first conductor 201 and the second conductor 301 are in good contact, and the subsequent three-phase bus 1 grounding can be stably performed at the same time, as shown in fig. 2, fig. 2 is a structural schematic diagram of a grounding state of the distribution board grounding device in the embodiment.
Through being connected three-phase terminal 2 and three-phase generating line 1, through setting up short circuit connection piece 3, make second conductor 301 on the short circuit connection piece 3 and the first conductor 201 that sets up on the three-phase terminal 2 contact each other, make three-phase generating line 1 short circuit, connect second conductor 301 with the conductor end 401 of earth connection, the external distributor grounding assembly of earthing terminal, realize three-phase generating line 1 and ground connection simultaneously, three earth connections 4 have been avoided simultaneously connecting three-phase generating line 1, distributor grounding efficiency has been improved.
Example 2
Referring to fig. 3, the present embodiment provides a distribution board grounding device, which includes a three-phase bus 1, three-phase terminals 2, a short-circuit connecting sheet 3, and a grounding wire 4, wherein the three-phase bus 1 is connected to the corresponding three-phase terminals 2 respectively. A first conductor 201 is arranged on the surface of each phase of wiring terminal in the three-phase wiring terminal 2, and a second conductor 301 is arranged on the short circuit connecting sheet 3; one second conductor 301 of the short-circuit connecting sheet 3 is connected with a first conductor 201 arranged on the surface of a corresponding binding post of the three-phase binding post 2, and the short-circuit connecting sheet 3 is circumferentially and rotatably connected with the binding post.
In this embodiment, the grounding switch further comprises a locking device for locking the grounding terminal 402 of the grounding wire 4.
In this embodiment, the earthing switch further includes a drawer box 5, and the three-phase bus 1, the three-phase terminal 2 and the short circuit connection piece 3 are arranged in the drawer box 5.
As shown in fig. 3, fig. 3 is a schematic structural diagram of a grounding state of the grounding device of the distribution board in this embodiment, in a specific implementation process, when the distribution board needs to be grounded, the short-circuit connecting piece 3 is rotated circumferentially until the short-circuit connecting piece 3 is perpendicular to the three-phase terminal 2, the second conductor 301 on the short-circuit connecting piece 3 contacts with the first conductor 201 on the other terminal, then the conductor end 401 of the grounding wire is connected to the second conductor 301, the grounding end 402 of the grounding wire 4 is externally connected to a grounding assembly of the distribution board, so as to achieve simultaneous grounding of the three-phase bus 1, and after the grounding wire 4 is grounded, the grounding end 402 of the grounding wire 4 is locked by using a locking device, so that the grounding wire 4 is maintained in a grounding state, and the grounding safety and reliability are improved. When traditional distribution board generating line need carry out ground connection operation, need unpack apart the sealed baffle of distribution board and carry out the manual work and test the electricity after hanging earth connection 4 again, complex operation consumes a large amount of manpower and materials, efficiency is not high, and the both ends that articulate earth connection 4 appear artificially easily and demolish or articulate the condition that the unstability drops, bring huge potential safety hazard for the security of ground connection. Set up three-phase generating line 1, three-phase terminal 2 and short circuit connection piece 3 in drawer case 5, need not unpack apart distribution board seal baffle and test the electricity, can improve work efficiency, reduce the risk of maloperation. Through being connected three-phase terminal 2 and three-phase generating line 1, through setting up short circuit connection piece 3, make second conductor 301 on the short circuit connection piece 3 and the first conductor 201 that sets up on the three-phase terminal 2 contact each other, make three-phase generating line 1 short circuit, connect second conductor 301 with the conductor end 401 of earth connection, the external distributor grounding assembly of earthing terminal, realize three-phase generating line 1 and ground connection simultaneously, three earth connections 4 have been avoided simultaneously connecting three-phase generating line 1, the distributor grounding efficiency has further been improved.
Example 3
In this embodiment, the distribution board grounding device further includes an electricity testing device, as shown in fig. 4, fig. 4 is a schematic structural diagram of a grounding state of the distribution board grounding device in this embodiment, and the electricity testing device includes a power relay KA1And power relay KA2And power relay KA3The audible and visual alarm 7 comprises a buzzer and an active indicator light; power relay KA1And power relay KA2And power relay KA3The three-phase buses are respectively and correspondingly electrically connected with the three-phase buses 1 one by one;
power relay KA1Normally open contact KA11And power relay KA2Normally open contact KA21And power relay KA3Normally open contact KA31Are respectively connected with the audible and visual alarm 7.
In this embodiment, the electricity testing device further includes a voltage relay KV, and the voltage relay KV is normally connected to the voltage relay KVOpen contact KV0Is connected with the audible and visual alarm 7. The electroscope device further comprises a passive indicator light 8; power relay KA1Normally closed contact KA12And power relay KA2Normally closed contact KA22And power relay KA3Normally closed contact KA32Respectively connected with the passive indicator light 8. Power relay KA1And power relay KA2And power relay KA3Fuse FU is respectively connected in series between the bus and the bus1、FU2And FU3。
As shown in FIG. 5, FIG. 5 is a schematic diagram of the current testing device in this embodiment, in the specific implementation process, the primary circuit of the grounding device of the power distribution board is connected to the three-phase bus 1, and the primary circuit passes the voltage signal through the fuses FU respectively1、FU2And FU3Respectively lead to power supply relay KA1、KA2、KA3And a voltage relay KV, if any phase of the bus is electrified, a normally open contact of any power supply relay or voltage relay is connected, the voltmeter has a reading, and the audible and visual alarm 7 is excited to realize audible and visual alarm, which indicates that the grounding condition is not available at the moment.
If the three-phase bus 1 has no voltage signal, the voltmeter 6 has no reading, and the power relay KA1、KA2、KA3And a normally open contact of the voltage relay KV is disconnected, and the audible and visual alarm 7 does not give an alarm. And closing a normally closed contact of the power supply relay, and lighting a passive indicator lamp 8 to indicate that the power supply relay has a grounding condition. The specific grounding process is as follows:
will 3 circumference of short circuit connection piece is rotatory to 3 perpendicular to three-phase terminal 2 of short circuit connection piece, just second conductor 301 on the short circuit connection piece 3 and the first conductor 201 mutual contact that sets up on other terminals, then pass through screw and nut first trompil 2011 and second trompil 3011 make short circuit connection piece 3 can be stable be connected fixedly with three-phase terminal 2, first conductor 201 and second conductor 301 contact well, make follow-up carry on three-phase bus 1 ground connection simultaneously can stably go on, then connect second conductor 301 with the conductor end 401 of earth connection, the external distributor ground connection subassembly of earthing terminal, realize three-phase bus 1 ground connection simultaneously, avoided having connect three earth connection 4 with three-phase bus 1 simultaneously, improved ground connection efficiency.
Similarly, under the condition that the three-phase bus 1 is electrified, the normally-closed node is disconnected, and the passive indicator lamp 8 is turned off, which indicates that the grounding condition is not available at the moment. Therefore, the bus electricity testing function is realized through double detection and indication of the audible and visual alarm 7 and the passive indicator lamp 8.
The terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A distribution board grounding device, wherein a distribution board comprises a three-phase bus (1) and a grounding wire (4), and is characterized by comprising three-phase binding posts (2) and a short circuit connecting piece (3), wherein the three-phase bus (1) is respectively connected with the corresponding three-phase binding posts (2);
a first conductor (201) is arranged on the surface of each phase of wiring terminal in the three-phase wiring terminals (2), and a second conductor (301) is arranged on the short circuit connecting sheet (3); one second conductor (301) in the short circuit connecting sheet (3) is connected with a first conductor (201) arranged on the surface of the corresponding terminal in the three-phase terminal (2), and the short circuit connecting sheet (3) is circumferentially and rotatably connected with the terminal;
when the distribution board needs to be grounded, the short circuit connecting piece (3) is rotated to the short circuit connecting piece (3) in the circumferential direction and is perpendicular to the three-phase wiring terminal (2), the second conductor (301) on the short circuit connecting piece (3) is in mutual contact with the first conductors (201) arranged on other wiring terminals, then the conductor end (401) of the grounding wire is connected with the second conductor (301), the grounding end (402) of the grounding wire (4) is externally connected with a distribution board grounding assembly, and the three-phase bus (1) is grounded simultaneously.
2. The distribution board grounding arrangement of claim 1, wherein the first conductor (201) has a first opening (2011) disposed thereon, and the second conductor (301) has a second opening (3011) disposed thereon; when the distribution board needs to be grounded, the short circuit connecting sheet (3) penetrates through the first opening (2011) and the second opening (3011) through screws and nuts to be connected with other binding posts in the three-phase binding post (2).
3. The switchboard grounding device of claim 1, characterized in that said grounding switch also comprises locking means for locking the grounding (402) of the grounding line (4).
4. The switchboard earthing device according to claim 1, characterized in that said earthing switch also comprises a drawer box (5), said three-phase busbar (1), three-phase terminal stud (2) and short-circuit connection pad (3) being arranged inside the drawer box (5).
5. The distribution board grounding device of any of claims 1-4, wherein the grounding switch is further provided with an electrical testing device comprising a power relay KA1And power relay KA2And power relay KA3And an audible and visual alarm (7);
power relay KA1And power relay KA2And power relay KA3The three-phase buses (1) are electrically connected in a one-to-one correspondence manner;
power relay KA1Normally open contact KA11And power relay KA2Normally open contact KA21And power relay KA3Normally open contact KA31Are respectively connected with the audible and visual alarm (7).
6. According to claim5 the distribution board grounding device is characterized in that the electricity testing device also comprises a voltage relay KV, and a normally open contact KV of the voltage relay KV0Is connected with the audible and visual alarm (7).
7. The switchboard grounding device of claim 5, characterized in that said electroscopic device also comprises a passive indicator light (8); power relay KA1Normally closed contact KA12And power relay KA2Normally closed contact KA22And power relay KA3Normally closed contact KA32Are respectively connected with the passive indicator lamps (8).
8. The distribution board grounding apparatus of claim 5, wherein the power relay KA1And power relay KA2And power relay KA3Fuses are respectively connected in series with the bus.
9. The switchboard earthing device according to claim 5, characterized in that said audible and visual alarm (7) comprises a buzzer and an active indicator light.
10. The panelboard grounding apparatus of claim 1, wherein the panelboard is a 400V panelboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210101771.4A CN114421290A (en) | 2022-01-27 | 2022-01-27 | Distribution board grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210101771.4A CN114421290A (en) | 2022-01-27 | 2022-01-27 | Distribution board grounding device |
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| Publication Number | Publication Date |
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| CN114421290A true CN114421290A (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210101771.4A Pending CN114421290A (en) | 2022-01-27 | 2022-01-27 | Distribution board grounding device |
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| CN (1) | CN114421290A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205646196U (en) * | 2016-05-30 | 2016-10-12 | 国家电网公司 | Looped netowrk cabinet earthing device |
| CN106803637A (en) * | 2017-03-22 | 2017-06-06 | 国网江苏省电力公司检修分公司 | A kind of intermediate transit head for being applied to 1000 kilovolts of ultra-high voltage transformer station and 500 KV grounding wires |
| CN206633846U (en) * | 2017-03-07 | 2017-11-14 | 中铁十七局集团电气化工程有限公司 | Contact net electrification state monitoring apparatus |
| CN208861555U (en) * | 2018-06-21 | 2019-05-14 | 广东电网有限责任公司 | Live connection of ground wire body-sensing device |
-
2022
- 2022-01-27 CN CN202210101771.4A patent/CN114421290A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205646196U (en) * | 2016-05-30 | 2016-10-12 | 国家电网公司 | Looped netowrk cabinet earthing device |
| CN206633846U (en) * | 2017-03-07 | 2017-11-14 | 中铁十七局集团电气化工程有限公司 | Contact net electrification state monitoring apparatus |
| CN106803637A (en) * | 2017-03-22 | 2017-06-06 | 国网江苏省电力公司检修分公司 | A kind of intermediate transit head for being applied to 1000 kilovolts of ultra-high voltage transformer station and 500 KV grounding wires |
| CN208861555U (en) * | 2018-06-21 | 2019-05-14 | 广东电网有限责任公司 | Live connection of ground wire body-sensing device |
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