CN111864539B - Lightning arrester - Google Patents

Lightning arrester Download PDF

Info

Publication number
CN111864539B
CN111864539B CN202010818373.5A CN202010818373A CN111864539B CN 111864539 B CN111864539 B CN 111864539B CN 202010818373 A CN202010818373 A CN 202010818373A CN 111864539 B CN111864539 B CN 111864539B
Authority
CN
China
Prior art keywords
plate
sliding
fixedly connected
insulating
magnetic core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010818373.5A
Other languages
Chinese (zh)
Other versions
CN111864539A (en
Inventor
侯英晗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202010818373.5A priority Critical patent/CN111864539B/en
Publication of CN111864539A publication Critical patent/CN111864539A/en
Application granted granted Critical
Publication of CN111864539B publication Critical patent/CN111864539B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00Devices providing for corona discharge
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/58Electrically-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
    • H01R4/66Connections with the terrestrial mass, e.g. earth plate, earth pin

Abstract

The invention relates to the technical field of power electricity and discloses a lightning arrester, which comprises a front panel, a bottom plate, a sliding frame plate and a magnetic core, wherein the front side of the bottom plate is fixedly connected with the front panel, the back side of the bottom plate is fixedly connected with a back panel, the middle upper part of the front side of the back panel is fixedly connected with the sliding frame plate, one side of the upper surface of the bottom plate is fixedly connected with the magnetic core through a magnetic core supporting plate, an electromagnetic induction coil is wound on the outer surface of the magnetic core in a surrounding mode, a through hole is formed in the center of the upper surface of the magnetic core, a magnetic core sliding rod is inserted in the through hole, and a magnet is fixedly connected to the top end of the magnetic core sliding rod. This lightning arrester, through the mode that adopts electromagnetic induction, when the device internal current increase suddenly, can make electromagnetic induction coil produce powerful magnetic force to promote magnet and make insulation board connecting plate downstream, and then electrically conductive gyro wheel breaks away from the slide that electrocutes, makes whole device outage, thereby solves the harm that the thunder and lightning caused domestic appliance and personnel.

Description

Lightning arrester
Technical Field
The invention relates to the technical field of power electricity, in particular to a lightning arrester.
Background
In the rain cloud with lightning generation and electrification, when positive and negative charges are respectively accumulated at different parts of the same cloud or in different clouds, an atmospheric electric field is generated due to different electric charge amounts or different polarities accumulated at different parts in the same thunderstorm or between different clouds, when the atmospheric electric field strength reaches the value capable of puncturing air, a strong discharge phenomenon occurs, lightning occurs, the lightning is called cloud lightning or cloud-to-cloud lightning, when the electrified cloud layer moves to be close to the ground or a building, due to electrostatic induction, the ground or the building surface generates opposite charges, and with the increase of the electric charge amount or the shortening of the distance between the cloud and the ground or the building, the electric field strength between the electrified cloud layer and the ground or the building can puncture the air insulation strength, instant discharge is started, and the lightning (cloud-to-ground lightning) also occurs, at present, the lightning resistance mode adopted conventionally is that the lightning is guided to the ground through a low channel, thereby realize the mode of lightning-arrest, but this kind of device is when suffering the thunderbolt, if someone is using electricity near the device still will lead the thunder and lightning to the electric wire on, so present lightning arrester uses inconveniently at present, is unfavorable for using widely.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a lightning arrester, which solves the problems that the lightning arresting mode adopted in the prior art is mostly to guide the lightning to the ground through a low-resistance channel so as to realize the lightning arresting mode, but when the lightning arrester is struck by lightning, if someone nearby the lightning arrester still guides the lightning to a wire when the electricity is used, the existing lightning arrester is inconvenient to use at present and is not beneficial to popularization and use.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a lightning arrester, includes positive panel, bottom plate, slide bracket board and magnetic core, the positive fixedly connected with positive panel of bottom plate, the back fixedly connected with backplate of bottom plate, the positive well upper portion fixedly connected with slide bracket board of backplate, there is the side of bottom plate upper surface to pass through magnetic core backup pad fixedly connected with magnetic core.
Preferably, the outer surface of the magnetic core is surrounded by an electromagnetic induction coil, a through hole is formed in the center of the upper surface of the magnetic core, a magnetic core slide rod is inserted in the through hole, a magnet is fixedly connected to the top end of the magnetic core slide rod, a sliding plate is movably connected to the upper surface of the magnet, a limiting spring is arranged between the opposite surfaces of the sliding frame plate and the magnet, a sliding dowel bar is movably connected to the top end of the sliding plate, the sliding dowel bar is connected with the back panel in a sliding mode through a slide rod column, and an execution rod is movably connected to the left end of the sliding dowel bar.
Preferably, a vertical insulating plate is arranged at the left side of the electromagnetic induction coil, the vertical insulating plate is fixedly connected with the bottom plate through a vertical insulating plate support frame, the outer surface of the vertical insulating plate is connected with an insulating sliding plate in a sliding manner, rectangular through holes are formed in the front side and the rear side of the left side surface of the vertical insulating plate, an electric shock sliding plate is inserted in each through hole, the left side of the lower surface of the insulating sliding plate is fixedly connected with a sliding insulating plate, the bottom of the right side surface of the sliding insulating plate is rotatably connected with a conductive roller support through a conductive roller support connecting rod, the top end of the conductive roller support is rotatably connected with a conductive roller, the conductive roller is slidably connected with the electric shock sliding plate, the middle part of the conductive roller support is fixedly connected with a conductive swinging rod, a chute is formed in the left side surface of the sliding insulating plate, the inner wall of the chute is slidably connected with the conductive swinging rod, and a conductive spring is arranged between the opposite surfaces of the conductive roller support and the sliding insulating plate, the conductive spring surrounds the outer surface of the conductive oscillating rod.
Preferably, the left of perpendicular insulation board is provided with the electric capacity piece backup pad, and the lower fixed surface of electric capacity piece backup pad is connected with insulating guide arm, the bottom plate is located the below of electric capacity piece backup pad and has seted up the through-hole to through-hole inner wall and insulating guide arm sliding connection are provided with insulating spring between the opposite face of electric capacity piece backup pad and bottom plate of the institute, and insulating spring encircles at insulating guide arm surface, the left end and the right-hand member of both sides are fixedly connected with left end electric capacity piece and right-hand member electric capacity piece respectively around electric capacity piece backup pad upper surface to the left surface of rear end left end electric capacity piece and front end left end electric capacity piece is fixedly connected with zero line output and live wire output respectively.
Preferably, the top of left end electric capacity piece and right-hand member electric capacity piece is provided with the thunder piece, and the last fixed surface of thunder piece is connected with thunder ring piece support, and thunder ring piece support passes through insulation board connecting plate fixed connection with insulating slide, insulation board connecting plate and executive rod swing joint, right-hand member electric capacity piece passes through the wire electricity with electrically conductive swinging arms and is connected, two the bottom of electric shock slide right flank is connected with zero line input and live wire input respectively electricity, electromagnetic induction coil is parallelly connected with zero line input and live wire input.
Compared with the prior art, the lightning arrester has the following beneficial effects.
1. This lightning arrester, through the mode that adopts electromagnetic induction, when the device internal current increase suddenly, can make electromagnetic induction coil produce powerful magnetic force to promote magnet and make insulation board connecting plate downstream, and then electrically conductive gyro wheel breaks away from the slide that electrocutes, makes whole device outage, thereby solves the harm that the thunder and lightning caused domestic appliance and personnel.
2. This lightning arrester, characteristic through the condenser, lead to the alternating current and hinder the direct current, if electrically conductive gyro wheel damages, because the thunder and lightning belongs to instantaneous current, so there is not the direction, the electric current can't lead to the condenser that left end electric capacity piece and right-hand member electric capacity piece are constituteed, lead to thunder and lightning piece downstream under the promotion of insulation board connecting plate, thereby contact with right-hand member electric capacity piece, lead to ground through positive panel with the thunder and lightning, overall structure passes through mechanical mode lightning protection, avoided leading to lightning protection failure because of electronic components damages, cause unnecessary casualties and loss of property.
Drawings
Fig. 1 is an exploded view of the overall structure of the present invention.
FIG. 2 is a schematic view of the structure of the present invention.
FIG. 3 is a schematic view of the internal structure of the present invention.
FIG. 4 is an enlarged view of the structure of the vertical insulating plate of the present invention.
Fig. 5 is a schematic diagram of the internal structure of the present invention.
FIG. 6 is an enlarged view of the structure of the vertical insulating plate according to the present invention.
In the figure: 1-a front panel; 101-a base plate; 2-a back panel; 201-sliding rod column; 3-a sliding frame plate; 4-an electromagnetic induction coil; 401-magnetic core support plate; 402-a magnet; 403-a limit spring; 404-a sliding plate; 405-sliding dowel bars; 406-an actuator rod; 407-magnetic core; 408-a magnetic core slide bar; 5-vertical insulating plates; 501-an insulating sliding plate; 502-electric shock slide; 503-vertical insulating board support frame; 504-insulating board connecting board; 505-lightning-inducing ring sheet support; 506-lightning slice; 507-left end capacitor plate; 508-right-end capacitor plate; 509-capacitor plate support plate; 510-sliding an insulating plate; 511-insulating spring; 512-insulating guide rod; 513-conductive rollers; 514-conductive roller support; 515-conductive roller bracket connection bar; 516-a conductive spring; 517-conductive oscillating lever; 6-live wire output end; 601-live input; 7-zero line output end; 701-neutral input.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6, the present invention provides a technical solution: the lightning arrester comprises a front panel 1, a bottom plate 101, a sliding frame plate 3 and a magnetic core 407, wherein the front surface of the bottom plate 101 is fixedly connected with the front panel 1, the back surface of the bottom plate 101 is fixedly connected with a back panel 2, the front middle upper part of the back panel 2 is fixedly connected with the sliding frame plate 3, and the side of the upper surface of the bottom plate 101 is fixedly connected with the magnetic core 407 through a magnetic core supporting plate 401.
The outer surface of magnetic core 407 has surrounded electromagnetic induction coil 4, the through-hole has been seted up at the center of magnetic core 407 upper surface, and it has magnetic core slide bar 408 to peg graft in the through-hole, the top fixedly connected with magnet 402 of magnetic core slide bar 408, the upper surface swing joint of magnet 402 has sliding plate 404, be provided with spacing spring 403 between the opposite face of slide plate 3 and magnet 402, the top swing joint of sliding plate 404 has slip dowel steel 405, and slip dowel steel 405 passes through the sliding connection of dowel steel post 201 with backplate 2, the left end swing joint of slip dowel steel 405 has executive lever 406.
The left side of the electromagnetic induction coil 4 is provided with a vertical insulating plate 5, the vertical insulating plate 5 is fixedly connected with the bottom plate 101 through a vertical insulating plate support 503, the outer surface of the vertical insulating plate 5 is connected with an insulating sliding plate 501 in a sliding way, the front side and the rear side of the left side of the vertical insulating plate 5 are both provided with rectangular through holes, in addition, an electric shock sliding plate 502 is inserted and connected in the through holes, the left side of the lower surface of the insulating sliding plate 501 is fixedly connected with a sliding insulating plate 510, the bottom of the right side of the sliding insulating plate 510 is rotatably connected with a conductive roller support 514 through a conductive roller support connecting rod 515, the top end of the conductive roller support 514 is rotatably connected with a conductive roller 513, in addition, the conductive roller 513 is slidably connected with the electric shock sliding plate 502, the middle part of the conductive roller support 514 is fixedly connected with a conductive swinging rod 517, the left side of the sliding insulating plate 510 is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected with the conductive swinging rod 517, a conductive spring 516 is disposed between the opposite surfaces of the conductive roller bracket 514 and the sliding insulating plate 510, and the conductive spring 516 is wound around the outer surface of the conductive swinging rod 517.
Perpendicular insulation board 5's left is provided with capacitor piece backup pad 509, capacitor piece backup pad 509's lower surface fixedly connected with insulating guide rod 512, the through-hole has been seted up to the below that bottom plate 101 is located capacitor piece backup pad 509, and through-hole inner wall and insulating guide rod 512 sliding connection, be provided with insulating spring 511 between the opposite face of capacitor piece backup pad 509 and bottom plate 101, insulating spring 511 encircles at insulating guide rod 512 surface, left end and the right-hand member of both sides are fixedly connected with left end capacitor piece 507 and right-hand member capacitor piece 508 respectively around capacitor piece backup pad 509 upper surface, and the left surface of rear end left end capacitor piece 507 and front end left end capacitor piece 507 is fixedly connected with zero line output 7 and live wire output 6 respectively.
A lightning striking sheet 506 is arranged above the left-end capacitor sheet 507 and the right-end capacitor sheet 508, a lightning striking ring sheet support 505 is fixedly connected to the upper surface of the lightning striking sheet 506, the lightning striking ring sheet support 505 is fixedly connected with the insulating sliding plate 501 through an insulating plate connecting plate 504, the insulating plate connecting plate 504 is movably connected with the actuating rod 406, the right-end capacitor sheet 508 is electrically connected with the conductive swinging rod 517 through a wire, the bottoms of the right sides of the two electric shock sliding plates 502 are respectively electrically connected with a zero line input terminal 701 and a live line input terminal 601, and the electromagnetic induction coil 4 is connected with the zero line input terminal 701 and the live line input terminal 601 in parallel.
When the lightning protection device is used, a user connects the zero line input end 701 and the live line input end 601 with an outdoor power supply, connects the zero line output end 7 and the live line output end 6 with an electric appliance, when an external power supply is struck by lightning, strong current can be led into the electromagnetic induction coil 4 under the guidance of the zero line input end 701 and the zero line output end 708, so that the electromagnetic induction coil 4 generates strong magnetic force, the magnet 402 is pushed to enable the insulating plate connecting plate 504 to move downwards, the conductive roller 513 is separated from the electric shock sliding plate 502, the effect of automatically cutting off the power supply is achieved, through the characteristics of the capacitor, alternating resistance direct current is conducted, if the conductive roller 513 is damaged, as the lightning belongs to instantaneous current, no direction exists, the current cannot pass through the capacitor formed by the left end capacitor piece 507 and the right end capacitor piece 508, the lightning striking piece 506 moves downwards under the pushing of the insulating plate connecting plate 504, so as to be contacted with the right end capacitor piece 508, the lightning is guided to the ground through the front panel 1, so that the whole device realizes the double-protection lightning protection function.
In summary, the lightning arrester adopts the electromagnetic induction mode, when the current in the lightning arrester suddenly increases, the electromagnetic induction coil 4 can generate strong magnetic force, so as to push the magnet 402 to make the insulating board connecting board 504 move downwards, and further the conductive roller 513 is separated from the electric shock sliding board 502, so as to power off the whole lightning arrester, thereby solving the problem of the harm of lightning to household appliances and personnel, through the characteristics of the capacitor, the alternating current resistance direct current is switched on, if the conductive roller 513 is damaged, because the lightning belongs to instantaneous current, no direction exists, the current can not pass through the capacitor formed by the left end capacitor plate 507 and the right end capacitor plate 508, the lightning arrester 506 moves downwards under the push of the insulating board connecting board 504, thereby contacting with the right end capacitor plate 508, the lightning is guided to the ground through the front panel 1, the whole structure adopts the mechanical mode, so as to avoid the failure of lightning protection caused by the damage of electronic components, causing unnecessary casualties and property loss.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
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 (2)

1. The utility model provides a lightning arrester, includes positive panel (1), bottom plate (101), slide bracket board (3) and magnetic core (407), its characterized in that: the front surface of the bottom plate (101) is fixedly connected with a front panel (1), the back surface of the bottom plate (101) is fixedly connected with a back panel (2), the middle upper part of the front surface of the back panel (2) is fixedly connected with a sliding frame plate (3), and the right side of the upper surface of the bottom plate (101) is fixedly connected with a magnetic core (407) through a magnetic core support plate (401);
an electromagnetic induction coil (4) is wound around the outer surface of the magnetic core (407), a through hole is formed in the center of the upper surface of the magnetic core (407), a magnetic core sliding rod (408) is inserted into the through hole, a magnet (402) is fixedly connected to the top end of the magnetic core sliding rod (408), a sliding plate (404) is movably connected to the upper surface of the magnet (402), a limiting spring (403) is arranged between the opposite surfaces of the sliding frame plate (3) and the magnet (402), a sliding dowel bar (405) is movably connected to the top end of the sliding plate (404), the sliding dowel bar (405) is slidably connected with the back panel (2) through a dowel column (201), and an actuating rod (406) is movably connected to the left end of the sliding dowel bar (405);
a vertical insulating plate (5) is arranged on the left side of the electromagnetic induction coil (4), the vertical insulating plate (5) is fixedly connected with the bottom plate (101) through a vertical insulating plate supporting frame (503), an insulating sliding plate (501) is connected to the outer surface of the vertical insulating plate (5) in a sliding manner, rectangular through holes are formed in the front side and the rear side of the left side of the vertical insulating plate (5), an electric shock sliding plate (502) is inserted in each through hole, a sliding insulating plate (510) is fixedly connected to the left side of the lower surface of the insulating sliding plate (501), a conductive roller bracket (514) is rotatably connected to the bottom of the right side of the sliding insulating plate (510) through a conductive roller bracket connecting rod (515), a conductive roller (513) is rotatably connected to the top end of the conductive roller bracket (514), the conductive roller (513) is slidably connected with the electric shock sliding plate (502), and a conductive swinging rod (517) is fixedly connected to the middle of the conductive roller bracket (514), a sliding groove is formed in the left side face of the sliding insulating plate (510), the inner wall of the sliding groove is connected with the conductive swinging rod (517) in a sliding mode, a conductive spring (516) is arranged between the conductive roller support (514) and the opposite face of the sliding insulating plate (510), and the conductive spring (516) surrounds the outer surface of the conductive swinging rod (517);
a lightning striking sheet (506) is arranged above the left end capacitor sheet (507) and the right end capacitor sheet (508), the upper surface of the lightning striking sheet (506) is fixedly connected with a lightning striking ring sheet support (505), the lightning striking ring sheet support (505) is fixedly connected with an insulating sliding plate (501) through an insulating plate connecting plate (504), the insulating plate connecting plate (504) is movably connected with an actuating rod (406), the right end capacitor sheet (508) is electrically connected with a conductive swinging rod (517) through a lead, the bottoms of the right side surfaces of the two electric shock sliding plates (502) are respectively electrically connected with a zero line input end (701) and a live line input end (601), an electromagnetic induction coil (4) is connected with the zero line input end (701) and the live line input end (601) in parallel, when the electromagnetic induction coil (4) generates magnetic force, the insulating plate connecting plate (504) moves downwards by pushing a magnet (402), so that a conductive roller (513) is separated from the electric shock sliding plate (502), and completing the power-off.
2. A lightning protection device according to claim 1, characterized in that: the left of perpendicular insulation board (5) is provided with capacitor piece backup pad (509), and the lower fixed surface of capacitor piece backup pad (509) is connected with insulating guide arm (512), bottom plate (101) are located the below of capacitor piece backup pad (509) and have seted up the through-hole to through-hole inner wall and insulating guide arm (512) sliding connection, be provided with insulating spring (511) between the opposite face of capacitor piece backup pad (509) and bottom plate (101), insulating spring (511) encircle at insulating guide arm (512) surface, the left end and the right-hand member of both sides are fixedly connected with left end electric capacity piece (507) and right-hand member electric capacity piece (508) respectively before capacitor piece backup pad (509) upper surface to the left surface of rear end left end electric capacity piece (507) and front end left end electric capacity piece (507) is fixedly connected with zero line output (7) and live wire output (6) respectively.
CN202010818373.5A 2020-08-14 2020-08-14 Lightning arrester Active CN111864539B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010818373.5A CN111864539B (en) 2020-08-14 2020-08-14 Lightning arrester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010818373.5A CN111864539B (en) 2020-08-14 2020-08-14 Lightning arrester

Publications (2)

Publication Number Publication Date
CN111864539A CN111864539A (en) 2020-10-30
CN111864539B true CN111864539B (en) 2022-05-06

Family

ID=72969838

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010818373.5A Active CN111864539B (en) 2020-08-14 2020-08-14 Lightning arrester

Country Status (1)

Country Link
CN (1) CN111864539B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117142663B (en) * 2023-11-01 2023-12-26 湖南科技大学 Sewage organic waste treatment device for carbon neutralization

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101057958B1 (en) * 2010-07-30 2011-08-18 김병호 Switch for prevention of inrush current shock and cut-off standby power
CN104201646B (en) * 2014-08-26 2017-07-25 国家电网公司 A kind of circuit has a power failure, earth leakage protective device
CN209169952U (en) * 2018-12-17 2019-07-26 天津卓一科技有限公司 A kind of surge protector of low-voltage distribution system

Also Published As

Publication number Publication date
CN111864539A (en) 2020-10-30

Similar Documents

Publication Publication Date Title
CN105261523B (en) Relay zero-crossing on and off control method and control system
CN203981729U (en) A kind of device of realizing the not power-off of plug electric energy meter
CN206340494U (en) A kind of de- bridge-type magnetic latching relay of use microswitch
CN102044388B (en) Static contact structure of moulded case circuit breaker
CN111864539B (en) Lightning arrester
CN102931647B (en) A kind of surge current suppression circuit and light fixture
CN209119805U (en) Surge protection device
CN201655688U (en) Silent energy-saving AC contactor
CN2929948Y (en) Contact large gap low power consumption electromagnetic relay
CN204289138U (en) Electromagnetic type power-off restoration switch
CN209929067U (en) Lightning protection pillar porcelain insulator
CN208128563U (en) Electromagnetic heater base with damping performance
CN206758298U (en) A kind of ups power special switch
CN104953537A (en) Overload protection switching device
CN109586372A (en) A kind of auto-cutout protective device of mobile phone charging head
CN112259346B (en) Lightning arrester of power transformer
CN204102652U (en) A kind of external series gap Penetrative lightning arrester
CN205621957U (en) Direct current is special from socket of taking arc control device and supporting plug thereof
CN208078640U (en) A kind of surge protector of portable installation
CN208767139U (en) A kind of transformer with lightning protection function
CN203118877U (en) Contactor
CN215008673U (en) Adjustable safety door sheet
CN2789908Y (en) AC zero passage switching relay based on mechanical contact
CN214479592U (en) Lightning-stroke-proof surge lightning arrester for Ethernet network
CN209102826U (en) Monitoring device is moved back in a kind of low pressure capacitive reactance throwing

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant