CN201466704U - Equipotential isolator and lightning protection device - Google Patents

Equipotential isolator and lightning protection device Download PDF

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Publication number
CN201466704U
CN201466704U CN2009200718100U CN200920071810U CN201466704U CN 201466704 U CN201466704 U CN 201466704U CN 2009200718100 U CN2009200718100 U CN 2009200718100U CN 200920071810 U CN200920071810 U CN 200920071810U CN 201466704 U CN201466704 U CN 201466704U
Authority
CN
China
Prior art keywords
equipotential
isolator
earth connection
lightning protection
gas discharge
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.)
Expired - Fee Related
Application number
CN2009200718100U
Other languages
Chinese (zh)
Inventor
桑震宇
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.)
SHANGHAI RAYWELL ELECTRIC TECHNOLOGY Co Ltd
Original Assignee
SHANGHAI RAYWELL ELECTRIC TECHNOLOGY Co Ltd
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 SHANGHAI RAYWELL ELECTRIC TECHNOLOGY Co Ltd filed Critical SHANGHAI RAYWELL ELECTRIC TECHNOLOGY Co Ltd
Priority to CN2009200718100U priority Critical patent/CN201466704U/en
Application granted granted Critical
Publication of CN201466704U publication Critical patent/CN201466704U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an equipotential isolator, which is characterized by comprising an outer casing; a gas discharge tube arranged inside the outer casing is provided with two electrodes; and two conducting wires are respectively electrically connected with the two electrodes. The equipotential isolator is installed between a grounding terminal of a signal surge protector and a grounding terminal of a lightning protection system, can prevent various interference waves of high frequency and low frequency on a protection ground from affecting signal transmission, and simultaneously ensure effective protection grounding of the signal lightning protection surge protector.

Description

Equipotential isolator and lightning protection device
Technical field
The utility model relates to a kind of equipotential isolator and lightning protection device.
Background technology
Thunder and lightning is a kind of typical weather phenomenon, it be aloft discharge by charged cloud due to.According to the interrelated data statistics, in earth atmosphere, there are every day 8,000,000 lightnings to take place approximately.In China various places, arranged mostly thunderstorm day more than 40 days every year, every square kilometre has the thunder that lands more than 6 times.Harm is maximum lands thunder, and voltage can be up to tens million of volts, and peak current can reach the training of 10 Wan An, and the lightning temperature is up to more than ten thousand degree, and the enormous impact ripple in huge lightning dead ahead is equivalent to bear on every sq 70 kilograms immense pressure.Therefore, thunder and lightning all brings grave danger to the mankind all the time.In fact, the annual damage to crops caused by thunder loss in the whole world is up to multi-million dollar, and China's annual thunderbolt number of casualties is also more than ten thousand people.In thunderbolt and thunderbolt incident, considerable part is not see thunderstorm and lightning.Because thunderbolt has two classes, i.e. direct stroke and indirect lightning strike at least.The former sound and light are concurrent, and the latter is taken place silently and is difficult for discovering, but consequence is even more serious, and is maximum to microelectronic device harm especially.In recent years, microelectric technique is popularized rapidly, and its reactance voltage and electric current all reduce significantly.In the modern life of strong and weak using electricity system coexistence, not only indirect lightning strike surge, the mode and the reason of damage to crops caused by thunder formation simultaneously are more various and complicated.Indirect lightning strike tends to cause badly damaged to electronics, communication and other electric equipment, and traditional lightning rod can not solve the indirect lightning strike problem fully, therefore in departments such as electric power, communication, broadcasting, TV, microelectric technique and oil, industrial and minerals, progressively begin to change lightning protection of new generation, the thunder system that takes shelter from the thunder, disappears, to reduce or remit damage to crops caused by thunder loss as possible.
In the common both at home and abroad at present lightning protection for power supply product; one class is mounted on the fixing position; be connected on electronics, communication or the electric equipment by electric power connection line or jockey; can not be too short because electric power connection line must have certain length; thunder and lightning still can produce certain indirect lightning strike by electric power connection line when taking place, thereby the power lightning protection of end-equipment is not had effective protective effect.Multiple devices are provided with ground connection respectively.
The ground connection of communication or computer industry generally is divided into lightning protected ground connection, main ground connection (electric power system ground connection) and telecommunication installation ground connection etc.Generally, do not disturb mutually, guarantee the normal operation of system equipment, independent grounding all is set for guaranteeing each grounding system.But release or other transient overvoltage when producing as lightning current, the potential difference that produces between each grounding system of separating must cause the damage of system equipment.
Generally, the ground connection of signal lighting protection Surge Protector can make shared grounding with strong power system ground connection, and this moment, signal line just was easy to be subjected to the various high frequencies in the grounding system or the interference of low-frequency disturbance ripple.
The utility model content
The purpose of this utility model is in order to overcome deficiency of the prior art, provides under a kind of prerequisite that guarantees the normal ground connection of signalling arrangement and has avoided the equipotential isolator that disturbs.
For realizing above purpose, the utility model is achieved through the following technical solutions:
The equipotential isolator is characterized in that, comprises shell, is provided with gas discharge tube in the shell, and gas discharge tube has two electrodes, and two leads are electrically connected with two electrodes respectively.
Its operation principle is: when applied voltage increases to dielectric strength above gas discharge tube gas, the gap of two interpolars is with discharge breakdown, gas discharge tube is converted into conduction state by original state of insulation, voltage difference after the conducting between gas discharge tube the two poles of the earth will reduce rapidly, and gas discharge tube returns to state of insulation again.
Another purpose of the present utility model provides a kind of lightning protection device, comprise the thunder resisting equipment earth connection, it is characterized in that, comprise the equipotential isolator, described equipotential isolator comprises shell, be provided with gas discharge tube in the shell, gas discharge tube has two electrodes, and two leads are electrically connected with two electrodes respectively; More than one equipotential isolator is connected in series thunder resisting equipment earth connection and miscellaneous equipment earth connection.
Preferably, lightning protection device comprises equipotential isolator, thunder resisting equipment earth connection, also comprise electric power system earth connection and telecommunication installation earth connection, described telecommunication installation earth connection is connected with the electric power system earth connection by the first equipotential isolator, and the electric power system earth connection is connected with the thunder resisting equipment earth connection by the second equipotential isolator.
Equipotential isolator in the utility model under normal conditions, presents open-circuit condition.Electric wave between each equipment ground can the phase mutual interference.When being subjected to being struck by lightning, when the potential difference between the different ground connection surpassed the critical trigger voltage of equipotential isolator, the conducting of equipotential isolator presented short-circuit condition, and each earth point moment is connected into an equipotential system, and each equipment is played a protective role.
Equipotential isolator in the utility model is installed between the earth terminal and lightning conductor system ground connection of signal Surge Protector; avoid that transmission impacts to signal because of the disturbing wave of various high frequencies in the protective earthing and low frequency, can guarantee effective protective earthing of signal lighting protection Surge Protector simultaneously again.
Description of drawings
Fig. 1 is the equipotential spacer structures schematic diagram in the utility model.
Fig. 2 is the lightning protection device structural representation in the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail:
Embodiment 1
As shown in Figure 1
The equipotential isolator comprises shell 1, is provided with gas discharge tube 2 in the shell 1, and gas discharge tube 2 has two electrodes (3,4), and two leads (5,6) are electrically connected with two electrodes (3,4) respectively.
Embodiment 2
As shown in Figure 2
Lightning protection device, comprise two equipotential isolator (7A described in the embodiment 1,7B), thunder resisting equipment earth connection 8, electric power system earth connection 9 and telecommunication installation earth connection 10, described telecommunication installation earth connection 10 is connected with electric power system earth connection 9 by equipotential isolator 7A, and electric power system earth connection 9 is connected with thunder resisting equipment earth connection 8 by equipotential isolator 7B.
Embodiment in the utility model only is used for the utility model is described, and does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in the utility model protection range.

Claims (3)

1. the equipotential isolator is characterized in that, comprises shell, is provided with gas discharge tube in the shell, and gas discharge tube has two electrodes, and two leads are electrically connected with two electrodes respectively.
2. lightning protection device comprises the thunder resisting equipment earth connection, it is characterized in that, comprise the equipotential isolator, described equipotential isolator comprises shell, is provided with gas discharge tube in the shell, gas discharge tube has two electrodes, and two leads are electrically connected with two electrodes respectively; More than one equipotential isolator is connected in series thunder resisting equipment earth connection and miscellaneous equipment earth connection.
3. lightning protection device according to claim 2, it is characterized in that, comprise equipotential isolator, thunder resisting equipment earth connection, also comprise electric power system earth connection and telecommunication installation earth connection, described telecommunication installation earth connection is connected with the electric power system earth connection by the first equipotential isolator, and the electric power system earth connection is connected with the thunder resisting equipment earth connection by the second equipotential isolator.
CN2009200718100U 2009-05-07 2009-05-07 Equipotential isolator and lightning protection device Expired - Fee Related CN201466704U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200718100U CN201466704U (en) 2009-05-07 2009-05-07 Equipotential isolator and lightning protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200718100U CN201466704U (en) 2009-05-07 2009-05-07 Equipotential isolator and lightning protection device

Publications (1)

Publication Number Publication Date
CN201466704U true CN201466704U (en) 2010-05-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200718100U Expired - Fee Related CN201466704U (en) 2009-05-07 2009-05-07 Equipotential isolator and lightning protection device

Country Status (1)

Country Link
CN (1) CN201466704U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021115092A1 (en) * 2019-12-10 2021-06-17 南京创博电子有限公司 Lightning protection grounding grid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021115092A1 (en) * 2019-12-10 2021-06-17 南京创博电子有限公司 Lightning protection grounding grid

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100512

Termination date: 20140507