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Lightning protection method by grounding nearest point of signal feeder port

A lightning protection and feeder technology, applied in emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, connecting contact materials, etc., can solve problems such as damage to electronic devices in internal circuits of equipment, etc. achieve the effect of ensuring safety

Inactive Publication Date: 2011-01-12
HANGZHOU BILEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] When the casing adopts the grounding system PE2 of the lower part of the casing specified in the standard, the discharge consumption current i2 and i3 introduced by the power supply and signal port flow through the system equipment. Device damage

Method used

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  • Lightning protection method by grounding nearest point of signal feeder port
  • Lightning protection method by grounding nearest point of signal feeder port
  • Lightning protection method by grounding nearest point of signal feeder port

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specific Embodiment approach 2

[0035] refer to Figure 4 , a comprehensive protection method for one-point grounding of a feeder port of a medium-wave system, comprising a lightning-type lightning elimination needle on the upper part of the antenna tower 9 of a medium-wave transmitter, an SPD grounding point 1 at the feeder port, a down conductor 2, a grounding body 3, and an insulating material 4. The metal plate 5, one end of the down conductor 2 is connected to the SPD grounding point 1 of the medium wave transmitter feeder line, the other end of the down conductor 2 is connected to the grounding body 3 and the metal plate 5, and the medium wave transmitter 6 is placed on the insulation In terms of materials, put a layer of metal plate 5 under the insulating material. The size of the metal plate and the insulating material must be at least greater than the distance that can be touched by man and machine. Insulating materials are placed on the sidewalk, and the feature is that the grounding point 1 forms ...

specific Embodiment approach 3

[0039] The present invention will be further described below in conjunction with the embodiments of the mobile base station, but the protection scope of the present invention is not limited thereto.

[0040] refer to Figure 5, mobile base station system protection method without grounding body, including mobile antenna transmission 8, antenna feeder 3, feeder SPD ground point 1, down conductor 2, base station transmitting equipment 6, one end of down conductor 2 is in phase with base station feeder SPD ground point 1 The other end of the down conductor 2 is connected to the metal grounding plate 5, the transmitting device 6 is placed on the insulating material 4, and a layer of metal plate is placed under the insulating material. The size of the metal plate and the insulating material must be at least larger than the human-machine accessible It is best to lay metal materials in the entire machine room first, and pad insulating materials under and around the system equipment a...

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Abstract

The invention relates to a lightning protection method by grounding the nearest point of a signal feeder port, which comprises a nearest grounding point of the signal feeder port, a down lead, an insulating material and a metal grounding plate, wherein one end of the down lead is connected with the nearest grounding point of the signal feeder port, the other end is connected with a grounding body, a housing of a system device is isolated with the ground by using the insulating material, a layer of the metal grounding plate is laid below the insulating material, the metal plate is connected with the grounding body, and the sizes of the metal plate and the insulating material are at least larger than the contactable human-machine distance. The lightning protection method has the benefits of eliminating a bleeder dissipation current channel formed by lightning potential introduced from a power supply and a signal interface through the housing at the lower part of a machine device and the ground, leading the ground potential of the housing at the lower part of the device to suspend by leading the housing at the lower part of the device to be insulated and isolated with the ground, eliminating the probability of leading the external lightning potential to form lightning current and pass through in the system device, leading the place within a certain range below the system device to form the isopotential surface through the metal plate by utilizing the metal plate laid below the insulating plate and further ensuring the personal safety of staff walking on the system device. The method has high protection reliability and maintenance-free property and can simultaneously effectively reduce the mounting cost and the construction cost of the system.

Description

(1) Technical field [0001] The patent of the invention relates to a lightning protection method for system equipment with external power supply and signal feeder interface, such as radio and television transmitting stations and communication base stations. (2) Background technology [0002] The theoretical basis of traditional lightning protection measures is "lightning discharge theory": lightning energy is released to the earth through the lightning protection grounding wire, the smaller the grounding resistance, the more lightning energy released to the earth, and the better the effect. [0003] Under the guidance of this lightning protection theory, the basic protection measures for system equipment are as follows: figure 1 The specific measures include: [0004] The signal feeder in the computer room is equipped with SPD and grounding PE3 required by good grounding resistance; [0005] The grounding point of the lower casing of the system equipment and the grounding P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04H01R4/66
Inventor 韩晓红
Owner HANGZHOU BILEI TECH
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