CN207994623U - A kind of EOC networks ONU based on self- recoverage lightning prevention circuit is for electric installation - Google Patents
A kind of EOC networks ONU based on self- recoverage lightning prevention circuit is for electric installation Download PDFInfo
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- CN207994623U CN207994623U CN201820512793.9U CN201820512793U CN207994623U CN 207994623 U CN207994623 U CN 207994623U CN 201820512793 U CN201820512793 U CN 201820512793U CN 207994623 U CN207994623 U CN 207994623U
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- recovery fuse
- discharge tube
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Abstract
The utility model discloses a kind of EOC networks ONU based on self- recoverage lightning prevention circuit is for electric installation, the device includes AC60V+TV signaling interfaces (1), varistor A (2), ceramic discharge tube (3), varistor B (4), self-recovery fuse (5) and feed isolation conversion transformer (6), the varistor A (2) is connected in series with ceramic discharge tube (3), another termination the earth of the ceramic discharge tube (3), conversion transformer (6) primary parallel is isolated with feed in the varistor B (4), wherein one end is connected in series with self-recovery fuse (5), the feed isolation conversion transformer (6) is secondary to be connect with ONU (7), it is characterized in that：The AC60V+TV signaling interfaces (1) connect with self-recovery fuse (5), varistor A (2) respectively and to form lightning protection circuit unit；Its advantage is that, using the mentality of designing of self-recovery fuse+lightning protection circuit, it can prevent overvoltage that the factors such as thunder and lightning generate in circuit or overcurrent from being damaged caused by EOC equipment, the EMC performances for improving EOC equipment simultaneously, have the function of bipolar lightning protection, after thunder and lightning stops with troubleshooting, self-recovery fuse reverts to normal condition, without manually replacing, there is reusable, the good feature of lightning protection effect.
Description
Technical field
The utility model is related to a kind of EOC network transmissions for electric installation, be especially that one kind being based on the anti-lightning strike electricity of self- recoverage
The EOC networks ONU on road is for electric installation.
Background technology
Current ONU equipment is usually according to telecommunication service Demand Design, and most ONU equipment power supply power supplies use
AC220V mains supplies are powered, and are either used to boost the feed of EOC networks by step-up transformer and are powered or adopt for 220V
DC-voltage supply is converted by transformer with by the feed of EOC networks.For the equipment outdoors of working, no matter which
Kind power supply, all may be caused electric appliance to be damaged by the infringement of inductive lightning and lightning wave.But existing lightning protection of electric appliance skill
Art is mainly the mode for taking lightning protection of electric appliance to be grounded, and a series of lightning protection circuits occurs with this principle, but is connect in certain lightning protection
The insecure occasion in ground, this lightning protection measures have been difficult protection security appliance, and this single shocking preventing technology safely may be used
Low by property, after by multiple lightning impulse, lightning protection circuit reduced performance, lightning protection effect declines, and needs to repeat to replace lightning protection device
Part（Such as fuse）, therefore, existing EOC networks ONU is difficult to meet safety to prevent for many defects of shocking preventing technology in electric installation
The more demanding occasion of thunder.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of high and reusable with lightning protection security performance
EOC network transmissions are especially a kind of EOC networks ONU based on self- recoverage lightning prevention circuit for electric installation for electric installation.
The technical solution of the utility model is：
It is a kind of based on the EOC networks ONU of self- recoverage lightning prevention circuit for electric installation, the device include AC60V+TV signals supply
Electrical interface, varistor A, ceramic discharge tube, varistor B, self-recovery fuse and feed isolation conversion transformer, it is described
Varistor A is connected in series with ceramic discharge tube, another termination of ceramic discharge tube the earth, the varistor B with
Feed isolation conversion transformer primary parallel, wherein one end are connected in series with self-recovery fuse, feed isolation conversion
Transformer secondary output is connect with ONU, it is characterised in that：The signal-powered interfaces of the AC60V+TV respectively with self-recovery fuse,
Varistor A connects to form lightning protection circuit unit.
The utility model has the technical effect that：The utility model uses the mentality of designing of self-recovery fuse+lightning protection circuit,
It can prevent instantaneous high pressure from generating influence of the high current to load.This lightning protection circuit can prevent the factors such as thunder and lightning in circuit
The overvoltage or overcurrent of generation are damaged caused by circuit interface, while improving the EMC performances of circuit interface, are had bipolar
The function of lightning protection, it utilizes self-recovery fuse feature, and after thunder and lightning and troubleshooting, self-recovery fuse reverts to normal shape
State is replaced without artificial, has reusable, the good feature of lightning protection effect.
Description of the drawings
Fig. 1 is that a kind of EOC networks ONU power supplies device circuit structure based on self- recoverage lightning prevention circuit of the utility model is shown
It is intended to；
As shown in the figure：The signal-powered interfaces of 1.AC60V+TV, 2. varistor A, 3. ceramic discharge tubes, 4. varistor B,
5. self-recovery fuse, 6. feed isolation conversion transformers, 7.ONU.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
As shown in Figure 1, the utility model be it is a kind of based on the EOC networks ONU of self- recoverage lightning prevention circuit for electric installation, should
Device includes the signal-powered interfaces 1 of AC60V+TV, varistor A2, ceramic discharge tube 3, varistor B4, self-recovery fuse 5
Conversion transformer 6 is isolated with feed, the varistor A2 is connected in series with ceramic discharge tube 3, the ceramic discharge tube 3
6 primary parallel of conversion transformer is isolated with feed by another termination the earth, the varistor 4B, and wherein one end is protected with self- recoverage
Dangerous silk 5 is connected in series with, and feed isolation 6 grades of conversion transformer are connect with ONU7, it is characterised in that：The AC60V+
The signal-powered interfaces of TV 1 connect to form lightning protection circuit unit with self-recovery fuse 5, varistor A2 respectively.Varistor category
It needs to select appearance and size and packing forms, the present embodiment to use the varistor of 14D220K/14D220KJ according to discharge capacity
It is connected in series with UN2E5-1600DL ceramic discharge tubes to prolong the service life and ensure safety.Self-recovery fuse will be according to work
Make environment, including operating voltage, operating current, the temperature residing for element, fusing speed selected.The present embodiment uses
SCF075-60-2920R, when varistor B short-circuit failures, self-recovery fuse disconnects short circuit current, plays protection circuit
The effect of safety voluntarily restores after troubleshooting.
The operation principle of the utility model is：Varistor A is grounded after connecting with ceramic gas discharge tube, can be released
Indirect lightning strike surge current on the signal-powered lines of AC60V+TV；Varistor B and AC60V+TV signals feed conversion transformation
Device primary parallel, front end of line road are connected a self-recovery fuse, when thunder and lightning arriving varistor B short-circuit failures, from extensive
Double insurance silk disconnects short circuit current, to prevent instantaneous high pressure from generating influence of the high current to load.This lightning protection circuit can be with
It prevents overvoltage that the factors such as thunder and lightning generate in circuit or overcurrent from being damaged caused by electrical interface, while improving electrical interface
EMC performances；Self-recovery fuse is processed into through special process by high-tech polymer resin and conductive nano crystal grain, normally
In the case of, conductive nano crystal links to form chain conductive path with resin base, fuse normal work；When short circuit occurs for circuit
Or when overload, flowing through the high current of fuse makes its collection temperature increase, and when reaching Curie temperature, the density of states is reduced rapidly,
Phase transformation increases, and internal electrically conductive links become or are broken in snowslide state, and fuse adjourns high-impedance state in phase step type, and electric current is pressed from both sides rapidly
Disconnected, quick to be carried out to circuit, accurately limitation and protection, small electric current make fuse be constantly in guard mode,
After thunder and lightning and troubleshooting, collection temperature drop is low, and the density of states increases, and phase transformation is restored, and nanocrystal is reduced into chain conductive path,
Self-recovery fuse reverts to normal condition, is replaced without artificial, reusable.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, make several equivalent substitute or obvious modifications without departing from the concept of the premise utility, and performance or
Purposes is identical, then shall be regarded as belonging to the protection domain that claims that the utility model is submitted determine.
Claims (1)
1. it is a kind of based on the EOC networks ONU of self- recoverage lightning prevention circuit for electric installation, which includes AC60V+TV signals
Power supply interface (1), varistor A (2), ceramic discharge tube (3), varistor B (4), self-recovery fuse (5) and feed every
From conversion transformer (6), the varistor A (2) is connected in series with ceramic discharge tube (3), the ceramic discharge tube (3)
Conversion transformer (6) primary parallel is isolated with feeding in another termination the earth, the varistor B (4), wherein one end with from extensive
Double insurance silk (5) is connected in series with, and feed isolation conversion transformer (6) is secondary to be connect with ONU (7), it is characterised in that：Institute
The signal-powered interfaces of AC60V+TV (1) stated connect to form lightning protection circuit with self-recovery fuse (5), varistor A (2) respectively
Unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820512793.9U CN207994623U (en) | 2018-04-12 | 2018-04-12 | A kind of EOC networks ONU based on self- recoverage lightning prevention circuit is for electric installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820512793.9U CN207994623U (en) | 2018-04-12 | 2018-04-12 | A kind of EOC networks ONU based on self- recoverage lightning prevention circuit is for electric installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207994623U true CN207994623U (en) | 2018-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820512793.9U Expired - Fee Related CN207994623U (en) | 2018-04-12 | 2018-04-12 | A kind of EOC networks ONU based on self- recoverage lightning prevention circuit is for electric installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207994623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768225A (en) * | 2019-10-30 | 2020-02-07 | 南方电网科学研究院有限责任公司 | POE power supply system and self-recovery lightning protection device thereof |
-
2018
- 2018-04-12 CN CN201820512793.9U patent/CN207994623U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768225A (en) * | 2019-10-30 | 2020-02-07 | 南方电网科学研究院有限责任公司 | POE power supply system and self-recovery lightning protection device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 Termination date: 20200412 |