CN204012695U - Single-phase intelligent ammeter multifunctional lightning protection device - Google Patents
Single-phase intelligent ammeter multifunctional lightning protection device Download PDFInfo
- Publication number
- CN204012695U CN204012695U CN201420472343.3U CN201420472343U CN204012695U CN 204012695 U CN204012695 U CN 204012695U CN 201420472343 U CN201420472343 U CN 201420472343U CN 204012695 U CN204012695 U CN 204012695U
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- China
- Prior art keywords
- lead
- out wire
- transient voltage
- lightning protection
- piezo
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- Expired - Fee Related
Links
- 230000001052 transient effect Effects 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims description 8
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Abstract
A kind of single-phase intelligent ammeter multifunctional lightning protection device, piezo-resistance R
1, piezo-resistance R
2rear and transient voltage twin zener dioder TVS connect
4parallel connection, its two ends connect respectively lead-out wire L and lead-out wire N, piezo-resistance R
1, piezo-resistance R
2common port place be connected with gas discharge tube GDT, the other end ground connection of gas discharge tube GDT; Transient voltage twin zener dioder TVS
2with transient voltage twin zener dioder TVS
3rear and transient voltage twin zener dioder TVS connect
1parallel connection, then its two ends connect respectively lead-out wire A and lead-out wire B, transient voltage twin zener dioder TVS
2with transient voltage twin zener dioder TVS
3common end grounding, lead-out wire A and lead-out wire B are connected in parallel on respectively on the A, B binding post of the RS485 of single-phase intelligent ammeter, form effective overcoat of thunder and lightning, avoid single-phase intelligent ammeter to be ruined by thunderbolt.
Description
Technical field
The utility model relates to a kind of single-phase intelligent ammeter protective device, relates in particular to a kind of single-phase intelligent ammeter multifunctional lightning protection device.
Background technology
Single-phase intelligent ammeter does not have lightning protection function now.In the time that lightning current comes, surge current enters intelligent electric energy meter by AC power, or enters intelligent electric energy meter by A, the B port of RS485, causes the inner breaking-up of intelligent electric energy meter.
Summary of the invention
The purpose of this utility model is to provide a kind of single-phase intelligent ammeter multifunctional lightning protection device, forms effective overcoat of thunder and lightning, avoids surge current to enter intelligent electric energy meter by A, the B interface of AC power and RS485.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of single-phase intelligent ammeter multifunctional lightning protection device, is characterized in that: the lightning protection circuit and the RS485 communication lightning protection circuit that comprise AC power; In the lightning protection circuit of described AC power, piezo-resistance R
1, piezo-resistance R
2rear and transient voltage twin zener dioder TVS connect
4parallel connection, then its two ends connect respectively lead-out wire L and lead-out wire N, piezo-resistance R
1, piezo-resistance R
2common port place be connected with gas discharge tube GDT, the other end ground connection of gas discharge tube GDT, lead-out wire L is connected with the live wire of intelligent electric energy meter, lead-out wire N is connected with the zero line of intelligent electric energy meter; In described RS485 communication lightning protection circuit, transient voltage twin zener dioder TVS
2with transient voltage twin zener dioder TVS
3rear and transient voltage twin zener dioder TVS connect
1parallel connection, then its two ends connect respectively lead-out wire A and lead-out wire B, transient voltage twin zener dioder TVS
2with transient voltage twin zener dioder TVS
3common end grounding, lead-out wire A and lead-out wire B are connected in parallel on respectively on the A, B binding post of the RS485 of single-phase intelligent ammeter.
The utility model in use; can quickly and easily lightning protection device be arranged in single-phase intelligent ammeter table case; its lead-out wire is connected in parallel on the A, B terminal of the alternating voltage terminal that will protect and RS485, forms effective overcoat of thunder and lightning, avoids single-phase intelligent ammeter to be ruined by thunderbolt.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
A kind of single-phase intelligent ammeter of the utility model multifunctional lightning protection device as shown in Figure 1, comprises lightning protection circuit and the RS485 communication lightning protection circuit of AC power; In the lightning protection circuit of described AC power, piezo-resistance R
1, piezo-resistance R
2rear and transient voltage twin zener dioder TVS connect
4parallel connection, then its two ends connect respectively lead-out wire L and lead-out wire N, piezo-resistance R
1, piezo-resistance R
2common port place be connected with gas discharge tube GDT, the other end ground connection of gas discharge tube GDT, lead-out wire L is connected with the live wire of intelligent electric energy meter, lead-out wire N is connected with the zero line of intelligent electric energy meter; In described RS485 communication lightning protection circuit, transient voltage twin zener dioder TVS
2with transient voltage twin zener dioder TVS
3rear and transient voltage twin zener dioder TVS connect
1parallel connection, then its two ends connect respectively lead-out wire A and lead-out wire B, transient voltage twin zener dioder TVS
2with transient voltage twin zener dioder TVS
3common end grounding, lead-out wire A and lead-out wire B are connected in parallel on respectively on the A, B binding post of the RS485 of single-phase intelligent ammeter.
The utility model single-phase intelligent ammeter multifunctional lightning protection device, described device inside is provided with lightning protection circuit, the RS485 communication lightning protection circuit of AC power, and device volume is little, easily installs.
Embodiment
The utility model single-phase intelligent ammeter multifunctional lightning protection device; the one, the lightning protection part of alternating current circuit adopts the organic assembling of high energy TVS pipe, piezo-resistance and gas discharge tube; when thunder and lightning comes; before piezo-resistance is not reacted; the conducting that takes the lead within 1 time nanosecond of TVS pipe; surge current is formed to short circuit; and TVS pipe two ends residual voltage is low; the unlikely intelligent meter internal component that smashes; make surge current seldom enter single-phase intelligent ammeter; the energy of surge current becomes heat on primary cable, thus protection intelligent electric energy meter.After 25 nanoseconds, piezo-resistance and gas discharge tube start successively, conducting, and shunting, by ground wire earial drainage, can not smash TVS pipe while ensureing large electric current.The 2nd, managing in advance and dissolve by TVS by the surge current of RS485 circuit.The lightning protection component lead-out wire of RS485 circuit is connected in parallel on the electric energy meter RS485 terminal needing protection, and has changed the lightning protection device of RS485 circuit is connected on to the traditional method before single-phase intelligent ammeter.Greatly improve the reliability of transmission, the difficulty of construction of reduction.
In the internal structure of multifunctional lightning protection device, one is to adopt high temperature resistant wire to connect, and prevents that lightning current from melting wire; The 2nd, the relevant Copper Foil on wiring board changes sheet copper into, improves moment through-current capacity, prevents that Copper Foil from coming off or gasifying under surge current.
The utility model single-phase intelligent ammeter multifunctional lightning protection device, is easily installed in single-phase intelligent ammeter table case.
According to described single-phase intelligent ammeter multifunctional lightning protection device, its feature is: described lightning protection device inside is provided with the lightning protection circuit of single-phase alternating-current lightning-protecting circuit, RS485 circuit.
The utility model has the advantages that: the utility model in use, can be arranged in single-phase intelligent ammeter table case by quick and convenient handle assembly, and connection is as follows: lightning protection device lead-out wire L receives on the live wire of intelligent electric energy meter, and lead-out wire N receives on the zero line of intelligent electric energy meter; Lead-out wire A, B are respectively and be connected on the A, B binding post of the RS485 of single-phase intelligent ammeter; Lead-out wire PE
1(ground protection line) and PE
2(ground protection line) be ground connection respectively.
Lightning protection device of the present utility model front is managed by TVS, piezo-resistance, gas discharge tube, light-emitting diode, the compositions such as high temperature resistant wire and sheet copper.
Lightning protection device reverse side of the present utility model is made up of indicator light, TVS pipe.
A kind of single-phase intelligent ammeter of the utility model multifunctional lightning protection device, installing inner front has AC power lightning protection circuit; There is RS485 communication lightning protection circuit at the device back side.
The utility model in use; can quickly and easily lightning protection device be arranged in single-phase intelligent ammeter table case; its lead-out wire is connected in parallel on the A, B terminal of the alternating voltage terminal that will protect and RS485, forms effective overcoat of thunder and lightning, avoids single-phase intelligent ammeter to be ruined by thunderbolt.
Embodiment recited above is described preferred implementation of the present utility model; not design of the present utility model and protection range are limited; do not departing under the prerequisite of the utility model design concept; various modification and improvement that in this area, common engineers and technicians make the technical solution of the utility model, all should fall into protection range of the present utility model.
Claims (1)
1. a single-phase intelligent ammeter multifunctional lightning protection device, is characterized in that: the lightning protection circuit and the RS485 communication lightning protection circuit that comprise AC power; In the lightning protection circuit of described AC power, piezo-resistance R
1, piezo-resistance R
2rear and transient voltage twin zener dioder TVS connect
4parallel connection, then its two ends connect respectively lead-out wire L and lead-out wire N, piezo-resistance R
1, piezo-resistance R
2common port place be connected with gas discharge tube GDT, the other end ground connection of gas discharge tube GDT, lead-out wire L is connected with the live wire of intelligent electric energy meter, lead-out wire N is connected with the zero line of intelligent electric energy meter; In described RS485 communication lightning protection circuit, transient voltage twin zener dioder TVS
2with transient voltage twin zener dioder TVS
3rear and transient voltage twin zener dioder TVS connect
1parallel connection, then its two ends connect respectively lead-out wire A and lead-out wire B, transient voltage twin zener dioder TVS
2with transient voltage twin zener dioder TVS
3common end grounding, lead-out wire A and lead-out wire B are connected in parallel on respectively on the A, B binding post of the RS485 of single-phase intelligent ammeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472343.3U CN204012695U (en) | 2014-08-21 | 2014-08-21 | Single-phase intelligent ammeter multifunctional lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472343.3U CN204012695U (en) | 2014-08-21 | 2014-08-21 | Single-phase intelligent ammeter multifunctional lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204012695U true CN204012695U (en) | 2014-12-10 |
Family
ID=52052637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420472343.3U Expired - Fee Related CN204012695U (en) | 2014-08-21 | 2014-08-21 | Single-phase intelligent ammeter multifunctional lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204012695U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134988A (en) * | 2014-08-21 | 2014-11-05 | 国家电网公司 | Multifunctional lightning protection device of intelligent single-phase electric meter |
| CN109088553A (en) * | 2018-09-12 | 2018-12-25 | 上海芯哲微电子科技股份有限公司 | It is a kind of for rotating the power supply adaptor of reel storage device automatically |
-
2014
- 2014-08-21 CN CN201420472343.3U patent/CN204012695U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134988A (en) * | 2014-08-21 | 2014-11-05 | 国家电网公司 | Multifunctional lightning protection device of intelligent single-phase electric meter |
| CN109088553A (en) * | 2018-09-12 | 2018-12-25 | 上海芯哲微电子科技股份有限公司 | It is a kind of for rotating the power supply adaptor of reel storage device automatically |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150821 |
|
| EXPY | Termination of patent right or utility model |