CN203086122U - Protection system suppressing long time surge in single-phase distribution mode - Google Patents
Protection system suppressing long time surge in single-phase distribution mode Download PDFInfo
- Publication number
- CN203086122U CN203086122U CN 201320022299 CN201320022299U CN203086122U CN 203086122 U CN203086122 U CN 203086122U CN 201320022299 CN201320022299 CN 201320022299 CN 201320022299 U CN201320022299 U CN 201320022299U CN 203086122 U CN203086122 U CN 203086122U
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- Prior art keywords
- surge
- protection system
- zero line
- phase distribution
- distribution mode
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- 230000001012 protector Effects 0.000 claims description 22
- 238000001914 filtration Methods 0.000 abstract description 2
- 230000003750 conditioning effect Effects 0.000 description 7
- 230000007774 longterm Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The utility model discloses a protection system suppressing long time surge in a single-phase distribution mode. A lightning protection device is connected between a fire line and a zero line. The fire line and the zero line are connected with a filter. The filter is located between the connection point of the lightning protection device, the fire line and the zero line and an electric appliance component to be protected. According to the utility model, surge of long duration can be suppressed; the time of surge suppressing is more than 10 times the time of surge suppressing of the protection system which singularly uses the lightning protection device, and damage caused by surge of long duration is avoided; and filtering can be carried out on a subsequent circuit and a power supply input end of a device, which prevents the subsequent circuit and the device from electromagnetic interference.
Description
Technical field
The utility model relates to a kind of surge protection system, is specifically related to have the protection system that suppresses long-time surge under a kind of single phase distribution mode.
Background technology
In today of electric science and technology and electronics technology high speed development, along with improving constantly of various electric and electronic control system integrated levels, anti-surge voltage and surge current impact capacity but significantly reduce, and cause when electric switch is operated or the surge that produces when suffering lightning discharge causes damage to electronic installation.The power input of therefore all basically electric and electronic control systems all needs to design the work that the surge protection system protects subsequent conditioning circuit and equipment, so surge protection system the important of ten minutes that seem in electric and electronic control system.
Surge promptly impacts, and is meant the transient wave of electric current, voltage or power that road along the line or circuit transmit.It is characterized in that slowly descending after the first fast rise.Existing surge protection system great majority directly are made up of single anti-lightening protector, and the structure under the corresponding single phase distribution mode as shown in Figure 1.Yet; the surge protection system that this kind is made up of single anti-lightening protector (SPD) in the prior art lacks the function that suppresses long-time surge relatively; so often occur in actual use when being in the electric switch operation or duration that lightning discharge produces during greater than the surge of 10ms, existing surge protection system can't play the effect of protecting subsequent conditioning circuit and equipment.
As shown in Figure 1; existing surge protection system directly is made up of single anti-lightening protector (SPD); and anti-lightening protector (SPD) can only suppress that the surge current of the 10/350 μ s waveform in continuous 5～10 cycles impacts and the ability of the surge voltage impact of the 8/20 μ s waveform in 5～10 cycles, and promptly existing surge protection system can only suppress the surge that the duration is not more than 3.5ms.But, may be greater than 3.5ms in the electric switch operation of reality or the duration of lightning discharge generation surge, particularly the surge of duration greater than 10ms often appears in the operation of the electric switch of high-power electrical equipment; At this moment, existing surge protection system just can't protect subsequent conditioning circuit and equipment.
The utility model content
The technical problems to be solved in the utility model provides has the protection system that suppresses long-time surge under a kind of single phase distribution mode; can suppress long-term surge, the time of suppressing surge can reach single employing anti-lightening protector and suppress more than 10 times of surge time.
The utility model provides has the protection system that suppresses long-time surge under a kind of single phase distribution mode; between live wire and zero line, be connected with anti-lightening protector; also be connected with filter on described live wire and the zero line, and described filter is between the electric component of the tie point of described anti-lightening protector and live wire and zero line, desire protection.
Further, the live wire input of described filter, zero line input are connected with the live wire of input side, the zero line of input side respectively, and the live wire output of described filter, zero line output are connected with the live wire of outlet side, the zero line of outlet side respectively.
Further, the earth terminal ground connection of described filter.
Further, described filter is FN 2090 filters.
The advantage that the utlity model has is:
1, have the protection system that suppresses long-time surge under a kind of single phase distribution mode that the utility model provides and can suppress long-term surge, the time of suppressing surge reaches the protection system inhibition surge time of single use anti-lightening protector more than 10 times.
2, have the protection system that suppresses long-time surge under a kind of single phase distribution mode that the utility model provides and to protect anti-lightening protector, do not damaged by long-term surge.
3, having the protection system that suppresses long-time surge under a kind of single phase distribution mode that the utility model provides can also carry out filtering to the power input of subsequent conditioning circuit and equipment, prevents that subsequent conditioning circuit and equipment are subjected to electromagnetic interference.
Description of drawings
Fig. 1 is the structural representation of surge protection system under the single phase distribution mode in the prior art
Fig. 2 is the structural representation that the protection system that suppresses long-time surge is provided under a kind of single phase distribution mode of providing of the utility model.
Among the figure: the 1-anti-lightening protector; The 2-filter.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to qualification of the present utility model.
The utility model provides has the protection system that suppresses long-time surge under a kind of single phase distribution mode; with respect to existing surge protection system; have the function that suppresses long-time surge, have the subsequent conditioning circuit of the utility model protection system and equipment when being subjected to the surge of duration 10ms～2s without any damage.
Surge protection of the present utility model system has added a filter 2 on the basis of existing surge protection system, promptly comprise anti-lightening protector 1(SPD) and filter 2(EMI).Make the surge protection system increase " ability that suppresses the voltage transient change ",, make surge protection of the present utility model system become " having the protection system that suppresses long-time surge " for subsequent conditioning circuit and equipment provide the assurance that suppresses long-time surge.
The protection system that suppresses long-time surge is provided under a kind of single phase distribution mode that provides among the embodiment of the present utility model, this protection system is the protection system under the single phase distribution mode, as shown in Figure 2, the live wire input that the live wire of input side (L) inserts anti-lightening protector 1 and filter 2 is the IN-L end, the zero line of input side (N) inserts the zero line input IN-N end of anti-lightening protector 1 and filter 2, and the earth terminal of anti-lightening protector 1 and filter 2 is a PE end ground connection; The live wire output that the live wire of outlet side (L) inserts filter 2 is the OUT-L end, and the zero line output that the zero line of outlet side inserts filter 2 is the OUT-N end.Live wire under the single phase distribution mode and zero line are respectively with after the live wire input of anti-lightening protector 1 and zero line input are connected; insert the live wire input and the zero line input of filter 2 again; through the live wire output and the output of zero line output of filter 2 correspondences, insert at last in the electric component of work of desire protection.
Because the major function of filter 2 is to suppress the transient changing of curtage, and the filter of selecting for use 2 of the present utility model can suppress the duration and be not more than 2s, crest voltage is not more than the surge (impact) of 2kV, this is to be determined by the model with the filter of choosing 2, of the present utility modelly select for use anti-lightening protector 1 can suppress the duration to be not more than 3.5ms, crest voltage is not more than the surge (impact) of 4kV; And in the practical application, duration all is not more than system's rated voltage (promptly less than 1kV) of 2.5 times greater than the crest voltage of the surge (impact) of 3.5ms, the duration less than the crest voltage of the surge (impact) of 3.5ms all greater than system's rated voltage (promptly greater than 1kV) of 2.5 times.The model specification of the utility model median filter 2 and anti-lightening protector 1 is selected as shown in table 1.Use the long-time surge (impact) that surge of the present utility model (impact) protection system can suppress all electric switch operations or lightning discharge generation.
Table 1: the selection model table of filter and anti-lightening protector
| Title | Specifications and models |
| Filter | FN 2090 |
| Anti-lightening protector | Belong to Class II (C class) anti-lightening protector, maximum Uc: 350V(L-N)/260V(N-PE) |
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection range of the present utility model is not limited thereto.Being equal to that those skilled in the art are done on the utility model basis substitutes or conversion, all within protection range of the present utility model.Protection range of the present utility model is as the criterion with claims.
Claims (4)
1. has the protection system that suppresses long-time surge under a single phase distribution mode; between live wire and zero line, be connected with anti-lightening protector; it is characterized in that: also be connected with filter on described live wire and the zero line, and described filter is between the electric component of the tie point of described anti-lightening protector and live wire and zero line, desire protection.
2. has the protection system that suppresses long-time surge under the single phase distribution mode according to claim 1; it is characterized in that: the live wire input of described filter, zero line input are connected with the live wire of input side, the zero line of input side respectively, and the live wire output of described filter, zero line output are connected with the live wire of outlet side, the zero line of outlet side respectively.
3. have the protection system that suppresses long-time surge under the single phase distribution mode according to claim 2, it is characterized in that: the earth terminal ground connection of described filter.
4. have the protection system that suppresses long-time surge under the single phase distribution mode according to claim 3, it is characterized in that: described filter is FN 2090 filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022299 CN203086122U (en) | 2013-01-16 | 2013-01-16 | Protection system suppressing long time surge in single-phase distribution mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022299 CN203086122U (en) | 2013-01-16 | 2013-01-16 | Protection system suppressing long time surge in single-phase distribution mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203086122U true CN203086122U (en) | 2013-07-24 |
Family
ID=48831927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320022299 Expired - Lifetime CN203086122U (en) | 2013-01-16 | 2013-01-16 | Protection system suppressing long time surge in single-phase distribution mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203086122U (en) |
-
2013
- 2013-01-16 CN CN 201320022299 patent/CN203086122U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |