CN206894235U - Passive isolated form Surge Protector for controlling bus - Google Patents
Passive isolated form Surge Protector for controlling bus Download PDFInfo
- Publication number
- CN206894235U CN206894235U CN201720808076.6U CN201720808076U CN206894235U CN 206894235 U CN206894235 U CN 206894235U CN 201720808076 U CN201720808076 U CN 201720808076U CN 206894235 U CN206894235 U CN 206894235U
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- Prior art keywords
- coil
- secondary coil
- circuit
- input
- smoothing choke
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- 230000001012 protector Effects 0.000 title claims abstract description 10
- 238000009499 grossing Methods 0.000 claims abstract description 18
- 230000002633 protecting effect Effects 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a kind of passive isolated form Surge Protector for controlling bus, including：The primary coil and secondary coil coupled by transformer core, first input end passes sequentially through the first smoothing choke, primary coil, second smoothing choke is connected with the second input, the first end of secondary coil is connected with the first output end, second end of secondary coil is connected with the second output end, first smoothing choke is coupled with the second smoothing choke by choke coil magnet core, the centre tap of primary coil is connected by the first circuit and second circuit of parallel connection with outdoor cable protecting field, first circuit includes first resistor and the first electric capacity being arranged in series, TVS is provided with second circuit, the centre tap of secondary coil passes sequentially through second resistance and the second electric capacity is connected with protected equipment protection；3rd termination outdoor cable protecting field of gas-discharge tube.The utility model can be effectively isolated from ground electric potential fluctuation caused by outdoor equipment and cable.
Description
Technical field
It the utility model is related to surge protection technique field, more particularly to a kind of passive isolated form wave for controlling bus
Surge protector.
Background technology
In the prior art, direct-passing mode is used between the input of controlling bus Surge Protector and output end, and is inputted
End and the decoupling component of output end are generally resistance or inductance, and this mode protecting effect is poor, have remaining direct
Surge energy enters protected equipment and forces to carry out the mutual transmission of ground potential between input and output end.
Utility model content
The utility model provides a kind of passive isolated form Surge Protector for controlling bus, to solve prior art
It can not be effectively isolated from caused by outdoor equipment and cable the problem of ground electric potential fluctuation.
To solve the above problems, as one side of the present utility model, there is provided a kind of for the passive of controlling bus
Isolated form Surge Protector, including：The primary coil and secondary coil coupled by transformer core, first input end lead to successively
Cross the first smoothing choke, the primary coil, the second smoothing choke to be connected with the second input, the of the secondary coil
One end is connected with the first output end, and the second end of the secondary coil is connected with the second output end, first smoothing choke
Coupled with second smoothing choke by choke coil magnet core, the centre tap of the primary coil passes through the first electricity in parallel
Road and second circuit are connected with outdoor cable protecting field, and first circuit includes the first resistor being arranged in series and the first electricity
Hold, be provided with TVS on the second circuit, the centre tap of the secondary coil pass sequentially through second resistance and the second electric capacity with
Connect to protected equipment protection；The first end of gas-discharge tube is connected with the first input end, the gas-discharge tube
Second end is connected with second input, the 3rd termination outdoor cable protecting field of the gas-discharge tube.
Preferably, the controlling bus is RS485 buses.
After the utility model, separated with outdoor cable protecting field to protected equipment protection, can be effectively isolated and come from
Ground electric potential fluctuation caused by outdoor equipment and cable.
Brief description of the drawings
Fig. 1 schematically shows circuit theory diagrams of the present utility model.
Reference in figure：1st, transformer core；2nd, primary coil；3rd, secondary coil；4th, first input end；5th, the first filter
Ripple choke coil；6th, the second smoothing choke；7th, the second input；8th, the first output end；9th, the second output end；10th, choke coil magnetic
Core；11st, outdoor cable protecting field；12nd, first resistor；13rd, the first electric capacity；14、TVS；15th, second resistance；16th, the second electric capacity；
17th, protected equipment protection；18th, gas-discharge tube.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
One side of the present utility model, there is provided a kind of passive isolated form Surge Protector for controlling bus, bag
Include：The primary coil 2 and secondary coil 3 coupled by transformer core 1, first input end 4 pass sequentially through the first filtering chokes
Circle 5, the primary coil 2, the second smoothing choke 6 are connected with the second input 7, the first end of the secondary coil 3 and the
One output end 8 is connected, and the second end of the secondary coil 3 is connected with the second output end 9, first smoothing choke 5 and institute
State the second smoothing choke 6 to couple by choke coil magnet core 10, the centre tap of the primary coil 2 passes through the first electricity in parallel
Road and second circuit are connected with outdoor cable protecting field 11, and first circuit includes the first resistor 12 and first being arranged in series
Electric capacity 13, is provided with TVS14 on the second circuit, the centre tap of the secondary coil 3 pass sequentially through second resistance 15 and
Second electric capacity 16 with protected equipment protection 17 is connected；The first end of gas-discharge tube 18 is connected with the first input end 4,
Second end of the gas-discharge tube 18 is connected with second input 7, described in the 3rd termination of the gas-discharge tube 18
Outdoor cable protecting field 11.Preferably, the controlling bus is RS485 buses.
Wherein, the first smoothing choke 5 forms filtering unit, primary coil 2 and secondary with second smoothing choke 6
Coil 3 forms isolation module, and the utility model combines gas-discharge tube, filtering unit, TVS and isolation module.
During work, after controlling bus signal is by the input 7 of first input end 4 and second, after filtered component filtering, then
The electromagnetic conversion coupling for the transformer being made up of primary coil 2 and secondary coil 3, it is delivered to the first output end 8 and the second output
End 9.Meanwhile surge energy is drained into outside wire by gas-discharge tube 18 at the input 7 of first input end 4 and second
Cable protection 11.
As can be seen here, after the utility model, 17 separated with outdoor cable protecting field 11 to protected equipment protection, can
It is effectively isolated from ground electric potential fluctuation caused by outdoor equipment and cable.
In the utility model, between the input 7 of first input end 4 and second and the first output end 8 and the second output end 9
Without direct electrical connection physically, signal can be but transmitted, has separated the transmission of surge in signal line；In addition, filtering unit
Can further decay surge energy in the line, the transmission quality of signal can also be improved；Due to isolation module can effectively every
Disconnected ground potential transitive relation between the input 7 of first input end 4 and second and the first output end 8 and the second output end 9, because
This utility model allows the input 7 of first input end 4 and second and the first output end 8 and the second output end 9 to be respectively connected to not
In idiostatic earthed system.
Compared with prior art, the input 7 of first input end 4 and second of the present utility model and the first output end 8 and
Two output ends 9 are set being electrically isolated, and the surge energy in circuit can not pass through isolating device, can only be from the surge of input
Suppression device imports the earth.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (2)
- A kind of 1. passive isolated form Surge Protector for controlling bus, it is characterised in that including：Pass through transformer core (1) primary coil (2) and secondary coil (3) of coupling, first input end (4) pass sequentially through the first smoothing choke (5), described Primary coil (2), the second smoothing choke (6) are connected with the second input (7), the first end of the secondary coil (3) and the One output end (8) is connected, and the second end of the secondary coil (3) is connected with the second output end (9), first smoothing choke (5) coupled with second smoothing choke (6) by choke coil magnet core (10), the centre tap of the primary coil (2) leads to The first circuit and second circuit for crossing parallel connection are connected with outdoor cable protecting field (11), and first circuit includes what is be arranged in series First resistor (12) and the first electric capacity (13), TVS (14), the centre of the secondary coil (3) are provided with the second circuit Tap passes sequentially through second resistance (15) and the second electric capacity (16), and with protected equipment protection (17) are connected；Gas-discharge tube (18) first end is connected with the first input end (4), the second end of the gas-discharge tube (18) and the described second input Hold (7) connection, the 3rd termination outdoor cable protecting field (11) of the gas-discharge tube (18).
- 2. the passive isolated form Surge Protector according to claim 1 for controlling bus, it is characterised in that the control Bus processed is RS485 buses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720808076.6U CN206894235U (en) | 2017-07-05 | 2017-07-05 | Passive isolated form Surge Protector for controlling bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720808076.6U CN206894235U (en) | 2017-07-05 | 2017-07-05 | Passive isolated form Surge Protector for controlling bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206894235U true CN206894235U (en) | 2018-01-16 |
Family
ID=61299472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720808076.6U Expired - Fee Related CN206894235U (en) | 2017-07-05 | 2017-07-05 | Passive isolated form Surge Protector for controlling bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206894235U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490638A (en) * | 2019-01-25 | 2020-08-04 | 广东美的白色家电技术创新中心有限公司 | Electric control assembly and electrical equipment |
| CN112909908A (en) * | 2021-01-20 | 2021-06-04 | 宁波方太厨具有限公司 | Anti-surge circuit of side-draft range hood |
-
2017
- 2017-07-05 CN CN201720808076.6U patent/CN206894235U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490638A (en) * | 2019-01-25 | 2020-08-04 | 广东美的白色家电技术创新中心有限公司 | Electric control assembly and electrical equipment |
| CN112909908A (en) * | 2021-01-20 | 2021-06-04 | 宁波方太厨具有限公司 | Anti-surge circuit of side-draft range hood |
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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 |
Granted publication date: 20180116 |