CN206096236U - Zero sequence voltage collection system - Google Patents
Zero sequence voltage collection system Download PDFInfo
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- CN206096236U CN206096236U CN201621133754.5U CN201621133754U CN206096236U CN 206096236 U CN206096236 U CN 206096236U CN 201621133754 U CN201621133754 U CN 201621133754U CN 206096236 U CN206096236 U CN 206096236U
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- pin
- residual voltage
- zero sequence
- sequence voltage
- wiring board
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Abstract
The utility model discloses a zero sequence voltage collection system, characterized by: the zero sequence voltage sensor is fixed on the installation chassis, one time the wire connects respectively in the ABC of switch three -phase galvanic circle, fix the circuit board inside the switch through 4 fixed orifices (16), pin 24V+ and pin 24V to the circuit board apply DC24V voltage, pin E ground connection with the circuit board, prevent that the circuit board electric leakage from injuring the person and equipment, the pin T and the pin N of and gate board link to each other respectively with the secondary wire, the zero sequence voltage sensor becomes zero sequence voltage with circuit ABC three -phase voltage conversion and exports for buffer behind capacitor filter earlier, buffer keeps apart external high frequency interference simultaneously with the zero sequence voltage signal amplification, behind capacitor filter, through pin SO+ and pin SO give control terminal with zero sequence voltage signal output, at equal of signal input and output circuit, the active absorption can cause the pulse of buffer damage, guarantee buffer's safe operation.
Description
Technical field
The present invention relates to a kind of residual voltage harvester.
Background technology
At present, require that controller is grounded direction protection for state's net, scheme has the following two kinds：First, directly by adopting
The residual voltage output of collection threephase potential transformer, but this scheme cost price is too high；2nd, by gathering residual voltage sensing
The voltage output of device, this scheme cost is relatively low, but because of the residual voltage value very little of current residual voltage sensor output, and
Easily by extraneous high-frequency signal interference, cause that control terminal does not collect voltage or collection information is inaccurate, so as to control terminal
Cannot reliably controlling switch separating brake.
The content of the invention
It is an object of the invention to provide a kind of residual voltage harvester, is characterized in that：Residual voltage sensor（2）By line
Road ABC three-phase voltages are converted into residual voltage and export to isolated amplifier（14）, isolated amplifier（14）The external world can be effectively isolated
High-frequency Interference, and export to control terminal after the little residual voltage value for collecting is amplified, so as to ensure control terminal reliability
Ground operation.
For achieving the above object, the present invention provides following technical scheme：
A kind of residual voltage harvester, is characterized in that：Residual voltage of the material for epoxy resin outsourcing silicon rubber is passed
Sensor（2）Equidistantly it is fixed on installation underframe no less than 200mm according to spaced apart successively（3）On, a wire（1）It is connected to respectively
The ABC three-phases galvanic circle of switch, by 4 fixing holes（16）By wiring board（12）Switch internal is fixed on, to wiring board
（12）Pin 24V+（6）With pin 24V-（7）Apply DC24V voltages, by wiring board（12）Pin E（9）Ground connection, will be secondary
Wire（4）Respectively with wiring board（12）Pin T（10）With pin N（11）It is connected, residual voltage sensor（2）By circuit ABC
Three-phase voltage is converted into residual voltage elder generation Jing electric capacity（13）Export to isolated amplifier after filtering（15）, isolated amplifier（15）Every
From extraneous High-frequency Interference residual voltage signal is amplified simultaneously, through electric capacity（13）After filtering, by pin SO+（5）And pin
SO-（8）By residual voltage signal output to control terminal, in signal input and output loop one TVS pipe of parallel connection（14）, have
Effect absorption can cause isolated amplifier（15）The pulse of damage.
The present invention provides a kind of residual voltage harvester, residual voltage sensor（2）And wiring board（12）Coordinate, isolation
Extraneous High-frequency Interference is exported to control terminal after simultaneously is amplified residual voltage signal, is grounded direction protection, it is ensured that control
Terminal reliably controlling switch separating brake.
Description of the drawings
Accompanying drawing 1 is structural representation of the invention.
Accompanying drawing 2 is wiring board schematic diagram of the invention.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described.
In figure：1st, wire 2, residual voltage sensor 3, underframe 4, secondary wiring 5 are installed, pin SO+ 6, are drawn
Pin 24V+ 7, pin 24V- 8, pin SO- 9, pin E 10, pin T 11, pin N 12, wiring board 13, electric capacity C 14,
TVS pipe 15, isolated amplifier 16, fixing hole
As shown in Figure 1-2, it is of the invention by material for epoxy resin outsourcing silicon rubber residual voltage sensor（2）Successively
Installation underframe is equidistantly fixed on according to spaced apart no less than 200mm（3）On, a wire（1）The ABC tri- of switch is connected to respectively
Phase galvanic circle, by 4 fixing holes（16）By wiring board（12）Switch internal is fixed on, to wiring board（12）Pin 24V+
（6）With pin 24V-（7）Apply DC24V voltages, isolated amplifier（15）The pin of supply pin 23 and 24 connection+24V power supplys, by two
Secondary wire（4）Respectively with wiring board（12）Pin T（10）With pin N（11）It is connected, by pin T（10）With pin N（11）String
Connection electric capacity C（13）Afterwards respectively with isolated amplifier（15）Signal input pin 11 be connected with 12 pin, by wiring board（12）Pin E
（9）Ground connection, prevents wiring board（12）Electric leakage, injures the person and equipment, residual voltage sensor（2）By circuit ABC three-phase voltages
It is converted into residual voltage elder generation Jing electric capacity C（13）Filter and exported to isolated amplifier after different frequency range ripple（15）, isolated amplifier
（15）The extraneous High-frequency Interference of isolation simultaneously amplifies the residual voltage signal for collecting, by isolated amplifier（15）Signal output
The pin of pin 1 and 3 is exported, Jing electric capacity（13）After filtering, by wiring board（12）Pin SO+（5）With pin SO-（8）By zero sequence electricity
Pressure signal output is grounded direction protection to control terminal, it is ensured that control terminal reliably controlling switch separating brake, defeated in signal
Enter and an output loop difference TVS pipe in parallel（14）, effectively absorbing can cause isolated amplifier（15）The pulse of damage, it is ensured that
Isolated amplifier（15）Safe operation.
Claims (3)
1. a kind of residual voltage harvester, is characterized in that：Residual voltage sensor（2）It is fixed on installation underframe（3）On, once
Wire（1）The ABC three-phases galvanic circle of switch is connected to respectively, by 4 fixing holes（16）By wiring board（12）It is fixed on switch
Inside, to wiring board（12）Pin 24V+（6）With pin 24V-（7）Apply DC24V voltages, by wiring board（12）Pin E
（9）Ground connection, by secondary wiring（4）Respectively with wiring board（12）Pin T（10）With pin N（11）It is connected, residual voltage sensing
Device（2）Circuit ABC three-phase voltages are converted into into residual voltage elder generation Jing electric capacity（13）Export to isolated amplifier after filtering（15）, every
From amplifier（15）The extraneous High-frequency Interference of isolation simultaneously amplifies residual voltage signal, through electric capacity（13）After filtering, by drawing
Pin SO+（5）With pin SO-（8）By residual voltage signal output to control terminal, in signal input and output loop in parallel
Individual TVS pipe（14）, effectively absorbing can cause isolated amplifier（15）The pulse of damage.
2. a kind of residual voltage harvester according to claim 1, it is characterised in that：Residual voltage sensor（2）Deng
Spacing is arranged, and spaced apart is no less than 200mm.
3. a kind of residual voltage harvester according to claim 1, it is characterised in that：Residual voltage sensor（2）Material
Matter is epoxy resin outsourcing silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621133754.5U CN206096236U (en) | 2016-10-19 | 2016-10-19 | Zero sequence voltage collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621133754.5U CN206096236U (en) | 2016-10-19 | 2016-10-19 | Zero sequence voltage collection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206096236U true CN206096236U (en) | 2017-04-12 |
Family
ID=59976201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621133754.5U Active CN206096236U (en) | 2016-10-19 | 2016-10-19 | Zero sequence voltage collection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206096236U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966602A (en) * | 2016-10-19 | 2018-04-27 | 河南华盛隆源电气有限公司 | A kind of residual voltage harvester |
| CN108761189A (en) * | 2018-07-28 | 2018-11-06 | 贵州航天天马机电科技有限公司 | A kind of miniaturization voltage acquisition general module |
-
2016
- 2016-10-19 CN CN201621133754.5U patent/CN206096236U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966602A (en) * | 2016-10-19 | 2018-04-27 | 河南华盛隆源电气有限公司 | A kind of residual voltage harvester |
| CN108761189A (en) * | 2018-07-28 | 2018-11-06 | 贵州航天天马机电科技有限公司 | A kind of miniaturization voltage acquisition general module |
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