CN106206197A - There is the chopper of rated current automatic calibration function - Google Patents
There is the chopper of rated current automatic calibration function Download PDFInfo
- Publication number
- CN106206197A CN106206197A CN201610761283.0A CN201610761283A CN106206197A CN 106206197 A CN106206197 A CN 106206197A CN 201610761283 A CN201610761283 A CN 201610761283A CN 106206197 A CN106206197 A CN 106206197A
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- China
- Prior art keywords
- chopper
- current
- phase
- signal processing
- processing circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The present invention relates to a kind of chopper with rated current automatic calibration function.Being characterized in AC current transformer CT1, the secondary outlet side of CT2, CT3, CTN is respectively connected in signal processing circuit；Signal processing circuit by L1, L2, L3, LN tetra-the current signal of phase be converted into a relation control chip four phase signals altogether, then in four phase signals Access Control chips；One termination positive supply of touch key, one end of other end connecting resistance is also linked in control chip, the earth potential of the other end welding system of resistance；It is used for reading current intelligence control system and eight each pins rotating dial-ups of state are set respectively with in bus form Access Control chip.The present invention is by changing the position rotating dial-up; touch key is coordinated to realize automatically calibrating the rated current of chopper; realize the accurate protection to load electrical appliance; user changes, without the power consumption according to load-side, the chopper that more renews, practical and well achieve the chopper that a kind of rated current is calibrated automatically.
Description
Technical field
The invention belongs to a kind of chopper, particularly relate to a kind of chopper with rated current automatic calibration function.
Background technology
Along with the electronic technology extensive application in various fields, chopper kind apoplexy due to endogenous wind also occurs in that intelligent circuit breaker,
Possess protection curve adjustable, the intelligent functions such as four sections of protections, along with the application of intelligent circuit breaker is increasingly wider, its advantage
More and more obvious.But the rated current of general intelligent breaker is fixing, or a limited number of fixed value,
Certain restriction has been also suffered from during use.When user needs to be adjusted the rated current of chopper, just meet
Face and cannot adjust, or a limited number of selection does not has the situation of the rated value of correspondence, cause and can only select with close
Rated value replaces, and so can produce certain protection error, it is impossible to realize accurate intelligent protection.
Summary of the invention
The present invention solves technical problem present in known technology and a kind of tool realizing accurate intelligent protection is provided
There is the chopper of rated current automatic calibration function.
The present invention solves that technical problem is adopted the technical scheme that present in known technology: be used for measuring principal current
The secondary outlet side of the current transformer (CT1) of loop L1 phase current values accesses in signal processing circuit；For measuring principal current
The secondary outlet side of the current transformer (CT2) of loop L2 phase current values accesses in described signal processing circuit；For measuring master
The secondary outlet side of the current transformer (CT3) of current loop L3 phase current values accesses in described signal processing circuit；For surveying
The secondary outlet side of the current transformer (CTN) of amount main current loop LN phase current values accesses in described signal processing circuit；Institute
State signal processing circuit by L1, L2, L3, LN tetra-the current signal of phase be converted into a relation control chip (MCU) four altogether
Phase signals (IL1, IL2, IL3, ILN), the most described four phase signals (IL1, IL2, IL3, ILN) access described control chip
(MCU) in；One termination positive supply (VCC) of touch key (S9), one end of other end connecting resistance (R1) access are described to control
In coremaking sheet (MCU), the earth potential (GND) of the other end welding system of described resistance (R1)；Long for adjusting the overload of chopper
The rotation dial-up (S1) of delaying current protection feature, dial for adjusting the rotation of the overload long delay guardtime characteristic of chopper
Code (S2), for adjusting the rotation dial-up (S3) of the short circuit short time-delay current protection characteristic of chopper, for adjusting chopper
The rotation dial-up (S4) of short circuit short time-delay guardtime characteristic, for adjusting the rotation of the short-circuit transient current protection feature of chopper
Transfer code (S5), for adjusting the rotation dial-up (S6) of the rated current automatic calibration function of chopper, being used for adjusting chopper
Earth current protection feature rotation dial-up (S7) and for adjusting the rotation dial-up of ground connection guardtime characteristic of chopper
(S8) each pin of eight described rotation dial-ups accesses in described control chip (MCU) with bus form respectively.
The present invention has the advantage that with good effect: the scheme of this chopper is by changing the position rotating dial-up,
Coordinate touch key can realize automatically calibrating the rated current of chopper, it is achieved the accurate protection to load electrical appliance simultaneously,
User changes the chopper more renewed without the power consumption according to load-side, has the strongest practical advantages, well achieves
The chopper that a kind of rated current is calibrated automatically.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the present invention.
Detailed description of the invention
For present disclosure, feature and effect can be further appreciated that, hereby enumerate following example, and coordinate accompanying drawing detailed
It is described as follows:
As shown in the figure: Current Transmit 1 is used for measuring the current value of main current loop L1 phase, Current Transmit 1
Secondary outlet side accesses in signal processing circuit；Current Transmit 2 is for measuring the current value of main current loop L2 phase, electric current
The secondary outlet side of transformer CT2 accesses in signal processing circuit；Current Transmit 3 is for measuring main current loop L3 phase
Current value, the secondary outlet side of Current Transmit 3 accesses in signal processing circuit；Current Transmit N is used for measuring main electricity
Flowing back to the current value of road LN phase, the secondary outlet side of Current Transmit N accesses in signal processing circuit；Signal processing circuit will
Four phases L1, the current signal of L2, L3, LN is converted into relation control chip MCU signal IL1, IL2, IL3 altogether,
ILN, then by four phase signals IL1, in IL2, IL3, ILN Access Control chip MCU；The one termination positive supply of touch key S9
Then No. 1 pin of VCC, other end connecting resistance R1 is linked in control chip MCU, the ground of No. 2 pin welding systems of resistance R1
Current potential GND；Rotate each pin of dial-up S1-S8 respectively with in bus form Access Control chip MCU.
General four sections of protection features of chopper are all adjusted on the basis of rated current, can dial by rotating
Code (S1, S2, S3, S4, S5, S7, S8) adjusts overload long delay, short circuit short time-delay, and short circuit is instantaneous, ground protection characteristic；
If if the rated current of chopper meets the power of load-side electrical appliance, then the protection feature of chopper all can be to it
Load-side electrical appliance realizes effectively protection；If the power of the load-side electrical appliance of chopper changes, the specified electricity of chopper
Flow the electrical appliance power with its load-side not correspond, then can press light by adjusting the position to the 6th rotating dial-up S6 simultaneously
Touch of key-press S9；Control chip MCU detects that touch key S9 presses, and the indicating positions being detected simultaneously by rotating dial-up S6 is the
6, then can according to the major loop L1 arrived when pre-test, L2, L3, LN tetra-phase electric current in maximum automatically adjust chopper
Rated current the most equal (but the maximum adjusted value of rated current is not more than the housing currents of chopper), chopper simultaneously
Four sections of protection features all in accordance with adjust after rated current be adjusted, reach the purpose accurately protected.Rated current is automatic
After adjustment completes, the indicating positions rotating dial-up S6 is rotated to 1 position rotating dial-up S6, close rated current and adjust merit
Can, prevent maloperation.
Such as: the housing currents of chopper is 160A, rated current is 100A, and the electrical appliance of its load-side normally amounts to use
Electricity electric current is also 100A, then this chopper is without carrying out the adjustment of rated current；When the electrical appliance power of load-side changes
(such as: the quantity of electrical appliance adds or the power of electrical appliance changes), then the electrical appliance of load-side normally amounts to electricity consumption electricity
Stream is the most no longer 100A, but creates certain increase and decrease, and this official holiday sets changes into 75A, if the protection feature of now chopper
It is still and protects by the rated current of 100A, then cannot realize accurately protecting.The now rotation dial-up S6 of adjustable chopper
Indicating positions to the 6th, press touch key S9 simultaneously；The control chip MCU of chopper detects that touch key S9 presses,
And the indicating positions being detected simultaneously by rotating dial-up S6 is the 6th, then can be according to the major loop L1 arrived when pre-test, L2, L3, LN
Maximum in the electric current of four phases be 75A automatically adjust the rated current of chopper be 75A (but the maximum tune of rated current
Whole value is not more than the housing currents 160A of chopper), four sections of protection features of chopper are all in accordance with the specified electricity after adjusting simultaneously
Flow to Row sum-equal matrix, reach the purpose accurately protected.After rated current has adjusted automatically, the indicating positions rotation of dial-up S6 will be rotated
Go to rotate 1 position of dial-up S6, close rated current and adjust function, prevent the maloperation of touch key S9.
Claims (1)
1. there is a chopper for rated current automatic calibration function, it is characterized in that: be used for measuring main current loop L1 phase electric
The secondary outlet side of the current transformer (CT1) of flow valuve accesses in signal processing circuit；Electric for measuring main current loop L2 phase
The secondary outlet side of the current transformer (CT2) of flow valuve accesses in described signal processing circuit；For measuring main current loop L3
The secondary outlet side of the current transformer (CT3) of phase current values accesses in described signal processing circuit；Return for measuring principal current
The secondary outlet side of the current transformer (CTN) of road LN phase current values accesses in described signal processing circuit；Described signal processing
Circuit by L1, L2, L3, LN tetra-the current signal of phase be converted into a relation control chip (MCU) four phase signals altogether (IL1,
IL2, IL3, ILN), the most described four phase signals (IL1, IL2, IL3, ILN) are accessed in described control chip (MCU)；Touch by
One termination positive supply (VCC) of key (S9), one end of other end connecting resistance (R1) access are described in control chip (MCU),
The earth potential (GND) of the other end welding system of described resistance (R1)；Special for adjusting the overload long delay current protection of chopper
Property rotation dial-up (S1), for adjust chopper overload long delay guardtime characteristic rotation dial-up (S2), be used for adjusting
The rotation dial-up (S3) of the short circuit short time-delay current protection characteristic of whole chopper, for adjusting the short circuit short time-delay time of chopper
The rotation dial-up (S4) of protection feature, for adjusting the rotation dial-up (S5) of the short-circuit transient current protection feature of chopper, using
In the rotation dial-up (S6) of the rated current automatic calibration function adjusting chopper, for adjusting the earth current protection of chopper
The rotation dial-up (S7) of characteristic and described in adjust eight of the rotation dial-up (S8) of the ground connection guardtime characteristic of chopper
Each pin rotating dial-up accesses in described control chip (MCU) with bus form respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761283.0A CN106206197A (en) | 2016-08-29 | 2016-08-29 | There is the chopper of rated current automatic calibration function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761283.0A CN106206197A (en) | 2016-08-29 | 2016-08-29 | There is the chopper of rated current automatic calibration function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106206197A true CN106206197A (en) | 2016-12-07 |
Family
ID=58088401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610761283.0A Pending CN106206197A (en) | 2016-08-29 | 2016-08-29 | There is the chopper of rated current automatic calibration function |
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| Country | Link |
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| CN (1) | CN106206197A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151606A (en) * | 1995-12-07 | 1997-06-11 | 刘旭东 | Rated current regulating leakage automatic circuit breaker |
| CN2636472Y (en) * | 2003-06-27 | 2004-08-25 | 李乾良 | Electron type rated current adjustable protector |
| CN201359981Y (en) * | 2009-03-18 | 2009-12-09 | 江苏辉能电气有限公司 | Automatic recloser residual current circuit breaker with function of automatically adjusting leakage parameters |
| CN201466696U (en) * | 2009-06-02 | 2010-05-12 | 河北德普电器有限公司 | Integrated monitoring device of stage head protection and grounding for DC system |
| CN201838996U (en) * | 2010-05-31 | 2011-05-18 | 江南机电设计研究所 | Intelligent controller for breaker with plastic shell |
| CN103021752A (en) * | 2011-09-21 | 2013-04-03 | 丁雪强 | Circuit breaker adaptive to automatic current parameter calibration |
| CN206022278U (en) * | 2016-08-29 | 2017-03-15 | 天津市百利电气有限公司 | The chopper of rated current is calibrated automatically can |
-
2016
- 2016-08-29 CN CN201610761283.0A patent/CN106206197A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151606A (en) * | 1995-12-07 | 1997-06-11 | 刘旭东 | Rated current regulating leakage automatic circuit breaker |
| CN2636472Y (en) * | 2003-06-27 | 2004-08-25 | 李乾良 | Electron type rated current adjustable protector |
| CN201359981Y (en) * | 2009-03-18 | 2009-12-09 | 江苏辉能电气有限公司 | Automatic recloser residual current circuit breaker with function of automatically adjusting leakage parameters |
| CN201466696U (en) * | 2009-06-02 | 2010-05-12 | 河北德普电器有限公司 | Integrated monitoring device of stage head protection and grounding for DC system |
| CN201838996U (en) * | 2010-05-31 | 2011-05-18 | 江南机电设计研究所 | Intelligent controller for breaker with plastic shell |
| CN103021752A (en) * | 2011-09-21 | 2013-04-03 | 丁雪强 | Circuit breaker adaptive to automatic current parameter calibration |
| CN206022278U (en) * | 2016-08-29 | 2017-03-15 | 天津市百利电气有限公司 | The chopper of rated current is calibrated automatically can |
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Application publication date: 20161207 |