CN106329498A - Protection circuit for six-head balance main power circuit - Google Patents
Protection circuit for six-head balance main power circuit Download PDFInfo
- Publication number
- CN106329498A CN106329498A CN201610808120.3A CN201610808120A CN106329498A CN 106329498 A CN106329498 A CN 106329498A CN 201610808120 A CN201610808120 A CN 201610808120A CN 106329498 A CN106329498 A CN 106329498A
- Authority
- CN
- China
- Prior art keywords
- main power
- power supply
- circuit
- protection circuit
- power line
- Prior art date
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention aims at providing a protection circuit for a six-head balance main power circuit, which comprises a main power line, a voltage-regulating module power supply and a switching power supply, wherein the main power line comprises a fire wire L, a neutral wire N and a grounding wire PE; the main power line is respectively connected with the voltage-regulating module and the switching power supply; the main power line, the voltage-regulating module and the switching power supply are provided with a protection circuit for protecting branch circuits; and the protection circuit is composed of air switches QF1, QF2 and QF3 on the lines of the main power line, the voltage-regulating module power supply and the switching power supply. The circuits can be cut off quickly, reliable protection is carried out, the circuit protection strength is improved, the power utilization safety is improved, damages to electrical components can be reduced, the maintenance period is prolonged, the service life is increased, and the maintenance cost is reduced.
Description
Technical field
The present invention relates to the field in terms of six scales, research and develop including matching six scale aspects and improve, particularly relate to
Protection circuit to a kind of six scale main power circuits.
Background technology
Along with progress and the development of science and technology of technology, the weighing and bagging for product progresses into intensive, produces greatly
In the epoch, when product is packed, product will carry out weighing process, when present stage weighs, six weighers are the weighings that 6 sets are independent
System forms, and often set Weighing system includes weighing instrument, LOAD CELLS, voltage regulator controllers, vibrations coil, discharge mechanism, unloads
Material mechanism.What PLC was responsible for collecting 6 set weighing systems weighs up signal, then sends standby ready signal to packer, waits to be received
The request blowing signal of packer, but when the use of six scales, supply voltage is directly powered generally by external circuit,
Often lack necessary protection, substantial amounts of electric current can be carried when circuit ON and disjunction, therefore can cause electric components
Badly damaged, have a strong impact on the service life of six scales, decreased maintenance cycle, add use cost.
Therefore it provides the protection circuit of a kind of six scale main power circuits, to the main power source at six scales can be passed through
Arranging protection circuit on circuit, protected by the air switch in protection circuit, each branch circuit all uses air switch
Protect, air switch i.e. air-break, and can circuit and load transship, short-circuit, under-voltage when,
Disjunction circuit, protects reliably rapidly, improves the protection intensity of circuit, improves the safety of electricity consumption, reduces electrically unit's device
The damage of part, extends maintenance cycle, increases service life, reduces maintenance cost, just becomes those skilled in the art and need solution badly
Problem.
Summary of the invention
It is an object of the invention to provide the protection circuit of a kind of six scale main power circuits, to passing through at six scales
Main power circuit on protection circuit is set, protected by the air switch in protection circuit, each branch circuit all uses
Air switch is protected, air switch i.e. air-break, and can circuit and load transship, short-circuit, under-voltage
When, rapid disjunction circuit, protect reliably, improve the protection intensity of circuit, improve the safety of electricity consumption, it is right to reduce
The damage of electric components, extends maintenance cycle, increases service life, reduces maintenance cost.
For solving technical problem described in background technology, the present invention by the following technical solutions:
A kind of protection circuit of six scale main power circuits, including main power line, voltage regulating module power supply and Switching Power Supply,
Described main power line includes live wire L, neutral conductor N and earth lead PE, described main power line respectively with voltage regulating module and
Switching Power Supply connects, and described main power line is provided with, with voltage regulating module and Switching Power Supply, the protection protecting branch circuit
Circuit, protection circuit is by air switch QF1, QF2, the QF3 on the circuit of main power line, voltage regulating module power supply and Switching Power Supply
Constitute.
Preferably, the live wire L and neutral conductor N of described main power line is provided with air switch QF1, main power line with
Connecting line L2 and N2 between voltage regulating module power supply is provided with air switch QF2, the company between main power line and Switching Power Supply
Wiring L3 and N3 is provided with air switch QF3.
Preferably, the earth terminal PE:2 of described Switching Power Supply is connected with earth lead PE.
Preferably, the power port of connecting line L3 and N3 between described Switching Power Supply and main power line and PLC is even
Connect.
Preferably, the safe voltage electric current of air switch F1, QF2, QF3 in described protection circuit is set to 6A.
Preferably, described earth lead PE and port A1/2 common ground connection.
Inventive principle, electric power incoming line uses air switch to protect, and each branch circuit all uses air switch to protect
Protect, air switch i.e. air-break, connect in circuit, disjunction and carrying rated operational current and short circuit, overload
Deng fault current, and can transship at circuit and load, short-circuit, under-voltage when, rapid disjunction circuit, carry out reliably
Protection, dynamic and static contact and the feeler lever design type of chopper are various, but the breaking capacity improving chopper is main purpose.
The invention has the beneficial effects as follows:
1), being protected by the air switch in protection circuit, each branch circuit all uses air switch to protect,
Air switch i.e. air-break, and can circuit and load transship, short-circuit, under-voltage when, rapid disjunction
Circuit, protects reliably, improves the protection intensity of circuit, improves the safety of electricity consumption.
2), reduce the damage to electric components, extend maintenance cycle, increase service life, reduce maintenance cost.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only described in the present invention
A little embodiments, for those of ordinary skill in the art, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the protection circuit figure of the protection circuit detailed description of the invention of a kind of six scale main power circuits of the present invention.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with accompanying drawing to this
Bright it is further detailed.
Refer to Fig. 1, the protection circuit of a kind of six scale main power circuits, including main power line, voltage regulating module power supply
And Switching Power Supply, described main power line includes live wire L, neutral conductor N and earth lead PE, described main power line respectively with
Voltage regulating module and Switching Power Supply connect, and described main power line is provided with voltage regulating module and Switching Power Supply and carries out branch circuit
The protection circuit of protection, protection circuit is by the air switch on the circuit of main power line, voltage regulating module power supply and Switching Power Supply
QF1, QF2, QF3 are constituted.
Further, the live wire L and neutral conductor N of described main power line is provided with air switch QF1, main power line
And connecting line L2 and N2 between voltage regulating module power supply is provided with air switch QF2, between main power line and Switching Power Supply
Connecting line L3 and N3 is provided with air switch QF3.
Further, the earth terminal PE:2 of described Switching Power Supply is connected with earth lead PE.
Further, the power port of connecting line L3 and N3 between described Switching Power Supply and main power line and PLC
Connect.
Further, the safe voltage electric current of air switch F1, QF2, QF3 in described protection circuit is set to 6A.
Further, described earth lead PE and port A1/2 common ground connection.
Further, electric power incoming line uses air switch to protect, and each branch circuit all uses air switch to protect
Protect, air switch i.e. air-break, connect in circuit, disjunction and carrying rated operational current and short circuit, overload
Deng fault current, and can transship at circuit and load, short-circuit, under-voltage when, rapid disjunction circuit, carry out reliably
Protection, dynamic and static contact and the feeler lever design type of chopper are various, but the breaking capacity improving chopper is main purpose.
By the way of explanation, only describe some one exemplary embodiment of the present invention above, undoubtedly, for ability
The those of ordinary skill in territory, in the case of without departing from the spirit and scope of the present invention, can be by various different modes to institute
The embodiment described is modified.Therefore, above-mentioned accompanying drawing and description are the most illustrative, should not be construed as the present invention
The restriction of claims.
Claims (6)
1. a protection circuit for six scale main power circuits, including main power line, voltage regulating module power supply and Switching Power Supply, its
Be characterised by: described main power line includes live wire L, neutral conductor N and earth lead PE, described main power line respectively with tune
Die block and Switching Power Supply connect, and described main power line is provided with voltage regulating module and Switching Power Supply and protects branch circuit
The protection circuit protected, protection circuit is by the air switch on the circuit of main power line, voltage regulating module power supply and Switching Power Supply
QF1, QF2, QF3 are constituted.
The protection circuit of a kind of six scale main power circuits the most according to claim 1, it is characterised in that described main electricity
The live wire L and neutral conductor N of source circuit are provided with air switch QF1, the connecting line between main power line and voltage regulating module power supply
L2 and N2 is provided with air switch QF2, and connecting line L3 and N3 between main power line and Switching Power Supply is provided with air switch
QF3。
The protection circuit of a kind of six scale main power circuits the most according to claim 1, it is characterised in that described switch
The earth terminal PE:2 of power supply is connected with earth lead PE.
The protection circuit of a kind of six scale main power circuits the most according to claim 1, it is characterised in that described switch
The power port of connecting line L3 and N3 and the PLC between power supply with main power line is connected.
The protection circuit of a kind of six scale main power circuits the most according to claim 1, it is characterised in that described protection
The safe voltage electric current of air switch F1, QF2, QF3 on circuit is set to 6A.
The protection circuit of a kind of six scale main power circuits the most according to claim 1, it is characterised in that described ground connection
Line PE and port A1/2 common ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808120.3A CN106329498A (en) | 2016-09-07 | 2016-09-07 | Protection circuit for six-head balance main power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808120.3A CN106329498A (en) | 2016-09-07 | 2016-09-07 | Protection circuit for six-head balance main power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106329498A true CN106329498A (en) | 2017-01-11 |
Family
ID=57787579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610808120.3A Pending CN106329498A (en) | 2016-09-07 | 2016-09-07 | Protection circuit for six-head balance main power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106329498A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487193A (en) * | 2010-12-06 | 2012-06-06 | 西安远征智能软件有限公司 | Self-powered overcurrent protection device |
| CN103166169A (en) * | 2011-12-19 | 2013-06-19 | 西安广融电气有限公司 | Figure overcurrent relay protective circuit |
| CN204497496U (en) * | 2015-03-20 | 2015-07-22 | 中山市唐王光电技术有限公司 | The safe energization socket of Almightiness type |
| CN204912401U (en) * | 2015-04-20 | 2015-12-30 | 安徽工程大学 | Copper alloy horizontal continuous casting tractor automatic control system |
-
2016
- 2016-09-07 CN CN201610808120.3A patent/CN106329498A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487193A (en) * | 2010-12-06 | 2012-06-06 | 西安远征智能软件有限公司 | Self-powered overcurrent protection device |
| CN103166169A (en) * | 2011-12-19 | 2013-06-19 | 西安广融电气有限公司 | Figure overcurrent relay protective circuit |
| CN204497496U (en) * | 2015-03-20 | 2015-07-22 | 中山市唐王光电技术有限公司 | The safe energization socket of Almightiness type |
| CN204912401U (en) * | 2015-04-20 | 2015-12-30 | 安徽工程大学 | Copper alloy horizontal continuous casting tractor automatic control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170111 |
|
| RJ01 | Rejection of invention patent application after publication |