CN206850416U - Prevent the circuit that latching electromagnet is burnt out - Google Patents
Prevent the circuit that latching electromagnet is burnt out Download PDFInfo
- Publication number
- CN206850416U CN206850416U CN201621272012.0U CN201621272012U CN206850416U CN 206850416 U CN206850416 U CN 206850416U CN 201621272012 U CN201621272012 U CN 201621272012U CN 206850416 U CN206850416 U CN 206850416U
- Authority
- CN
- China
- Prior art keywords
- latching electromagnet
- circuit
- resistance
- circuit breaker
- electromagnet coil
- 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.)
- Expired - Fee Related
Links
- 230000001012 protector Effects 0.000 claims abstract description 16
- 230000007547 defect Effects 0.000 abstract description 3
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of circuit for preventing latching electromagnet from burning out is the utility model is related to, belongs to Relay Protection Technology in Power System field.The utility model in locked loop by adding thunder proof surge protector and the capacitance-resistance loop being made up of resistance, electric capacity; play double protection; effectively reduce rush of current; so as to extend the service life of latching electromagnet coil; reduce the power outage caused by latching electromagnet coil is burnt out, reach the purpose that circuit breaker mis-operation is prevented during the maintenance in 10kV switch cubicles, experiment and various defect eliminations.
Description
Technical field
It the utility model is related to Relay Protection Technology in Power System field, and in particular to one kind prevents latching electromagnet from burning out
Circuit.
Background technology
In order to ensure the safe operation of power system, ensure equipment and personal safety, maloperation is prevented, switch cubicle must have
It is standby to improve reliable interlock.Latching electromagnet in breaker (car switch) is the machine for blocking breaker switching-on operation
Structure, mainly prevent during operation staff to miss butt lock, cause danger, at the same ensure breaker in operating position or
Testing position could carry out closing operation.The course of work of latching electromagnet：When operation or secondary inserting piece are not extracted always
There is electric current to pass through electromagnet, electromagnetic actuation, breaker closing；Extraction secondary inserting piece, electromagnet dead electricity, middle iron core falls down,
Prevent breaker closing.
Utility model content
(1) technical problems to be solved
The technical problems to be solved in the utility model is：How to preventing locking electromagnetism in 10kV switch cubicles in secondary circuit
The loop that iron is burnt out is improved, and open circuit is prevented during the maintenance in 10kV switch cubicles, experiment and various defect eliminations so as to reach
The purpose of device maloperation.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model provides a kind of circuit for preventing latching electromagnet from burning out, bag
Include bridge rectifier V4, latching electromagnet coil Y1, thunder proof surge protector LY, electric capacity C1, resistance R1, auxiliary contacts of circuit breaker
QF, handcart testing position auxiliary contact S8 and handcart work location aided rebroadcast contact S9；
Bridge rectifier V4 first ends connection thunder proof surge protector LY first end, the ends of bridge rectifier V4 second difference
Connect electric capacity C1 and resistance R1 one end, bridge rectifier V4 three-terminal link auxiliary contacts of circuit breaker QF one end, lightning protection surge
Protector LY the second end connection latching electromagnet coil Y1 one end, the latching electromagnet coil Y1 other end, electric capacity C1
The other end and resistance the R1 other end connect described auxiliary contacts of circuit breaker QF one end, the auxiliary contacts of circuit breaker QF other end
Handcart testing position auxiliary contact S8 and handcart work location aided rebroadcast contact S9 one end are connected respectively.
Preferably, the 3rd end ground connection of the thunder proof surge protector LY.
(3) beneficial effect
The present invention is returned by the capacitance-resistance that thunder proof surge protector is added in locked loop and is made up of resistance, electric capacity
Road, double protection is played, effectively reduces rush of current, so as to extend the service life of latching electromagnet coil, reduced
The power outage caused by latching electromagnet coil is burnt out, has reached the maintenance in 10kV switch cubicles, experiment and various defect eliminations
During prevent the purpose of circuit breaker mis-operation.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Embodiment
To make the purpose of this utility model, content and advantage clearer, with reference to the accompanying drawings and examples, to this reality
It is described in further detail with new embodiment.
As shown in figure 1, the utility model embodiment provides a kind of circuit for preventing latching electromagnet from burning out, including bridge-type
Rectifier V4, latching electromagnet coil Y1, thunder proof surge protector LY, electric capacity C1, resistance R1, auxiliary contacts of circuit breaker QF, hand
Car testing position auxiliary contact S8 and handcart work location aided rebroadcast contact S9；
Bridge rectifier V4 first ends connection thunder proof surge protector LY first end, the ends of bridge rectifier V4 second difference
Connect electric capacity C1 and resistance R1 one end, bridge rectifier V4 three-terminal link auxiliary contacts of circuit breaker QF one end, lightning protection surge
Protector LY the second end connection latching electromagnet coil Y1 one end, the latching electromagnet coil Y1 other end, electric capacity C1
The other end and resistance the R1 other end connect described auxiliary contacts of circuit breaker QF one end, the auxiliary contacts of circuit breaker QF other end
Handcart testing position auxiliary contact S8 and handcart work location aided rebroadcast contact S9 one end are connected respectively.Thunder proof surge protector
LY the 3rd end ground connection.
The operation principle of the utility model embodiment is：Add thunder proof surge protector LY and by resistance R1, electric capacity C1
Before the capacitance-resistance loop of composition, combined floodgate electric blocking works as open circuit by the way that the auxiliary contact of reflection handcart position are linked up into loop
Device separating brake, auxiliary contacts of circuit breaker QF closures, possesses barring condition.When handcart is pushed into operating position, handcart work location aided rebroadcast
Contact S9 is closed, and locked loop connection, makes latching electromagnet coil Y1 moments powered, and when handcart is pushed out to testing position,
Handcart testing position auxiliary contact S8 is closed, and latching electromagnet coil Y1 same moments are powered.In push-and-pull due to being not at
Work or testing position, locked loop are that open circuit is currentless.When handcart is being tested and operating position is back and forth during push-and-pull, close
Locking electromagnet coil Y1 instantaneous can obtain electric dead electricity, the too fast coil burnout that can cause its latching electromagnet of change of electric current.And work as
After breaker closing, auxiliary contacts of circuit breaker QF normally-closed contacts are opened, and loop automatically terminates in open circuit, locking.
Due to thunder proof surge protector LY will be added in locked loop and by resistance R1, electric capacity C1 groups in the utility model
Into capacitance-resistance loop, the two loops can effectively gentle surge current, when connecting circuit moment, electric current passes through LY and resistance
Hold loop, the electric current speedup of script moment increase is slowed down, with protection blocking electromagnet coil, prevent it in the long-term push-and-pull of handcart
During be burned out.Meanwhile two loops can effectively reduce rush of current, play double protection, effectively
Reduce rush of current, so as to extend the service life of latching electromagnet coil, reduce caused by latching electromagnet coil is burnt out
Power outage.
Wherein thunder proof surge protector LY effect is when there is transient voltage, and high impedance is presented in it, with electric current, voltage
Reduction, its impedance constantly reduces so that electric current, voltage gently increase.Capacitance-resistance loop is resistance, electric capacity time in parallel formed
Road, for being depressured, advection, the appropriate capacitance that reduces causes impedance to increase, so that electric current reduces.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these change
Enter and deform and also should be regarded as the scope of protection of the utility model.
Claims (2)
1. a kind of circuit for preventing that latching electromagnet from burning out, it is characterised in that including bridge rectifier V4, latching electromagnet coil
Y1, thunder proof surge protector LY, electric capacity C1, resistance R1, auxiliary contacts of circuit breaker QF, handcart testing position auxiliary contact S8 and
Handcart work location aided rebroadcast contact S9；
Bridge rectifier V4 first ends connection thunder proof surge protector LY first end, the ends of bridge rectifier V4 second connect respectively
Electric capacity C1 and resistance R1 one end, bridge rectifier V4 three-terminal link auxiliary contacts of circuit breaker QF one end, lightning protection surge protection
Device LY the second end connection latching electromagnet coil Y1 one end, the latching electromagnet coil Y1 other end, electric capacity C1 it is another
End and resistance the R1 other end connect described auxiliary contacts of circuit breaker QF one end, auxiliary contacts of circuit breaker QF other end difference
Connect handcart testing position auxiliary contact S8 and handcart work location aided rebroadcast contact S9 one end.
2. the circuit as claimed in claim 1 for preventing that latching electromagnet from burning out, it is characterised in that the thunder proof surge protector
LY the 3rd end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621272012.0U CN206850416U (en) | 2016-11-24 | 2016-11-24 | Prevent the circuit that latching electromagnet is burnt out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621272012.0U CN206850416U (en) | 2016-11-24 | 2016-11-24 | Prevent the circuit that latching electromagnet is burnt out |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206850416U true CN206850416U (en) | 2018-01-05 |
Family
ID=60789382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621272012.0U Expired - Fee Related CN206850416U (en) | 2016-11-24 | 2016-11-24 | Prevent the circuit that latching electromagnet is burnt out |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206850416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684847A (en) * | 2016-11-24 | 2017-05-17 | 国家电网公司 | Circuit for preventing latching electromagnet from burning out |
-
2016
- 2016-11-24 CN CN201621272012.0U patent/CN206850416U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684847A (en) * | 2016-11-24 | 2017-05-17 | 国家电网公司 | Circuit for preventing latching electromagnet from burning out |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20211124 |