CN207853455U - A kind of vacuum circuit breaker anti-jump loop - Google Patents
A kind of vacuum circuit breaker anti-jump loop Download PDFInfo
- Publication number
- CN207853455U CN207853455U CN201820254782.5U CN201820254782U CN207853455U CN 207853455 U CN207853455 U CN 207853455U CN 201820254782 U CN201820254782 U CN 201820254782U CN 207853455 U CN207853455 U CN 207853455U
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- China
- Prior art keywords
- contact
- spot
- intermediate relay
- switch
- normally closed
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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.)
- Expired - Fee Related
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- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 230000001012 protector Effects 0.000 claims abstract description 16
- 238000005516 engineering process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Keying Circuit Devices (AREA)
Abstract
The utility model discloses a kind of vacuum circuit breaker anti-jump loops; including change-over switch, external control cabinet contact, internal control case contact, connection sheet, intermediate relay and trip protection circuit; the change-over switch includes long-range contact and contact on the spot; the trip protection circuit includes intellective protector normally closed contact, D.C. contactor, breaking coil and the first monitoring point and the second monitoring point that are placed in breaking coil both ends, and the intermediate relay includes intermediate relay coil and intermediate relay contact.Increase trip protection circuit; the first monitoring point is connected at breaking coil both ends and the second monitoring point feeds back to intellective protector normally closed contact to detect whether failure; the defencive function of fault is realized by the switch of intellective protector normally closed contact, and simple and fast solves the problems, such as trip protection.
Description
Technical field
The utility model is related to circuit breaker protective circuit, especially a kind of vacuum circuit breaker anti-jump loop.
Background technology
The effect of anti-jump loop：Prevent the combined floodgate contact because of control switch or automatic device from failing to return in time and (such as grasp
Make the non-release handle of personnel, the combined floodgate contact adhesion of automatic device) and just close a floodgate on faulty line and equipment, cause open circuit
Device continuously closes and cuts phenomenon.Common anti-jump loop has tandem anti-jump loop, parallel anti-jump loop, the anti-rebound of spring energy-storage
Road, breaking coil auxiliary contact formula anti-jump loop etc..It is anti-jump to mostly use tandem for existing technology in the market.
So-called tandem is anti-jump, i.e. anti-trip relay TBJ is connected on the trip(ping) circuit of breaker by current start, the coil
In.Voltage hold-in winding is in parallel with the closing coil of breaker.When closing a floodgate onto faulty line or equipment, then relay protection is dynamic
Make, the current coil of anti-trip relay TBJ starts at this time, while circuit breaker trip, and the normally closed contact of TBJ disconnects closing circuit,
Another pair normal opened contact is connected potential winding and is kept.If SA (1-2) contact cannot return at this time and 1K continues to send out combined floodgate life
It enables, since closing circuit has been disconnected, breaker cannot close a floodgate, to reach anti-jump purpose.As shown in Figure 1.This series connection is anti-
Although jumping realizes the anti-bouncing function of permanent magnet type vacuum circuit-breaker, due to the work characteristics of permanent magnet mechanism itself, it is existing
The control loop of Fig. 1, while the operation circuit such as Fig. 2 is also needed to, if operation error, the 1ZK being only closed in Fig. 1, and do not have
There is the 2ZK being closed in Fig. 2, when carrying out closing operation, the HQ in Fig. 2 cannot get electricity, and breaker can not close a floodgate, and the QF in Fig. 2 is not
It can be converted, while the normally closed nodes of TBJ can not be opened, be easy to cause HC contactor coil scaling loss.Permanent magnet type vacuum open circuit
Device using TBJ anti-trip relay carry out series connection anti-bouncing function it is too single.
Utility model content
Utility model aims to solve the above prior art problems, provide a kind of vacuum circuit breaker anti-jump loop.
To realize that object above provides following technical scheme：
A kind of vacuum circuit breaker anti-jump loop, including change-over switch, external control cabinet contact, internal control case contact, company
Contact pin, intermediate relay and trip protection circuit, the change-over switch include long-range contact and contact on the spot, the trip protection
Circuit includes intellective protector normally closed contact, D.C. contactor, breaking coil and the first monitoring point for being placed in breaking coil both ends
With the second monitoring point, the intermediate relay includes intermediate relay coil and intermediate relay contact, the internal control case
Contact is connected with intermediate relay coil, the long-range contact, intermediate relay contact, intellective protector normally closed contact and direct current
Contactor connect, the contact on the spot connect with switch knob on the spot and with long-range contact and intermediate relay contact shunt, institute
It is in parallel with switch knob on the spot to state opening button on the spot, and connect with the first monitoring point, the second monitoring point and breaking coil.
Preferably, the first normally closed position of connecting between the intellective protector normally closed contact and D.C. contactor switch and
First normally closed auxiliary switch, the second normally open position of the first normally closed position switch in parallel switch.
Preferably, the second normally opened auxiliary switch of connecting between opening button and breaking coil on the spot.
Preferably, the external control cabinet contact includes level-one normal opened contact, two level contact and three-level contact, the level-one
Normal opened contact is connected with connection sheet, and with opening button on the spot and on the spot contact shunt.
Preferably, the two level contact series connection third normally opened contact, the 4th normally-closed contact of the three-level contact series connection.
The beneficial effects of the utility model are：Increase trip protection circuit, the first monitoring point is connected at breaking coil both ends
Intellective protector normally closed contact is fed back to detect whether failure with the second monitoring point, passes through intellective protector normally closed contact
It switchs to realize the defencive function of fault, simple and fast solves the problems, such as trip protection.
Description of the drawings
Fig. 1 is series connection anti-jump loop；
Fig. 2 is anti-jump operation circuit of connecting；
Fig. 3 is vacuum circuit breaker anti-jump loop.
Specific implementation mode
Present design is described in detail below in conjunction with attached drawing.
Series connection anti-jump loop as shown in Figure 1, including change-over switch, external control cabinet contact S40, internal control case contact
S401, connection sheet LP1, intermediate relay and trip protection circuit DL, change-over switch include long-range contact SA1 and contact on the spot
SA2, trip protection circuit DL include intellective protector normally closed contact i.e. MGB1-8 contacts and MGB1-9 contacts, D.C. contactor
HC, breaking coil TQ and the first monitoring point MGB1-5 and the second monitoring point MGB1-6 for being placed in the both ends breaking coil TQ, it is intermediate after
Electric appliance includes intermediate relay coil 1K and intermediate relay contact 1K1, internal control case contact S401 and intermediate relay line
1K series connection is enclosed, long-range contact SA1, intermediate relay contact 1K1, intellective protector normally closed contact and D.C. contactor HC connect,
Contact SA2 connects and in parallel with long-range contact SA1 and intermediate relay contact 1K1 with switch knob SB1 on the spot on the spot, divides on the spot
Lock button SB2 is in parallel with switch knob SB1 on the spot, and with the first monitoring point MGB1-5, the second monitoring point MGB1-6 and tripping line
Enclose TQ series connection.
Wherein, connect the first normally closed position switch S8 and between intellective protector normally closed contact and D.C. contactor HC
One normally closed auxiliary switch QF, first the second normally open position switch S9 of normally closed position switch S8 parallel connections.
Wherein, connect between opening button SB2 and breaking coil TQ the second normally opened auxiliary switch QF2 on the spot.
Wherein, external control cabinet contact includes level-one normal opened contact S1, two level contact I12With three-level contact I11, level-one is normally opened
Contact S1Connect with connection sheet LP1, and with opening button SB2 on the spot and contact SA2 is in parallel on the spot.
Wherein, two level contact I12Connect third normally opened contact QF3, three-level contact I11It connects the 4th normally closed contacts QE4.
There are two types of modes for closing operation：Manually (on the spot), far control (remote control).Closing by hand operates：First change-over switch is beaten
To contact SA2 on the spot, switch knob SB1 closures switching current can will be connect on the spot by intellective protector normally closed contact, that is, MGB1-8
Point and MGB1-9 contacts, the second normally opened auxiliary switch QF2 are given to D.C. contactor HC and complete closing operation.Remote control is closed a floodgate：First will
Change-over switch gets to long-range contact SA1, and external control cabinet contact S40 is closed, and sends out reclosing command, intermediate relay coil 1K is obtained
Electric intermediate relay contact 1K1 is closed, and equally completes closing operation with manual operation later.Both closing operating times are all
For second grade, and it is Millisecond to switch splitting or integrating lock actuation time all.So when switch completes the action of splitting or integrating lock, splitting or integrating lock
Instruction releases not yet.So while switch has closed lock, if faulty on circuit, trip protection step switch breaking coil
TQ obtains electric switch tripping.This is that reclosing command releases not yet, and switch can close a floodgate again, closes jump in this way, close and jump, switch is jumped
Jump has occurred, and this switch jump has destructiveness to the electrical equipment of Switch main body and switch institute band.This feelings in order to prevent
Condition occurs, in breaking coil TQ series connection the first monitoring point MGB1-5 and the second monitoring point MGB1-6 of switch, when it monitors to jump
There is signal in lock circuit, it can open intellective protector normally closed contact, that is, closing circuit is disconnected, even if reclosing command is also
Have, switch also can not be completed feed motion, realize switch anti-bouncing function.
Claims (5)
1. a kind of vacuum circuit breaker anti-jump loop, which is characterized in that including change-over switch, external control cabinet contact, internal control
Case contact, connection sheet, intermediate relay and trip protection circuit, the change-over switch include long-range contact and contact on the spot, institute
Trip protection circuit is stated to include intellective protector normally closed contact, D.C. contactor, breaking coil and be placed in breaking coil both ends
First monitoring point and the second monitoring point, the intermediate relay include intermediate relay coil and intermediate relay contact, described
Internal control case contact is connected with intermediate relay coil, and the long-range contact, intermediate relay contact, intellective protector are normally closed
Contact and D.C. contactor series connection, the contact on the spot are connected with switch knob on the spot and are touched with long-range contact and intermediate relay
Point is in parallel, and the opening button on the spot is in parallel with switch knob on the spot, and with the first monitoring point, the second monitoring point and breaking coil
Series connection.
2. a kind of vacuum circuit breaker anti-jump loop according to claim 1, which is characterized in that the intellective protector is normal
Connect the first normally closed position switch and the first normally closed auxiliary switch, first normally closed position are closed between contact and D.C. contactor
The second normally open position of switch in parallel switchs.
3. a kind of vacuum circuit breaker anti-jump loop according to claim 1, which is characterized in that the opening button on the spot with
The second normally opened auxiliary switch of series connection between breaking coil.
4. a kind of vacuum circuit breaker anti-jump loop according to claim 1, which is characterized in that the external control cabinet contact
Including level-one normal opened contact, two level contact and three-level contact, the level-one normal opened contact is connected with connection sheet, and with separating brake on the spot
Button and on the spot contact shunt.
5. a kind of vacuum circuit breaker anti-jump loop according to claim 4, which is characterized in that two level contact series connection the
Three normally opened contacts, the 4th normally-closed contact of the three-level contact series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254782.5U CN207853455U (en) | 2018-02-13 | 2018-02-13 | A kind of vacuum circuit breaker anti-jump loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254782.5U CN207853455U (en) | 2018-02-13 | 2018-02-13 | A kind of vacuum circuit breaker anti-jump loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207853455U true CN207853455U (en) | 2018-09-11 |
Family
ID=63409790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820254782.5U Expired - Fee Related CN207853455U (en) | 2018-02-13 | 2018-02-13 | A kind of vacuum circuit breaker anti-jump loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207853455U (en) |
-
2018
- 2018-02-13 CN CN201820254782.5U patent/CN207853455U/en not_active Expired - Fee Related
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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: 20180911 |