CN205911655U - Lock -up control return circuit - Google Patents
Lock -up control return circuit Download PDFInfo
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- CN205911655U CN205911655U CN201620561446.6U CN201620561446U CN205911655U CN 205911655 U CN205911655 U CN 205911655U CN 201620561446 U CN201620561446 U CN 201620561446U CN 205911655 U CN205911655 U CN 205911655U
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- cabinet
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- little bus
- lock
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- 230000000903 blocking effect Effects 0.000 claims abstract description 35
- 230000011218 segmentation Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 3
- 210000004247 hand Anatomy 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 description 7
- 230000006698 induction Effects 0.000 description 4
- 239000002671 adjuvant Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000411 inducer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model provides a lock -up control return circuit, it is electric and lower through setting up the little generating line of first shutting and puing aside going up of the little generating line of the position auxiliary contact first shutting of control through generating line grounding handcart to break -make electricity of the first handcart blocking device of this control in each cubical switchboard, the shutting of the handcart of generating line grounding handcart in to each cubical switchboard when having guaranteed to examine and repair. Need not heavy dynamic relay and provide auxiliary contact to each cubical switchboard after the extension, simplified the wiring, avoided heavy dynamic relay to receive the defect that multiple power supplies lost the influence of electricity easily, accord with the requirement that prevents electric maloperation, saved a lot of control cable again simultaneously, promoted lock -up control return circuit's security and economic nature.
Description
Technical field
This utility model is related to electrical equipment technical field and in particular to a kind of lock-in control loop.
Background technology
Busbar grounding handcart is generally mounted in voltage transformer cabinet (pt cabinet), is configured with voltage transformer cabinet (pt cabinet)
The auxiliary contact of voltage mutual inducer trolley and busbar grounding handcart and secondary distribution.By busbar grounding handcart from electricity during normal operation
In pressure transformer cabinet (pt cabinet), pull-out, voltage mutual inducer trolley is pushed and is measured or measured work；By voltage during maintenance
Transformer handcart pulls out, and busbar grounding handcart is pushed in voltage transformer cabinet (pt cabinet) so that bus reliable ground, improves
Work efficiency during maintenance.
It can be seen that, busbar grounding handcart is to ensure that the essential safety of personal security sets when high-tension distribution equipment overhauls
Standby, on busbar grounding handcart and this section of bus, the necessary safety of five anti-interlockings of the other handcarts in addition to busbar grounding handcart can
By it is ensured that being not in the maloperation such as power transmission when powered behaviour closes earthed switch or earthed switch combined floodgate.Often utilize bus belt at present
Electric display removes locking busbar grounding handcart, closes grounding switch in the case of preventing bus powered；On the other hand utilize busbar grounding
The auxiliary contact of handcart removes locking other handcart, prevents line with ground from closing a floodgate.But there is following defect in such scheme: (1) works as band
Electric display is likely to result in when breaking down closing grounding switch in the case of bus is powered；(2) when bus dead electricity, on bus
, when closing position, electrification display display bus is not charged, and the grounding switch that now closes is safe on and off switch, once but bus
The situation recovering to tend to ignore during power transmission grounding switch ground connection leads to the generation of accident；(3) by institute on one section of bus
The switch cubicle of band is more, and the auxiliary contact of busbar grounding handcart itself is limited, needs to provide extension by weight motor type relay
Other switch cubicles to this section of bus for the auxiliary contact afterwards, other handcarts are concatenated to the auxiliary contact institute of busbar grounding handcart
In the lock-in control loop being formed.But extending auxiliary contact by weight motor type relay is easily affected by multiple power loss,
Do not meet the requirement preventing electric misoperation, need substantial amounts of cable to carry out wiring, safety economy is poor simultaneously again yet.
Utility model content
The technical problems to be solved in the utility model is that lock-in control loop of the prior art needs to continue by again dynamic
Electrical equipment extends auxiliary contact, does not also meet, more than wiring, the requirement preventing electric misoperation, safety and economy are poor.
Another technical problem to be solved in the utility model is that lock-in control loop of the prior art needs to pass through
Electrification display carries out locking to busbar grounding handcart, there is potential safety hazard.
For this reason, this utility model embodiment provides following technical scheme:
This utility model provides a kind of lock-in control loop, comprising: control little bus, the little bus of the first locking, at least
Two busbar grounding handcarts remove location aided rebroadcast contact and multiple first handcart locking device；
The little bus of described control, its electrode line connects positive supply, and its negative line connects negative supply；
The little bus of described first locking, its electrode line and negative line are removed by corresponding described busbar grounding handcart respectively
Location aided rebroadcast contact controls the electrode line of little bus and negative line to be connected with described；
Described busbar grounding handcart removes location aided rebroadcast contact, is arranged at the described voltage transformer controlling on little bus
In cabinet (pt cabinet), and the closure in busbar grounding handcart pull-out described voltage transformer cabinet (pt cabinet)；
Described first handcart locking device, be distributed in described control little bus on except described voltage transformer cabinet (pt cabinet) with
In outer other switch cubicles, the two ends positive pole with the little bus of described first locking respectively of each described first handcart locking device
Line and negative line connect, and the handcart of its place switch cubicle of locking when power is off.
Lock-in control loop described in the utility model, removes location aided rebroadcast contact including 4 busbar grounding handcarts, and often
Two busbar grounding handcarts are removed after location aided rebroadcast contact is connected in parallel, then connect the described electrode line controlling little bus respectively
With the electrode line of the little bus of described first locking, and the described negative line of little bus and the little bus of described first locking of controlling
Negative line.
Lock-in control loop described in the utility model, described first handcart locking device includes the first handcart locking electromagnetism
Ferrum, is installed in the cabinet door of its corresponding switch cubicle, and during each described first handcart latching electromagnet power-off, its corresponding switch cubicle
Handcart locked.
Lock-in control loop described in the utility model, the little bus of described first locking is arranged on described switch cubicle and described
The cabinet top of voltage transformer cabinet (pt cabinet).
Lock-in control loop described in the utility model, described switch cubicle include incoming line cabinet, circuit outgoing line cabinet, ground connection become
At least one in line cabinet, capacitor outgoing line cabinet, segmentation lifting cabinet and segmentation cabinet.
Lock-in control loop described in the utility model, also includes: the little bus of the second locking, multiple other handcart experiment position
Put auxiliary contact and the second blocking device；
Each described other handcart experimental site auxiliary contact corresponds to the handcart in a described switch cubicle, and it is corresponding
When handcart is in operating position, described other handcart experimental site auxiliary contact disconnects；
Described second blocking device, is arranged in described voltage transformer cabinet (pt cabinet), and mother described in locking when power is off
Line earth handcart；
Described other handcart experimental site auxiliary contact and described second blocking device are all connected and are accessed described second locking
Little bus, and during all of other handcart experimental site auxiliary contact closure, the little bus of described control, described other handcarts experiment
Form closed-loop path between location aided rebroadcast contact, described second blocking device and the little bus of described second locking, have electric current to flow through institute
State the second blocking device.
Lock-in control loop described in the utility model, described second blocking device includes the second handcart latching electromagnet,
It is installed in the cabinet door of described voltage transformer cabinet (pt cabinet), and during described second handcart latching electromagnet power-off, described bus
Earth handcart is locked.
Lock-in control loop described in the utility model, the little bus of described second locking is arranged on described switch cubicle and described
The cabinet top of voltage transformer cabinet (pt cabinet).
Lock-in control loop described in the utility model, also includes bus electrification display, is installed on described mutual induction of voltage
On device cabinet (pt cabinet), and it is connected in series with described second blocking device.
Lock-in control loop described in the utility model, also includes the first power switch device and second source switch dress
Put；
Described first power switch device, for turning on or cutting off the little bus of described control to described busbar grounding handcart
Remove the power supply of location aided rebroadcast contact；
Described second source switching device, for turn on or cut off described control little bus to described second locking little mother
The power supply of line.
Technical solutions of the utility model, have the advantage that
This utility model provides a kind of lock-in control loop, by arranging the little bus of the first locking and passing through busbar grounding
Handcart removes the upper electric and lower electricity that location aided rebroadcast contact controls the little bus of the first locking, controls first in each switch cubicle with this
The power on/off of handcart locking device is it is ensured that the locking to the handcart in each switch cubicle for busbar grounding handcart during maintenance.Need not
Weight motor type relay provides the auxiliary contact after extension to each switch cubicle, simplifies wiring, it is to avoid heavy motor type relay is easily subject to
To the defect of the impact of multiple power loss, meet the requirement preventing electric misoperation, save a lot of control cables simultaneously again,
Improve safety and the economy in lock-in control loop.
Brief description
In order to be illustrated more clearly that this utility model specific embodiment or technical scheme of the prior art, below will be right
In specific embodiment or description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, below describe
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of an instantiation in lock-in control loop in this utility model embodiment.
Reference:
1- controls little bus；The little bus of 2- first locking；3- busbar grounding handcart removes location aided rebroadcast contact；4- is first-hand
Car blocking device；The little bus of 5- second locking；6- other handcart experimental site auxiliary contact；7- second blocking device；8- is powered
Display；9- first power switch device；10- second source switching device.
Specific embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described it is clear that described
Embodiment is a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of not making creative work, broadly falls into this practicality
Novel protected scope.
In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term
Directly ", the orientation of instruction such as " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, are only
For the ease of description this utility model with simplify description, rather than instruction or the hint device of indication or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly
Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary,
Can also be the connection of two element internals, can be wireless connection or wired connection.Common skill for this area
For art personnel, concrete meaning in this utility model for the above-mentioned term can be understood with concrete condition.
As long as additionally, involved technical characteristic in this utility model different embodiments disclosed below is each other
The conflict of not constituting just can be combined with each other.
This utility model embodiment provides a kind of lock-in control loop, as shown in Figure 1, comprising: control little bus 1, the
One locking little bus 2, at least two busbar grounding handcarts remove location aided rebroadcast contact 3 and multiple first handcart locking device 4.
Control little bus 1, its electrode line connects positive supply, and its negative line connects negative supply.
It is auxiliary that the little bus of first locking 2, its electrode line and negative line remove position by corresponding busbar grounding handcart respectively
Adjuvant grafting point 3 is connected with the electrode line controlling little bus 1 and negative line.
Busbar grounding handcart removes location aided rebroadcast contact 3, is arranged at the voltage transformer cabinet (pt cabinet) controlling on little bus 1
Interior, and the closure in busbar grounding handcart pull-out voltage transformer cabinet (pt cabinet).
First handcart locking device 4, is distributed in and controls other in addition to voltage transformer cabinet (pt cabinet) on little bus 1 to open
Close in cabinet, the electrode line of bus 2 little with the first locking and negative line are connected respectively at the two ends of each the first handcart locking device 4,
And the handcart of its place switch cubicle of locking when power is off.
Specifically, when normally running, mutual induction of voltage from the little bus 1 (Awaiting Overhaul section bus) of control for the busbar grounding handcart
Device cabinet (pt cabinet) pulls out, and now busbar grounding handcart removes location aided rebroadcast contact 3 is closure, controls the electrode line of little bus 1
The electrode line of bus 2 little with the first locking electrically connects, and controls the negative line of little bus 1 and the negative line of the little bus of the first locking 2
Electrical connection, electricity on the little bus of the first locking 2.Because the two ends of the first handcart locking device 4 and the respectively little bus 2 with the first locking
Electrode line and negative line connect, now have electric current to flow through each the first handcart locking device, each switch cubicle unlocking, respectively
Handcart in individual switch cubicle can enter operating position and normally use；During maintenance, busbar grounding handcart pushes voltage transformer, this
When busbar grounding handcart remove location aided rebroadcast contact 3 and disconnect, 2 times electricity of the little bus of the first locking are so that each switch cubicle is corresponding
First handcart locking device 4 also power-off, the handcart of its place switch cubicle of locking, handcart cannot be introduced into operating position and normally uses,
Guarantee to be not in the maloperation such as power transmission when earthed switch closes a floodgate.
Lock-in control loop in the present embodiment, by arranging the little bus of the first locking and being removed by busbar grounding handcart
Location aided rebroadcast contact controls the upper electric and lower electricity of the little bus of the first locking, controls the first handcart locking in each switch cubicle with this
The power on/off of device is it is ensured that the locking to the handcart in each switch cubicle for busbar grounding handcart during maintenance.Relay need not be moved again
Device provides the auxiliary contact after extension to each switch cubicle, simplifies wiring, it is to avoid heavy motor type relay is easily subject to multiple electricity
The defect of the impact of source dead electricity, meets the requirement preventing electric misoperation, saves a lot of control cables simultaneously again, improves and close
The safety in lock control loop and economy.
Preferably, the lock-in control loop in the present embodiment, removes location aided rebroadcast contact 3 including 4 busbar grounding handcarts,
And each two busbar grounding handcart is removed after location aided rebroadcast contact 3 is connected in parallel, then connect the positive pole controlling little bus 1 respectively
Line and the electrode line of the little bus of the first locking 2, and control the negative line of little bus 1 and the negative line of the little bus of the first locking 2.
Specifically, remove location aided rebroadcast contact by setting up the busbar grounding handcart of parallel connection, even if one of busbar grounding handcart moves
Open position auxiliary contact damages, and busbar grounding handcart connected in parallel removes location aided rebroadcast contact also can effective control first locking
The upper electric and lower electricity of little bus 2, improves the stability of busbar grounding handcart lock-in control.
Preferably, the lock-in control loop in the present embodiment, the first handcart locking device 4 includes the first handcart locking electromagnetism
Ferrum, is installed in the cabinet door of its corresponding switch cubicle, and during each first handcart latching electromagnet power-off, the handss of its corresponding switch cubicle
Lock is dead.Specifically, during 2 times electricity of the little bus of the first locking, the first handcart latching electromagnet power-off of each switch cubicle, right with it
The handcart of the switch cubicle answered is locked, and so that handcart cannot be introduced into, operating position is normal to be used it is ensured that busbar grounding handcart is to each
The electric blocking of individual switch cabinet handcart.
Preferably, the lock-in control loop in the present embodiment, its little bus of the first locking 2 is arranged on switch cubicle and voltage is mutual
The cabinet top of sensor cabinet (pt cabinet).It is easy to wiring.
Preferably, the lock-in control loop in the present embodiment, switch cubicle include incoming line cabinet, circuit outgoing line cabinet, ground connection become
At least one in line cabinet, capacitor outgoing line cabinet, segmentation lifting cabinet and segmentation cabinet.Maintenance safety, efficiently, convenient it is ensured that electricity
Net and the stable operation of grid equipment.
Preferably, the lock-in control loop in the present embodiment also includes: the little bus of the second locking 5, multiple other handcart are real
Test location aided rebroadcast contact 6 and the second blocking device 7.
Handcart in the corresponding switch cubicle of each other handcart experimental site auxiliary contact 6, and at its corresponding handcart
When operating position, this other handcart experimental site auxiliary contact 6 disconnects.
Second blocking device 7, is arranged in voltage transformer cabinet (pt cabinet), and locking busbar grounding handcart when power is off.
Other handcart experimental site auxiliary contacts 6 and the second blocking device 7 are all connected and are accessed the little bus of the second locking 5, and
During all of other handcart experimental site auxiliary contact 6 closure, control little bus 1, other handcart experimental site auxiliary contact 6,
Form closed-loop path between the second blocking device 7 and the little bus of the second locking 5, have electric current to flow through the second blocking device 7.
Specifically, when normally running, the handcart in switch cubicle is in operating position, its corresponding other handcart experimental site
Auxiliary contact 6 disconnects, because other handcart experimental site auxiliary contact 6 and the second blocking device 7 are series connection accesses the second locking
Little bus 5, once certain other handcart experimental site auxiliary contact 6 disconnects, control little bus 1, other handcart experimental site
Will be unable between auxiliary contact 6, the second blocking device 7 and the little bus of the second locking 5 form closed-loop path, namely the second blocking device
7 power-off, carry out electric blocking to busbar grounding handcart；During test maintenance, the handcart in switch cubicle departs from operating position, corresponding
Other handcart experimental site auxiliary contacts 6 close, as shown in figure 1, electric current is from the electrode line controlling little bus 1, through other handcarts
Experimental site auxiliary contact sw1, sw3, sw2, the second blocking device 7 return the negative line controlling little bus 1, are formed and close back
Road, now has electric current to flow through the second blocking device 7, busbar grounding handcart electrically unlocks, can be normally pushed to operating position makes mother
Line reliable ground.Guarantee to be not in that powered behaviour closes the maloperations such as earthed switch.
Lock-in control loop in the present embodiment, even if electrification display breaks down, still can pass through the first control line
1st, the little bus of the second locking 5, each switch cubicle corresponding other handcart experimental site auxiliary contact, the second blocking device 7 are formed
Series loop locking to busbar grounding handcart is provided, it is to avoid because electrification display damages the potential safety hazard brought.
Preferably, the lock-in control loop in the present embodiment, the second blocking device 7 includes the second handcart latching electromagnet,
It is installed in the cabinet door of voltage transformer cabinet (pt cabinet), and during the second handcart latching electromagnet power-off, busbar grounding handcart is locked,
Cannot be introduced into operating position it is ensured that being not in the maloperation that powered behaviour closes earthed switch.
Preferably, the lock-in control loop in the present embodiment, the little bus of the second locking 5 is arranged on switch cubicle and mutual induction of voltage
The cabinet top of device cabinet (pt cabinet).It is easy to wiring.
Preferably, the lock-in control loop in the present embodiment, also includes bus electrification display 8, is installed on mutual induction of voltage
On device cabinet (pt cabinet), and it is connected in series with the second blocking device 7.When the bus that switch cubicle is located is powered, the powered display of bus
Two contacts in device 8 are separated, can further ensure that the little bus 1 of control, other handcart experimental site auxiliary contact 6, the
Will be unable between two blocking devices 7 and the little bus of the second locking 5 form closed-loop path, make busbar grounding handcart be in locking, effectively
Powered behaviour is prevented to close the maloperations such as earthed switch.
Preferably, the lock-in control loop in the present embodiment, also includes the first power switch device 9 and second source switch
Device 10.
First power switch device 9, removes position for conducting or the little bus of cutting-off controlling 1 to busbar grounding handcart auxiliary
The power supply of adjuvant grafting point 3.
Second source switching device 10, the confession of the little bus 5 to the second locking for conducting or the little bus of cutting-off controlling 1
Electricity.
Specifically, as shown in figure 1, the first power switch device 9 includes switching qf1 and qf2, when switch qf1 and qf2 closure
When, control little bus 1 just can remove location aided rebroadcast contact yw1, yw2, yw3 and yw4 with busbar grounding handcart and electrically connect, work as switch
When qf1 and qf2 disconnects, even if busbar grounding handcart pull-out voltage transformer cabinet (pt cabinet), it is auxiliary that busbar grounding handcart removes position
Adjuvant grafting point yw1, yw2, yw3 and yw4 close, and the little bus of the first locking 2 also will not go up electricity, such that it is able to accessing according to demand or
Person cuts out busbar grounding handcart latch-up protection；Second source switching device 10 includes switching qf3 and qf4, when qf3 and qf4 disconnects
When, even if other handcart experimental site auxiliary contact sw1, sw2, sw3 and sw4 complete closure, also cannot control little bus 1, its
Form closed-loop path, naturally also not between its handcart experimental site auxiliary contact 6, the second blocking device 7 and the little bus of the second locking 5
Have electric current and flow through the second blocking device 7, only when switching qf3 and qf4 closure, closed-loop path could be formed, thus can
To access according to demand or to cut out switch cabinet handcart latch-up protection.First power switch device 9 and second source switch dress
Putting the switch in 10 can be for two air switches or two knife switches it is preferable that can also be double-pole single throw, can
To simplify wiring further.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Change among the protection domain created still in this utility model.
Claims (10)
1. a kind of lock-in control loop it is characterised in that include: control little bus (1), the little bus of the first locking (2), at least two
Individual busbar grounding handcart removes location aided rebroadcast contact (3) and multiple first handcart locking device (4)；
The little bus of described control (1), its electrode line connects positive supply, and its negative line connects negative supply；
The little bus (2) of described first locking, its electrode line and negative line are removed by corresponding described busbar grounding handcart respectively
Location aided rebroadcast contact (3) controls the electrode line of little bus (1) and negative line to be connected with described；
Described busbar grounding handcart removes location aided rebroadcast contact (3), is arranged at the described voltage transformer controlling on little bus (1)
In cabinet (pt cabinet), and the closure in busbar grounding handcart pull-out described voltage transformer cabinet (pt cabinet)；
Described first handcart locking device (4), is distributed in the little bus of described control (1) and above removes described voltage transformer cabinet (pt cabinet)
In other switch cubicles in addition, the two ends little bus with described first locking respectively of each described first handcart locking device (4)
(2) electrode line and negative line connect, and the handcart of its place switch cubicle of locking when power is off.
2. position is removed it is characterised in that including 4 busbar grounding handcarts in lock-in control loop according to claim 1
Auxiliary contact (3), and each two busbar grounding handcart is removed after location aided rebroadcast contact (3) is connected in parallel, then connect institute respectively
State the electrode line of the electrode line controlling little bus (1) and the little bus of described first locking (2), and the little bus of described control (1)
Negative line and the little bus of described first locking (2) negative line.
3. lock-in control loop according to claim 1 is it is characterised in that described first handcart locking device (4) includes
First handcart latching electromagnet, is installed in the cabinet door of its corresponding switch cubicle, and each described first handcart latching electromagnet breaks
When electric, the handcart of its corresponding switch cubicle is locked.
4. lock-in control loop according to claim 1 is it is characterised in that the little bus of described first locking (2) is arranged on
Described switch cubicle and the cabinet top of described voltage transformer cabinet (pt cabinet).
5. lock-in control loop according to claim 1 is it is characterised in that described switch cubicle includes incoming line cabinet, circuit goes out
Line cabinet, ground connection become at least one in outgoing line cabinet, capacitor outgoing line cabinet, segmentation lifting cabinet and segmentation cabinet.
6. the lock-in control loop according to any one of claim 1-5 is it is characterised in that also include: the little bus of the second locking
(5), multiple other handcart experimental site auxiliary contact (6) and the second blocking device (7)；
Each described other handcart experimental site auxiliary contact (6) corresponds to the handcart in a described switch cubicle, and it is corresponding
When handcart is in operating position, described other handcart experimental site auxiliary contact (6) disconnects；
Described second blocking device (7), is arranged in described voltage transformer cabinet (pt cabinet), and bus described in locking when power is off
Earth handcart；
Described other handcart experimental site auxiliary contact (6) and described second blocking device (7) are all connected to access and described second are closed
Lock little bus (5), and during all of other handcart experimental site auxiliary contact (6) closure, the little bus (1) of described control, described
Formed between other handcarts experimental site auxiliary contact (6), described second blocking device (7) and the little bus of described second locking (5)
Closed-loop path, has electric current to flow through described second blocking device (7).
7. lock-in control loop according to claim 6 is it is characterised in that described second blocking device (7) includes second
Handcart latching electromagnet, is installed in the cabinet door of described voltage transformer cabinet (pt cabinet), and described second handcart latching electromagnet
During power-off, described busbar grounding handcart is locked.
8. lock-in control loop according to claim 6 is it is characterised in that the little bus of described second locking (5) is arranged on
Described switch cubicle and the cabinet top of described voltage transformer cabinet (pt cabinet).
9. lock-in control loop according to claim 6, it is characterised in that also including bus electrification display (8), is installed
On described voltage transformer cabinet (pt cabinet), and it is connected in series with described second blocking device (7).
10. the lock-in control loop according to any one of claim 7-9 is it is characterised in that also include the first on and off switch
Device (9) and second source switching device (10)；
Described first power switch device (9), for turning on or cutting off the little bus of described control (1) to described busbar grounding handss
The power supply of location aided rebroadcast contact (3) removed by car；
Described second source switching device (10), for turning on or cutting off the little bus of described control (1) to described second locking
The power supply of little bus (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620561446.6U CN205911655U (en) | 2016-06-08 | 2016-06-08 | Lock -up control return circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620561446.6U CN205911655U (en) | 2016-06-08 | 2016-06-08 | Lock -up control return circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205911655U true CN205911655U (en) | 2017-01-25 |
Family
ID=57815162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620561446.6U Active CN205911655U (en) | 2016-06-08 | 2016-06-08 | Lock -up control return circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205911655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512106A (en) * | 2018-05-18 | 2018-09-07 | 河南森源电气股份有限公司 | A kind of bus equipment cabinet and its earth handcart exclusive circuit |
-
2016
- 2016-06-08 CN CN201620561446.6U patent/CN205911655U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512106A (en) * | 2018-05-18 | 2018-09-07 | 河南森源电气股份有限公司 | A kind of bus equipment cabinet and its earth handcart exclusive circuit |
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