CN207233645U - There is fast trip with being grounded the load-break switch of latch-up protection - Google Patents
There is fast trip with being grounded the load-break switch of latch-up protection Download PDFInfo
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- CN207233645U CN207233645U CN201721094495.4U CN201721094495U CN207233645U CN 207233645 U CN207233645 U CN 207233645U CN 201721094495 U CN201721094495 U CN 201721094495U CN 207233645 U CN207233645 U CN 207233645U
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Abstract
The utility model is to have the function of fast trip with being grounded the load-break switch of latch-up protection; it is single to solve load-break switch function in electric railway 27.5kV tractive power supply systems; trip protection slow motion, operator lock and grounding switch cannot latch-up protection each other the problem of.1st 3 insulating supporting（3、41、42）Sequentially coaxially it is installed on load-break switch pedestal（18）On, there is parallel grounding switch rotation axis on load-break switch pedestal（17）, rotation axis（45）, operator lock rotation axis（26）, energy-stored spring axis（21）Main switch fixed contact (2) connects inlet wire termination (4) and is fixed on the 1st insulating supporting (3), operator lock (1) is hinged by lock rotation axis (44) of operating with connecting copper bar (7) and the 1st fuse deck (10) by free bearing, and free bearing is fixed on the 2nd insulating supporting（41）On, the 1st fuse deck（10）With the 2nd fuse deck（43）Between fuse is installed（9）.
Description
Technical field
The utility model is related with electrified railway traction power supply system isolation on-load switch.
Background technology
The indoor isolation on-load switch of electric railway is suitable for exchange 50Hz, the electrification that rating operating voltage is 27.5kV
, can be in circuit normal condition in railway dragging electric power system（Including defined overload condition）Under close, carry and cut-off electricity
Flow and in defined abnormal loop condition（Such as short circuit）Under, electric current is carried before the deadline.Isolate on-load switch disconnected
Open position, can meet the insulation request to disconnecting switch defined.
Electric railway load-break switch product is all simple function mostly at present, and trip protection slow motion, operates
Lock cannot latch-up protection each other with grounding switch.
Utility model content：
The purpose of this utility model is to provide a kind of security performance and reliably, with fast trip protects and grounding switch locking
Protection, the load that there is fast trip and be grounded latch-up protection that compact-sized, maintenance safety is convenient, maintenance workload is few
Disconnecting switch.
The utility model is realized in：
1-3 insulating supportings 3,41,42 are sequentially coaxially installed on load-break switch pedestal 18, load-break switch base
There are parallel grounding switch rotation axis 17, rotation axis 45, operator lock rotation axis 26, energy-stored spring axis 21, lock stationary contact of operating on seat
First 2 connection inlet wire termination 4 is simultaneously fixed on the 1st insulating supporting 3, operator lock 1 by operate lock rotation axis 44 and connecting copper bar 7 and
1st fuse deck 10 is hinged by free bearing, and free bearing is fixed on the 2nd insulating supporting 41, and the 1st fuse deck the 10 and the 2nd is molten
Fuse 9 is installed between disconnected device deck 43, when any fuse 9 fuses, fuse thimble 11 that fuse carries
Can eject, hit the fuse tripping top plate 12 for being arranged at 9 termination of fuse, wire outlet end 16 and grounding switch static contact 15 with
And the 2nd fuse deck 43 be connected, wire outlet end 16 is fixed on the 3rd insulating supporting 42, the both ends point of operator lock insulated tension pole 8
It is not hinged with operator lock 1 and operator lock insulated tension pole connecting lever 25, insulated tension pole connecting lever 25 is connected with operator lock rotation axis 26, with master
The rotation of disconnecting link rotation axis produces the/feed motion that divides of push-and-pull operator lock 1, and grounding switch rotation is fixed in 14 one end of grounding switch
On axis 17, and as grounding switch rotation axis rotates, when grounding switch rotation axis rotates counterclockwise, it is fixed on grounding switch and turns
Grounding switch on moving axis can also rotate counterclockwise, until grounding switch 14 and grounding switch static contact 15 are completely attached to, it is complete
Into the feed motion of grounding switch 14,13 one end of fuse tripping insulation push rod is connected to fuse tripping top plate 12, the other end
It is connected with the rotation axis 45 of triggering tripping connecting lever 31,45 both ends of rotation axis are cut with scissors with tripping connecting lever 31, operator locking connecting lever 39 respectively
Even, when there is fuse blows, fuse tripping insulation push rod 13 can promote triggering tripping connecting lever 31, operator locking connecting lever 39 suitable
Hour hands rotate, and the rotation of triggering tripping connecting lever can drive trip lever 30, energy storage/tripping pulling-on piece 22, energy-storage crank arm 20, energy storage
Spring shaft 21 triggers fast trip protection act；Locking connecting lever 39 of operating produces empty rotation, operator lock rotation axis 26 respectively with
Operator lock insulated tension pole connecting lever 25, earthing knife-switch locking connecting lever 40, one end of operator lock energy storage/tripping connecting lever 24 are drawn in succession, and earthing knife-switch is closed
The other end and 36 one end of earthing knife-switch locking pull rod for locking connecting lever 40 are hinged, the other end and the earthing knife-switch locking card of earthing knife-switch locking pull rod 36
35 one end is hinged, and earthing knife-switch locking card 35 is hinged with pedestal 18, is engaged by clamping with earthing knife-switch connecting lever 37, earthing knife-switch connecting lever 37 and ground connection
17 stationary fit of disconnecting link rotation axis, is hinged with operator locking pull rod 38, and operator locking pull rod 38 is hinged with operator locking connecting lever 39, stores up
Can spring shaft 21 and energy-storage crank arm 20 be connected, energy-storage crank arm 20 is hinged with energy storage/tripping pulling-on piece 22, energy storage/tripping pulling-on piece 22 and
Energy storage/trip lever 23 is hinged, and energy storage/trip lever 23 is hinged with operator lock energy storage/tripping connecting lever 24, operator lock energy storage/jump
Lock connecting lever 24 is connected with operator lock rotation axis 26, and triggering tripping connecting lever 31 is hinged with trip lever 30, fixed on trip lever 30
There is locking shift fork to draw pin 33, locking shift fork 32 draws pin 33 to be hinged therewith by being inserted in locking shift fork, locking shift fork 32 and energy storage/jump
Lock pulling-on piece 22 is hinged.
Operating has blocking function each other between lock 1 and grounding switch 14, when lock 1 of operating is in "on" position, pass through ground
The complete locking earthing knife-switch connecting lever 37 of knife locking card 35, completes the operation to grounding switch 14 when lock 1 of operating is in "on" position
Locking；When grounding switch 14 is in "on" position, by the rotation of locking shift fork 32, locking energy storage/tripping pulling-on piece 22 and storage
Energy/trip lever 23 moves, and then the rotation of locking operator lock rotation axis 26 so that operator lock rotation axis 26 can not be completed to close a floodgate
Operation and the stored energy operation to energy-stored spring 19, complete the operation to lock 1 of operating when grounding switch 14 is in "on" position
Locking.
There are fuse deck 10 and fuse deck 43, to install fuse, and there is the quick trip protection of fuse
Function, when there are fuse blows, the fuse thimble 11 that fuse 9 carries will eject, and answer back to fuse tripping top plate 12,
So that fuse tripping insulation push rod 13 moves downward, rotating clockwise for rotation axis 45 is promoted, and then makes triggering tripping connecting lever
31 rotations, pull locking shift fork to draw pin 33 to be moved to the left so that energy of the energy storage in energy-stored spring 19 during closing operation
Measure quick release, trigger energy storage/trip lever 23, energy storage/tripping pulling-on piece 22 it is quick mobile so that operator lock 1 quickly with master
Switch fixed contact 2 separates, and completes the action process of the quick trip protection of fuse.
When occurring overcurrent, temperature, smog failure in equipment running process, tripping electromagnetic coil is encouraged by automatically controlled signal
27 so that tripping electromagnetic coil contact 28 can be ejected quickly, hit tripping electromagnetic coil top plate 29, because tripping electromagnetic coil top
Plate 29 is fixed on trip lever 30, and then rotates clockwise triggering tripping connecting lever 31, pull locking shift fork draw pin 33 to
Move left so that energy quick release of the energy storage in energy-stored spring 19 during closing operation, triggers energy storage/trip lever
23rd, energy storage/tripping pulling-on piece 22 is quick mobile so that operator lock 1 is quickly separated with main switch fixed contact 2, is completed electronic quick
The action process of trip protection.
Arc extinguishing box 5 and arc extinguishing bar 6 are provided between operator lock 1 and main switch fixed contact 2, to eliminate arcing.
The coaxial 1-3 insulating supportings 3,41,42 are a set of or arranged side by side two sets.
The beneficial effects of the utility model are as follows：
The outstanding feature of the utility model is, by the quick trip protection of fuse, electronic quick trip protection, operator lock with
Grounding switch latch-up protection relation, quick acting switching-off arc extinguishing each other, are reasonably merged in the integrated design of this load-break switch
In so that have fast trip be grounded latch-up protection functional burdening disconnecting switch use occasion is more extensive, security more
Height, structure are more reasonable and are easy to safeguard.
The latch designs each other operated between lock 1 and grounding switch 14, have fundamentally prevented the mistake behaviour of operating process appearance
Make the security risk that may be brought, ensure that the safe operation of equipment.
Brief description of the drawings
Fig. 1 is structure chart of the utility model as single-pole switch.
Fig. 2 is structure chart of the utility model as double-pole switch.
Fig. 3 is the quick trip protection action relationships view of the utility model.
Fig. 4 is the utility model operator lock and grounding switch block action relational view.
1-- operator locks；The main switch fixed contacts of 2--；3-- insulating supportings；4-- inlet wires termination；5-- arc extinguishing boxes.
6-- arc extinguishing bars；7-- connecting copper bars；8-- operator insulated tension poles；9-- fuses；10-- fuse decks.
11-- fuse thimbles；12-- fuses tripping top plate；13-- fuses tripping insulation push rod；14-- earthings
Lock；15-- grounding switch static contacts；16-- wire outlet ends；17-- grounding switch rotation axis；18-- load-break switch pedestals；
19-- energy-stored springs；20-- energy-storage crank arms；21-- energy-stored spring axis；22-- energy storage/tripping pulling-on piece；23-- energy storage/trip lever；
24-- operator locks energy storage/tripping connecting lever；25-- operator lock insulated tension pole connecting levers；26-- operator lock rotation axis；27-- tripping electromagnetism
Coil；28-- tripping electromagnetic coil contacts；29-- tripping electromagnetic coil top plates；30-- trip levers；31-- triggering tripping connecting levers；
32-- locking shift forks；33-- lockings shift fork draws pin；34-- load-break switch pedestal fixed feets；35-- earthing knife-switch locking cards；
36-- earthing knife-switch locking pull rods；
37-- earthing knife-switch connecting levers；38-- operator locking pull rods；39-- operator locking connecting levers；40-- earthing knife-switch locking connecting levers；
41-- insulating supportings；42-- insulating supportings；43-- fuse decks；44-- operator lock rotation axis；45-- rotation axis.
Embodiment
Embodiment 1：
Coaxial 1-3 insulating supportings 3,41,42 are a set of, as single-pole switch.
Externally fed line introduces this load-break switch by inlet wire termination 4, and operator is connected to by main switch fixed contact 2
Lock 1（In operator 1 "on" position of lock）, then through operate lock 1 and connecting copper bar 7 fuse deck 10 is connected to, connected by fuse 9
Fuse deck 43 is connected to, then exports to electrical equipment through wire outlet end 16 or uses electric line.
Fig. 1 is that the operator lock 1 of the utility model is in gate-dividing state, and grounding switch 14 is in "on" position, at this time, operator
Lock 1 separates with main switch fixed contact 2 and forms obvious fracture, completes sub-switching operation of the load-break switch to electric wiring, together
When to ensure safety, grounding switch 14 is in "on" position, makes the circuit good earth after power-off.
When needing closing operation, grounding switch rotation axis 17 is rotated clockwise first, makes grounding switch 14 and earthing
Lock static contact 15 separates, and at this time because of the rotation of earthing knife-switch connecting lever 37, promotes operator locking pull rod 38 to move right, turns operator locking
Arm 39 rotates counterclockwise vertically, drives triggering tripping connecting lever 31 to rotate counterclockwise, promotes trip lever 30 to move right so that
Locking shift fork 32 rotates counterclockwise, and the barring condition of release operator lock 1, operating lock rotation axis 26 at this time can be in operating mechanism
Drive under rotate clockwise, pull operator lock insulated tension pole 8, drive operator lock 1 to rotate, until operator lock 1 and lock of operating are quiet
Contact 2 closes completely, meanwhile, under the drive of operator lock rotation axis 26, operator lock energy storage/tripping connecting lever 24 promotes energy storage/jump
Lock pull rod 23, energy storage/tripping pulling-on piece 22 move right, and energy-storage crank arm 20 is rotated clockwise with energy-stored spring axis 21 for axis, are
Energy-stored spring 19 lays in fast trip energy, so far, completes the closing operation process of load-break switch.
While closing operation is completed, due to rotating clockwise for operator lock rotation axis 26, earthing knife-switch locking connecting lever is driven
40 rotations, promote earthing knife-switch locking pull rod 36 to be moved to the left, and then by the complete locking earthing knife-switch connecting lever 37 of earthing knife-switch locking card 35, complete
Operation locking of the load-break switch in "on" position to grounding switch 14, ensures, when lock 1 of operating is in "on" position, to connect
Ground disconnecting link 14 is in the lock state all the time, has the fault tolerance of operation.
When needing sub-switching operation, lock rotation axis 26 of operating under the drive of operating mechanism can rotate counterclockwise, lock of operating
Insulated tension pole connecting lever 25 promotes operator lock insulated tension pole 8 to move up, and then operator lock 1 is separated with main switch fixed contact 2, right
Operator lock 1 and issuable electric arc in the separation process of main switch fixed contact 2, pass through arc extinguishing box 5 and the common of arc extinguishing bar 6 makees
With and eliminate separating brake electric arc.Due to rotating counterclockwise for operator lock rotation axis 26, operator lock energy storage/tripping connecting lever 24 can be driven
Rotate, and then pull energy storage/trip lever 23, energy storage/tripping pulling-on piece 22 to be moved to the left so that the energy storage during closing operation
Energy quick release in energy-stored spring 19, produces counterclockwise quick rotation of the energy-storage crank arm 20 with energy-stored spring axis 21 for axis
Turn, due to the quick rotation of energy-storage crank arm 20, accelerate the movement of energy storage/trip lever 23, energy storage/tripping pulling-on piece 22, power-assisted
The separating brake rotary speed of operator lock rotation axis 26, greatly speeds up operator lock 1 and separates with main switch fixed contact 2, so designing can
To substantially reduce load-break switch issuable phenomenon of arc discharge of institute in separating brake, increase load-break switch uses the longevity
Life, reduces failure rate.So far, the sub-switching operation process of load-break switch is completed.
While sub-switching operation is completed, due to the rotation for lock rotation axis 26 of operating so that earthing knife-switch locking connecting lever 40 pulls
Earthing knife-switch locking pull rod 36 moves right, and then discharges locking of the earthing knife-switch locking card 35 to earthing knife-switch connecting lever 37, at this time, unlocking
Grounding switch 14 be only possible to carry out contact of earth operation.If closing operation is carried out to grounding switch 14, due to earthing
Lock rotation axis 17 rotates counterclockwise, and drives operator locking pull rod 38 to move left, makes operator locking connecting lever 39 clockwise vertically
Rotate, drive triggering tripping connecting lever 31 to rotate clockwise, while pull trip lever 30 to be moved to the left so that locking shift fork 32 is suitable
Hour hands rotate, and complete the locking to lock 1 of operating, and at this time, in the case where grounding switch 14 is in "on" position, operator lock 1 will be unable to
Stored energy operation into closing operation and to energy-stored spring 19, realizes the locking each other between operator lock 1 and grounding switch 14.
The embodiment of quick trip protection
The utility model has the function of the quick trip protection of fuse, electronic quick trip protection.
The quick trip protection of fuse, when occurring fuse blows failure in equipment running process, fuse thimble 11
It will eject, and then push fuse tripping top plate 12 and move right, since fuse tripping top plate 12 is connected to fuse tripping
Insulate on push rod 13, therefore moving down for fuse tripping insulation push rod 13 can be produced, drive the axis of triggering tripping connecting lever 31
Rotate clockwise, and then pull trip lever 30 to be moved to the left, promote locking shift fork to draw pin 33 to move so that in closing operation mistake
Energy quick release of the energy storage in energy-stored spring 19 in journey, it is the counterclockwise of axis to produce energy-storage crank arm 20 with energy-stored spring axis 21
Quick rotation, due to the quick rotation of energy-storage crank arm 20, promotes the quick shifting of energy storage/trip lever 23, energy storage/tripping pulling-on piece 22
It is dynamic so that operator lock 1 is quickly separated with main switch fixed contact 2, completes the action process of the quick trip protection of fuse.
Electronic quick trip protection, when occurring overcurrent, temperature, smog failure in equipment running process, by detection device
Automatically controlled signal is sent, the automatically controlled signal is through cable connection in the electromagnetism that on the tripping electromagnetic coil 27 of this load-break switch, trips
After by automatically controlled signal current excitation, tripping electromagnetic coil contact 28 can be ejected quickly coil 27, hit tripping electromagnetic coil top
Plate 29, since tripping electromagnetic coil top plate 29 is installed on trip lever 30, tripping electromagnetic coil contact 28 hits tripping
The effect of electromagnetic coil top plate 29 causes trip lever 30 to be moved to the left, and then promotes locking shift fork to draw pin 33 to move so that
Energy quick release of the energy storage in energy-stored spring 19 during closing operation, produce energy-storage crank arm 20 is with energy-stored spring axis 21
The quick rotation counterclockwise of axis, due to the quick rotation of energy-storage crank arm 20, promotes energy storage/trip lever 23, energy storage/tripping pulling-on piece
22 quick movement so that operator lock 1 is quickly separated with main switch fixed contact 2, completes the action of electronic quick trip protection
Journey.
Embodiment 2：
Coaxial 1-3 insulating supportings 3,41,42 are arranged side by side two sets, as double-pole switch, other structures and embodiment 1
It is identical.
Claims (6)
1. there is fast trip with being grounded the load-break switch of latch-up protection, it is characterised in that 1-3 insulating supportings（3、
41、42）Sequentially coaxially it is installed on load-break switch pedestal（18）On, there is parallel grounding switch on load-break switch pedestal
Rotation axis（17）, rotation axis（45）, operator lock rotation axis（26）, energy-stored spring axis（21）, main switch fixed contact (2) connection inlet wire
Termination (4) is simultaneously fixed on the 1st insulating supporting (3), lock of operating（1）By operate lock rotation axis (44) and connecting copper bar (7) and
1st fuse deck (10) is hinged by free bearing, and free bearing is fixed on the 2nd insulating supporting（41）On, the 1st fuse deck（10）With
2nd fuse deck（43）Between fuse is installed（9）, in any fuse（9）When fusing, fuse（9）Carry
Fuse thimble（11）It can eject, shock is arranged at fuse（9）The fuse tripping top plate of termination（12）, wire outlet end
（16）With grounding switch static contact（15）And the 2nd fuse deck（43）It is connected, wire outlet end（16）It is fixed on the 3rd insulation branch
Support（42）On, lock insulated tension pole of operating（8）Both ends respectively with operate lock（1）With operator lock insulated tension pole connecting lever（25）It is hinged,
Insulated tension pole connecting lever（25）With lock rotation axis of operating（26）It is connected, push-and-pull operator lock 1 is produced with the rotation of operator lock rotation axis
Point/feed motion, grounding switch rotation axis is fixed in grounding switch (14) one end（17）On, and as grounding switch rotation axis is revolved
Turn, when grounding switch rotation axis rotates counterclockwise, the grounding switch being fixed in grounding switch rotation axis can also turn counterclockwise
It is dynamic, until grounding switch (14) is completely attached to grounding switch static contact (15), the feed motion of grounding switch (14) is completed, is melted
Disconnected device tripping insulation push rod (13) one end is connected to fuse tripping top plate (12), and the other end turns with triggering tripping connecting lever (31)
Moving axis (45) be connected, rotation axis both ends respectively with tripping connecting lever (31), operator locking connecting lever（39）It is hinged, works as fuse blows
When, fuse tripping insulation push rod（13）Triggering tripping connecting lever, operator locking connecting lever can be promoted to rotate clockwise, triggering tripping is turned
The rotation of arm can drive trip lever (30), energy storage/tripping pulling-on piece (22), energy-storage crank arm（20）, energy-stored spring axis（21）Triggering
Fast trip protection act；Operator locking connecting lever（39）Simply empty rotation, lock rotation axis of operating（26）Insulate respectively with operator lock
Pull rod connecting lever（25）, earthing knife-switch locking connecting lever（40）, operator lock energy storage/tripping connecting lever（24）One end connection, earthing knife-switch locking connecting lever
（40）The other end and earthing knife-switch locking pull rod（36）One end is hinged, the other end and the earthing knife-switch locking card of earthing knife-switch locking pull rod（35）
One end be hinged, earthing knife-switch locking card and pedestal（18）Hinge and earthing knife-switch connecting lever（37）It is engaged by clamping, earthing knife-switch connecting lever and earthing
Lock rotation axis（17）Stationary fit, with locking pull rod of operating（38）It is hinged, operator locking pull rod and operator locking connecting lever（39）It is hinged,
Energy-stored spring axis（21）With energy-storage crank arm（20）It is connected, energy-storage crank arm is hinged with energy storage/tripping pulling-on piece (22), and energy storage/tripping is drawn
Piece is hinged with energy storage/trip lever (23), and energy storage/trip lever is hinged with operator lock energy storage/tripping connecting lever (24), operator lock storage
Energy/tripping connecting lever is connected with operator lock rotation axis (26), and triggering tripping connecting lever (31) is hinged with trip lever (30), trip lever
On be fixed with locking shift fork draw pin (33), locking shift fork (32) by be inserted in locking shift fork draw pin (33) be hinged therewith, locking dial
(32) are pitched to be hinged with energy storage/trip lever (23).
2. having the function of fast trip with being grounded the load-break switch of latch-up protection according to claim 1, it is special
Sign is when operator lock（1）During in "on" position, pass through earthing knife-switch locking card（35）Complete locking earthing knife-switch connecting lever（37）, complete
When lock of operating is in "on" position to grounding switch（14）Operation locking；When grounding switch is in "on" position, pass through
Locking shift fork（32）Rotation, lock energy storage/tripping pulling-on piece（22）With energy storage/trip lever（23）Movement, and then locking is operated
Lock rotation axis（26）Rotation so that operator lock rotation axis can not complete closing operation and to energy-stored spring（19）Energy storage behaviour
Make, complete in grounding switch（14）To lock of operating during in "on" position（1）Operation locking.
3. there is fast trip with being grounded the load-break switch of latch-up protection according to claim 1 or 2,
It is characterized in that when there are fuse blows, fuse（9）The fuse thimble carried（11）It will eject, and answer back to fuse jump
Lock top plate（12）So that fuse tripping insulation push rod（13）Move downward, promote rotation axis（45）Rotate clockwise, and then make
Triggering tripping connecting lever（31）Rotation, pulls locking shift fork to draw pin（33）It is moved to the left so that energy storage exists during closing operation
Energy-stored spring（19）In energy quick release, trigger energy storage/trip lever（23）, energy storage/tripping pulling-on piece（22）It is quick mobile,
So that operator lock（1）Quickly with main switch fixed contact（2）Separation, completes the action process of the quick trip protection of fuse.
4. there is fast trip with being grounded the load-break switch of latch-up protection according to claim 1 or 2,
It is characterized in that when occurring overcurrent, temperature, smog failure in equipment running process, tripping electromagnetic coil is encouraged by automatically controlled signal
（27）So that tripping electromagnetic coil contact（28）It can quickly eject, hit tripping electromagnetic coil top plate（29）, trip electromagnetic coil
Top plate is fixed on trip lever（30）On, and then make triggering tripping connecting lever（31）Rotate clockwise, pull locking shift fork to draw pin
（33）It is moved to the left so that energy storage is in energy-stored spring during closing operation（19）In energy quick release, trigger energy storage/
Trip lever（23）, energy storage/tripping pulling-on piece（22）It is quick mobile so that operator lock is quickly separated with main switch fixed contact, complete
Into the action process of electronic quick trip protection.
5. there is fast trip with being grounded the load-break switch of latch-up protection according to claim 1 or 2,
It is characterized in that it is provided with arc extinguishing box between operator lock and main switch fixed contact（5）With arc extinguishing bar（6）, to eliminate arcing.
6. there is fast trip with being grounded the load-break switch of latch-up protection according to claim 1 or 2,
It is characterized in that the 1-3rd coaxial insulating supporting（3、41、42）For a set of or arranged side by side two sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721094495.4U CN207233645U (en) | 2017-08-30 | 2017-08-30 | There is fast trip with being grounded the load-break switch of latch-up protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721094495.4U CN207233645U (en) | 2017-08-30 | 2017-08-30 | There is fast trip with being grounded the load-break switch of latch-up protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207233645U true CN207233645U (en) | 2018-04-13 |
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ID=61859636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721094495.4U Active CN207233645U (en) | 2017-08-30 | 2017-08-30 | There is fast trip with being grounded the load-break switch of latch-up protection |
Country Status (1)
| Country | Link |
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| CN (1) | CN207233645U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903619A (en) * | 2021-10-29 | 2022-01-07 | 广东电网有限责任公司 | Isolating switch device |
| CN117038374A (en) * | 2023-09-28 | 2023-11-10 | 广东米勒电气有限公司 | Double-station grounding switch with function of rapidly closing short-circuit fault current |
-
2017
- 2017-08-30 CN CN201721094495.4U patent/CN207233645U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903619A (en) * | 2021-10-29 | 2022-01-07 | 广东电网有限责任公司 | Isolating switch device |
| CN117038374A (en) * | 2023-09-28 | 2023-11-10 | 广东米勒电气有限公司 | Double-station grounding switch with function of rapidly closing short-circuit fault current |
| CN117038374B (en) * | 2023-09-28 | 2023-12-08 | 广东米勒电气有限公司 | Double-station grounding switch with function of rapidly closing short-circuit fault current |
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