CN207165485U - A kind of small size vacuum contactor for ring main unit - Google Patents
A kind of small size vacuum contactor for ring main unit Download PDFInfo
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- CN207165485U CN207165485U CN201721129484.5U CN201721129484U CN207165485U CN 207165485 U CN207165485 U CN 207165485U CN 201721129484 U CN201721129484 U CN 201721129484U CN 207165485 U CN207165485 U CN 207165485U
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- main unit
- ring main
- pole
- small size
- plate
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Abstract
The utility model proposes a kind of small size vacuum contactor for ring main unit, it is related to electrical equipment technical field, including the pole being fixed on ring main unit, and it is arranged on the fuse on pole, the pole is connected on ring main unit by upper mechanism plate, small size vacuum contactor also includes the upper outlet copper bar for being arranged on pole upper end, the fuse connects dropout pressing plate, dropout pressing plate connecting lever one end, the connecting lever other end is arranged on the cam on upper mechanism plate by connecting plate connection, vacuum interrupter is provided with the pole, when the ring main unit occurs short-circuit, vacuum interrupter disconnects, when short circuit current is more than vacuum interrupter disconnection threshold value, fuse disconnects, open short-circuit protection.Technological merit with the effective safe and reliable operation for ensureing user load equipment.
Description
Technical field
The utility model belongs to electrical equipment technical field, more particularly to a kind of small size vacuum for ring main unit contacts
Device.
Background technology
The high capacity motor (up to 10kV) that power plant, chemical industry, colliery etc. are used, motor start and stop are non-in the process of running
Often frequently, its life-span only has 10,000 times or so for the breaker in electric system, and the life-span of contactor has 300,000 times or so,
The frequent starting of motor, transformer, capacitor frequent switching when, vacuum circuit breaker can cut-off short circuit current, and can not be real
Existing frequent operation.
Existing vacuum contactor can only coordinate KYN28A-12 type intermediate switchgear cabinets, can not the use of physical loop cabinet
(vacuum contactor used is handcart-type in KYN28A-12 type switch cubicles, and overall width is 470mm or so, and ring main unit
Basic size width is in 375mm, and 470mm appearance and size at all do not enter by dress), user sometimes due to switchgear house area is small can not
Bulky switch cabinet is installed.So result in user equipment can not waste in normal safe operation, or running substantial amounts of manpower,
Material resources.
Utility model content
The purpose of this utility model is solve the drawbacks of prior art, there is provided a kind of small size vacuum for ring main unit connects
Tentaculum, have it is simple in construction, can frequent operation, small volume, long lifespan, be applicable to the ring main unit of air insulation, it is effective to protect
Demonstrate,prove the technological merit of the safe and reliable operation of user load equipment.
The utility model proposes a kind of small size vacuum contactor for ring main unit, including is fixed on ring main unit
Pole, and the fuse being arranged on pole, the pole is connected on ring main unit by upper mechanism plate, small
Type vacuum contactor also includes the upper outlet copper bar for being arranged on pole upper end, and the fuse connects dropout pressing plate, threaded off
Pressing plate connecting lever one end, the connecting lever other end are arranged on the cam on upper mechanism plate, the pole by connecting plate connection
Interior to be provided with vacuum interrupter, when the ring main unit occurs short-circuit, vacuum interrupter disconnects, and short-circuit current value is more than vacuum interrupter
When disconnecting threshold value, fuse disconnects, and opens short-circuit protection.
Further scheme, small size vacuum contactor also include being arranged on divide-shut brake coil on mechanism plate, auxiliary switch,
Driver plate and terminal block.
Further scheme, the auxiliary switch are arranged on mechanism plate by auxiliary switch pressing plate.
Further scheme, the divide-shut brake coil are connected by driver plate with the vacuum interrupter.
Further scheme, the vacuum interrupter include glass-ceramic cover, shading ring, contact.
Further scheme, the divide-shut brake coil also include divide-shut brake coil button, and the vacuum interrupter is additionally provided with
Control loop, divide-shut brake coil motion is made by divide-shut brake coil button after control loop is powered.The beneficial effect body of this programme
Now：
1st, it is described when short trouble occurs, first cut-off by vacuum interrupter, if short circuit current is more than vacuum contactor
The break performance of arc-chutes, then it is switched to fuse and goes to cut-off short circuit current, with the safety of proof load equipment.The vacuum contact
Device is simple in construction, can frequent operation, small volume, price are low, long lifespan, are applicable to the ring main unit of air insulation, are easily installed
And maintenance, it can effectively ensure the safe and reliable operation of user load equipment.
2nd, this programme small size vacuum contactor construction is simple, band blocking function, and when short trouble occurs, short circuit current is small
Short circuit current is first cut-off by contactor when 4.5kA, if contactor can not cut-off when short circuit current is more than 4.5kA, transfers to melt
Disconnected device is cut-off, and after fuse fuse failure, dropout pressing plate is withstood in spring actuators ejection, dropout pressing plate drive connecting lever, connecting plate,
Cam drive, the microswitch below cam is depressed, so as to disconnect vacuum contactor arc-chutes.
3rd, this programme small size vacuum contactor small volume, be easily installed and dismantle；Try out among ring main unit.
Brief description of the drawings
Fig. 1 is the utility model small size vacuum contactor construction schematic diagram.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and specifically
Embodiment, the utility model is further elaborated.It should be appreciated that embodiment described herein is only used
To explain the utility model, it is not used to limit the utility model.
As shown in figure 1, the utility model proposes a kind of small size vacuum contactor for ring main unit, including it is fixed on
Pole 1 on ring main unit (not marked in figure), and the fuse 2 being arranged on pole 1, the pole 1 are logical
Guo Shang mechanisms plate 3 is connected on ring main unit, and small size vacuum contactor also includes the upper outlet copper bar for being arranged on the upper end of pole 1
4, the fuse 2 connects dropout pressing plate 5, and the one end of 5 connecting lever of dropout pressing plate 6, the other end of connecting lever 6 is connected by connecting plate 7
The cam 8 being arranged on mechanism plate 3, the pole 1 is interior to be provided with vacuum interrupter 9, when the ring main unit occurs short-circuit,
Vacuum interrupter 9 disconnects, and when short-circuit current value is more than vacuum interrupter more than the disconnection threshold value of vacuum interrupter 9, fuse 2 is disconnected
Open, open short-circuit protection.Small size vacuum contactor also include being arranged on divide-shut brake coil 10 on mechanism plate 3, auxiliary switch 11,
Driver plate 13 and terminal block 14.The auxiliary switch 11 is arranged on mechanism plate 3 by auxiliary switch pressing plate 12.The divide-shut brake
Coil 10 is connected by driver plate 13 with the vacuum interrupter 9.The vacuum interrupter include glass-ceramic cover, shading ring,
Contact (does not mark) in figure.The divide-shut brake coil 10 also includes divide-shut brake coil button, and the vacuum interrupter 9 is additionally provided with control
Loop processed, divide-shut brake coil motion is made by the button of divide-shut brake coil 10 after control loop is powered.
Again as shown in figure 1, when short trouble occurs, first cut-off by the vacuum interrupter 9 in pole 1, such as
Fruit short circuit current is more than vacuum interrupter 9, then is switched to fuse 2 and goes to cut-off short circuit current, the fusing spring actuators of fuse 2
Ejection is withstood dropout pressing plate 5 and moved downward, and dropout pressing plate 5 drives connecting plate 7, cam 8 to act, with the peace of proof load equipment
Entirely.Vacuum interrupter 9 pours parcel by epoxy resin, specifically includes glass-ceramic cover, shading ring, moving contact, static contact, control
Divide-shut brake coil 10 is acted by divide-shut brake button after loop is powered, acts driver plate 13 under magnetic effect, so as to pull open
Or the contact action in promotion vacuum interrupter 9, so as to realize major loop disconnection or conducting.Short-circuit current value is more than vacuum extinction
When room 9 disconnects threshold value, fuse 2 disconnects, and it is simple in construction to open the short-circuit protection vacuum contactor, small volume, be easily installed and
Maintenance, can effectively ensure the safe and reliable operation of user load equipment.
It should be appreciated that although the present specification is described in terms of embodiments, not each embodiment only includes one
Individual independent technical scheme, this narrating mode of specification is only that those skilled in the art will should say for clarity
Bright book is as an entirety, and the technical solutions in the various embodiments may also be suitably combined, and forming those skilled in the art can be with
The other embodiment of understanding.
Claims (6)
1. a kind of small size vacuum contactor for ring main unit, including the pole being fixed on ring main unit, and be arranged on solid
Fuse on sealed pole, the pole are connected on ring main unit by mechanism plate, it is characterised in that：Also include being arranged on
The upper outlet copper bar of pole upper end, the fuse connection dropout pressing plate, dropout pressing plate connecting lever one end, connecting lever are another
End is arranged on the cam on mechanism plate by connecting plate connection, and vacuum interrupter, the ring main unit are provided with the pole
When generation is short-circuit, vacuum interrupter disconnects, and when short-circuit current value is more than vacuum interrupter disconnection threshold value, fuse disconnects, and opens
Short-circuit protection.
A kind of 2. small size vacuum contactor for ring main unit as claimed in claim 1, it is characterised in that：Also include being arranged on
Divide-shut brake coil, auxiliary switch, driver plate and terminal block on mechanism plate.
A kind of 3. small size vacuum contactor for ring main unit as claimed in claim 2, it is characterised in that：The auxiliary switch
It is arranged on by auxiliary switch pressing plate on mechanism plate.
A kind of 4. small size vacuum contactor for ring main unit as claimed in claim 2, it is characterised in that：The division brake cable
Circle is connected by driver plate with the vacuum interrupter.
A kind of 5. small size vacuum contactor for ring main unit as claimed in claim 4, it is characterised in that：The vacuum extinction
Room includes glass-ceramic cover, shading ring, contact.
A kind of 6. small size vacuum contactor for ring main unit as claimed in claim 5, it is characterised in that：The division brake cable
Circle also includes divide-shut brake coil button, and the vacuum interrupter is additionally provided with control loop, passes through divide-shut brake after control loop is powered
Coil button makes divide-shut brake coil motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721129484.5U CN207165485U (en) | 2017-09-05 | 2017-09-05 | A kind of small size vacuum contactor for ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721129484.5U CN207165485U (en) | 2017-09-05 | 2017-09-05 | A kind of small size vacuum contactor for ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207165485U true CN207165485U (en) | 2018-03-30 |
Family
ID=61719724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721129484.5U Active CN207165485U (en) | 2017-09-05 | 2017-09-05 | A kind of small size vacuum contactor for ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207165485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516616A (en) * | 2017-09-05 | 2017-12-26 | 西安威科瑞电气有限公司 | A kind of small size vacuum contactor for ring main unit |
-
2017
- 2017-09-05 CN CN201721129484.5U patent/CN207165485U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516616A (en) * | 2017-09-05 | 2017-12-26 | 西安威科瑞电气有限公司 | A kind of small size vacuum contactor for ring main unit |
| CN107516616B (en) * | 2017-09-05 | 2021-05-25 | 西安威科瑞电气有限公司 | Small-sized vacuum contactor for ring main unit |
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