CN203445054U - Single-fracture vacuum single-busbar combination electric appliance - Google Patents
Single-fracture vacuum single-busbar combination electric appliance Download PDFInfo
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- CN203445054U CN203445054U CN201320536161.3U CN201320536161U CN203445054U CN 203445054 U CN203445054 U CN 203445054U CN 201320536161 U CN201320536161 U CN 201320536161U CN 203445054 U CN203445054 U CN 203445054U
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Abstract
The utility model discloses a single-fracture vacuum single-busbar combination electric appliance for overcoming the problems of complex structure, large size, poor heat dissipation, inconvenient transportation and great manufacturing difficulty in the prior art. The single-fracture vacuum single-busbar combination electric appliance is characterized in that the segment tank body of a sectional type steel tank is welded thereon with a left insulation separator plate and a right insulation separator plate so as to form a left three-station switch chamber, a vacuum chamber and a right three-station switch chamber, and the left three-station switch chamber, the vacuum chamber and the right three-station switch chamber are at the same horizontal line. The advantages are as follows: the vacuum chamber is used as an arc extinguishing chamber, and a moving conductor passes through a conductive sleeve to form a single fracture with a static conductor so that an arc extinguishing chamber porcelain sleeve is omitted; the left insulation separator plate, the right insulation separator plate and the vacuum chamber can insulate and fix the static conductor; the moving conductor is vertically installed right below the static conductor so as to ensure the coaxiality of the contact of the moving conductor and the contact of the static conductor; and the single-fracture vacuum single-busbar combination electric appliance also has the advantages of simple structure, small size, good heat dissipation, facilitated transportation, lowered manufacturing cost and higher safety.
Description
Technical field
The utility model belongs to high voltage electrical apparatus technical field, particularly a kind of single break vacuum single busbar connection combined electrical apparatus.
Background technology
The single break vacuum single busbar connection combined electrical apparatus of prior art adopts horizontal vacuum circuit breaker, because isolating/grounding switch is installed at the tank body top at horizontal vacuum circuit breaker, and at the top of isolating/grounding switch mounting sleeve, complex structure, volume is large, particularly between conduit connection end and installing rack, distance is larger, make the height of single break vacuum single busbar connection combined electrical apparatus higher, be unfavorable for transportation, and horizontal vacuum circuit breaker is that moving conductive body and quiet electric conductor are installed in insulator, moving conductive body contact is partly affected by gravity easily downward-sloping, be difficult to guarantee the axiality of moving conductive body contact and quiet electric conductor contact, the fairlead of moving conductive body is produced to larger frictional force, therefore the surface roughness of fairlead and resistance to wear and length are had higher requirements, manufacture difficulty is larger, useful life is shorter, poor radiation, in addition, sliding conduction body in isolating/grounding switch has plenty of inclination, concentricity requirement to sliding conduction body and isolate conductive body and grounded conductive body is higher, manufacture difficulty is larger, have plenty of vertically, but need to realize and moving up and down by crank, complex structure, and make the volume of tank body larger, cost is higher.
Summary of the invention
Problem to be solved in the utility model is, overcomes deficiency and defect that prior art exists, provides a kind of simple in structure, volume is little, thermal diffusivity is good, and cost is lower, can reduce single break vacuum single busbar connection combined electrical apparatus height to be conducive to a kind of single break vacuum single busbar connection combined electrical apparatus of transportation.
The technical solution adopted in the utility model comprises segmented cylinder of steel, described segmented cylinder of steel is by first paragraph tank body, second segment tank body and the 3rd section of tank body form, between first paragraph tank body and second segment tank body, weld left insulating barrier, between second segment tank body and the 3rd section of tank body, weld right insulating barrier, first paragraph tank body and left insulating barrier form left three-station chamber, second segment tank body and left insulating barrier and right insulating barrier form vacuum chamber, right insulating barrier and the 3rd section of tank body form right three-station chamber, described left three-station chamber, vacuum chamber and right three-station chamber are on same level line, quiet electric conductor is installed in vacuum chamber, in quiet electric conductor centre position, be welded with the vacuum chamber insulating barrier of insulation and fixation, vacuum chamber insulating barrier is welded on second segment tank body simultaneously, at quiet electric conductor contact place welding radome, opening part in vacuum chamber bottom is welded with insulating sleeve, described insulating sleeve axis is vertical with segmented cylinder of steel axis, operation insulator is installed in insulating sleeve, operation insulator top is connected with moving conductive body, on operation insulator, be set with and be welded with vacuum chamber bellows, the other end of vacuum chamber bellows is welded on second segment tank body, in insulating sleeve, top is provided with conductive sleeve, groove on conductive sleeve is provided with Basel's spring, the axis of described moving conductive body is also mutually vertical with the axis of segmented cylinder of steel, by moving conductive body, through conductive sleeve and quiet electric conductor, form single break.
At described left three-station indoor location, there are left grounded conductive body and left isolate conductive body, on left grounded conductive body, be set with and be welded with left ground connection bellows, the other end of left ground connection bellows is welded on first paragraph tank body, in the lower end of left isolate conductive body, left insulated tension pole is installed, on left insulated tension pole, be set with and be welded with left isolation bellows, the other end of left isolation bellows is welded on first paragraph tank body, on top, left three-station chamber, be welded with left support insulator, left support insulator connects to form left interstar connection room by left tank and left sleeve pipe, at left sleeve pipe, be set with left current transformer outward, in the middle of left support insulator, there is left electric conductor, the upper end of left electric conductor is bolted to connection with the left electric conductor that is connected, the left sleeve pipe electric conductor being integrated with left sleeve pipe in left sleeve pipe is pegged graft with the left electric conductor that is connected, between left electric conductor and left insulating barrier, weld left insulation support plate, between left isolate conductive body and quiet electric conductor, welding a left side is flexible coupling and realizes electrical connection.
At described right three-station indoor location, there are right grounded conductive body and right isolate conductive body, on right grounded conductive body, be set with and weld right ground connection bellows, the other end of right ground connection bellows is welded on the 3rd section of tank body, in the lower end of right isolate conductive body, right insulated tension pole is installed, on right insulated tension pole, be set with and weld right isolation bellows, the other end of right isolation bellows is welded on the 3rd section of tank body, on top, right three-station chamber, be welded with right support insulator, right support insulator connects to form right interstar connection room by right tank and right sleeve pipe, the right current transformer of suit outside right sleeve pipe, in right support insulator, there is right electric conductor, the upper end of right electric conductor is bolted to connection with the right electric conductor that is connected, the right sleeve pipe electric conductor being integrated with right sleeve pipe in right sleeve pipe is pegged graft with the right electric conductor that is connected, between right electric conductor and right insulating barrier, weld right insulation support plate, in the middle of right insulating barrier, there is bending electric conductor, bending electric conductor left end is connected with conductive sleeve, bending electric conductor right-hand member is flexible coupling and is connected with the right side, by the right side, be flexible coupling and realize the electrical connection of conductive sleeve and right isolate conductive body.
Described vacuum chamber, left three-station chamber and right three-station chamber are separate, and during use, vacuum chamber, left three-station chamber and right three-station chamber keep vacuum state.
In described left interstar connection room, fill clean dried compressed air or other gas as dielectric or keep vacuum state.
In described right interstar connection room, fill clean dried compressed air or other gas as dielectric or keep vacuum state.
If while filling clean dried compressed air or other gas as dielectric in left interstar connection room or right interstar connection room, need on left tank or right tank, rupture pressure disc be installed.
Compared with prior art, the beneficial effects of the utility model are:
(1) vacuum chamber that the utility model is comprised of second segment tank body, left insulating barrier and right insulating barrier is as arc control device, by moving conductive body, through conductive sleeve and quiet electric conductor, form single break, omitted original interrupting porcelain insulator, with left insulating barrier, right insulating barrier and vacuum chamber insulating barrier, quiet electric conductor has been played to insulation and fixation, so simple in structure, volume is little, and thermal diffusivity is good, and cost is lower; Owing to directly moving conductive body being vertically mounted in vacuum chamber, can guarantee the axiality of moving conductive body contact and quiet electric conductor contact;
(2) the utility model, because left three-station chamber, vacuum chamber and right three-station chamber are on same level line, has reduced the height of single break vacuum single busbar connection combined electrical apparatus, is conducive to transportation;
(3) the utility model is owing to welding left insulating barrier between first paragraph tank body and second segment tank body, between second segment tank body and the 3rd section of tank body, weld right insulating barrier, rather than in a tank body, weld 2 insulating barriers, left three-station chamber, vacuum chamber and right three-station cell structure that segmented cylinder of steel and left insulating barrier and right insulating barrier are formed are more stable, and fail safe is higher.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model,
Fig. 2 is the left view of Fig. 1,
Fig. 3 is the A-A cutaway view of Fig. 2,
Fig. 4 is the G portion enlarged drawing of Fig. 3.
In figure:
1. vacuum chamber,
1-1. moving conductive body, the quiet electric conductor of 1-2.,
1-3. conductive sleeve, 1-4. operates insulator,
1-5. vacuum chamber bellows, 1-6. radome,
1-7. Basel spring, 1-8. vacuum chamber insulating barrier,
1-9. insulating sleeve, 1-10. bends electric conductor,
2. left three-station chamber,
The left grounded conductive body of 2-1., the left ground connection bellows of 2-2.,
The left isolate conductive body of 2-3., the left isolation bellows of 2-4.,
The left insulated tension pole of 2-5., the left insulation support plate of 2-6.,
A 2-7. left side is flexible coupling, the left insulating barrier of 2-8.,
3. right three-station chamber,
The right grounded conductive body of 3-1., the right ground connection bellows of 3-2.,
The right isolate conductive body of 3-3., the right isolation bellows of 3-4.,
The right insulated tension pole of 3-5., the right insulation support plate of 3-6.,
The 3-7. right side is flexible coupling, the right insulating barrier of 3-8.,
4. segmented cylinder of steel,
4-1. first paragraph tank body, 4-2. second segment tank body, the 3rd section of tank body of 4-3.,
5. left tank,
6. right tank,
7. left support insulator,
The left electric conductor of 7-1.,
8. right support insulator,
The right electric conductor of 8-1.,
9. left sleeve pipe,
The left sleeve pipe electric conductor of 9-1.,
10. right sleeve pipe,
The right sleeve pipe electric conductor of 10-1.,
11. left current transformers,
12. right current transformers,
13. left connection electric conductors,
14. right connection electric conductors,
15. rupture pressure discs,
16. left interstar connection rooms,
17. right interstar connection rooms.
Embodiment
Below in conjunction with accompanying drawing, provide embodiment of the present utility model.
As shown in drawings, the utility model comprises segmented cylinder of steel 4, described segmented cylinder of steel 4 is by first paragraph tank body 4-1, second segment tank body 4-2 and the 3rd section of tank body 4-3 form, between first paragraph tank body 4-1 and second segment tank body 4-2, weld left insulating barrier 2-8, between second segment tank body 4-2 and the 3rd section of tank body 4-3, weld right insulating barrier 3-8, first paragraph tank body 4-1 and left insulating barrier 2-8 form left three-station chamber 2, second segment tank body 4-2 and left insulating barrier 2-8 and right insulating barrier 3-8 form vacuum chamber 1, right insulating barrier 3-8 and the 3rd section of tank body 4-3 form right three-station chamber 3, the left three-station chamber that this structure forms segmented cylinder of steel and left insulating barrier and right insulating barrier, vacuum chamber and right three-station cell structure are more stable, fail safe is higher, especially left three-station chamber 2, vacuum chamber 1 and right three-station chamber 3 on same level line, this Structure Decreasing the height of single break vacuum single busbar connection combined electrical apparatus, be conducive to transportation, left grounded conductive body 2-1 and left isolate conductive body 2-3 are installed in left three-station chamber 2, on left grounded conductive body 2-1, be set with and be welded with left ground connection bellows 2-2, the other end of left ground connection bellows 2-2 is welded on first paragraph tank body 4-1, in the lower end of left isolate conductive body 2-3, left insulated tension pole 2-5 is installed, on left insulated tension pole 2-5, be set with and be welded with left isolation bellows 2-4, the other end of left isolation bellows 2-4 is welded on first paragraph tank body 4-1, on 2 tops, left three-station chamber, be welded with left support insulator 7, left support insulator 7 is connected with left sleeve pipe 9 by left tank 5, outside left sleeve pipe 9, be set with left current transformer 11, in the middle of left support insulator 7, there is left electric conductor 7-1, the upper end of left electric conductor 7-1 is bolted to connection with the left electric conductor 13 that is connected, the left sleeve pipe electric conductor 9-1 being integrated with left sleeve pipe 9 in left sleeve pipe 9 pegs graft with the left electric conductor 13 that is connected, in order more effectively to guarantee the position of left electric conductor 7-1, while preventing left grounded conductive body 2-1 and left isolate conductive body 2-3 divide-shut brake, clashing into left electric conductor 7-1 makes left electric conductor 7-1 occur skew, between left electric conductor 7-1 and left insulating barrier 2-8, weld left insulation support plate 2-6, quiet electric conductor 1-2 is installed in vacuum chamber 1, in quiet electric conductor 1-2 centre position, be welded with the vacuum chamber insulating barrier 1-8 of insulation and fixation, vacuum chamber insulating barrier 1-8 is welded on second segment tank body 4-2 simultaneously, and left insulating barrier 2-8 and right insulating barrier 3-8 also have insulation and fixation to quiet electric conductor 1-2, at quiet electric conductor 1-2 contact place welding radome 1-6, opening part in vacuum chamber 1 bottom is welded with insulating sleeve 1-9, insulating sleeve 1-9 axis is vertical with segmented cylinder of steel 4 axis, operation insulator 1-4 is installed in insulating sleeve 1-9, operation insulator 1-4 top is connected with moving conductive body 1-1, the axis of described moving conductive body 1-1 is also mutually vertical with the axis of segmented cylinder of steel 4, this structure guarantees at right angle setting moving conductive body 1-1 under quiet electric conductor 1-2, to guarantee that moving conductive body 1-1 slides up and down in insulating sleeve 1-9, by moving conductive body 1-1, through conductive sleeve 1-3 and quiet electric conductor 1-2, form single break, on operation insulator 1-4, be set with and be welded with vacuum chamber bellows 1-5, the other end of vacuum chamber bellows 1-5 is welded on second segment tank body 4-2, in insulating sleeve 1-9, top is provided with conductive sleeve 1-3, groove on conductive sleeve 1-3 is provided with the spring 1-7 of Basel, between quiet electric conductor 1-3 and left isolate conductive body 2-3, weld the left side 2-7 that is flexible coupling and realize electrical connection, right grounded conductive body 3-1 and right isolate conductive body 3-3 are installed in right three-station chamber 3, on right grounded conductive body 3-1, be set with and weld right ground connection bellows 3-2, the other end of right ground connection bellows 3-2 is welded on the 3rd section of tank body 4-3, in the lower end of right isolate conductive body 3-3, right insulated tension pole 3-5 is installed, on right insulated tension pole 3-5, be set with and weld right isolation bellows 3-4, the other end of right isolation bellows 3-4 is welded on the 3rd section of tank body 4-3, on 3 tops, right three-station chamber, be welded with right support insulator 8, right support insulator 8 is connected with right sleeve pipe 10 by right tank 6, at the right current transformer 12 of the outer suit of right sleeve pipe 10, in right support insulator 8, there is right electric conductor 8-1, the upper end of right electric conductor 8-1 is bolted to connection with the right electric conductor 14 that is connected, the right sleeve pipe electric conductor 10-1 being integrated with right sleeve pipe 10 in right sleeve pipe 10 pegs graft with the right electric conductor 14 that is connected, in order more effectively to guarantee the position of right electric conductor 8-1, while preventing right grounded conductive body 3-1 and right isolate conductive body 3-3 divide-shut brake, clashing into right electric conductor 8-1 makes right electric conductor 8-1 occur skew, between right electric conductor 8-1 and right insulating barrier 3-8, weld right insulation support plate 3-6, in the middle of right insulating barrier 3-8, there is bending electric conductor 1-10, bending electric conductor 1-10 left end is connected with conductive sleeve 1-3, bending electric conductor 1-10 right-hand member and the right side 3-7 that is flexible coupling is connected, by the right side 3-7 that is flexible coupling, realize the electrical connection of conductive sleeve 1-3 and right isolate conductive body 3-3, wherein, vacuum chamber 1, left three-station chamber 2 and right three-station chamber 3 are separate, during use, vacuum chamber 1, left three-station chamber 2 and right three-station chamber 3 keep vacuum state, described left tank 5, left sleeve pipe 9 and left support insulator 7 form left interstar connection room 16, described right tank 6, right sleeve pipe 10 and right support insulator 8 form right interstar connection room 17, by left interstar connection room 16 and right interstar connection room 17, form one-in-and-one-out single busbar connection, during use, in left interstar connection room 16 and right interstar connection room 17, fill clean dried compressed air or other gas as dielectric or keep vacuum state, if while filling clean dried compressed air or other gas as dielectric in left interstar connection room 16 or right interstar connection room 17, need on left tank 5 or right tank 6, rupture pressure disc 15 be installed.
Claims (7)
1. a single break vacuum single busbar connection combined electrical apparatus, comprise segmented cylinder of steel (4), it is characterized in that, described segmented cylinder of steel (4) is by first paragraph tank body (4-1), second segment tank body (4-2) and the 3rd section of tank body (4-3) form, between first paragraph tank body (4-1) and second segment tank body (4-2), weld left insulating barrier (2-8), between second segment tank body (4-2) and the 3rd section of tank body (4-3), weld right insulating barrier (3-8), first paragraph tank body (4-1) forms left three-station chamber (2) with left insulating barrier (2-8), second segment tank body (4-2) forms vacuum chamber (1) with left insulating barrier (2-8) and right insulating barrier (3-8), right insulating barrier (3-8) forms right three-station chamber (3) with the 3rd section of tank body (4-3), described left three-station chamber (2), vacuum chamber (1) and right three-station chamber (3) are on same level line, quiet electric conductor (1-2) is installed in vacuum chamber (1), in quiet electric conductor (1-2) centre position, be welded with the vacuum chamber insulating barrier (1-8) of insulation and fixation, vacuum chamber insulating barrier (1-8) is welded on second segment tank body (4-2) simultaneously, at quiet electric conductor (1-2) contact place welding radome (1-6), opening part in vacuum chamber (1) bottom is welded with insulating sleeve (1-9), described insulating sleeve (1-9) axis is vertical with segmented cylinder of steel (4) axis, operation insulator (1-4) is installed in insulating sleeve (1-9), operation insulator (1-4) top is connected with moving conductive body (1-1), on operation insulator (1-4), be set with and be welded with vacuum chamber bellows (1-5), the other end of vacuum chamber bellows (1-5) is welded on second segment tank body (4-2), in insulating sleeve (1-9), top is provided with conductive sleeve (1-3), groove on conductive sleeve (1-3) is provided with Basel's spring (1-7), the axis of described moving conductive body (1-1) is also mutually vertical with the axis of segmented cylinder of steel (4), by moving conductive body (1-1), through conductive sleeve (1-3) and quiet electric conductor (1-2), form single break.
2. a kind of single break vacuum single busbar connection combined electrical apparatus according to claim 1, it is characterized in that, left grounded conductive body (2-1) and left isolate conductive body (2-3) are installed in described left three-station chamber (2), on left grounded conductive body (2-1), be set with and be welded with left ground connection bellows (2-2), the other end of left ground connection bellows (2-2) is welded on first paragraph tank body (4-1), in the lower end of left isolate conductive body (2-3), left insulated tension pole (2-5) is installed, on left insulated tension pole (2-5), be set with and be welded with left isolation bellows (2-4), the other end of left isolation bellows (2-4) is welded on first paragraph tank body (4-1), on top, left three-station chamber (2), be welded with left support insulator (7), left support insulator (7) connects to form left interstar connection room (16) by left tank (5) and left sleeve pipe (9), outside left sleeve pipe (9), be set with left current transformer (11), in the middle of left support insulator (7), there is left electric conductor (7-1), the upper end of left electric conductor (7-1) is bolted to connection with the left electric conductor (13) that is connected, the left sleeve pipe electric conductor (9-1) being integrated with left sleeve pipe (9) in left sleeve pipe (9) is pegged graft with the left electric conductor (13) that is connected, between left electric conductor (7-1) and left insulating barrier (2-8), weld left insulation support plate (2-6), between left isolate conductive body (2-3) and quiet electric conductor (1-2), weld a left side be flexible coupling (2-7) realize electrical connection.
3. a kind of single break vacuum single busbar connection combined electrical apparatus according to claim 1, it is characterized in that, right grounded conductive body (3-1) and right isolate conductive body (3-3) are installed in described right three-station chamber (3), on right grounded conductive body (3-1), be set with and weld right ground connection bellows (3-2), the other end of right ground connection bellows (3-2) is welded on the 3rd section of tank body (4-3), in the lower end of right isolate conductive body (3-3), right insulated tension pole (3-5) is installed, on right insulated tension pole (3-5), be set with and weld right isolation bellows (3-4), the other end of right isolation bellows (3-4) is welded on the 3rd section of tank body (4-3), on top, right three-station chamber (3), be welded with right support insulator (8), right support insulator (8) connects to form right interstar connection room (17) by right tank (6) and right sleeve pipe (10), suit right current transformer (12) outside right sleeve pipe (10), in right support insulator (8), there is right electric conductor (8-1), the upper end of right electric conductor (8-1) is bolted to connection with the right electric conductor (14) that is connected, the right sleeve pipe electric conductor (10-1) being integrated with right sleeve pipe (10) in right sleeve pipe (10) is pegged graft with the right electric conductor (14) that is connected, between right electric conductor (8-1) and right insulating barrier (3-8), weld right insulation support plate (3-6), in the middle of right insulating barrier (3-8), there is bending electric conductor (1-10), bending electric conductor (1-10) left end is connected with conductive sleeve (1-3), bending electric conductor (1-10) right-hand member be flexible coupling with the right side (3-7) be connected, by the right side be flexible coupling (3-7) realize the electrical connection of conductive sleeve (1-3) and right isolate conductive body (3-3).
4. a kind of single break vacuum single busbar connection combined electrical apparatus according to claim 1, it is characterized in that, described vacuum chamber (1), left three-station chamber (2) and right three-station chamber (3) are separate, and vacuum chamber during use (1), left three-station chamber (2) and right three-station chamber (3) keep vacuum state.
5. a kind of single break vacuum single busbar connection combined electrical apparatus according to claim 2, is characterized in that, fills clean dried compressed air or other gas as dielectric or keep vacuum state in described left interstar connection room (16).
6. a kind of single break vacuum single busbar connection combined electrical apparatus according to claim 3, is characterized in that, fills clean dried compressed air or other gas as dielectric or keep vacuum state in described right interstar connection room (17).
7. according to a kind of single break vacuum single busbar connection combined electrical apparatus described in claim 5 or 6, it is characterized in that, if while filling clean dried compressed air or other gas as dielectric in left interstar connection room (16) or right interstar connection room (17), need to be at left tank (5) or the upper rupture pressure disc (15) of installing of right tank (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320536161.3U CN203445054U (en) | 2013-08-30 | 2013-08-30 | Single-fracture vacuum single-busbar combination electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320536161.3U CN203445054U (en) | 2013-08-30 | 2013-08-30 | Single-fracture vacuum single-busbar combination electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445054U true CN203445054U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320536161.3U Expired - Fee Related CN203445054U (en) | 2013-08-30 | 2013-08-30 | Single-fracture vacuum single-busbar combination electric appliance |
Country Status (1)
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| CN (1) | CN203445054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441030A (en) * | 2013-08-30 | 2013-12-11 | 沈阳华德海泰电器有限公司 | Single-fracture vacuum single-bus combined electrical apparatus |
-
2013
- 2013-08-30 CN CN201320536161.3U patent/CN203445054U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441030A (en) * | 2013-08-30 | 2013-12-11 | 沈阳华德海泰电器有限公司 | Single-fracture vacuum single-bus combined electrical apparatus |
| CN103441030B (en) * | 2013-08-30 | 2015-09-02 | 沈阳华德海泰电器有限公司 | A kind of single break vacuum single busbar connection combined electrical apparatus |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20150830 |
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| EXPY | Termination of patent right or utility model |