CN202094031U - Single-column vertical telescopic outdoor high-voltage alternating current blocking switch - Google Patents
Single-column vertical telescopic outdoor high-voltage alternating current blocking switch Download PDFInfo
- Publication number
- CN202094031U CN202094031U CN2011200844967U CN201120084496U CN202094031U CN 202094031 U CN202094031 U CN 202094031U CN 2011200844967 U CN2011200844967 U CN 2011200844967U CN 201120084496 U CN201120084496 U CN 201120084496U CN 202094031 U CN202094031 U CN 202094031U
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- wing base
- switch
- voltage alternating
- cutter
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Abstract
The utility model provides a single-column vertical telescopic outdoor high-voltage alternating current blocking switch which comprises a high-voltage alternating current blocking switch body and a main switch blade (10), wherein the high-voltage alternating current blocking switch body comprises a support insulator (6) and a grounding static contact (8); the grounding static contact (8) is arranged at a side opposite to the support insulator (6); and the included angle between the center line of the main switch blade (10) and the center line of the support insulator (6) is 180 degrees, therefore the performance of the isolating switch of a vertical circuit can be satisfied.
Description
One, technical field
The utility model relates to the vertical telescopic outdoor high-voltage alternating current of a kind of single-column and cuts off switch, and especially a kind of vertical telescopic outdoor high-voltage alternating current of single-column that is adapted to rated voltage 550kV in the electric power system cuts off switch.
Two, background technology
Realize disconnecting and closure in order to make transmission line, just need in transmission line, insert and cut off switch, therefore isolating switch is one of capital equipment in the high-tension power transmission and transformation equipment, outdoor high-voltage isolating switch is owing to the reason on the assembly structure at present, when running into disadvantageous natural weather, the circulation poor stability; Dynamic and static contact impacts bigger when closing a floodgate, and action stability is poor, brings difficulty to the operator, and the defective of dynamic/static contact contact structures causes the combined floodgate poor reliability simultaneously, has had a strong impact on the useful life of isolating switch.
Three, summary of the invention
In order to overcome above-mentioned technical disadvantages, the purpose of this utility model provides the vertical telescopic outdoor high-voltage alternating current of a kind of single-column and cuts off switch, has therefore satisfied the performance of the isolating switch of horizontal path.
For achieving the above object, the technical scheme that the utility model is taked is: include high-voltage alternating and cut off Switch main body and main switch cutter; High-voltage alternating cuts off Switch main body and is set to include post insulator and ground connection fixed contact, the ground connection fixed contact be arranged on post insulator on the side, the angle that the center line of main switch cutter is set to the center line of post insulator is 180 °.
When the work of main switch cutter is stretched, be connected with the ground connection fixed contact of opposite side, realized the connection of circuit, do not work when folding when the main switch cutter, be not connected with the ground connection fixed contact of opposite side, circuit is disconnected; Owing to designed the main switch cutter, realized that the connected sum of horizontal path disconnects, therefore satisfied the performance of the isolating switch of horizontal path.
The utility model has designed, high-voltage alternating cuts off Switch main body and is set to include support, moving wing base, quiet wing base, post insulator, rotating insulated son, the operator fixed contact, the ground connection fixed contact, grading ring, the ground connection plug-in strip, main ground cutter locking device, drive link, operator operating mechanism and ground cutter operating mechanism, moving wing base and quiet wing base are set to be separately positioned on the support, moving wing base is provided with post insulator and rotating insulated son, quiet wing base is provided with post insulator, be provided with ground connection fixed contact and grading ring on the top of post insulator, top at the post insulator of quiet wing base also is provided with the operator fixed contact, the operator fixed contact is set to be connected with the ground connection fixed contact, top at the post insulator that moves wing base also is provided with the main switch cutter, the main switch cutter is set to be connected with the ground connection fixed contact, be provided with and move the ground connection plug-in strip that the wing base rotary type connects in a side of moving wing base, the opposite side relative with ground connection plug-in strip on the moving wing base at quiet wing base is provided with the ground connection plug-in strip that connects with quiet wing base rotary type, moving wing base is provided with operator operating mechanism and ground cutter operating mechanism, the operator operating mechanism is set to connect with the main switch cutter by the axis of drive link and rotating insulated son, the ground cutter operating mechanism of moving wing base is set to by connecting with the ground connection plug-in strip of moving wing base by drive link, quiet wing base is provided with ground cutter operating mechanism, the ground cutter operating mechanism of quiet wing base is set to by connecting with the ground connection plug-in strip of quiet wing base by drive link, main ground cutter locking device is set to three and be separately positioned on moving wing base and quiet wing base, and main ground cutter locking device is set to connect with the output shaft of operate operating mechanism and ground cutter operating mechanism.
The utility model has designed, also include pedestal, the main switch cutter is set to collapsible single armed gripper, is set to include contact tube and following contact tube, last contact tube is set to connect with following contact tube radial type, and following contact tube is set to connect with post insulator by pedestal.
The utility model has designed, last contact tube is set to include connecting lever, cover is flexible coupling, last shell, upper thrust rod, supporter II, supporter I, spring and fingertip, lower end at last shell is provided with connecting lever, the cover that is flexible coupling is set to be sleeved on the lower end of shell, upper thrust rod is arranged in the shell and is set to and connects with last shell slidingtype, the connecting portion up and down of upper thrust rod and last shell is provided with oil seal washer, the lower end of fingertip is set to connect with last shell radial type, supporter II is set to U-shaped, supporter II is set to connect with the upper end of upper thrust rod is fixed, the lower end of supporter I is set to connect with the fingertip radial type, be set to connect with supporter II in the middle part of supporter I by brace, supporter I and supporter II are set to respectively connect with the brace radial type, be provided with spring between supporter I and fingertip, the cover that is flexible coupling is set to aluminum products.
The utility model has designed, following contact tube is set to include lower house, lower thrust rod, gear and tooth bar, lower house is provided with cavity, gear is arranged in the cavity of lower house and is set to connect with lower house by rotation axis, tooth bar is set to connect with gear-engaged type, lower thrust rod is set to connect with the lower house slidingtype, between lower thrust rod and lower house, be provided with the recovery spring, one end of lower thrust rod is set to connect with tooth bar and the other end is set to connect with the pedestal radial type, being set to two sides on the top of lower house is circular arc, it in the middle of two circular arcs CLB on the plane vertical with the lower house center line, the width d on plane is set to 6.5-7.5mm, the top of lower house 41 is set to connect with the upper thrust rod contact of last contact tube, and the rotation axis of gear is set to connect with the connecting lever of last contact tube.
The utility model has designed, also include connecting rod I and connecting rod II, lower house is set to connect with pedestal by the cover that is flexible coupling, the bottom of lower house is set to connect with the end radial type of connecting rod I, the other end of connecting rod I is set to connect with the end radial type of connecting rod II, the other end of connecting rod II is set to be fixedly connected with the axis of rotating insulated son
The utility model has designed, and also includes buffer unit, is provided with buffer unit in a side of lower house, and lower house is set to connect with the buffer unit contact, and buffer unit is set to connect with pedestal by elastic steel sheet.
The utility model has designed, also include adjusting screw(rod) and hanger, adjusting screw(rod) is set to connect with support, the inner of moving wing base is set to connect with adjusting screw(rod) by two hold-down nuts on the adjusting screw(rod), the outer end of quiet wing base is set to connect with adjusting screw(rod) by two hold-down nuts on the adjusting screw(rod), and the inner of quiet wing base is set to connect with support by hanger.
The utility model has designed, main ground cutter locking device is set to include notch board and roller, roller is arranged on the output shaft of operator operating mechanism and ground cutter operating mechanism, and notch board is set to connect with the support slidingtype, and the groove of notch board is set to connect with the roller contact.
Technique effect of the present utility model is: because the utility model operator moving contact special construction, improved the through-current capability of fingertip, reduced contact resistance, and spring compression is adopted in the outside, it is reliable fully to have guaranteed to close a floodgate, outer assembly structure is more convenient for assembling, and compares original built-in fingertip structure, the waterproof and dustproof better effects if.
Four, description of drawings
Fig. 1 is a schematic diagram of the present utility model:
Fig. 2 is the structural representation of last contact tube 15:
Fig. 3 is the structural representation of following contact tube 24:
Fig. 4 is the A portion enlarged drawing of Fig. 1:
Fig. 5 is the C-C profile of Fig. 1:
Fig. 6 is the B portion enlarged drawing of Fig. 1.
Five, embodiment
Accompanying drawing is an embodiment of the present utility model, specify present embodiment in conjunction with the accompanying drawings, include support 1, moving wing base 4, quiet wing base 12, post insulator 6, rotating insulated sub 7, main switch cutter 10, operator fixed contact 11, ground connection fixed contact 8, grading ring 9, ground connection plug-in strip 5, main ground cutter locking device 14, drive link 3, operator operating mechanism 2 and ground cutter operating mechanism 13
In the present embodiment, also include pedestal 28, main switch cutter 10 is set to collapsible single armed gripper, be set to include contact tube 15 and following contact tube 24, last contact tube 15 is set to connect with following contact tube 24 radial types, and following contact tube 24 is set to connect with post insulator 6 by pedestal 28.
In the present embodiment, last contact tube 15 is set to include connecting lever 16, cover 17 is flexible coupling, last shell 19, upper thrust rod 18, supporter II20, supporter I21, spring 22 and fingertip 23, be provided with connecting lever 16 in the lower end of last shell 19, the cover 17 that is flexible coupling is set to be sleeved on the lower end of shell 19, upper thrust rod 18 is arranged in the shell 19 and is set to and connects with last shell 19 slidingtypes, upper thrust rod 18 is provided with oil seal washer with the connecting portion up and down of last shell 19, the lower end of fingertip 23 is set to connect with last shell 19 radial types, supporter II20 is set to U-shaped, supporter II20 is set to connect with the upper end of upper thrust rod 18 is fixed, the lower end of supporter I21 is set to connect with fingertip 23 radial types, be set to connect with supporter II20 in the middle part of supporter I21 by brace, supporter I21 and supporter II20 are set to respectively connect with the brace radial type, be provided with spring 22 between supporter I21 and fingertip 23, the cover 17 that is flexible coupling is set to aluminum products.
In the present embodiment, following contact tube 24 is set to include lower house 41, lower thrust rod 42, gear 26 and tooth bar 25, lower house 41 is provided with cavity, gear 26 is arranged in the cavity of lower house 41 and is set to connect with lower house 41 by rotation axis, tooth bar 25 is set to and 26 engagement type connections of gear, lower thrust rod 42 is set to connect with lower house 41 slidingtypes, between lower thrust rod 42 and lower house 41, be provided with the recovery spring, one end of lower thrust rod 42 is set to connect with tooth bar 25 and the other end is set to connect with pedestal 28 radial types, being set to two sides on the top of lower house 41 is circular arc, it in the middle of two circular arcs CLB on the plane 27 vertical with lower house 41 center lines, the width d on plane 27 is set to 6.5mm, the top of lower house 41 is set to connect with upper thrust rod 18 contacts of last contact tube 15, and the rotation axis of gear 26 is set to connect with the connecting lever 16 of last contact tube 15.
In the present embodiment, also include buffer unit 31, connecting rod I32 and connecting rod II33, lower house 41 is set to connect with pedestal 28 by the cover 17 that is flexible coupling, the bottom of lower house 41 is set to connect with the end radial type of connecting rod I32, the other end of connecting rod I32 is set to connect with the end radial type of connecting rod II33, the other end of connecting rod II33 is set to be fixedly connected with rotating insulated sub 7 axis, side at lower house 41 is provided with buffer unit 31, lower house 41 is set to connect with buffer unit 31 contacts, and buffer unit 31 is set to connect with pedestal 28 by elastic steel sheet.
In the present embodiment, also include adjusting screw(rod) 34 and hanger 35, adjusting screw(rod) 34 is set to connect with support 1, the inner of moving wing base 4 is set to connect with adjusting screw(rod) 34 by two hold-down nuts on the adjusting screw(rod) 34, the inner of quiet wing base 12 is set to connect with adjusting screw(rod) 34 by two hold-down nuts on the adjusting screw(rod) 34, and the outer end of quiet wing base 12 is set to connect with support 1 by hanger 35.
In the present embodiment, main ground cutter locking device 14 is set to include notch board 36 and roller 37, roller 37 is arranged on the output shaft of operator operating mechanism 2 and ground cutter operating mechanism 13, and notch board 36 is set to connect with support 1 slidingtype, and the groove of notch board 36 is set to connect with roller 37 contacts.
The operating process of main switch cutter: the axis of operator operating mechanism 2 driven rotary insulators 7 rotates 180 °, rotating insulated sub 7 axis is by connecting rod I32 and connecting rod II33, the lower house 41 that connecting rod I32 drives main switch cutter 10 rotates in vertical plane, even main switch cutter 10 rotates in vertical plane; Lower thrust rod 42 rotates by tooth bar 25 driven gears 26 simultaneously, gear 26 is gone up shell 19 by connecting lever 16 drives and is done compound motion, the top end face effect upper thrust rod 18 of lower house 41, when the approaching combined floodgate of isolating switch, making down the contact of inclined-plane, contact tube 24 gear box top go up contact tube 15 promotion upper thrust rods 18 moves upward, spring 22 is compressed, the supporter II20 of fingertip 23 moves upward, make operator moving contact fingertip clamp fixed contact stationary contact bar, then fastening spring 22 is compressed, keep fingertip to clamp the suitable force value of fixed contact stationary contact bar, the motion of closing a floodgate finishes.The sub-switching operation process makes that up and down contact tube is folding in contrast.
The operating process of ground connection plug-in strip: ground cutter operating mechanism 13 drives 5 rotating shafts of ground connection plug-in strip by kinematic link, moving wing base rotating shaft, four connecting rods and rotates 130 °, drive ground connection plug-in strip 5 rotates 90 ° in perpendicular after, ground connection plug-in strip 5 moving contact guide plates contact with the fixed contact guide plate, owing to stopped, ground connection plug-in strip 5 stops operating, but 5 rotating shafts of ground connection plug-in strip are still being rotated under mechanism drives, force the passive connecting lever of rotating shaft to change the direction of motion, along ground connection plug-in strip 5 directions moving contact is upwards boosted and insert in people's ground connection fixed contact 8; The sub-switching operation process because the ground connection moving contact is positioned at fixed contact, and action of gravity, can only move downward in contrast, withdraws from fixed contact, under the drive of connecting lever, rotates 90 ° in perpendicular then, gets back to the separating brake position.
Among second embodiment of the present utility model, the width d on plane 27 is set to 7.5mm.
Among the 3rd embodiment of the present utility model, the width d on plane 27 is set to 7.0mm.
The utlity model has characteristics:
1, owing to the utility model operator moving contact special construction, improved the through-current capability of fingertip, reduced contact resistance, and spring compression is adopted in the outside, and it is reliable fully to have guaranteed to close a floodgate, and outer assembly structure is more convenient for assembling, compare original built-in fingertip structure, the waterproof and dustproof better effects if.
2, go up contact tube and adopt oil sealing sealing, compare former sealing ring, seal closure structure, effectively waterproof is avoided the contained spring corrosion; The improvement of gear box has solved the combined floodgate instability problem that difference variation causes.
3, moving wing base adopts four screw rod supports, is convenient to Field adjustment; Contact tube changed the welded type contact tube into by former assembled, had guaranteed the through-flow stability of contact tube.
4, the separation of pedestal galvanic circle, support component and transmission accessory has strengthened the intensity of switch support section; The choose reasonable of accessory material has further prolonged the useful life of switch; Field layout is convenient in the optimization of the base kind of drive.
5, lead the suspension mounting means of ground cutter closedown structure and sound side locking connecting rod, improved the sensitivity of locking, reduced the transmission resistance, improved processing safety.
Cut off in the switching technique field at the vertical telescopic outdoor high-voltage alternating current of single-column; every high-voltage alternating partition Switch main body that includes is set to include post insulator 6 and ground connection fixed contact 8; ground connection fixed contact 8 be arranged on post insulator 6 on the side, it is that 180 ° technology contents is all in protection range of the present utility model that the center line of main switch cutter 10 is set to angle with the center line of post insulator 6.
Claims (9)
1. the vertical telescopic outdoor high-voltage alternating current of single-column cuts off switch; It is characterized in that: include high-voltage alternating and cut off Switch main body and main switch cutter (10); High-voltage alternating cuts off Switch main body and is set to include post insulator (6) and ground connection fixed contact (8), ground connection fixed contact (8) be arranged on post insulator (6) on the side, the angle that the center line of main switch cutter (10) is set to the center line of post insulator (6) is 180 °.
2. the vertical telescopic outdoor high-voltage alternating current of single-column according to claim 1 cuts off switch; It is characterized in that: high-voltage alternating cuts off Switch main body and is set to include support (1), moving wing base (4), quiet wing base (12), post insulator (6), rotating insulated son (7), operator fixed contact (11), ground connection fixed contact (8), grading ring (9), ground connection plug-in strip (5), main ground cutter locking device (14), drive link (3), operator operating mechanism (2) and ground cutter operating mechanism (13), moving wing base (4) and quiet wing base (12) are set to be separately positioned on the support (1), moving wing base (4) is provided with post insulator (6) and rotating insulated son (7), quiet wing base (12) is provided with post insulator (6), be provided with ground connection fixed contact (8) and grading ring (9) on the top of post insulator (6), also be provided with operator fixed contact (11) on the top of the post insulator (6) of quiet wing base (12), operator fixed contact (11) is set to be connected with ground connection fixed contact (8), top at the post insulator (6) that moves wing base (4) also is provided with main switch cutter (10), main switch cutter (10) is set to be connected with ground connection fixed contact (8), be provided with and move the ground connection plug-in strip (5) that wing base (4) rotary type connects in a side of moving wing base (4), the opposite side relative with ground connection plug-in strip (5) on the moving wing base (4) at quiet wing base (12) is provided with the ground connection plug-in strip (5) that connects with quiet wing base (12) rotary type, moving wing base (4) is provided with operator operating mechanism (2) and ground cutter operating mechanism (13), operator operating mechanism (2) is set to connect with main switch cutter (10) by the axis of drive link (3) and rotating insulated son (7), the ground cutter operating mechanism (13) of moving wing base (4) is set to by connecting with the ground connection plug-in strip (5) of moving wing base (4) by drive link (3), quiet wing base (12) is provided with ground cutter operating mechanism (13), the ground cutter operating mechanism (13) of quiet wing base (12) is set to by connecting with the ground connection plug-in strip (5) of quiet wing base (12) by drive link (3), main ground cutter locking device (14) is set to three and be separately positioned on moving wing base (4) and quiet wing base (12), main ground cutter locking device (14) be set to the operating mechanism of operating (2) and the output shaft of cutter operating mechanism (13) connect.
3. the vertical telescopic outdoor high-voltage alternating current of single-column according to claim 2 cuts off switch; It is characterized in that: also include pedestal (28), main switch cutter (10) is set to collapsible single armed gripper, be set to include contact tube (15) and following contact tube (24), last contact tube (15) is set to connect with following contact tube (24) radial type, and following contact tube (24) is set to connect with post insulator (6) by pedestal (28).
4. the vertical telescopic outdoor high-voltage alternating current of single-column according to claim 3 cuts off switch; It is characterized in that: go up contact tube (15) and be set to include connecting lever (16), cover (17) is flexible coupling, last shell (19), upper thrust rod (18), supporter II (20), supporter I (21), spring (22) and fingertip (23), be provided with connecting lever (16) in the lower end of last shell (19), the cover (17) that is flexible coupling is set to be sleeved on the lower end of shell (19), upper thrust rod (18) is arranged in the shell (19) and is set to and connects with last shell (19) slidingtype, upper thrust rod (18) is provided with oil seal washer with the connecting portion up and down of last shell (19), the lower end of fingertip (23) is set to connect with last shell (19) radial type, supporter II (20) is set to U-shaped, supporter II (20) is set to fixed connection of upper end with upper thrust rod (18), the lower end of supporter I (21) is set to connect with fingertip (23) radial type, be set to connect with supporter II (20) in the middle part of supporter I (21) by brace, supporter I (21) and supporter II (20) are set to respectively connect with the brace radial type, be provided with spring (22) between supporter I (21) and fingertip (23), the cover (17) that is flexible coupling is set to aluminum products.
5. the vertical telescopic outdoor high-voltage alternating current of single-column according to claim 3 cuts off switch; It is characterized in that: following contact tube (24) is set to include lower house (41), lower thrust rod (42), gear (26) and tooth bar (25), lower house (41) is provided with cavity, gear (26) is arranged in the cavity of lower house (41) and is set to connect with lower house (41) by rotation axis, tooth bar (25) is set to and engagement type connection of gear (26), lower thrust rod (42) is set to connect with lower house (41) slidingtype, between lower thrust rod (42) and lower house (41), be provided with the recovery spring, one end of lower thrust rod (42) is set to connect with tooth bar (25) and the other end is set to connect with pedestal (28) radial type, being set to two sides on the top of lower house (41) is circular arc, it in the middle of two circular arcs CLB on the plane (27) vertical with lower house (41) center line, the width d on plane (27) is set to 6.5-7.5mm, the top of lower house (41) is set to connect with upper thrust rod (18) contact of last contact tube (15), and the rotation axis of gear (26) is set to connect with the connecting lever (16) of last contact tube (15).
6. the vertical telescopic outdoor high-voltage alternating current of single-column according to claim 2 cuts off switch; It is characterized in that: also include connecting rod I (32) and connecting rod II (33), lower house (41) is set to connect with pedestal (28) by the cover (17) that is flexible coupling, the bottom of lower house (41) is set to connect with the end radial type of connecting rod I (32), the other end of connecting rod I (32) is set to connect with the end radial type of connecting rod II (33), and the other end of connecting rod II (33) is set to be fixedly connected with the axis of rotating insulated son (7).
7. the vertical telescopic outdoor high-voltage alternating current of single-column according to claim 2 cuts off switch; It is characterized in that: also include buffer unit (31), side at lower house (41) is provided with buffer unit (31), lower house (41) is set to connect with buffer unit (31) contact, and buffer unit (31) is set to connect with pedestal (28) by elastic steel sheet.
8. the vertical telescopic outdoor high-voltage alternating current of single-column according to claim 2 cuts off switch; It is characterized in that: also include adjusting screw(rod) (34) and hanger (35), adjusting screw(rod) (34) is set to connect with support (1), the inner of moving wing base (4) is set to connect with adjusting screw(rod) (34) by two hold-down nuts on the adjusting screw(rod) (34), the outer end of quiet wing base (12) is set to connect with adjusting screw(rod) (34) by two hold-down nuts on the adjusting screw(rod) (34), and the inner of quiet wing base (12) is set to connect with support (1) by hanger (35).
9. the vertical telescopic outdoor high-voltage alternating current of single-column according to claim 2 cuts off switch; It is characterized in that: main ground cutter locking device (14) is set to include notch board (36) and roller (37), roller (37) is arranged on the output shaft of operator operating mechanism (2) and ground cutter operating mechanism (13), notch board (36) is set to connect with support (1) slidingtype, and the groove of notch board (36) is set to connect with roller (37) contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200844967U CN202094031U (en) | 2011-03-17 | 2011-03-17 | Single-column vertical telescopic outdoor high-voltage alternating current blocking switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200844967U CN202094031U (en) | 2011-03-17 | 2011-03-17 | Single-column vertical telescopic outdoor high-voltage alternating current blocking switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202094031U true CN202094031U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200844967U Expired - Fee Related CN202094031U (en) | 2011-03-17 | 2011-03-17 | Single-column vertical telescopic outdoor high-voltage alternating current blocking switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202094031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521873A (en) * | 2020-05-11 | 2020-08-11 | 广东电网有限责任公司 | GW16 type isolating switch loop resistance and measuring method thereof |
-
2011
- 2011-03-17 CN CN2011200844967U patent/CN202094031U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521873A (en) * | 2020-05-11 | 2020-08-11 | 广东电网有限责任公司 | GW16 type isolating switch loop resistance and measuring method thereof |
| CN111521873B (en) * | 2020-05-11 | 2022-05-17 | 广东电网有限责任公司 | Method for measuring loop resistance of GW16 type disconnecting switch static contact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20160317 |