CN103594294B - The detection method of circuit breaker operation mechanism mechanical property and circuit breaker operation mechanism - Google Patents
The detection method of circuit breaker operation mechanism mechanical property and circuit breaker operation mechanism Download PDFInfo
- Publication number
- CN103594294B CN103594294B CN201310618643.8A CN201310618643A CN103594294B CN 103594294 B CN103594294 B CN 103594294B CN 201310618643 A CN201310618643 A CN 201310618643A CN 103594294 B CN103594294 B CN 103594294B
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- energy storage
- circuit breaker
- action
- storage lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A detection method for circuit breaker operation mechanism mechanical property, described detection method comprises energy storage step, energy storage lever action, drivening rod mechanism action, to make energy-stored spring be in compressive state, to complete energy storage; Combined floodgate step, energy-stored spring drives energy storage lever action, the action of energy storage lever drives linkage, and linkage drives the action of divide-shut brake executive item, makes the moving contact of circuit breaker be in "on" position; Detecting step, operating grip drives energy storage lever action, whether drives the action of divide-shut brake executive item to detect linkage, thus judges each parts assembling of circuit breaker and install whether put in place, detect that whether circuit breaker is qualified, thus save testing cost to facilitate.
Description
Technical field
The present invention relates to circuit breaker detection technique field, particularly, relate to a kind of lever operated running status detecting operating mechanism by operating mechanism, thus judge the detection method of the circuit breaker operation mechanism mechanical property that can circuit breaker reliably close a floodgate.
Background technology
Circuit breaker is one of key equipment of electric power system, and the reliability of its running status to electric power system has significant impact.In actual motion, the most serious mechanical breakdown that circuit breaker occurs is no more than being tripping and malfunction.Tripping refers to that circuit breaker in relaying protection and automatic safety device action or in operation, and after drawing switch sends tripping operation or the signal that closes a floodgate, circuit breaker does not have action; And malfunction refer to drawing switch do not send tripping operation or switching signal time, circuit breaker has carried out tripping operation or feed motion voluntarily.
The applicant studies discovery, cause the main cause of these type of faults such as circuit breaker tripping and malfunction be circuit breaker operating mechanism install not in place, be embodied in mechanism's card, part distortion, displacement or damage, divide-shut brake core slackness, thread off malfunctioning etc., these mechanical breakdowns account for greatly the 70%-80% of circuit breaker failure.Therefore, need to detect the mechanical property of circuit breaker.
For the problems referred to above, mostly adopt off-line routine test to carry out periodic inspection with operation to circuit breaker in the past, whether to conform with the regulations requirement to detect its mechanical property.This maintenance mode manufactures situation according to the operation of equipment, preset service work content and cycle, arrive specified period to overhaul, occur with Accident prevention, but this maintenance mode blindness is large, costly, invariably can not cause the waste of manpower, financial resources and material resources, meanwhile, due to operation and excessive dismounting frequently, the reliability of breaker mechanic property is reduced on the contrary.
Therefore, occurred now that a kind of important parameter to circuit breaker carries out long-continued online test method.Such as, Chinese patent literature CN102384768A discloses a kind of circuit breaker online monitoring method and device, said method comprising the steps of: on-line real time monitoring target equipment data, described target equipment data comprises: breaker mechanic property, circuit breaker electrical characteristic, circuit breaker insulation status etc.; Describe according to parameter information, supplemental characteristic name, CDC type and annotations and comments and generate circuit breaker on-line monitoring ICD simulation files; Simulation files and online monitoring data are first uploaded to integrated treatment unit, then uploads to remote monitoring center.Described circuit breaker on-Line Monitor Device comprises data monitoring unit, format conversion unit and uploading unit.Because the data relevant to circuit breaker by this on-Line Monitor Device have carried out format specification, have compressed the number of data type, alleviated the burden of staff, improve the fail safe of operating efficiency and circuit breaker.
In fact, the 70%-80% of circuit breaker failure is the mechanical breakdown such as circuit breaker tripping and malfunction, makes being detected as top priority breaker mechanical fault.But existing on-line monitoring method all needs the monitoring device of other a set of independent configuration in actual monitoring, and it does not utilize the structure of circuit breaker itself to detect its mechanical property, thus makes monitoring cost higher.
Summary of the invention
Problem to be solved by this invention is existing high to breaker mechanic property testing cost, the technical problem of step complexity, thus provide a kind of can by the lever operated running status detecting operating mechanism of operating mechanism, thus judge the detection method of the circuit breaker operation mechanism mechanical property that can circuit breaker reliably close a floodgate.
To achieve these goals, the invention provides a kind of detection method of circuit breaker operation mechanism mechanical property, described operating mechanism comprises handle and energy storage lever, and link setting mutually; Linkage, can action under the drive of energy storage lever; Energy-stored spring, can be compressed to drive energy storage lever action by linkage; Divide-shut brake executive item, can realize divide-shut brake under the drive of linkage; It is characterized in that, described detection method comprises energy storage step, energy storage lever action, drivening rod mechanism action, to make energy-stored spring be in compressive state, to complete energy storage; Combined floodgate step, energy-stored spring drives energy storage lever action, the action of energy storage lever drives linkage, and linkage drives the action of divide-shut brake executive item, makes the moving contact of circuit breaker be in "on" position; Detecting step, operating grip drives energy storage lever action, whether drives the action of divide-shut brake executive item to detect linkage.
In detecting step, multi-pass operation is carried out to handle.
Described bar linkage structure comprises connecting rod two, connecting rod three and connecting rod four, and wherein, connecting rod two is connected with divide-shut brake executive item, and connecting rod three and connecting rod two coordinate, and connecting rod four is connected with connecting rod three, and connecting rod four can action under the drive of energy storage lever.
In detecting step, the action of energy storage lever drives connecting rod four, connecting rod three and connecting rod two are failure to actuate; Or be,
Energy storage lever drives connecting rod four, connecting rod three action together with connecting rod two, drive the action of divide-shut brake executive item further, and pulled open by the moving contact of circuit breaker.
Handle and energy storage lever coaxial are installed.
Circuit breaker is performed to the described detection method of 3-5 time.
In addition, the present invention also provides a kind of circuit breaker operation mechanism that can realize detection method described in above-mentioned any one claim, and this operating mechanism comprises handle and energy storage lever, and link setting mutually; Linkage, can action under the drive of energy storage lever; Energy-stored spring, can be compressed to drive energy storage lever action by linkage; Divide-shut brake executive item, can realize divide-shut brake under the drive of linkage.
Described bar linkage structure comprises connecting rod two, connecting rod three and connecting rod four, and wherein, connecting rod two is connected with divide-shut brake executive item, and connecting rod three and connecting rod two coordinate, and connecting rod four is connected with connecting rod three, and connecting rod four can action under the drive of energy storage lever.
Connecting rod three and being matched by ball with connecting rod two.
Handle and energy storage lever coaxial are installed.
Technique scheme of the present invention compared with prior art, has the following advantages:
The detection method of circuit breaker operation mechanism mechanical property of the present invention, in its energy storage step, by the operation of external force such as handle, drive energy storage lever action, and make energy-stored spring be in compression stage by linkage, to complete energy storage, and in combined floodgate step, energy-stored spring drives energy storage lever action, the action of energy storage lever drives linkage, linkage drives the action of divide-shut brake executive item, the moving contact of circuit breaker is made to be in "on" position, in the detection, energy storage lever action is driven by operating grip, the action of divide-shut brake executive item whether is driven to detect linkage, if divide-shut brake executive item is failure to actuate, then illustrate that circuit breaker is in normal "on" position, thus judge each parts assembling of circuit breaker and be in place, if the action of divide-shut brake executive item, moving contact and fixed contact are pulled open, then illustrate that circuit breaker is in improper "on" position, thus judge the assembling of circuit breaker each parts and install not in place, circuit breaker is substandard product, like this, by such detection method, can easily detect that whether circuit breaker is qualified, thus saving testing cost.
The detection method of circuit breaker operation mechanism mechanical property of the present invention, its handle and energy storage lever coaxial are installed, and like this, handle apply external force, can perform above-mentioned detection method easily.
Accompanying drawing explanation
In order to make the content of invention more easily be clearly understood, below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 represents the structural representation of the operating mechanism of the detection method of the circuit breaker operation mechanism mechanical property that the specific embodiment of the invention provides;
Fig. 2 represents the structural representation that the linkage of the operating mechanism of Fig. 1 coordinates with divide-shut brake executive item;
Fig. 3 represents the linkage of the operating mechanism of Fig. 1 and the simplified pinciple schematic diagram of divide-shut brake executive item.
Description of reference numerals
1-divide-shut brake executive item, 2-connecting rod two, 3-connecting rod three, 4-connecting rod four, 5-energy-stored spring, 6-semiaxis, 7-left plate, 8-right plate, 9-macro-axis, 10-square shaft, 11-handle, 12-return spring, 13-energy storage is released and can be marked, 14-gear, 15-push rod, 16-tripping spring, 17-bearing pin, 19-energy storage lever
Embodiment
Be described in detail below in conjunction with the detection method of accompanying drawing to the circuit breaker operation mechanism mechanical property that the specific embodiment of the present invention provides.
In the detection method of circuit breaker operation mechanism mechanical property of the present invention, as Figure 1-3, described operating mechanism comprises handle 11 and energy storage lever 19, linkage, energy-stored spring 5 and divide-shut brake executive item 1, wherein, handle 11 and energy storage lever 19 link setting mutually, linkage can action under the drive of energy storage lever 19, energy-stored spring 5 can be compressed to drive energy storage lever 19 action by linkage, divide-shut brake executive item 1 can realize divide-shut brake under the drive of linkage, like this, described detection method comprises energy storage step, energy storage lever action, drivening rod mechanism action, compressive state is in make energy-stored spring, to complete energy storage, combined floodgate step, energy-stored spring drives energy storage lever action, the action of energy storage lever drives linkage, and linkage drives the action of divide-shut brake executive item, makes the moving contact of circuit breaker be in "on" position, detecting step, operating grip drives energy storage lever action, whether drives the action of divide-shut brake executive item to detect linkage.
Like this, energy storage lever action is driven by operating grip 11, the action of divide-shut brake executive item whether is driven to detect linkage, if divide-shut brake executive item is failure to actuate, then illustrate that circuit breaker is in normal "on" position, thus judge each parts assembling of circuit breaker and be in place, if the action of divide-shut brake executive item, moving contact and fixed contact are pulled open, then illustrate that circuit breaker is in improper "on" position, thus judge the assembling of circuit breaker each parts and install not in place, circuit breaker is substandard product, like this, by such detection method, can easily detect that whether circuit breaker is qualified, thus saving testing cost.
In reality detects, the operation of repeated detection step can be carried out handle, thus guarantee whether the "on" position of circuit breaker is stablized further.
Further, as shown in Figures 2 and 3, described bar linkage structure comprises connecting rod 22, connecting rod 33 and connecting rod 44, wherein, connecting rod two is connected with divide-shut brake executive item 1, and connecting rod three and connecting rod two coordinate, connecting rod four is connected with connecting rod three, and connecting rod 44 can action under the drive of energy storage lever 19.
Like this, in energy storage step, energy storage lever does not contact energy-stored spring in other words within a period of time of rotating beginning, contact energy-stored spring but be not subject to the active force of energy-stored spring, but energy storage lever again can connecting rod 44 action of drivening rod mechanism, in a kind of embodiment, energy storage lever 19 comprises cam structure (not shown), like this, electric operating or manual operation external force band moving cam rotate, connecting rod 44 action of cam driven linkage is with compressed energy-storage spring, energy storage lever is not then contacted with energy-stored spring or is not subject to the elastic pressure of energy-stored spring, after cam turns to certain angle, connecting rod 44 will make energy-stored spring be in compressive state.Now, energy-stored spring will be in compressive state, and energy storage step completes.The energy-stored spring 5 being in compressive state can drive energy storage lever action in follow-up combined floodgate step, to make connecting rod 33 and connecting rod 22 successive relay trip.
Further, in combined floodgate step, as shown in Figure 3, connecting rod 44 is withstood can not move by push rod 15, energy-stored spring 5 promotes energy storage lever 19 and rotates counterclockwise, and then promote connecting rod 33 and connecting rod 22 to left movement by bearing pin 17, then promote divide-shut brake executive item 1 to rotate clockwise (rotate around Oe point and arrange), make to release semiaxis (not shown) rotation of threading off, and make and release the energy storage lever that semiaxis of threading off interlocks and thread off, energy storage lever is under the active force of energy-stored spring, the macro-axis 9 of circuit breaker is driven to rotate, thus make divide-shut brake executive item drive moving contact closed to be in "on" position along direction shown in Fig. 3 arrow.
As shown in Figure 3, when Oc point is in the below of Od and Ob line, operating mechanism is in the dead point state of mechanism, and moving contact is then in stable "on" position.
In detecting step, the action of energy storage lever drives connecting rod four, connecting rod three and connecting rod two are failure to actuate, namely, when after breaker closing, Oc point is in the below of Od and Ob line, and operating mechanism enters mechanism's dead point state, now, carry out repeatedly handle 11, such as, after 5 operations, energy storage lever can drivening rod 44 action, but connecting rod 33 and connecting rod 22 are failure to actuate, this illustrates that this state is the "on" position of normal table; Or be,
Energy storage lever drives connecting rod four, connecting rod three action together with connecting rod two, the action of further drive divide-shut brake executive item 1, and the moving contact of circuit breaker is pulled open, namely, when after breaker closing, Oc point is not in the below of Od and Ob line, now, handle 11 is carried out repeatedly, such as, after 3-4 operation, energy storage lever can drivening rod 44 action, and drivening rod 33 and connecting rod 22 action further, and pulled open by the moving contact of divide-shut brake executive item 1 by circuit breaker, this illustrates that this state is the "on" position of non-normal table, directly be judged to be that circuit breaker can not reliably close a floodgate.
In addition, handle and energy storage lever coaxial are installed, and such as shown in Figure 1, handle 11 and energy storage lever can be arranged on square shaft 10.
Further, the operating mechanism in order to ensure circuit breaker can perform well stable closing operation, can perform the described detection method of 3-5 time to circuit breaker.
In addition, the present invention also provides a kind of circuit breaker operation mechanism that can realize detection method described above, comprises handle 11 and energy storage lever 19, and link setting mutually; Linkage, can action under the drive of energy storage lever; Energy-stored spring 5, can be compressed to drive energy storage lever 19 action by linkage; Divide-shut brake executive item 1, can realize divide-shut brake under the drive of linkage.
Further, as shown in Figure 2, described bar linkage structure comprises connecting rod 22, connecting rod 33 and connecting rod 44, wherein, connecting rod two is connected with divide-shut brake executive item 1, and connecting rod three and connecting rod two coordinate, connecting rod four is connected with connecting rod three, and connecting rod four can action under the drive of energy storage lever.
In addition, connecting rod 22 can coordinate with semiaxis 6, connecting rod 33 and then being matched by ball with connecting rod 22.
Further, handle and energy storage lever coaxial are installed, and such as can be arranged on square shaft 10, square shaft 10 is then arranged between left plate 7 and right plate 8.
In addition, the energy storage that described operating mechanism also comprises for showing whether energy storage is released and can be marked 13, divide-shut brake executive item 1 is then connected with tripping spring 16, with when mechanism's separating brake, at contact pressure, tripping spring is by under the effect of electrodynamic repulsion force, and the counter-rotational trend of moving contact, after semiaxis 6 is threaded off under release effect, push rod 15 will rotate clockwise, as shown in Figure 3, like this, connecting rod 44 will rotate clockwise around Oa, Ob point moves down, after Oc point is in the top of Od and Ob line, mechanism's accelerated motion, until circuit breaker is in stable state.
In addition, as shown in Figure 1, handle 11 is arranged on square shaft 10 by gear 14, connecting rod 44 is then connected with the return spring making it reset.
This detection method of the present invention can utilize some parts of circuit breaker self to detect the mechanical property of circuit breaker operation mechanism well, and do not need outside special checkout equipment, and can implement to detect circuit breaker at any time without the mechanical property under environment, different running status, thus guarantee that circuit breaker can carry out well stable breaking-closing operating.
Obviously, above-described embodiment is only for clearly example being described, the restriction not to execution mode.Concerning those of ordinary skill in the field, also can make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (10)
1. a detection method for circuit breaker operation mechanism mechanical property, described operating mechanism comprises
Handle and energy storage lever, link setting mutually;
Linkage, can action under the drive of energy storage lever;
Energy-stored spring, can be compressed to drive energy storage lever action by linkage;
Divide-shut brake executive item, can realize divide-shut brake under the drive of linkage;
It is characterized in that, described detection method comprises
Energy storage step, energy storage lever action, drivening rod mechanism action, to make energy-stored spring be in compressive state, to complete energy storage;
Combined floodgate step, energy-stored spring drives energy storage lever action, the action of energy storage lever drives linkage, and linkage drives the action of divide-shut brake executive item, makes the moving contact of circuit breaker be in "on" position;
Detecting step, operating grip drives energy storage lever action, and whether drive the action of divide-shut brake executive item to detect linkage, if divide-shut brake executive item is failure to actuate, then circuit breaker is in stable "on" position; If the action of divide-shut brake executive item, then circuit breaker is in astable "on" position.
2. the detection method of circuit breaker operation mechanism mechanical property according to claim 1, is characterized in that, in detecting step, carries out multi-pass operation to handle.
3. the detection method of circuit breaker operation mechanism mechanical property according to claim 1 and 2, it is characterized in that, described linkage comprises connecting rod two, connecting rod three and connecting rod four, wherein, connecting rod two is connected with divide-shut brake executive item, connecting rod three and connecting rod two coordinate, and connecting rod four is connected with connecting rod three, and connecting rod four can action under the drive of energy storage lever.
4. the detection method of circuit breaker operation mechanism mechanical property according to claim 3, is characterized in that, in detecting step, and the action of energy storage lever drives connecting rod four, connecting rod three and connecting rod two are failure to actuate; Or be,
Energy storage lever drives connecting rod four, connecting rod three action together with connecting rod two, drive the action of divide-shut brake executive item further, and pulled open by the moving contact of circuit breaker.
5. the detection method of circuit breaker operation mechanism mechanical property according to claim 1, is characterized in that, handle and energy storage lever coaxial are installed.
6. the detection method of the circuit breaker operation mechanism mechanical property according to claim 1,2,4 or 5, is characterized in that, circuit breaker is performed to the described detection method of 3-5 time.
7. realize a circuit breaker operation mechanism for detection method described in above-mentioned any one claim, it is characterized in that, comprise
Handle and energy storage lever, link setting mutually;
Linkage, can action under the drive of energy storage lever;
Energy-stored spring, can be compressed to drive energy storage lever action by linkage;
Divide-shut brake executive item, can realize divide-shut brake under the drive of linkage.
8. circuit breaker operation mechanism according to claim 7, it is characterized in that, described linkage comprises connecting rod two, connecting rod three and connecting rod four, wherein, connecting rod two is connected with divide-shut brake executive item, connecting rod three and connecting rod two coordinate, and connecting rod four is connected with connecting rod three, and connecting rod four can action under the drive of energy storage lever.
9. circuit breaker operation mechanism according to claim 8, is characterized in that, connecting rod three and connecting rod two are matched by ball.
10. the circuit breaker operation mechanism according to any one of claim 7-9, is characterized in that, handle and energy storage lever coaxial are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618643.8A CN103594294B (en) | 2013-11-28 | 2013-11-28 | The detection method of circuit breaker operation mechanism mechanical property and circuit breaker operation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618643.8A CN103594294B (en) | 2013-11-28 | 2013-11-28 | The detection method of circuit breaker operation mechanism mechanical property and circuit breaker operation mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103594294A CN103594294A (en) | 2014-02-19 |
| CN103594294B true CN103594294B (en) | 2015-09-23 |
Family
ID=50084388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310618643.8A Active CN103594294B (en) | 2013-11-28 | 2013-11-28 | The detection method of circuit breaker operation mechanism mechanical property and circuit breaker operation mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103594294B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137346B (en) * | 2015-10-08 | 2017-10-31 | 广东电网有限责任公司东莞供电局 | High-voltage switch class equipment divide-shut brake in place monitoring system based on gravity |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2589626B1 (en) * | 1985-10-31 | 1989-03-03 | Merlin Gerin | CONTROL MECHANISM OF A CIRCUIT BREAKER EQUIPPED WITH AN ENERGY ACCUMULATING SYSTEM |
| FR2837619B1 (en) * | 2002-03-22 | 2004-06-25 | Schneider Electric Ind Sa | HIGH-SPEED LIMIT SWITCHING ELECTRICAL APPARATUS |
| CN201335876Y (en) * | 2008-12-23 | 2009-10-28 | 上海德力西集团有限公司 | Detection device for electrical characteristics of circuit breaker based on DSP |
| CN101515520B (en) * | 2009-03-23 | 2012-05-30 | 上海南华兰陵电气有限公司 | Intelligent self-diagnosis medium-pressure vacuum circuit breaker |
| CN202066680U (en) * | 2011-05-06 | 2011-12-07 | 厦门Abb开关有限公司 | On-line monitoring device for mechanical properties of vacuum circuit breaker |
| CN102384768A (en) * | 2011-11-22 | 2012-03-21 | 广东电网公司电力科学研究院 | On-line measuring method of circuit breaker and device thereof |
| CN102646545A (en) * | 2012-04-27 | 2012-08-22 | 正泰电气股份有限公司 | Medium-voltage circuit breaker for online monitoring of mechanical characteristics |
-
2013
- 2013-11-28 CN CN201310618643.8A patent/CN103594294B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103594294A (en) | 2014-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203825164U (en) | Detection platform for DC circuit breaker | |
| CN103681031B (en) | The interlock of change over switch | |
| CN102646545A (en) | Medium-voltage circuit breaker for online monitoring of mechanical characteristics | |
| CN105715139B (en) | A kind of platform door controller of full redundancy control | |
| WO2020192220A1 (en) | Gis driven by only motors | |
| CN106971874A (en) | A kind of change-over switch | |
| CN103594294B (en) | The detection method of circuit breaker operation mechanism mechanical property and circuit breaker operation mechanism | |
| CN205384997U (en) | Modular trip gear | |
| CN205159204U (en) | Indoor high -voltage vacuum circuit breaker spring operating mechanism | |
| CN103378652B (en) | Intelligent control method of electrified operation mechanism of high-voltage switch | |
| CN103245496B (en) | The detection method of breaker mechanic property | |
| CN104483116B (en) | A kind of on-Line Monitor Device and method applied on intelligent ring main unit | |
| CN202018934U (en) | Selective protection switch operating mechanism | |
| CN203552970U (en) | Linked limiting device used for auxiliary switch | |
| CN102386675B (en) | Automatic changeover switch | |
| CN201716178U (en) | Mechanical running-in device for alternating-current high-voltage switches | |
| CN207834220U (en) | Auxiliary switch and switching device component | |
| CN204255629U (en) | A kind ofly be applied in Intelligent ring network on-Line Monitor Device cashier's office in a shop | |
| CN204332875U (en) | A kind of circuit breaker failure resetting device | |
| CN202650951U (en) | Medium-voltage circuit breaker having mechanical characteristic on-line monitoring function | |
| CN204269353U (en) | A kind ofly be applied in Intelligent ring network on-Line Monitor Device cashier's office in a shop | |
| CN205876025U (en) | Full redundant control's platform door controller | |
| CN205004253U (en) | Non -maintaining vacuum circuit breaker operating device | |
| CN100483598C (en) | Rapid tripping apparatus for current limiting of breaker | |
| CN205264650U (en) | Circuit breaker anti -bouncing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170622 Address after: 325604, Yueqing, Zhejiang province Liushi town wide industrial zone Patentee after: Zhejiang People Electrical Appliance Co., Ltd. Address before: 325604 Zhejiang City, Wenzhou province Yueqing Town Station Road, No. 555 people's Industrial Park, No. Patentee before: People Electrical Appliances Group Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180419 Address after: 325604 Zhejiang Yueqing Economic Development Zone (Liushi people's Industrial Park) Patentee after: People Electrical Appliances Group Co., Ltd. Address before: 325604, Yueqing, Zhejiang province Liushi town wide industrial zone Patentee before: Zhejiang People Electrical Appliance Co., Ltd. |
|
| TR01 | Transfer of patent right |