CN112750646A - Novel high-voltage isolating switch for railway - Google Patents
Novel high-voltage isolating switch for railway Download PDFInfo
- Publication number
- CN112750646A CN112750646A CN202011579136.4A CN202011579136A CN112750646A CN 112750646 A CN112750646 A CN 112750646A CN 202011579136 A CN202011579136 A CN 202011579136A CN 112750646 A CN112750646 A CN 112750646A
- Authority
- CN
- China
- Prior art keywords
- assembly
- switch
- insulator
- knife
- rocker arm
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The invention discloses a novel high-voltage isolating switch for railways, which comprises an incoming and outgoing line seat assembly B, a base assembly, an operating insulator assembly, an incoming and outgoing line seat assembly A and a knife switch assembly, wherein one end of the knife switch assembly with a rotating shaft is arranged on the incoming and outgoing line seat assembly A with a rotating seat, and a contact finger of the knife switch assembly is contacted with the incoming and outgoing line seat assembly A; the wire inlet and outlet seat assembly A is installed on a post insulator, the post insulator is installed on a base, a transmission shaft on the base is connected with a switch blade assembly through a rocker arm and a pull rod insulator, the transmission shaft drives the rocker arm to rotate, and the rocker arm drives the pull rod insulator to pull and push the switch blade assembly to achieve the switching-on and switching-off action of a switch. The invention has the beneficial effects that: this isolator leads to the lower problem of isolator life seriously because of the plug-in strip wearing and tearing when solving traditional isolator divide-shut brake, and this novel isolator makes isolator life-span reach traditional isolator more than 3 times through new plug-in strip structure.
Description
Technical Field
The invention belongs to the technical field of electrical equipment, and particularly relates to a novel high-voltage isolating switch for a railway. By adopting the novel conductive structure, the reliability of the switch is improved, the number of maintenance times in the middle is reduced, the service life is prolonged, the safety of a railway power grid is improved, the safety of a railway line is ensured, and further the running safety of a train and the life and property safety of people are ensured.
Background
When a traditional high-voltage isolating switch for a railway is used, the switch blade is seriously abraded when being switched on and switched off, the resistance at the joint of the switch blade and the wire inlet and outlet seat is increased, then the switch blade is seriously ablated, the reliability of the isolating switch is reduced, the number of times of intermediate maintenance is increased, and the service life of the isolating switch is shortened.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a novel high-voltage isolating switch for a railway, which solves the problem that the traditional high-voltage isolating switch for the railway has more intermediate maintenance times and maintenance cost due to serious abrasion of a switch blade when the switch is switched on and switched off.
In order to achieve the purpose, the invention adopts the technical scheme that: a novel high-voltage isolating switch for railways comprises: the wire inlet and outlet seat assembly comprises an insulator matching plate, a semicircular fixed contact, a rotating shaft fixed seat and a wire outlet seat, the wire inlet and outlet seat assembly B comprises an insulator matching plate, a semicircular fixed contact, a rotating shaft fixed seat and a wire outlet seat, the base assembly comprises a post insulator, a transmission shaft, a rocker arm and a base, the operating insulator assembly comprises a pull rod insulator, a connecting rod support and a stud, the knife switch assembly comprises a conductive knife spacing column, a limiting block, a rain cover, a U-shaped joint, a conductive knife, a contact finger, a spring, a knife switch rotating shaft and a high-abrasion-resistant shaft sleeve, one end of the knife switch rotating shaft is installed on the wire inlet and outlet seat assembly A with a rotating seat, and the knife switch contact finger is in contact with the wire inlet and outlet seat assembly A; the wire inlet and outlet seat assembly A is arranged on a post insulator, and the post insulator is arranged on a base; the transmission shaft on the base is assembled and connected with the knife switch through a rocker arm and a pull rod insulator; the transmission shaft drives the rocker arm to rotate, and the rocker arm drives the pull rod insulator to pull and push the switch blade assembly to realize the opening and closing actions of the switch.
The switch blade assembly is arranged on the wire inlet and outlet seat assembly A, the wire inlet and outlet seat assembly B and the wire inlet and outlet seat assembly A are respectively arranged on the porcelain pillar insulator, the switch blade assembly is provided with a plurality of groups of contact fingers, the wire inlet and outlet seat assembly A is provided with a semicircular fixed contact and a rotating shaft fixed seat, and a closing contact finger is always in contact with the semicircular fixed contact on the wire inlet and outlet seat assembly A; the operating insulator assembly is connected with a transmission shaft through a rocker arm, and the transmission shaft is arranged on the base assembly; the transmission shaft rotates to drive the rocker arm to rotate, and then the pull rod insulator is driven to pull and push the switch blade assembly to realize the opening and closing actions of the switch; the contact finger is provided with a rectangular pipe limiting block for limiting when switching on, the limiting block clings to the top end of a semicircular fixed contact on the wire inlet and outlet base assembly B when the isolating switch is switched on in place, and meanwhile, the rocker arm is provided with a limiting bolt for switching on, and the length of the limiting bolt can be adjusted to finely adjust the switching-on position.
The conductive knife is provided with a plurality of sets of contact fingers with springs.
And the gap between the two semicircular fixed contacts on the wire inlet and outlet seat assembly A and the wire inlet and outlet seat assembly B is 3-5 mm.
The high-abrasion-resistance shaft sleeve is arranged between the knife switch rotating shaft and the rotating shaft fixing seat.
The contact finger is made of T2Y2 pure copper wear-resistant material.
The switch blade component is formed by connecting two silver-plated copper bars through stainless steel spacing columns, threaded holes are formed in two ends of each stainless steel column, and the two copper bars are fastened by screwing threads.
The knife switch component is provided with a U-shaped joint.
Rain-proof cover is installed on the upper portion of the contact finger.
The contact finger is provided with a closing limiting block, the rocker arm is provided with a closing limiting bolt, and the length of the limiting bolt is adjustable.
The invention has the beneficial effects that: the method has the advantages that various modes capable of prolonging the service life of the high-voltage isolating switch are adopted, and the problems that the traditional high-voltage isolating switch knife for the railway is seriously worn, the intermediate maintenance times are too many, and the service life is short can be effectively solved.
Drawings
FIG. 1 is a schematic structural diagram of a novel railway high-voltage isolating switch according to the invention;
FIG. 2 is a schematic structural diagram of a novel railway high-voltage isolating switch blade according to the invention;
FIG. 3 is a limit structure diagram of a switching-on rocker arm of the novel high-voltage isolating switch for railways;
fig. 4 is an assembly structure view of a novel railway high-voltage isolating switch wire inlet and outlet seat.
In the figure:
1. business turn over line seat equipment B2, post insulator
3. Base assembly 4 and operating insulator assembly
5. Pull rod insulator 6 and transmission shaft
7. Rocker arm 8 and connecting rod support
8. Base 10, business turn over line seat equipment A
11. Stud M16X 9012 and knife switch assembly
13. Conductive knife spacing post 14 and limiting block
15. Rain cover 16, U type connect
17. Conductive knife 18, contact finger
19. Spring 20, knife switch pivot
21. High wear-resistant shaft sleeve 22 and limiting bolt
23. Insulator matching plate 24 and semicircular fixed contact
25. Rotating shaft fixing seat 26 and wire outlet seat
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
the invention aims to solve the problems that a switch blade and an incoming and outgoing line seat are seriously abraded when a high-voltage isolating switch for a railway is switched on and switched off, so that the switch has excessive intermediate maintenance times and excessive maintenance cost, and the service life of the switch is short.
Examples
As shown in fig. 1 to 3, a novel high-voltage isolating switch for railways includes an inlet and outlet wire seat assembly B1, a base assembly 3, an operating insulator assembly 4, an inlet and outlet wire seat assembly a10, and a knife assembly 12, wherein the knife assembly 12 with multiple groups of contact fingers 18 is installed on the inlet and outlet wire seat assembly a10 with two semicircular fixed contacts 24 and a rotating shaft fixed seat 25 at one side with the rotating shaft fixed seat 25, and the semicircular fixed contacts 24 on the inlet and outlet wire seat assembly a are always in contact with each other no matter whether the switch is opened or closed, so that reliable connection is ensured. The inlet and outlet block assembly a10 is mounted on the porcelain post insulator 2. And the wire inlet and outlet seat assembly B1 with two semicircular fixed contacts 24 on the other side is arranged on the porcelain post insulator 2. The knife assembly 12 is connected with the pull rod insulator 5 through a U-shaped joint 16, and the assembly 4 with the operating insulator is connected with the transmission shaft 6 of the base assembly 3 through a rocker arm 7. The transmission shaft 6 rotates to drive the rocker arm 7 to rotate, and the rocker arm 7 further drives the pull rod insulator 5 to pull and push the knife assembly 12 to realize the opening and closing actions of the isolating switch.
As shown in fig. 2, the contact area between the isolated blade assembly 12 with multiple sets of contact fingers 18 and two longer semi-circular stationary contacts 24 can be increased as a way of reducing blade wear by increasing the contact area between the conductive blade 17 and the semi-circular stationary contacts 24. The fingers 18 are made of T2Y2 material, which has higher wear resistance than conventional pure copper material, as another way to reduce wear. The knife switch assembly 12 is provided with another wear-resistant mode between the high-wear-resistant shaft sleeve 21 between one side of the knife switch rotating shaft 20 and the rotating shaft fixing seat 25.
As shown in fig. 2 and 3, a rectangular tube is arranged on the contact finger 18 of the knife assembly 12 to serve as a closing limiting block 14, and when the switch is closed to a proper position, the limiting block 14 is tightly attached to the top end of a semicircular fixed contact 24 on the wire inlet and outlet base. Meanwhile, a closing limiting bolt 22 is arranged on the rocker arm 7, and the length of the limiting bolt 22 can be adjusted to finely adjust the closing position, so that reliable closing is guaranteed.
As shown in fig. 4, the contact finger 18 is provided with a spring 19 to increase the clamping force with the inlet and outlet base assembly B1 to ensure the reliability of the opening and closing contact. Meanwhile, a gap of about 4mm is reserved between the two semicircular fixed contacts 24 of the wire inlet and outlet seat, and when the knife switch assembly 12 is switched on, the semicircular fixed contacts 24 are pressed tightly, so that the gap is reduced, and the clamping force between the blade switch assembly 12 and the gap can be increased.
The invention aims to solve the problems that a switch blade and a wire inlet and outlet seat are seriously abraded when a high-voltage isolating switch for a railway is switched on and switched off, so that the switch has excessive intermediate maintenance times and excessive maintenance cost, and the service life of the switch is short.
Claims (10)
1. A novel high-voltage isolating switch for railways comprises: business turn over line seat equipment B (1), base equipment (3), operation insulator equipment (4), business turn over line seat equipment A (10), plug-in strip subassembly (12), business turn over line seat equipment A (10) include insulator cooperation board (23), semicircle static contact (24), pivot fixing base (23), play line seat (26), characterized by: the wire inlet and outlet seat assembly B (1) comprises an insulator matching plate (21), a semicircular fixed contact (24) and a wire outlet seat (26), the base assembly (3) comprises a post insulator (2), a transmission shaft (6), a rocker arm (7) and a base (9), the operating insulator assembly (4) comprises a pull rod insulator (5), a connecting rod support (8) and a stud (11), the switch knife group (12) comprises a conductive knife spacing column (13), a limiting block (14), a rain cover (15), a U-shaped joint (16), a conductive knife (17), a contact finger (18), a spring (19), a switch knife rotating shaft (20) and a high-abrasion-resistant shaft sleeve (21), one end of the switch knife rotating shaft is mounted on the wire inlet and outlet seat assembly A (10) with a rotating seat, and the switch knife contact finger (18) is in contact with the wire inlet and outlet seat assembly A (10); the wire inlet and outlet seat assembly A (10) is arranged on a post insulator (2), and the post insulator (2) is arranged on a base (9); a transmission shaft (6) on the base (9) is connected with a knife switch assembly (12) through a rocker arm (7) and a pull rod insulator (5); the transmission shaft (6) drives the rocker arm (7) to rotate, and the rocker arm (7) drives the pull rod insulator (5) to pull and push the switch blade assembly (12) to realize the opening and closing actions of the switch.
2. The novel high-voltage isolating switch for the railway as claimed in claim 1, wherein: the switch blade assembly (12) is arranged on the wire inlet and outlet seat assembly A (10), the wire inlet and outlet seat assembly B (1) and the wire inlet and outlet seat assembly A (10) are respectively arranged on the porcelain post insulator (2), the switch blade assembly (12) is provided with a plurality of groups of contact fingers (18), the wire inlet and outlet seat assembly A (10) is provided with a semicircular fixed contact (24) and a rotating shaft fixed seat (25), and the closing contact fingers (18) are always in contact with the semicircular fixed contact (24) on the wire inlet and outlet seat assembly A (10); the operating insulator assembly (4) is connected with the transmission shaft (6) through the rocker arm (7), and the transmission shaft (6) is installed on the base assembly (3); the transmission shaft (6) rotates to drive the rocker arm (7) to rotate, and further drives the pull rod insulator (5) to pull and push the knife assembly (12) to realize the opening and closing actions of the switch; the contact finger (18) is provided with a rectangular pipe limiting block (14) for limiting when switching-on is performed, the limiting block (14) clings to the top end of a semicircular fixed contact (24) on the incoming and outgoing line seat assembly B (1) when the isolating switch is switched-on in place, meanwhile, a switching-on limiting bolt (22) is arranged on the rocker arm (7), and the length of the limiting bolt (22) can be adjusted to finely adjust the switching-on position.
3. The novel high-voltage isolating switch for the railway as claimed in claim 1, wherein: the conductive knife (17) is provided with a plurality of sets of contact fingers (18) with springs (19).
4. The novel high-voltage isolating switch for the railway as claimed in claim 1, wherein: and the gap between two semicircular fixed contacts (24) on the wire inlet and outlet seat assembly A (10) and the wire inlet and outlet seat assembly B (1) is 3-5 mm.
5. The novel high-voltage isolating switch for the railway as claimed in claim 1, wherein: the high abrasion-resistant shaft sleeve (21) is arranged between the knife switch rotating shaft (20) and the rotating shaft fixing seat (25).
6. The novel high-voltage isolating switch for the railway as claimed in claim 1, wherein: the contact finger (18) is made of T2Y2 pure copper wear-resistant material.
7. The novel high-voltage isolating switch for the railway as claimed in claim 1, wherein: the switch blade component (12) is formed by connecting two silver-plated copper bars through stainless steel spacing columns, threaded holes are formed in two ends of each stainless steel column, and the two copper bars are fastened by screwing threads.
8. The novel high-voltage isolating switch for the railway as claimed in claim 7, wherein: the knife switch component (12) is provided with a U-shaped joint (16).
9. The novel high-voltage isolating switch for the railway as claimed in claim 1, wherein: rain-proof cover is installed on the upper portion of the contact finger (18).
10. The novel high-voltage isolating switch for the railway as claimed in claim 1, wherein: the contact finger (18) is provided with a closing limiting block (14), the rocker arm (7) is provided with a closing limiting bolt (22), and the length of the limiting bolt (22) is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579136.4A CN112750646A (en) | 2020-12-28 | 2020-12-28 | Novel high-voltage isolating switch for railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579136.4A CN112750646A (en) | 2020-12-28 | 2020-12-28 | Novel high-voltage isolating switch for railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112750646A true CN112750646A (en) | 2021-05-04 |
Family
ID=75646334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011579136.4A Pending CN112750646A (en) | 2020-12-28 | 2020-12-28 | Novel high-voltage isolating switch for railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112750646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114360958A (en) * | 2022-01-14 | 2022-04-15 | 上海盖尔电力安装有限公司 | Novel high-voltage isolating switch device |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075028A (en) * | 1992-01-31 | 1993-08-04 | 刘刚 | Transformer tap switch with wearless contact piece |
| CN2881930Y (en) * | 2004-02-02 | 2007-03-21 | 范高潮 | Outdoor high-voltage isolating switch |
| CN2893898Y (en) * | 2005-11-25 | 2007-04-25 | 阎淼江 | High voltage isolated switch contact assembly |
| CN201167057Y (en) * | 2008-03-21 | 2008-12-17 | 德雷希尔(西安)电气有限公司 | Tri-pillar type vertical deciliter isolation switch |
| CN201868299U (en) * | 2010-12-01 | 2011-06-15 | 川铁电气（天津）集团有限公司 | Outdoor AC high-voltage isolating switch |
| CN202339874U (en) * | 2011-12-07 | 2012-07-18 | 川铁电气（天津）集团有限公司 | Indoor high-voltage isolating automatic grounding switch |
| CN203103205U (en) * | 2012-12-19 | 2013-07-31 | 川铁电气（天津）集团有限公司 | 1500V direct current isolating switch |
| CN204289203U (en) * | 2014-12-01 | 2015-04-22 | 川铁电气（天津）集团有限公司 | Isolating switch is operated cloudy knife system |
| CN105810490A (en) * | 2016-04-18 | 2016-07-27 | 贵州电网有限责任公司安顺供电局 | Isolation switch capable of on-live contact replacement and special tool for contact replacement |
| CN206225273U (en) * | 2016-11-30 | 2017-06-06 | 中铁二院工程集团有限责任公司 | The urban transportation high-reliability isolating switch |
| CN206225267U (en) * | 2016-11-09 | 2017-06-06 | 斯第华电气(天津)有限公司 | Disconnecting switch containing insulated tension pole component |
| CN208690156U (en) * | 2018-09-30 | 2019-04-02 | 贵州电网有限责任公司 | A kind of disconnecting switch moving contact |
| CN111161975A (en) * | 2020-02-13 | 2020-05-15 | 北京煜能电气有限公司 | Isolating switch and control method and control device thereof |
| CN111489911A (en) * | 2020-04-09 | 2020-08-04 | 陕西省地方电力(集团)有限公司延安供电分公司 | Anti-overheating and anti-corrosion high-voltage alternating-current isolating switch |
-
2020
- 2020-12-28 CN CN202011579136.4A patent/CN112750646A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075028A (en) * | 1992-01-31 | 1993-08-04 | 刘刚 | Transformer tap switch with wearless contact piece |
| CN2881930Y (en) * | 2004-02-02 | 2007-03-21 | 范高潮 | Outdoor high-voltage isolating switch |
| CN2893898Y (en) * | 2005-11-25 | 2007-04-25 | 阎淼江 | High voltage isolated switch contact assembly |
| CN201167057Y (en) * | 2008-03-21 | 2008-12-17 | 德雷希尔(西安)电气有限公司 | Tri-pillar type vertical deciliter isolation switch |
| CN201868299U (en) * | 2010-12-01 | 2011-06-15 | 川铁电气（天津）集团有限公司 | Outdoor AC high-voltage isolating switch |
| CN202339874U (en) * | 2011-12-07 | 2012-07-18 | 川铁电气（天津）集团有限公司 | Indoor high-voltage isolating automatic grounding switch |
| CN203103205U (en) * | 2012-12-19 | 2013-07-31 | 川铁电气（天津）集团有限公司 | 1500V direct current isolating switch |
| CN204289203U (en) * | 2014-12-01 | 2015-04-22 | 川铁电气（天津）集团有限公司 | Isolating switch is operated cloudy knife system |
| CN105810490A (en) * | 2016-04-18 | 2016-07-27 | 贵州电网有限责任公司安顺供电局 | Isolation switch capable of on-live contact replacement and special tool for contact replacement |
| CN206225267U (en) * | 2016-11-09 | 2017-06-06 | 斯第华电气(天津)有限公司 | Disconnecting switch containing insulated tension pole component |
| CN206225273U (en) * | 2016-11-30 | 2017-06-06 | 中铁二院工程集团有限责任公司 | The urban transportation high-reliability isolating switch |
| CN208690156U (en) * | 2018-09-30 | 2019-04-02 | 贵州电网有限责任公司 | A kind of disconnecting switch moving contact |
| CN111161975A (en) * | 2020-02-13 | 2020-05-15 | 北京煜能电气有限公司 | Isolating switch and control method and control device thereof |
| CN111489911A (en) * | 2020-04-09 | 2020-08-04 | 陕西省地方电力(集团)有限公司延安供电分公司 | Anti-overheating and anti-corrosion high-voltage alternating-current isolating switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114360958A (en) * | 2022-01-14 | 2022-04-15 | 上海盖尔电力安装有限公司 | Novel high-voltage isolating switch device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102592906B (en) | Medium-pressure and high-capacity DC circuit breaker contact terminal system for improving short time endurance capability | |
| CN201893269U (en) | High-voltage disconnector contact component | |
| CN206806206U (en) | Arc extinguishing system of circuit breaker | |
| CN107359068A (en) | A kind of breaker of plastic casing with compound arc extinction performance | |
| CN102436975B (en) | Bipolar DC contactor | |
| CN112750646A (en) | Novel high-voltage isolating switch for railway | |
| CN118136440B (en) | High-voltage isolating switch and power distribution cabinet | |
| CN209169042U (en) | A kind of switch spindle transmission device | |
| CN210325620U (en) | Outdoor high-voltage isolating switch | |
| CN203553032U (en) | Outdoor vacuum circuit breaker used for electrified railway traction system | |
| CN103000465B (en) | Contact system of novel high-capacity medium-voltage direct current breaker | |
| CN2788337Y (en) | High-voltage sulfur hexafluoride circuit breaker | |
| CN214797232U (en) | High-voltage large-current conversion switch | |
| CN201163588Y (en) | Three-column horizontal rotation type isolation switch | |
| CN212648114U (en) | Isolator based on flexible coupling and electrodynamic force effect | |
| CN220585080U (en) | Alternating-current metal ring network switch equipment | |
| CN107393777A (en) | A kind of breaker of plastic casing with high breaking performance | |
| CN2746509Y (en) | Overtravel spring combiner for outdoor AC high-voltage vacuum circuit breaker | |
| CN207302929U (en) | A kind of breaker of plastic casing with compound arc extinction performance | |
| CN207303020U (en) | A kind of high breaking moulded case circuit breaker arc-control device | |
| CN2574207Y (en) | Outdoor combined load isolation switch | |
| CN2781558Y (en) | Horizontal upside-down mounted fuse for outdoor DC high voltage | |
| CN112786340B (en) | High-voltage outdoor isolating switch contact | |
| CN208861926U (en) | The operating mechanism of wind-powered electricity generation vacuum load switch-fuse combined electrical equipment | |
| CN113299515B (en) | High-voltage high-current converter switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210504 |
|
| WD01 | Invention patent application deemed withdrawn after publication |