CN102306911A - Emergency opening/closing operation mechanism of high-voltage switch equipment - Google Patents
Emergency opening/closing operation mechanism of high-voltage switch equipment Download PDFInfo
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- CN102306911A CN102306911A CN201110236387A CN201110236387A CN102306911A CN 102306911 A CN102306911 A CN 102306911A CN 201110236387 A CN201110236387 A CN 201110236387A CN 201110236387 A CN201110236387 A CN 201110236387A CN 102306911 A CN102306911 A CN 102306911A
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Abstract
The invention relates to an emergency opening/closing operation mechanism of high-voltage switch equipment, comprising an opening button, a control button and a closing button on a supporting plate, wherein the control button is connected with a dialing plate; an upper revolving supporting plate is hinged with the supporting plate; an upper revolving shaft is provided with a torsional spring; an upper push rod sleeved with a spring is arranged on an upper end plate of the upper revolving supporting plate and an upper clapboard; when the upper push rod and the opening button are in the same axis, two ends of the upper push rod correspond to the opening button and an opening switch on a breaker panel respectively; a lower revolving supporting plate is hinged with the supporting plate; a lower revolving shaft is provided with a torsional spring; a lower stop pin fixed on the lower revolving shaft corresponds to a lower dialing plate of the dialing plate; a lower push rod sleeved with a spring is arranged on a lower end plate of the lower revolving supporting plate and a lower clapboard; and when the lower push rod and the closing button are in the same axis, two ends of the lower push rod correspond to the closing button and a closing switch on the breaker panel respectively. The emergency opening/closing operation mechanism has a reasonable structure, can completely solve the problem of wrongly touching the opening/closing buttons, and can improve the operation safety.
Description
Technical field
The present invention relates to the urgent breaking-closing operating of a kind of high voltage switchgear mechanism, belong to withdraw-type switching device technical field.
Background technology
High-tension switch cabinet is made up of control room, breaker chamber, bus-bar room and cable vault usually, and the chamber internal fixation of breaker chamber has one group of stationary contact headstock as static contact head device, connecting with extraneous high-voltage power circuit into and out of the line fixed contact on the stationary contact headstock.When the circuit breaker chassis pushed in the breaker chamber, the upper and lower contact of circuit breaker cart engaged respectively with into and out of the line fixed contact, behind the breaker closing, realized the connection on the circuit.At circuit breaker manual operation handcart advancing mechanism circuit breaker cart is closed a floodgate after test position is pushed into the service position, or behind the separating brake circuit breaker cart is retracted into test position from the service position.And the divide-shut brake of circuit breaker is to control through the divide-shut brake operating mechanism; So the operating mechanism of each circuit breaker all is furnished with urgent divide-shut brake button; Be in an emergency; Make operating personnel need not to open under the prerequisite of cabinet door; Can carry out the breaking-closing operating of circuit breaker; The urgent divide-shut brake button of most circuit breaker is the end plate that switch cubicle is installed, and therefore exists staff's mistake and bumps the accident potential that causes the circuit breaker misoperation.
Like the urgent divide-shut brake device of the disclosed circuit breaker of CN201413946Y; Mainly by lever bracket; The cabinet door bracket; Opening button; Runner; Bearing pin; Switch knob; Closing operation bar stage clip; The closing operation bar; The sub-switching operation bar; Sub-switching operation bar stage clip structure; Lever bracket is hinged on the cabinet door bracket through bearing pin; Runner is fixed on the bearing pin; Be installed on the inner cabinet door bracket of cabinet door and be respectively equipped with switch knob or opening button; And be separately installed with closing operation bar and sub-switching operation bar on the lever bracket; Be sleeved on the both sides, front and back that closing operation bar stage clip and sub-switching operation bar stage clip on closing operation bar and the sub-switching operation bar withstand on lever bracket respectively; Make lever bracket ability half-twist through runner; Make switch knob and opening button corresponding with an end of closing operation bar and sub-switching operation bar; Through operating switch knob or opening button respectively, under the situation that need not open the switchgear cabinet door, just can control the combined floodgate or the sub-switching operation of circuit breaker.But above-mentioned urgent close/open machine is on a lever bracket, to be separately installed with closing operation bar and sub-switching operation bar; When rotating wheel; Lever bracket has only two positions; A position is that the closing operation bar is parallel with the cabinet door with lever bracket rotation back with the sub-switching operation bar; Though can operate switch knob or opening button; Because switch knob or opening button can not be controlled closing operation bar and sub-switching operation bar, therefore can not realize the urgent breaking-closing operating of circuit breaker; When lever bracket is vertical with the cabinet door; Switch knob and opening button simultaneously with closing operation bar and sub-switching operation bar and cabinet door bracket on corresponding; Therefore switch knob or opening button can be operated and closing operation bar or sub-switching operation bar can be controlled; Also because of controlling closing operation bar or sub-switching operation bar simultaneously; Still mistake can occur and bump the knob phenomenon, so there is accident potential.
Summary of the invention
The purpose of this invention is to provide a kind of rational in infrastructurely, can thoroughly solve mistake and bump the divide-shut brake knob, improve the urgent breaking-closing operating of the high voltage switchgear mechanism of processing safety.
The present invention for achieving the above objective technical solution is: A high-voltage switchgear emergency points closing operating mechanism comprising: a control knob, opening buttons, buttons, and closing down the upper plunger and plunger, said opening pushbutton, control knobs and closing button mounted on the carriage plate and the control knob in the OFF button and switch on the button in the middle of the inside of the control knob and dial plate connected to the upper and lower support plate rotates on two plates respectively, through of the axis of the hinge pin and the bracket plate on the shaft, the shaft sleeve on both ends of a torsion spring which rotates with the holder plate and the connection support plate fixed on the upper shaft stop pin on the dial plate lever corresponds to the upper plunger disposed transversely mounted rotatably supported on the upper plate and the upper plate bulkhead, set on both ends of the spring plunger on top of the upper plate and the upper plunger shaft shoulder, upper ejector button on the same axis with the trip, the two ends of the plunger and trip the circuit breaker panel buttons and switches on the corresponding sub-gate; under the rotation of the support plate of the upper and lower plates respectively, through the axis of the shaft and pin down the stent axis hinge plate, the lower cover both ends of the torsion spring on the shaft, respectively, to rotate with the bracket plate and the support plate connected to the lower shaft fixed to the lower stopper pin and the lever corresponding to the dial plate, transversely disposed under the roof rotating lever mounted on the lower support plate bottom plate and a lower bulkhead, set next spring on the ejector top at both ends of the bottom plate and the lower plunger shaft shoulder, lower plunger same axis with the ON button, the next ejector button on both ends with the closing and closing switch on the circuit breaker panel correspond.
The present invention is being hinged with the rotation gripper shoe respectively and is rotating gripper shoe down on the supporting plate; Last rotation gripper shoe is separately installed with upper ejector pin and lower push rod with following rotation gripper shoe; When upper ejector pin and lower push rod during respectively with the opening button and the same axis of switch knob that are installed on the supporting plate; Make the upper ejector pin two ends respectively with opening button and breaker end plate on the separating brake switch corresponding; The two ends of same lower push rod are corresponding with the combined floodgate switch on switch knob and the breaker end plate; Therefore can operate opening button and switch knob respectively; Can distinguish separating brake switch and combined floodgate switch on the operating breaker end plate by upper ejector pin and lower push rod, need not to open the cabinet door and can realize the urgent divide-shut brake of breaker.The present invention respectively controls backing pin and following backing pin by the last driving lever of dialling on the plate with following driving lever by the control turn-knob that is installed on the supporting plate; Make rotation gripper shoe and following rotation gripper shoe turn to the operating position respectively along its hinged center; Therefore going up the rotation of rotation gripper shoe makes upper ejector pin and opening button at once; It rotates gripper shoe down and can not rotate; Therefore lower push rod can be not corresponding with switch knob; Even if mistake is bumped one of them button; Can not make corresponding push rod action yet; Can thoroughly solve mistake and bump the accident potential that the divide-shut brake button causes the breaker misoperation, improve the security of urgent breaking-closing operating.The present invention will go up the rotation supporting bracket, rotate supporting bracket, control handle, opening button and switch knob and dial plate and be installed on the supporting plate down; Compact conformation rationally, does not take space bigger in the cabinet; Have good versatility, be convenient to existing switchgear is improved.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 is the structural representation of the urgent breaking-closing operating of high voltage switchgear of the present invention mechanism.
Fig. 2 is the side-looking structural representation of Fig. 1.
Fig. 3 is the backsight structural representation of Fig. 1.
Fig. 4 is the perspective view of the urgent breaking-closing operating of high voltage switchgear of the present invention mechanism.
Wherein: 1-upper ejector pin, 2-spring, the last rotation of 3-supporting bracket, 3-1-upper head plate, 3-2-upper spacer; The 4-supporting plate, the outer flanging of 4-1-, flanging in the 4-2-, 5-bearing pin; The 6-opening button, the last rotating shaft of 7-, the last backing pin of 8-, 9-dials plate; The last driving lever of 9-1-, driving lever under the 9-2-, 10-control handle, backing pin under the 11-; The 12-lower rotary shaft, 13-switch knob, 14-be the rotation supporting bracket down, the 14-1-bottom plate; The 14-2-lower clapboard, 15-lower push rod, 16-torsion spring, 17-rebound.
Embodiment
See shown in Fig. 1～4; The urgent breaking-closing operating of high voltage switchgear of the present invention mechanism; Comprise control handle 10; Opening button 6; Switch knob 13 and upper ejector pin 1 and lower push rod 15; Opening button 6; Control handle 10 is installed on the supporting plate 4 with switch knob 13; And control handle 10 is arranged on the middle part of opening button 6 and switch knob 13; Opening button 6; The operation part of control handle 10 and switch knob 13 is arranged on the outside of supporting plate 4; Other part is arranged in the cabinet; The inboard of control handle 10 is connected with group plate 9; Through counterclockwise or the control handle 10 that turns clockwise, drive dial plate 9 together counterclockwise or dextrorotation then stir rotation supporting bracket 3 or down rotation supporting bracket 14 move.See shown in Fig. 1～4; Two connecting plates up and down of the last rotation of the present invention supporting bracket 3 are hinged on the supporting plate 4 with last rotating shaft 7 through the bearing pin 5 of coaxial line respectively; Promptly be hinged on the outer flanging 4-1 and interior flanging 4-2 on supporting plate 4 tops; This bearing pin 5 can be fixed on two connecting plates up and down of rotation supporting bracket 3 with last rotating shaft 7; And bearing pin 5 makes rotation supporting bracket 3 hinged with supporting plate 4 with outer flanging 4-1 and interior flanging 4-2 that supporting plate 4 is passed in last rotating shaft 7, on rotate supporting bracket 3 along bearing pin 5 and last rotating shaft 7 hinged central axis rotations.The present invention has mechanical strength preferably for making rotation gripper shoe 3; Two connecting plates up and down that last rotation gripper shoe 3 is made up of two side edgefolds up and down and the upper head plate 3-1 of front portion and the upper spacer 3-2 at middle part constitute; Torsion spring 16 its two ends that are enclosed within the rotating shaft 7 are connected with last rotation gripper shoe 3 with supporting plate 4 respectively; Rotation gripper shoe 3, external force can be resetted under the effect of torsion spring 16 after disappearing; The last backing pin 8 that is fixed in the rotating shaft 7 is corresponding with the last driving lever 9-1 that dials plate 9; Last driving lever 9-1 by dialling on the plate 9 stirs backing pin 8 drives upward rotating shaft 7 and upward rotation gripper shoe 3 rotations; The upper ejector pin 1 of horizontally set is installed on the upper head plate 3-1 and upper spacer 3-2 of rotation gripper shoe 3; Spring 2 two ends that are sleeved on the upper ejector pin 1 withstand on respectively on the shaft shoulder of upper head plate 3-1 and upper ejector pin 1; Upper ejector pin 1 can be moved axially; And upper ejector pin 1 can automatically reset after forces; When upper ejector pin 1 and opening button 6 same axis; The two ends of upper ejector pin 1 are corresponding with separating brake switch on opening button 6 and the breaker end plate; Press opening button 6 this moment; Promote upper ejector pin 1 and press the separating brake switch on the breaker end plate, realize the sub-switching operation of breaker.
See shown in Fig. 1～4; The present invention's two connecting plates up and down of rotation gripper shoe 14 down is hinged on the supporting plate 4 with bearing pin 5 by the lower rotary shaft 12 of coaxial line respectively; Promptly be hinged on the outer flanging 4-1 and interior flanging 4-2 of supporting plate 4 bottoms; Equally; This lower rotary shaft 12 and bearing pin 5 can be fixed on down on two connecting plates up and down that rotate gripper shoe 14 and be hinged with the outer flanging 4-1 and the interior flanging 4-2 of supporting plate 4; Rotation gripper shoe 14 is rotated along bearing pin 5 and lower rotary shaft 12 hinged central axis; For making down rotation gripper shoe 14 have mechanical strength preferably; Two connecting plates up and down that this time rotation gripper shoe 14 is made up of two side edgefolds up and down and the bottom plate 14-1 of front portion and the lower clapboard 14-2 at middle part constitute; Torsion spring 16 its two ends that are enclosed within on the lower rotary shaft 12 are connected with following rotation gripper shoe 14 with supporting plate 4 respectively; Under rotate gripper shoe 14 and do not have under the external force; Under the effect of torsion spring 16, reset; The following backing pin 11 that is fixed on the lower rotary shaft 12 is corresponding with the following driving lever 9-2 that dials plate 9; Stirring down backing pin 11 by the following driving lever 9-2 on group plate 9 makes lower rotary shaft 12 drive rotation gripper shoe 14 rotations down; The lower push rod 15 of horizontally set is installed in down on the bottom plate 14-1 and lower clapboard 14-2 of rotation gripper shoe 14; Spring 2 two ends that are sleeved on the lower push rod 15 withstand on respectively on the shaft shoulder of bottom plate 14-1 and lower push rod 15; Lower push rod 15 can be moved axially; And lower push rod 15 can automatically reset after forces; When lower push rod 15 and switch knob 13 same axis; The two ends of lower push rod 15 are corresponding with combined floodgate switch on switch knob 13 and the breaker end plate; Press switch knob 13 this moment; Promote lower push rod 15 and press the combined floodgate switch on the breaker end plate, realize the closing operation of breaker.See shown in Fig. 2～4; The last driving lever 9-1 that the present invention dials on the plate 9 stirs backing pin 8 and following backing pin 11 respectively with following driving lever 9-2; When control handle 10 drives 9 rotations of group plate; Dial plate 9 and can only allow to stir backing pin 8 or following backing pin 11; And can not stir backing pin 8 and following backing pin 11 simultaneously; So urgent breaking-closing operating is safe and reliable, the present invention dials the last driving lever 9-1 and the setting of following driving lever 9-2 homonymy on the plate 9, is convenient to processing.
See shown in Fig. 1～4; Have outer flanging 4-1 and the interior flanging 4-2 corresponding on the supporting plate 4 of the present invention respectively with last rotation supporting bracket 3 and rotation supporting bracket down 14; The outside at interior flanging 4-1 also is connected with rebound 17; Can adopt securing member to connect, be separately fixed at rotation supporting bracket 3 and pass the rebound 17 on the supporting plate 4 with lower rotary shaft 12 with the last rotating shaft 7 of rotating down on the supporting bracket 14.
See shown in Fig. 1～4; The present invention is outside cabinet during the emergency operation breaker open operation; Be rotated counterclockwise control handle 10; Control handle 10 drives group plate 9 and rotates counterclockwise; Make the last driving lever 9-1 that dials on the plate 9 stir backing pin 8 and upward rotating shaft 7 rotations of drive; Last rotating shaft 7 drives goes up rotation supporting bracket 3 along 90 ° of the rotational of bearing pin 5 and last rotating shaft 7; Make upper ejector pin 1 and opening button 6 same axis; Press opening button 6 this moment; Opening button 6 drives upper ejector pin 1 and moves forward; Upper ejector pin 1 is pressed the separating brake switch on the circuit breaker end plate; Breaker open operation then, this moment switch knob 13 with lower push rod 15 not on same axis, even press switch knob 13; Lower push rod 15 is moved, can only carry out the sub-switching operation of circuit breaker.When operating breaker outside cabinet closes a floodgate; Control handle 10 turns clockwise; Control handle 10 drives dials plate 9 rotations; Make the following driving lever 9-2 that dials on the plate 9 stir down backing pin 11 and 12 rotations of drive lower rotary shaft; Lower rotary shaft 12 drives rotation supporting bracket 14 down along 90 ° of the rotational of bearing pin 5 and lower rotary shaft 12; Lower push rod 15 and switch knob 13 same axis; Press switch knob 13 this moment; Switch knob 13 drives lower push rod 15 and moves forward; Lower push rod 15 is pressed the combined floodgate switch on the circuit breaker end plate; Breaker closing then, this moment opening button 6 with upper ejector pin 1 not on same axis, even press opening button 6; Upper ejector pin 1 is moved; Can only carry out the closing operation of circuit breaker, thoroughly solve mistake and bump the accident potential that divide-shut brake knob 6 causes the circuit breaker misoperation, improve processing safety.
Claims (3)
1 An emergency points closing high voltage switchgear operating mechanism comprising: a control knob (10), opening button (6), closing button (13) and the upper plunger (1) and the lower plunger ( 15), said opening pushbutton (6), the control knob (10) and the ON button (13) mounted on the holder plate (4) on, and the control knob (10) is set in the OFF button (6) and closing button (13) in the middle of the control knob (10) inside the dial plate (9) connected to rotate the support plate (3) of the upper and lower plate respectively, through the axis of the pin (5) and the shaft (7) hinged to the holder plate (4), set in the rotating shaft (7) on the torsion spring (16), respectively, which ends with the bracket plate (4) and the upper rotating support plate (3) is connected, fixed to the upper shaft (7) upper stop pin (8) and the dial plate (9) of the lever (9-1) corresponds to the upper transversely mandril (1) attached to the upper rotating support plate (3) of the upper end plate (3-1 ) and on the partition (3-2), and set the upper plunger (1) of the spring (2), respectively, the top ends of the upper end plate (3-1) and the upper plunger (1) of the shaft shoulder, upper plunger (1) and the sub-gate button (6) the same axis, the upper plunger (1), respectively, and both ends of the sub-gate button (6) and the breaker switch on the front panel of the corresponding gate; rotate the support plate ( 14) of the upper and lower plate respectively, through the axis of the rotary shaft (12) and pin (5) hinged to the holder plate (4), and the lower shaft sleeve (12) on the torsion spring (16) respectively, and both ends of holder plate (4) and the lower rotation support plate (14) is connected, fixed to the lower rotary shaft (12) on the lower stopper pin (11) and the dial plate (9) of the lever (9-2) corresponds to a lower transversely disposed push rod (15) mounted on the lower rotary support plate (14) of the lower end plate (14-1) and the lower partition plate (14-2) on the packages, the lower push rod (15) of the spring (2) two ends of the top in lower end plate (14-1) and the lower plunger (15) of the shaft shoulder, the lower plunger (15) and the closing button (13) the same axis, the lower plunger (15) closing both ends of the push button (13) and closing switch on the circuit breaker panel correspond.
2. the urgent breaking-closing operating of high voltage switchgear according to claim 1 mechanism is characterized in that: last driving lever (9-1) on the said group of plate (9) and the setting of following driving lever (9-2) homonymy.
3. the urgent breaking-closing operating of high voltage switchgear according to claim 1 mechanism; It is characterized in that: described supporting plate (4) has with last rotation supporting bracket (3) respectively and rotates corresponding outer flanging (4-1) and the interior flanging (4-2) of supporting bracket (14) down; And the outside of interior flanging (4-2) also is connected with rebound (17), and the last rotating shaft (7) and the lower rotary shaft (12) that are separately fixed on rotation supporting bracket (3) and the following rotation supporting bracket (14) pass the rebound (17) on the supporting plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110236387.7A CN102306911B (en) | 2011-08-18 | 2011-08-18 | Emergency opening/closing operation mechanism of high-voltage switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110236387.7A CN102306911B (en) | 2011-08-18 | 2011-08-18 | Emergency opening/closing operation mechanism of high-voltage switch equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102306911A true CN102306911A (en) | 2012-01-04 |
| CN102306911B CN102306911B (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110236387.7A Active CN102306911B (en) | 2011-08-18 | 2011-08-18 | Emergency opening/closing operation mechanism of high-voltage switch equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117514A (en) * | 2013-01-24 | 2013-05-22 | 汕头市众业达电器设备有限公司 | Circuit breaker mechanical switch-on and switch-off operating mechanism for high-voltage switch cabinet |
| CN103247457A (en) * | 2013-04-23 | 2013-08-14 | 镇江大全伊顿电器有限公司 | Emergency switching-closing brake gear for switch cabinet |
| CN103413733A (en) * | 2013-08-01 | 2013-11-27 | 江苏南瑞帕威尔电气有限公司 | Manually-operated emergent brake-separating device |
| CN108462088A (en) * | 2018-05-11 | 2018-08-28 | 泰安众诚自动化设备股份有限公司 | A kind of mining explosion-proof high-voltage vacuum combined type power distribution equipment |
| CN109301754A (en) * | 2018-11-15 | 2019-02-01 | 国网河北省电力有限公司石家庄供电分公司 | Insulating bar and electroscope integrated device |
| WO2022254241A1 (en) * | 2021-06-02 | 2022-12-08 | Abb Schweiz Ag | A switchgear panel for protection, isolation, and control in an electrical power system |
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| CN2911949Y (en) * | 2006-06-13 | 2007-06-13 | 丽水万控电气有限公司 | Emergency cut-off means of high voltage breaker |
| CN201011636Y (en) * | 2006-10-24 | 2008-01-23 | 上海泰高开关有限公司 | Rotating restoring urgent switching on and off mechanism |
| CN201036179Y (en) * | 2007-04-25 | 2008-03-12 | 上海泰高开关有限公司 | Emergent braking device |
| CN201270430Y (en) * | 2008-07-01 | 2009-07-08 | 华鹏集团公司 | Dual electric power switching apparatus |
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| DE69112461T2 (en) * | 1990-03-23 | 1996-04-18 | Schneider Electric Sa | Actuator for a three-position switch. |
| CN2911949Y (en) * | 2006-06-13 | 2007-06-13 | 丽水万控电气有限公司 | Emergency cut-off means of high voltage breaker |
| CN201011636Y (en) * | 2006-10-24 | 2008-01-23 | 上海泰高开关有限公司 | Rotating restoring urgent switching on and off mechanism |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117514A (en) * | 2013-01-24 | 2013-05-22 | 汕头市众业达电器设备有限公司 | Circuit breaker mechanical switch-on and switch-off operating mechanism for high-voltage switch cabinet |
| CN103247457A (en) * | 2013-04-23 | 2013-08-14 | 镇江大全伊顿电器有限公司 | Emergency switching-closing brake gear for switch cabinet |
| CN103413733A (en) * | 2013-08-01 | 2013-11-27 | 江苏南瑞帕威尔电气有限公司 | Manually-operated emergent brake-separating device |
| CN108462088A (en) * | 2018-05-11 | 2018-08-28 | 泰安众诚自动化设备股份有限公司 | A kind of mining explosion-proof high-voltage vacuum combined type power distribution equipment |
| CN109301754A (en) * | 2018-11-15 | 2019-02-01 | 国网河北省电力有限公司石家庄供电分公司 | Insulating bar and electroscope integrated device |
| WO2022254241A1 (en) * | 2021-06-02 | 2022-12-08 | Abb Schweiz Ag | A switchgear panel for protection, isolation, and control in an electrical power system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102306911B (en) | 2014-09-24 |
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Effective date of registration: 20220922 Address after: 201201 building B, 955 Shengli Road, Heqing Town, Pudong New Area, Shanghai Patentee after: COOPER ELECTRONIC TECHNOLOGIES (SHANGHAI) Co.,Ltd. Address before: Wang Agricultural Comprehensive Development Zone Tianning District export-oriented Hexi Road 213028 in Jiangsu province Changzhou City No. 1 Patentee before: EATON ELECTRICAL EQUIPMENT Co.,Ltd. |