CN1319233C - Gas insulating openingand closing apparatus - Google Patents
Gas insulating openingand closing apparatus Download PDFInfo
- Publication number
- CN1319233C CN1319233C CNB031076122A CN03107612A CN1319233C CN 1319233 C CN1319233 C CN 1319233C CN B031076122 A CNB031076122 A CN B031076122A CN 03107612 A CN03107612 A CN 03107612A CN 1319233 C CN1319233 C CN 1319233C
- Authority
- CN
- China
- Prior art keywords
- gas insulation
- closing arrangement
- insulation opening
- movable contact
- mentioned
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/304—Working fluid supplies
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
Provided is a gas-insulated switch gear capable of stably supporting and fixing its drive operating device, even if a larger drive operating device is used. An output shaft of a hydraulic operation drive device and a driving shaft of a movable contact of the gas-insulated switch gear are arranged in a line. A longitudinal shaft of a pressure storage device using air as a pressure storage source is arranged in parallel with the output shaft of the hydraulic operation drive device. A high pressure block equipped with a hydraulic line for supplying a high pressure operating fluid from the pressure storage device to the hydraulic operation drive device, is arranged perpendicular to the two types of shaft to support and fix the hydraulic operation drive device.
Description
Technical field
The present invention relates to a kind of have by be located in the grounding container fixed contact and with the said fixing contact connect from the gas insulation opening and closing arrangement of the current trip device that constitutes of movable contact.
Background technology
General gas insulation opening and closing arrangement is gas breaker filling SF in grounding container particularly
6Electrical insulating property gases such as gas, fixed contact contacts in the normal state fully with movable contact, becomes electric conductor.Electric current blocking principle as gas insulation opening and closing arrangement, in power transmission line and electric substation's converting equipment, when accidents such as ground connection, short circuit take place, the movable contact of the cut-off that is made of fixed contact and movable contact utilizes the characteristic turn-off current of insulating properties gas being opened from action by gyration by being located in the driving operating means in the gas that the inner or outside main rovolving shaft of ground connection case, lever etc. are connected.
Except that above-mentioned structure, also has such structure, wherein, configuration driven operating means output shaft on the axle identical with the movable contact shifting axle, use be configured to connect movable contact and drive operating means carry out straight-line connecting rod around gas airtightly gas in the ground connection case is sealed with seal, under this state, carry out rectilinear motion.
Be used for driving the actuating force transmission mechanism that is contained in the movable contact in above-mentioned 2 kinds of casees, relatively when using the gyroaxis transmission of drive force, carrying out the pluses and minuses of structure with the structure of direct canned linear motion of air seal.
Generally speaking, directly more in textural simpler occasion to the method that rectilinear motion carries out air seal, carries out the inside of grounding container, actuating force between the outside is transmitted.This be because, the straight line transmission drives the actuating force that operating means takes place and makes that only tensile load acts on more bearing strength member, thus the problem of production part deflection not.On the other hand, the component when using gyroaxis need bear the revolution that drives the actuating force that operating means takes place reliably by the structure of gyration transmission of drive force, so, need firm bearing, have that equipment is large-scale, the tendency of weightization.
Yet,, compare the long sizeization of the size of length direction in the occasion of the structure that is suitable for line seal gas with the occasion that adopts the rotating shaft seal structure.In addition, in long sizeization, the unilateral component that fixedly becomes of drive unit holds structure, drives the actuating force that operating means takes place relatively, installs self vibration, in addition, owing to be one-sided supporting construction, so the occasion that is difficult to strengthen is more.
For example, the hydraulic-driven operating means of Japanese kokai publication hei 10-50181 communique (patent documentation 1) record is provided with auxiliary switch, pump unit, pressure accumulation source (accumulator) as drive unit.Yet what drive operating means self fixedly becomes the one-sided supporting construction that is installed on gas insulation opening and closing arrangement by supporting member, and in the occasion that big actuating force takes place, drive unit self vibration is difficult to carry out moving of stable movable movable contact.The drive unit that is shown in above-mentioned known example is more small-sized, does not have very big problem even adopt one-sided supporting member also can think.On the other hand, as prior art, the configuration of the equipment around the general drive unit shown in Figure 7.In the occasion that relatively large drive unit and associated member is disposed at control box inside, be generally hydraulic-driven operating means and the structure that accumulator, pump unit are provided with respectively and use high press fit pipe to be connected, can not avoid the occasion of equipment enlarging, weightization more.
In addition, adopt operator that the gas insulation opening and closing arrangement of line seal structure uses to have under the specific condition when hydraulic pressure descends or during conveying etc. to be used for the occasion of locking mechanism of the position that locks movable contact reliably more general, for example, in Japanese kokai publication sho 62-237102 (patent documentation 2) number communique, owing to above-mentioned locking mechanism is located at the inside of hydroman, so, occasion in Maintenance and Repair, when using the manual operation gas insulation opening and closing arrangement lentamente, as under the state of the releasing of forgetting locking mechanism, carrying out manual opening and closing operations, then there is the possibility of equipment breakage.
In the gas insulation opening and closing arrangement of conventional example, as to driving the structure that operator supports and fixes, mounting flange etc. is set in the movable contact side that drives the operator device, be fixed in firm ground connection case cover.Yet, in order to become one-sided supporting and to have enough rigidity, the high support unit of a plurality of strengthening parts and rigidity is set simultaneously, thereby causes the maximization of overall dimensions textural.
In addition, when adopting straight line air seal structure in the gas insulation opening and closing arrangement in conventional example, the movable contact parts move to complete off-position from the position that is in the contact conducting state, thereby the part that will be contained in the gas at the contact conduction position is drawn out to side in the gas.According to so constructional feature, to compare with the structure that uses pivoted lever etc. that the driving shaft conversion is carried out in the output of drive unit, the size of length direction is elongated.In addition, when installation is used for the auxiliary switch of contacts status of detected gas insulated switchgear device, need equally to utilize to drive the operating means output shaft and take out the lever output that is used to drive this switch, so the size of length direction becomes longer.
In addition, in the gas insulation opening and closing arrangement of prior art example, for locking mechanism being located at the inside of hydroman, occasion in Maintenance and Repair, when when manually gas insulation opening and closing arrangement being operated, be easy to forget the releasing of locking mechanism, when carrying out manual opening and closing operations under this state, equipment is by breakage.
Summary of the invention
The object of the present invention is to provide a kind of gas insulation opening and closing arrangement that makes all densifications of device and reduce the size of length direction as far as possible.
The object of the present invention is to provide and a kind ofly can not make the gas insulation opening and closing arrangement of equipment breakage not keeping the maintenance mistiming.
In order to achieve the above object, in the present invention, gas insulation opening and closing arrangement have by be located in the grounding container fixed contact and with this fixed contact connect from the current trip device that constitutes of movable contact; It is characterized in that: be used to drive the output shaft of operator of above-mentioned movable contact and the driving shaft of above-mentioned movable contact with linearity configuration, simultaneously, the longitudinal axis that is parallel to the output shaft ground configuration pressure accumulater of aforesaid operations device, the output shaft of aforesaid operations device is with orthogonal configuration and fixedly have and be used for from the supporting member of above-mentioned pressure accumulater to the pipeline of operator supply pressure fluid relatively.
In addition, in order to achieve the above object, in the present invention, gas insulation opening and closing arrangement have by be located in the grounding container fixed contact and with this fixed contact connect from the current trip device that constitutes of movable contact; It is characterized in that: be used to drive the output shaft of operator of above-mentioned movable contact and the driving shaft of movable contact with linearity configuration, the longitudinal axis of pressure accumulater that is parallel to the output shaft ground configuration driven aforesaid operations device of aforesaid operations device, has the supporting member that engages with above-mentioned pressure accumulater, at the fixing aforesaid operations device of this supporting member.
In addition, in order to achieve the above object, in the present invention, gas insulation opening and closing arrangement have by be located in the grounding container fixed contact and with this fixed contact connect from the current trip device that constitutes of movable contact; It is characterized in that: be used to drive the output shaft of operator of above-mentioned movable contact and the driving shaft of movable contact with linearity configuration, have the supporting member that engages with the aforesaid operations device, on this supporting member, hydraulic pump unit is installed.
In addition, in order to achieve the above object, in the present invention, gas insulation opening and closing arrangement have by be located in the grounding container fixed contact and with this fixed contact connect from the current trip device that constitutes of movable contact; It is characterized in that: be used to drive the output shaft of operator of above-mentioned movable contact and the driving shaft of movable contact with linearity configuration, have the supporting member that engages with the aforesaid operations device, on this supporting member, auxiliary switch is installed.
In addition, in order to achieve the above object, in the present invention, gas insulation opening and closing arrangement have by be located in the grounding container fixed contact and with this fixed contact connect from the current trip device that constitutes of movable contact; It is characterized in that: be used to drive the output shaft of operator of above-mentioned movable contact and the driving shaft of movable contact with linearity configuration, utilize to connect the output shaft of aforesaid operations device and the joint (gold utensil) of the driving shaft of above-mentioned movable contact, the locking device that installation locks the action of aforesaid operations device.
In addition, in order to achieve the above object, in the present invention, gas insulation opening and closing arrangement have by be located in the grounding container fixed contact and with this fixed contact connect from the current trip device that constitutes of movable contact; It is characterized in that: be used to drive the output shaft of operator of above-mentioned movable contact and the driving shaft of movable contact with linearity configuration, have the supporting member that engages with the aforesaid operations device, on the path of the driving shaft motion of the output shaft of aforesaid operations device or movable contact, dispose auxiliary switch.
In addition, in order to achieve the above object, in the present invention, gas insulation opening and closing arrangement have by be located in the grounding container fixed contact and with this fixed contact connect from the current trip device that constitutes of movable contact; It is characterized in that: be used to drive the output shaft of operator of above-mentioned movable contact and the driving shaft of movable contact with linearity configuration, has the supporting member that engages with the aforesaid operations device, configuration locking device on the path of the driving shaft motion of the output shaft of aforesaid operations device or movable contact.
Description of drawings
Fig. 1 is the side view of the gas breaker integral body of the embodiment of the invention.
The sectional drawing of the movable contact unit that uses in the gas breaker of Fig. 2 for use in an embodiment of the present invention.
Fig. 3 is the side view of the hydroman unit of embodiments of the invention.
Fig. 4 is that the A-A of Fig. 3 is to view.
Fig. 5 is for watching the plane graph of the indicating device drive part of the embodiment of the invention towards the top from the below.
Fig. 6 is the side view of the locking mechanism high pressure pipe-fitting joint cage structure of the embodiment of the invention.
Fig. 7 is the side view of the locking mechanism of the embodiment of the invention.
Embodiment
Embodiments of the invention are described below with reference to the accompanying drawings.
Fig. 1 is an example of the form of implementation of gas insulation opening and closing arrangement of the present invention.In filling the SF of excellent in insulation characteristic
6Fixed contact unit 102 and movable contact unit 103 are accommodated in the inside of the ground connection case 101 of gas, are electrically connected with other gas insulation opening and closing arrangement or bus by main circuit conductor 104 and 105.Movable contact 106 shown in Figure 2 as driving shaft by insulating bar 107, line seal bar 108, and connector (binding gold utensil) 109 carry out hinge with the output shaft 111 of the apply device 110 that is used as operator and be connected.The contact that is made of said fixing contact unit 102 and movable contact unit 103 becomes blocking state towards right-hand when mobile at output shaft 111, is becoming the input state when left moves.
Fig. 3 illustrates ground connection case 101 state before with requisite auxiliary equipment in hydroman unit of using as gas insulation opening and closing arrangement that is installed to.As the gas insulation opening and closing arrangement operator unit, except the operator part 110 that actuating force takes place, also be provided with work oil is boosted to high pressure in the pump unit of accumulator 114 pressure accumulations (Port Application プ ユ ニ Star ト) 201, the auxiliary switch 202 that cuts off the position of the current signal of control hydroman or the machinery that electricity shows gas insulation opening and closing arrangement, 203, be to make movable contact 106 not move the unit of the locking mechanism 270 that locks when reducing hydraulic pressure, vision ground shows the break-make display 304 of the contact position of gas insulation opening and closing arrangement as shown in Figure 5, the operation counter 305 of the action frequency of storage gas insulation opening and closing arrangement.In addition, hydraulic pump 205, motor 206, hydralic pressure gauge 207, pressure on-off switch 208, safety valve 209 are set in pump unit 201.
Said pump unit 201 is installed to by erection joint 210 has the operator menifold piece 116 that is used for high-pressure work oil is supplied to the pipeline 115 of apply device 110, install to suppress the breakage, transfer of vibration of the equipment that the vibration when being moved by hydroman causes in the pump unit for 201 times and vibration-proof rubber 211 is installed.The high pressure that being connected of pump unit 201 and hydroman is suitable for minor diameter with pipe arrangement 212 and low pressure with pipe arrangement 213, thereby form the formation of the skew of the vibration phase that can absorb operator 110 and pump unit 201.In addition, pump unit 201 is configured to the bottom of apply device 110, thereby can shorten the size of the length direction of gas insulation opening and closing arrangement integral body, and, by being installed to menifold piece, thereby can firmly fix hydraulic pump unit by the supporting of erection joint and accumulator.
Auxiliary switch 202,203 also similarly is installed on operator menifold piece 116 with pump unit 201.The driving of auxiliary switch 202,203 is from being screwed into output shaft 111 front ends and being connected to auxiliary switch 202 by the connecting pin 251 that nut 111a is fixedly coupled 109 ones of joints by lever 252.Auxiliary switch becomes 2 grades of configurations up and down, by the lever 254 and lever 256 transmission of drive force that are installed on the gyroaxis of connecting rod 255 and subordinate's auxiliary switch 203 of the gyroaxis that is installed on higher level's auxiliary switch 202.
Fig. 5 in the figure, illustrates the state that has added break-make display 304 and operation counter 305 for watch the figure of hydroman unit towards the top from the below.
As shown in Figure 5, the gyroaxis of subordinate's auxiliary switch 202 also connects side to anti-connecting rod and stretches out gyroaxis, lever 302 here is installed, drive with drag-line 303 from these lever 302 link indicators, this drag-line 303 is connected with the lever of being located at operation counter, drives to be used for break-make display 304 and the operation counter 305 that vision ground shows the contact position of gas insulation opening and closing arrangement.
Like this, by auxiliary switch being fixed in the moving contact side of operator menifold piece 116, thereby effectively utilize the space that output shaft 111 moves, shorten the length direction of hydroman unit as much as possible, simultaneously, make all length densifications of gas insulation opening and closing arrangement.
In addition, locking mechanism 270 shown in Figure 3 hydraulically is connected with high press fit pipe 271 by operator menifold piece 116.The joint 272,273 of high pressure is installed at the two ends of high press fit pipe 271, and the joint 273 that is installed on operator menifold piece side can mechanically not make installation portion loosening, have can rotating Fig. 6 structure.
Fig. 7 illustrates the detailed construction of locking mechanism.Utilize to connect the output shaft of aforesaid operations device and the joint of the driving shaft of above-mentioned movable contact, the locking device that installation locks the action of aforesaid operations device.This locked configuration is at open operation hydraulic pressure or barrier is when causing step-down for some reason, and movable contact 106 does not move towards the blocking direction, so, automatically action is locked.
The unit of locking mechanism 270 hydraulically moves, and under the pressurized conditions of common running status, the hydraulic coupling that acts on lock piston 501 is bigger than the load that is produced by disk spring 502, so locking (mechanism) piston 501 moves towards the top.Unusually make the occasion that the pressure of hydraulic pressure system descends, hydraulic coupling becomes littler than spring force at certain, lock piston 501 moves locking jointing 109 towards the below.
In the present invention, different with the structure that the inner Built-in lock of introducing in the prior art of the operator at gas insulation opening and closing arrangement is decided mechanism, by at operator outer setting locking mechanism, form structure as power tool that then can not installation and maintenance maintenance usefulness for the state of pulling down locking mechanism.This Maintenance and Repair power tool is the instrument that is connected to jointing 109 shown in Figure 7 that is screwed into, for made the specific purpose tool of gas insulation opening and closing arrangement action when the periodic inspection etc. lentamente by manual operation.When this instrument of installation, as not pulling down locking mechanism, then aspect mechanism, can not connect Maintenance and Repair power tool and jointing 109, so, form the structure of pulling down locking mechanism easily.When pulling down locking mechanism, pull down construction bolt 503, be about about 30 ° of the unit rotary that the centre of gyration makes locking mechanism 270 with operator menifold piece joint 273, be put into and purchase special use and be provided with on the platform temporarily.Like this, carry out manual operation to the releasing of the locking mechanism that can bear in memory, do not worry the breakage of equipment.
In addition, same with auxiliary switch, for locking mechanism, effectively utilize the used space of the driving shaft motion of output shaft 111 or insulating bar 107 movable contacts, shorten the length direction of hydroman unit as much as possible, simultaneously, make the length densification of gas insulation opening and closing arrangement integral body.
According to the present invention, in the large-scale gas insulation opening and closing arrangement that adopts the long straight line air seal structure of lengthwise dimension, also drive operating means by erection joint and accumulator supporting by the menifold piece, so, can operate the load and the actuating force of drive unit generation relatively and keep enough rigidity, do not need more stiffener that needs in the prior art etc., and realized the miniaturization and the cost degradation of overall dimensions.
In addition, according to gas insulation opening and closing arrangement of the present invention, in the large-scale gas insulation opening and closing arrangement that adopts the long straight line air seal structure of lengthwise dimension, by the movable space of the driving shaft that utilizes operator, members such as configuration auxiliary switch or locking mechanism have shortened the entire length size.
In addition, according to gas insulation opening and closing arrangement of the present invention, become do not pull down locking mechanism then can not installation and maintenance maintenance with the structure of power tool, so, can prevent from advance when Maintenance and Repair, not pull down that locking mechanism carries out operation mistakenly and the equipment breakage that causes.
In addition, according to gas insulation opening and closing arrangement of the present invention, can support securely to install with the irrelevant earth polar of the maximization that drives operating means and drive operating means, and can drive load that operating means takes place relatively and keep and guarantee enough mechanical rigids, simultaneously, all can be set as driving the operating means imperative equipment, move and test as driving the operating means single-piece.By above-mentioned effect, can realize gas insulation opening and closing arrangement and drive unit that inexpensive, compact, assembling operation and maintainability increase substantially.
In addition, according to gas insulation opening and closing arrangement of the present invention, by all being set simultaneously as driving equipment such as the requisite pump of operating means unit, auxiliary switch, locking mechanism, can realize action, test, shorten built-up time and handle the used time of fault that the back takes place of buying as operation drive unit single-piece.
Claims (12)
1. gas insulation opening and closing arrangement has:
By be located in the grounding container fixed contact and
With this fixed contact connect from the current trip device that constitutes of movable contact;
It is characterized in that:
Be used to drive the output shaft of operator of above-mentioned movable contact and the driving shaft of above-mentioned movable contact with linearity configuration, simultaneously,
The longitudinal axis that is parallel to the output shaft ground configuration pressure accumulater of aforesaid operations device,
Relatively the output shaft of aforesaid operations device is with orthogonal configuration and fixedly have and be used for from the supporting member of above-mentioned pressure accumulater to the pipeline of operator supply pressure fluid,
Have the bottom that is configured in the aforesaid operations device and be installed in pump unit on the supporting member.
2. gas insulation opening and closing arrangement according to claim 1 is characterized in that: use the menifold piece as above-mentioned supporting member, have pipeline from above-mentioned pressure accumulater to above-mentioned operator that supply with high-pressure fluid from this menifold piece.
3. gas insulation opening and closing arrangement according to claim 1 is characterized in that: above-mentioned pressure accumulater engages above-mentioned supporting member, at the fixing aforesaid operations device of this supporting member.
4. gas insulation opening and closing arrangement according to claim 1 is characterized in that: above-mentioned pressure accumulater by being arranged on grounding container bottom permanent joint and the permanent joint of cover plate install.
5. gas insulation opening and closing arrangement according to claim 1 is characterized in that: the driving shaft of above-mentioned movable contact connects by pin and is connected with the output shaft of aforesaid operations device.
6. gas insulation opening and closing arrangement according to claim 1 is characterized in that: being connected by high pressure of said pump unit and operator carried out with pipe arrangement with pipe arrangement and low pressure.
7. gas insulation opening and closing arrangement according to claim 1 is characterized in that: under the said pump unit vibration-proof rubber is installed.
8. gas insulation opening and closing arrangement according to claim 1 is characterized in that: on above-mentioned supporting member auxiliary switch is installed.
9. gas insulation opening and closing arrangement according to claim 8 is characterized in that: connect above-mentioned auxiliary switch and display by drag-line.
10. gas insulation opening and closing arrangement according to claim 1 is characterized in that: utilize to connect the output shaft of aforesaid operations device and the joint of the driving shaft of above-mentioned movable contact, the locking device that installation locks the action of aforesaid operations device.
11. gas insulation opening and closing arrangement according to claim 1 is characterized in that: on the part of the driving shaft motion of the output shaft of aforesaid operations device or movable contact, dispose auxiliary switch.
12. gas insulation opening and closing arrangement according to claim 1 is characterized in that: configuration locking device on the part of the driving shaft motion of the output shaft of aforesaid operations device or movable contact.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP292216/2002 | 2002-10-04 | ||
| JP2002292216A JP4062043B2 (en) | 2002-10-04 | 2002-10-04 | Gas insulated switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1487639A CN1487639A (en) | 2004-04-07 |
| CN1319233C true CN1319233C (en) | 2007-05-30 |
Family
ID=31987207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031076122A Expired - Lifetime CN1319233C (en) | 2002-10-04 | 2003-03-21 | Gas insulating openingand closing apparatus |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1406278B1 (en) |
| JP (1) | JP4062043B2 (en) |
| KR (1) | KR101015518B1 (en) |
| CN (1) | CN1319233C (en) |
| TW (1) | TWI223300B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100626818B1 (en) * | 2005-07-12 | 2006-09-20 | 엘에스산전 주식회사 | Gas insulated switchgear |
| KR100846223B1 (en) * | 2006-03-09 | 2008-07-15 | (주)서전기전 | Medium Voltage Switch-gear |
| JP5306034B2 (en) * | 2009-04-16 | 2013-10-02 | 株式会社東芝 | Gas insulated switchgear |
| CN101937791B (en) | 2009-06-29 | 2013-03-20 | 西门子公司 | Control device of isolating switch |
| CN103177906A (en) * | 2011-12-26 | 2013-06-26 | 西门子公司 | Circuit breaker for medium voltage switchgear |
| KR200467568Y1 (en) * | 2012-01-02 | 2013-06-19 | 엘에스산전 주식회사 | Appratus for auxiliary contact of circuit braker |
| KR101668341B1 (en) | 2012-04-18 | 2016-10-21 | 가부시키가이샤 히타치세이사쿠쇼 | Switchgear |
| KR200487214Y1 (en) * | 2014-05-14 | 2018-09-28 | 엘에스산전 주식회사 | Gas-insulated switch gear |
| KR200481214Y1 (en) | 2015-06-24 | 2016-08-30 | 엘에스산전 주식회사 | The Locking Device for Operating Mechanism of Gas Insulated Switchgear |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62237102A (en) * | 1986-04-05 | 1987-10-17 | ベ−ベ−ツエ−・アクチエンゲゼルシヤフト・ブラウン・ボバリ・ウント・シ− | Linear motion generator for driving load |
| JPH1050181A (en) * | 1996-08-01 | 1998-02-20 | Toshiba Corp | Hydraulic pressure operation device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1132801B (en) * | 1956-03-02 | 1962-07-05 | Jean Louis Gratzmuller | Hydraulic system |
| FR2115506A5 (en) * | 1970-11-23 | 1972-07-07 | Gratzmuller Jean Louis | |
| US3761735A (en) * | 1972-07-06 | 1973-09-25 | Turner Electric Corp | Power apparatus for operating electric disconnect switches |
-
2002
- 2002-10-04 JP JP2002292216A patent/JP4062043B2/en not_active Expired - Lifetime
-
2003
- 2003-03-21 CN CNB031076122A patent/CN1319233C/en not_active Expired - Lifetime
- 2003-04-24 TW TW092109605A patent/TWI223300B/en not_active IP Right Cessation
- 2003-08-11 EP EP20030018257 patent/EP1406278B1/en not_active Expired - Lifetime
- 2003-08-19 KR KR1020030057170A patent/KR101015518B1/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62237102A (en) * | 1986-04-05 | 1987-10-17 | ベ−ベ−ツエ−・アクチエンゲゼルシヤフト・ブラウン・ボバリ・ウント・シ− | Linear motion generator for driving load |
| JPH1050181A (en) * | 1996-08-01 | 1998-02-20 | Toshiba Corp | Hydraulic pressure operation device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1406278A3 (en) | 2006-05-03 |
| JP2004127802A (en) | 2004-04-22 |
| KR101015518B1 (en) | 2011-02-16 |
| JP4062043B2 (en) | 2008-03-19 |
| EP1406278A2 (en) | 2004-04-07 |
| KR20040031577A (en) | 2004-04-13 |
| EP1406278B1 (en) | 2015-05-13 |
| TWI223300B (en) | 2004-11-01 |
| CN1487639A (en) | 2004-04-07 |
| TW200406014A (en) | 2004-04-16 |
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