CN2648649Y - Fixed vacuum circuit breaker switch cabinet - Google Patents

Fixed vacuum circuit breaker switch cabinet Download PDF

Info

Publication number
CN2648649Y
CN2648649Y CN 03238361 CN03238361U CN2648649Y CN 2648649 Y CN2648649 Y CN 2648649Y CN 03238361 CN03238361 CN 03238361 CN 03238361 U CN03238361 U CN 03238361U CN 2648649 Y CN2648649 Y CN 2648649Y
Authority
CN
China
Prior art keywords
vacuum circuit
breaker
walls
bus
insulation
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
Application number
CN 03238361
Other languages
Chinese (zh)
Inventor
薛宝根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XIAMEN XIECHENG INDUSTRIAL Co Ltd
Original Assignee
XIAMEN XIECHENG INDUSTRIAL Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by XIAMEN XIECHENG INDUSTRIAL Co Ltd filed Critical XIAMEN XIECHENG INDUSTRIAL Co Ltd
Priority to CN 03238361 priority Critical patent/CN2648649Y/en
Application granted granted Critical
Publication of CN2648649Y publication Critical patent/CN2648649Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

The utility model discloses a fixed vacuum circuit breaker switchgear, mainly containing a cabinet body, a bus bar, a disconnector that can be connected with the output end of the bus bar, a vacuum circuit breaker that is connected by the bus disconnector and a wall separator insulator. The wall separator insulator has a wall separator that separates a bus room and a cable room; the base end surface of the vacuum circuit breaker is adhered and fixed with the base of the wall separator insulator. The vacuum circuit breaker of the utility model is arranged upside down and the base of the upside down arranged vacuum circuit breaker and the base of the disconnector are respectively at a graft union separated by the bus room and the cable room, thus making the operating mechanisms of the vacuum circuit breaker and the disconnector so close that can be arranged in one operating room, therefore, not only the installing bracket of the circuit breaker is saved, but also the conductive part of the main circuit does not need to maintain sufficient ground insulation distance to the stent, thereby enhancing the space of the current transformer and cable installation, being convenient for constructors to do cabinet entering installation and further decreasing the size of the switchgear.

Description

Fixed vacuum circuit-breaker switch cubicle
Technical field
The utility model relates to a kind of electric power system switchgear, particularly relates to a kind of fixed vacuum circuit-breaker switch cubicle.
Background technology
The killer switch cabinet of 12KV can be divided into two big classes substantially both at home and abroad at present, and a class is a withdraw-type killer switch cabinet, and a class is fixed killer switch cabinet.When maintenance, withdraw-type switch cabinet is more convenient than fixed switch cubicle, though withdraw-type switch cabinet is in order to realize removing function, propelling, shift-out mechanism and valve have been increased, also increased and adapted with it that comparatively complicated mechanical is chain, more than simultaneously six dynamic/static contact grafting points and 24-56 grafting point, this has not only increased manufacturing cost and manufacture difficulty, has also increased unreliable factor simultaneously.But advantages such as withdraw-type switch cabinet is still little with volume, compact conformation, maintenance convenience are subjected to user's favor.Continuous progress along with the manufacturing technology of circuit breaker, improve constantly the mechanical endurance of the vacuum circuit-breaker of spring mechanism, be the basic reliability requirement of vacuum circuit-breaker 10,000 times mechanical endurance, say nothing of the mechanical endurance of permanent magnetic actuator vacuum circuit breaker, surpassed the mechanical endurance of vacuum interrupter.The mechanical endurance of now domestic and international vacuum circuit-breaker is mostly in the scope below 100,000 times more than 10,000 times.Along with improving constantly of breaker reliability, withdraw-type switch cabinet compare with fixed switch cubicle the maintenance that had easily advantage lose gradually.Domestic most of switch experts think, if now select for use vacuum circuit-breaker to make the main electrical equipment primary element of switch cubicle, the reliability of fixed switch cubicle is than the reliability height of withdraw-type switch cabinet, because fixed switch cubicle need not to advance, shifts out, valve and comparatively complicated mechanical is chain etc., manufacturing cost also decreases simultaneously.But the volume of state's internally-fixed switch cubicle is bigger now, and promptly floor space is bigger, and in the urban network restructuring of an inch of land is an inch of gold, fixed switch cubicle does not give full play of the advantage of non-maintaining vacuum circuit-breaker.The wide 750mm that is generally of the fixed killer switch cabinet of external compact cabinet, the isolating switch that switch cubicle is used adopts the SF6 on-load switch, and this causes the cost height, and is not easy to see tangible isolation fracture, does not meet the national conditions of China.In sum, develop miniaturization, obvious cut-off point is arranged, be easy to be connected, fixed vacuum circuit-breaker switch cubicle easy for installation, not only can reduce cost, and can improve the reliability of switch cubicle with other cabinet types.
A kind of known fixed switch cubicle (as shown in Figure 1) comprises cabinet 1 ', is arranged on the busbar 2 ' of cabinet 1 ' internal upper part, the isolating switch 3 ' that is connected with busbar 2 ' output, is installed in sensor 6 ' and man-operating mechanism etc. behind vacuum circuit-breaker 5 ' in the cabinet 1 ', the electric current by vacuum circuit-breaker mounting panel 4 '.The base of the vacuum circuit-breaker 5 ' of this switch cubicle down, for just putting installation, must establish the circuit breaker mounting bracket in the cable vault, the conductive attachment of major loop must keep enough insulation distances with support, it is bigger that this kind mounting means takies the space of cable vault, makes troubles for the cable installation and maintenance.
Summary of the invention
The purpose of this utility model is to provide a kind of have big operating space, miniaturization, fixed vacuum circuit-breaker switch cubicle easy for installation.
For achieving the above object, solution of the present utility model is:
The utility model is a kind of fixed vacuum circuit-breaker switch cubicle, and it comprises bus-bar room, circuit breaker cable chamber, operating mechanism relaying protection chamber, busbar, isolating switch and vacuum circuit-breaker; After the busbar of described bus-bar room is three-phase, in, preceding arrangement, the end of incoming cables of isolating switch be installed in bus-bar room in busbar be connected, the leading-out terminal of the vacuum circuit-breaker that the leading-out terminal of isolating switch is indoor with being installed in the circuit breaker cable is connected.The base of described vacuum circuit-breaker mounting seat end face and isolating switch is fitted fixing.
Described isolating switch adopts tri-station isolating switch, and it mainly is made up of a deciliter operating mechanism, power transmission shaft, insulated tension pole, insulation connecting lever, isolation knife, bus end static contact and insulation, barrier insulation through walls and ground connection fixed contact; Isolation knife is movably connected in the upper end of barrier insulation through walls, and the other end is positioned at the bus end and can combines with bus end static contact and insulation or intermediate isolating or combine with the ground connection fixed contact; Deciliter operating mechanism drives the rotation end swing of isolation knife around isolation knife by power transmission shaft, insulation connecting lever and insulated tension pole; Described barrier insulation through walls mainly constitutes by insulator with the separated dividing plate through walls of bus-bar room and circuit breaker cable chamber, and insulator places the middle part that is fixed on dividing plate through walls; Described bus end static contact and insulation is at bus-bar room, and the leading-out terminal that is positioned at the indoor isolation knife of circuit breaker cable is connected with the leading-out terminal of vacuum circuit-breaker.
The rotation end of described isolation knife is movably articulated in the shaft hole at middle part of barrier insulation through walls.
The level height of sub-shaft hole of described barrier insulation through walls and dividing plate through walls upper surface is the 30-150 millimeter.
The dividing plate through walls of described barrier insulation through walls forms two planes of a upper and lower dislocation at longitudinal cross-section, and the bottom surface on plane is fitted fixing on the upper surface of vacuum circuit-breaker mounting seat and the dividing plate through walls.
The downward elongated end of the insulator of described barrier insulation through walls has a breach that can be connected with connection bus.
The sub-angle of inclination of described bus end static contact and insulation is 40 °-60 °.
Vacuum circuit-breaker of the present utility model is to be inverted to be installed, the base of the vacuum circuit-breaker after the upside-down mounting and the base of isolating switch be the junction surface that separates of each comfortable bus-bar room and cable vault all, this makes that the operating mechanism of vacuum circuit-breaker and isolating switch is nearer to being installed in the operating room, simplified the design of mechanical chain mechanism, dwindled the length of mechanical chain mechanism, make mechanical chain mechanism compact more, improved the reliability of mechanical chain.And the downward elongated end of barrier insulation through walls of the utility model isolating switch has a breach that can be connected with connection bus, the existence of this breach, make connection bus when being connected, can not occupy insulation distance with barrier insulation through walls, connection bus and switch cubicle wall strengthen, insulation distance strengthens, thereby can dwindle the volume of switch cubicle.
Barrier insulation through walls of the present utility model has changed the cylindrical structural of conventional insulators, traditional dividing plate through walls and insulator are combined, design this benzvalene form of the utility model barrier insulation through walls, and barrier insulation through walls is whole to adopt the epoxy material cast of insulation to form, make isolating switch the insulation distance of prerequisite vertical direction transfer to the level insulation distance, the utility model has utilized the wasted space of switch cubicle, has effectively reduced the shared height of isolating switch.
In addition, the mounting bracket of circuit breaker because the utility model has defaulted, thus the space that increase current transformer and cable are installed has reduced the workmen and has advanced the cabinet mounting hardness, and the size of switch cubicle can further be dwindled.
By above-mentioned design, though the overall dimension of the utility model switch cubicle significantly reduces (600 wide * 900 dark * 1950 height), the electrical apparatus insulation distance of switch cubicle does not a bit reduce, insulation margin is big.The utility model adopts air insulation, and specific volume is also little mutually for the C-GIS2100 inflation cabinet of overall dimension and Japanese up-to-date development (600 wide * 1185 deeply * 2300 height), and cost of the present utility model is inflated low many of cabinet than C-G1S2100.The utility model can easily see before the cabinet close close, deciliter state of isolation and ground connection fracture, bus in the cabinet, arrange before adopting in the back to be connected with the ring main unit of interior dress on-load switch and combined electrical apparatus and need not the transition cabinet, the cable installing space is big, highly meets the requirement about power supply department 600mm.
If vertical side dress circuit breaker (Chinese patent ZL02219787.7) of tri-station isolating switch and inventor's invention is combined, not only can significantly reduce the overall volume of switch cubicle, reduced manufacturing cost, and improved the reliability of switch cubicle, and simplified and being connected of other cabinet types, the external form of inflation cabinet had, the price of fixed switch cubicle, tangible visual fracture is arranged, and abundant clog-free cable installing space is desirable controller switching equipment.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the schematic diagram of known switch cubicle;
Fig. 2 is the utility model front view;
Fig. 3 is the utility model end view;
Fig. 4 is the front view of the utility model isolating switch;
Fig. 5 is the end view of the utility model isolating switch;
Fig. 6 is the vertical view of the utility model isolating switch;
Fig. 7 is the front view of the utility model barrier insulation through walls;
Fig. 8 attempts for the side of the utility model barrier insulation through walls;
Fig. 9 is the vertical view of the utility model barrier insulation through walls;
Figure 10 is the another kind of installation diagram of the utility model operating mechanism relaying protection chamber.
Embodiment
As Fig. 2, shown in Figure 3, the fixed vacuum circuit-breaker switch cubicle of the utility model comprises bus-bar room 10, circuit breaker cable chamber 20, operating mechanism relaying protection chamber 1, busbar 2, tri-station isolating switch 3 and vacuum circuit-breaker 4.
After described busbar 2 is A, B, C three-phase, in, preceding arrangement, the end of incoming cables of tri-station isolating switch 3 be installed in bus-bar room 10 in busbars 2 is connected, the leading-out terminal of the vacuum circuit-breaker 4 that the leading-out terminal of tri-station isolating switch 3 is interior with being installed in circuit breaker cable chamber 20 is connected.
As Fig. 4, Fig. 5, shown in Figure 6, described tri-station isolating switch 3 mainly is made up of deciliter operating mechanism 31, power transmission shaft 30, insulated tension pole 32, insulation connecting lever 40, isolation knife 33, bus end static contact and insulation 34, ground connection fixed contact 35, barrier insulation through walls 36.Described bus end static contact and insulation 34 is at bus-bar room 10.Described isolation knife 33 is positioned at bus end 21 (as shown in Figure 3); Deciliter operating mechanism 31 drives isolation knife 33 by power transmission shaft 30, insulation connecting lever 40 and insulated tension pole 32 and rotates about it end 331 swings, thereby be implemented in different angles and bus end static contact and insulation 34 or ground connection fixed contact 35 in conjunction with separate, or make isolation knife 33 be in unsettled intermediate isolating state, realize to close close, isolation and grounding function.
Shown in Fig. 7-9, described barrier insulation 36 through walls mainly is made of insulator 362 and dividing plate through walls 367, this barrier insulation 3 through walls is to be poured into a mould by the epoxy material of insulation to form, insulator 362 places the middle part that is fixed on dividing plate 367 through walls, its portion of extending upward forms a connecting portion 363 that is connected with the rotation end 331 of isolation knife 33, middle part at this connecting portion 363 laterally forms a through hole 364, and promptly shaft hole 364; The downward elongated end of described barrier insulation 36 through walls has a breach 361 that can be connected with connection bus 8, the existence of this breach 361, make connection bus 8 (as shown in Figure 5) when being connected, can not occupy insulation distance with barrier insulation 36 through walls, connection bus 8 strengthens with the switch cubicle wall, insulation distance strengthens, thereby has dwindled the volume of switch cubicle.Described dividing plate through walls 37 forms two planes 371,372 (that is: step surface) of a upper and lower dislocation at longitudinal cross-section, and described barrier insulation 35 shaft holes 364 through walls are the 30-150 millimeter with the level height of dividing plate through walls 357 upper surfaces.When assembling, the upper surface of the mounting seat 42 (as shown in Figure 5) of vacuum circuit-breaker 4 just with dividing plate 37 through walls on the bottom surface (that is: the base of tri-station isolating switch 3) on plane 371 fit fixing, vacuum circuit-breaker 4 is to be inverted to be installed, the base 42 of the vacuum circuit-breaker 4 after the upside-down mounting and the base of tri-station isolating switch 3 be the junction surface that separates of each comfortable bus-bar room 10 and cable vault 20 all, this makes vacuum circuit-breaker 4 nearer to being installed in the operating room with the operating mechanism of tri-station isolating switch 3, simplified the design of mechanical chain mechanism, dwindle the length of mechanical chain mechanism, improved the reliability of mechanical chain.Described dividing plate through walls 37 also can be upper and lower two parallel planes at longitudinal cross-section.
As shown in Figure 5, the rotation end 331 of isolation knife 33 is movably articulated in the shaft hole 364 (as shown in Figure 7) at barrier insulation through walls 36 middle parts, and its leading-out terminal is connected with the leading-out terminal of vacuum circuit-breaker 4.
Barrier insulation 36 through walls of the present utility model has changed the cylindrical structural of conventional insulators, dividing plate 37 through walls is combined with insulator 362, design this benzvalene form of the utility model barrier insulation 36 through walls, the insulation distance of the vertical direction that must possess is transferred to the level insulation distance, utilize the wasted space of switch cubicle, effectively reduced the shared height of isolating switch.Circuit breaker or the instrument transformer of connection breach 361 for reserving of the lower end of described barrier insulation 36 through walls.During installation, the dividing plate through walls 367 on barrier insulation 36 through walls is located between insulator 362 and the isolation knife 33, and when being installed in the utility model in the switch cubicle, this dividing plate 367 through walls can separate bus-bar room 10 and cable vault 20.
Described bus end static contact and insulation 34 that is connected with bus is bird formula insulator, the angle of inclination is between 40 °-60 °, the best is 50 °, and beak and bus link have guaranteed the insulation distance of bus link and switch cubicle side plate, has reserved the space for isolation knife 33 rotations and operating axis.
As shown in figure 10, for shared useful space, further reduction operation mechanism relaying protection chamber 1, the utility model can be horizontal arrangement with operating mechanism relaying protection chamber 1.
Vertical side dress switch vacuum circuit-breaker (Chinese patent ZL02219787.7) and tri-station isolating switch that vacuum circuit-breaker 4 in the utility model preferably adopts the inventor to be invented.Certainly, also can adopt the isolating switch of other form, but arrangement promptly falls into protection range of the present utility model as long as vacuum circuit-breaker is upside-down mounting.
Operation principle of the present utility model:
Main electric elements in the utility model, adopt vertical side dress switch vacuum circuit-breaker and three station sides dress isolating switch, if claim that the vacuum circuit-breaker of traditional fixed switch cubicle is a formal dress, the installation of vacuum circuit-breaker 4 so of the present utility model just can be referred to as upside-down mounting.Vacuum circuit-breaker 4 bases 42 after the upside-down mounting and the mounting seat of tri-station isolating switch 3, all joint portion that separates of each comfortable bus-bar room 10 and circuit breaker cable chamber 20.This structural design, make the operating mechanism of vacuum circuit-breaker 4 and tri-station isolating switch 3, close together is to being contained in the operating room together, simplified the design of mechanical chain, dwindled the connection length of mechanical chain, improved the reliability of mechanical chain, cable is installed clear space and is maximized big under equal cabinet profile.

Claims (7)

1, a kind of fixed vacuum circuit-breaker switch cubicle, it comprises bus-bar room, circuit breaker cable chamber, operating mechanism relaying protection chamber, busbar, isolating switch and vacuum circuit-breaker; After the busbar of described bus-bar room is three-phase, in, preceding arrangement, the end of incoming cables of isolating switch be installed in bus-bar room in busbar be connected, the leading-out terminal of the vacuum circuit-breaker that the leading-out terminal of isolating switch is indoor with being installed in the circuit breaker cable is connected; It is characterized in that: the base of described vacuum circuit-breaker mounting seat end face and isolating switch is fitted fixing.
2, fixed vacuum circuit-breaker switch cubicle according to claim 1, it is characterized in that: described isolating switch adopts tri-station isolating switch, and it mainly is made up of a deciliter operating mechanism, power transmission shaft, insulated tension pole, insulation connecting lever, isolation knife, bus end static contact and insulation, barrier insulation through walls and ground connection fixed contact; Isolation knife is movably connected in the upper end of barrier insulation through walls, and the other end is positioned at the bus end and can combines with bus end static contact and insulation or intermediate isolating or combine with the ground connection fixed contact; Deciliter operating mechanism drives the rotation end swing of isolation knife around isolation knife by power transmission shaft, insulation connecting lever and insulated tension pole; Described barrier insulation through walls mainly constitutes by insulator with the separated dividing plate through walls of bus-bar room and circuit breaker cable chamber, and insulator places the middle part that is fixed on dividing plate through walls; Described bus end static contact and insulation is at bus-bar room, and the leading-out terminal that is positioned at the indoor isolation knife of circuit breaker cable is connected with the leading-out terminal of vacuum circuit-breaker.
3, fixed vacuum circuit-breaker switch cubicle according to claim 2 is characterized in that: the rotation end of described isolation knife is movably articulated in the shaft hole at middle part of barrier insulation through walls.
4, fixed vacuum circuit-breaker switch cubicle according to claim 2 is characterized in that: the level height of sub-shaft hole of described barrier insulation through walls and dividing plate through walls upper surface is the 30-150 millimeter.
5, according to claim 2 or 4 described fixed vacuum circuit-breaker switch cubicles, it is characterized in that: the dividing plate through walls of described barrier insulation through walls forms two planes of a upper and lower dislocation at longitudinal cross-section, and the bottom surface on plane is fitted fixing on vacuum circuit-breaker mounting seat end face and the dividing plate through walls.
6, according to claim 2 or 4 described fixed vacuum circuit-breaker switch cubicles, it is characterized in that: the downward elongated end of the insulator of described barrier insulation through walls has a breach that can be connected with connection bus.
7, fixed vacuum circuit-breaker switch cubicle according to claim 1 is characterized in that: the sub-angle of inclination of described bus end static contact and insulation is 40 °-60 °.
CN 03238361 2003-09-19 2003-09-19 Fixed vacuum circuit breaker switch cabinet Expired - Lifetime CN2648649Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03238361 CN2648649Y (en) 2003-09-19 2003-09-19 Fixed vacuum circuit breaker switch cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03238361 CN2648649Y (en) 2003-09-19 2003-09-19 Fixed vacuum circuit breaker switch cabinet

Publications (1)

Publication Number Publication Date
CN2648649Y true CN2648649Y (en) 2004-10-13

Family

ID=34326825

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03238361 Expired - Lifetime CN2648649Y (en) 2003-09-19 2003-09-19 Fixed vacuum circuit breaker switch cabinet

Country Status (1)

Country Link
CN (1) CN2648649Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102427206A (en) * 2011-10-26 2012-04-25 江苏华唐电器有限公司 Miniature fixed metal-armored switchgear
CN104577747A (en) * 2014-12-10 2015-04-29 江苏德春电力科技有限公司 Switch cabinet integrated to modular smart power grid
CN112234440A (en) * 2020-12-15 2021-01-15 国网山东省电力公司潍坊供电公司 Switch cabinet and operation method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102427206A (en) * 2011-10-26 2012-04-25 江苏华唐电器有限公司 Miniature fixed metal-armored switchgear
CN102427206B (en) * 2011-10-26 2015-03-04 江苏华唐电器有限公司 Miniature fixed metal-armored switchgear
CN104577747A (en) * 2014-12-10 2015-04-29 江苏德春电力科技有限公司 Switch cabinet integrated to modular smart power grid
CN104577747B (en) * 2014-12-10 2017-02-22 江苏德春电力科技股份有限公司 Switch cabinet integrated to modular smart power grid
CN112234440A (en) * 2020-12-15 2021-01-15 国网山东省电力公司潍坊供电公司 Switch cabinet and operation method

Similar Documents

Publication Publication Date Title
CN2836279Y (en) 12KV indoor AC high-voltage sulfur hexafluoride ring network switchgear
CN1047695C (en) Gas isolated SF6 switch with bus unit and metal shell sealing
CN101409175B (en) Combined high-voltage load switch and high-voltage switchgear thereof
TWI505589B (en) Switchgear and switchgear assembly method
CN1251376C (en) Combined gas insulated on/off means
CN1278465C (en) Fixed vacuum breaker switch cabinet
CN101001005A (en) Gas insulation switch device
EP1107408A1 (en) Gas-insulated switchgear
CN2840304Y (en) Indoor high-voltage three-station isolating switch
CN201142295Y (en) Miniature rotary isolation switch
CN2648649Y (en) Fixed vacuum circuit breaker switch cabinet
US20020012225A1 (en) Hybrid type gas insulation switch gear apparatus
CN2646852Y (en) Three-position disconnecting switch
CN201515161U (en) Gas insulation metal sealing switch equipment
CN218732744U (en) Environment-friendly gas-insulated vacuum-opening-closing power distribution switch cabinet
CN2525668Y (en) Outdoor high voltage vacuum breaker
CN114156763B (en) Economical switchgear suitable for wind power
CN1038544A (en) Enclosed load-break switch unit
CN201797234U (en) Small-sized vacuum ring main unit
CN205583387U (en) Solid insulated cabinets's major loop and use solid insulated cabinets of this major loop
CN115275855A (en) Air insulation looped netowrk cabinet
CN106374381A (en) Air-insulated cabinet
CN1795595A (en) Switch assembly
US20040011765A1 (en) Three-phase encapsulated high-voltage circuit breaker for outdoor use
CN206180469U (en) Empty gas insulated cabinet

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Effective date of abandoning: 20030919

C25 Abandonment of patent right or utility model to avoid double patenting