CN101425425B - Fixed side-installed vacuum circuit breaker - Google Patents
Fixed side-installed vacuum circuit breaker Download PDFInfo
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- CN101425425B CN101425425B CN200810229103XA CN200810229103A CN101425425B CN 101425425 B CN101425425 B CN 101425425B CN 200810229103X A CN200810229103X A CN 200810229103XA CN 200810229103 A CN200810229103 A CN 200810229103A CN 101425425 B CN101425425 B CN 101425425B
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Abstract
The invention relates to a fixed side-entry type vacuum circuit breaker which comprises a mainframe box provided with a wire connecting terminal, an oil hydraulic buffer, and the like, a spring operating mechanism assembled on the mainframe box and vacuum arc-extinguishing chambers connected through an output four-linkage rod, wherein the modularized vacuum circuit breaker is adopted and is assembled in a front-end box body of the mainframe box through the minimized spring operating mechanism; the minimized vacuum arc-extinguishing chambers which are sealed and arranged for one time are adopted and are completely insulated in a fixedly-sealed terminal post together with a master electric loop and are longitudinally arranged on a rear-side bracket of the mainframe box; and an electronic current transformer is arranged in the master conducting loop in the fixedly-sealed terminal post and is connected with a microcomputer integrated protection measuring device assembled in the mainframe box through an interface. The components are designed through integration, modularization and generalization ways, thereby the manufacturing technologies are simplified, the structure is compact, the driving efficiency is high, the occupying space of the complete machine is reduced, the installation and the maintenance are convenient, the quality and the using performance of the product are obviously improved, and the intelligentized control of the integrated measuring protection can be achieved.
Description
Technical field
The present invention relates to a kind of indoor HVAC vacuum circuit breaker, particularly a kind of 12Kv～24Kv that is applicable to, the small stationary side-installed vacuum circuit breaker in the 50Hz three-phase alternating current electrical network.This vacuum circuit-breaker provides the vacuum circuit-breaker of high reliability of new generation, and the standards and norms with relevant publication unanimities such as GB, DL and IEC are followed in its manufacturing.
Background technology
At present, the circuit breaker of domestic production is subjected to that its structure influence overall dimensions are big, air and compound inslation is more, the transmission mechanism less stable, the closing rebound of some circuit breaker is big, can be up to 2ms, separating brake bounce-back amplitude is also big, can be up to specified more than 30% of distance of opening, the circuit breaker technical indicator is low, especially has problems such as mechanical chain imperfection.Though external circuit breaker technical indicator of producing is higher, its manufacturing process complexity, variety of components is many, and volume is big, the cost height, price is very expensive, installs, maintenance difficulties is bigger.Therefore, along with the development of electricity market and demand, high-voltage switch gear development of technology, also just accelerated to some technical parameter height, the life-span is long, volume is little, the research of the vacuum circuit-breaker of dependable performance and popularizing.
As patent announcement number for CN100369172C " vacuum circuit-breaker ", patent announcement number for all disclosing side-installed vacuum circuit breaker in CN2686078Y " side-mounted indoor high-voltage vacuum circuit breaker ", the patent announcement patent documentations such as " a kind of band directly move the isolating switch vacuum circuit-breaker " number for CN2924764Y.These vacuum circuit-breakers have two critical components: first vacuum interrupter, initial stage, its live part exposed fully in air, its insulation level will be along with airborne humidity, dust fluctuation, or in transportation, mechanically broken because of carelessness, sometimes insect can run into, and insulation level is quite unreliable.Later stage partly isolates electrification in high voltage; use telescopic epoxy resin, vacuum interrupter is protected, insulation level improves; but this sleeve is not wrapped electrification in high voltage part (primary circuit) fully, and the inside also can be subjected to the influence of dust, insect and humidity etc.Vacuum interrupter with the primary circuit part is whole has wrapped, the solid envelope that insulate makes insulation level that large increase arranged in the recent period.But the insulation of this vacuum interrupter is sealed admittedly, and arc control device necessarily require miniaturization, just is not easy heating more because of resistance is more little, will prevent the softening of pole.It two is operating mechanisms., two kinds of structural shapes are generally arranged: a kind of for the matched special operating mechanism of integral type, it is that a kind of circuit breaker is joined by a kind of mechanism, and is more single, it is to manufacturing mass and product versatility has brought very big inconvenience; Another kind is the mechanism of split type adapted, and its mechanism's volume is bigger, and compact inadequately, the modular construction that has is a weldment, and machining accuracy is relatively poor relatively, and great majority need carry out the secondary adjustment before using.The spring operating mechanism of above-mentioned two kinds of patterns can not be general between the two.The stroke of the spring operating mechanism of the similar vacuum circuit-breaker in existing home and abroad is all less, does not possess the mechanical interlocking function.
The above-mentioned critical component of existing vacuum circuit-breaker is because manufacturing process is comparatively complicated, and the installation, maintenance difficulty is bigger, and price is expensive.Cause vacuum circuit-breaker to have defectives such as volume is big, machinery driving efficiency is low, poor reliability, do not satisfy the requirement of volume miniaturization to vacuum circuit-breaker, element generalization, stable performanceization, easy to maintenanceization, manufacturing cost economization, finish the circuit breaker branch, disconnected operation can't reach the expection ideal effect.
The above-mentioned defective that the inventor once existed at existing vacuum circuit-breaker critical component, design patent announcement number a kind of " small size spring operating mechanism for vacuum circuit breaker " for CN100380553C, this device comprises that mainframe box and assembling energy storage motor assembly, travel switch assembly, auxiliary switch, the two ends on it are equipped with the energy storage cam pack of energy storage connecting lever and hang over combined floodgate energy-stored spring, divide-shut brake indication component, separating brake overcurrent release, combined floodgate release, kinematic link assembly on the connecting lever.Adopt in its energy storage motor assembly and hand over, DC dual-purpose energy storage integrated electric motor, two groups of reciprocal worm gears are set on the case inner segment of drive of motor gearbox output shaft, gear overrunning clutch, the worm engaging of the worm gear of worm gear freewheel clutch and grafting handle, the gear of gear overrunning clutch is meshed with the driven wheel of motor, the pinion that is provided with on the section outside the case of drive of motor gearbox output shaft is meshed with the gear wheel on being assembled in camshaft, gear wheel the check flywheel is set in interior week, the flywheel body that is fixed on the camshaft is hinged with ratchet, and embeds or leave ratchet all in the gear wheel by the collision block control ratchet that lifts that is assembled in the elasticity ejector pin in the flywheel body slotted eye and be hinged on the right mounting panel.Because this operating mechanism adopts the dual-purpose energy storage integrated electric motor of AC and DC, by two groups of reciprocal freewheel clutches in the motor gearbox, so both can realize electric energy-storedly, manually energy storage is independent of each other again.This device can oppositely be installed again in the forward installation, to satisfy the different input position requirement of each circuit breaker, can divide slowly when mating with circuit breaker, close slowly, and its input torque and output torque ratio are big, the mechanical efficiency height.The energy storage gear wheel adopts built-in check flywheel structure in addition; after the combined floodgate energy-stored spring is crossed the dead point; built-in ratchet lifts automatically at each accurate internal tooth that ratchet lifts under the effect of collision block the five tooth papillaes wheel in week in the gear wheel; input gear wheel and energy storage camshaft are broken away from; shorten energy storage time, effectively protected motor and energy storage cam pack.Its compact conformation, volume is little, reduce the volume of whole circuit breaker, also be convenient to install, debug, after energy storage finishes, the ratchet of the check flywheel in the energy storage gear wheel can lift automatically, accurate positioning between parts, safe and reliable to operation, highly versatile, wide accommodation has satisfied the designing requirement of structure miniaturization, production seriation preferably.Solved simultaneously other spring operating mechanism effectively when being used for the very big circuit breaker of storage resultant pressure requirement, the release merit is not enough, thereby causes the difficult problem that release burns, circuit breaker is refused branch.
But also there is not one to be to adopt the dual-purpose energy storage integrated electric motor of AC and DC to drive the vacuum circuit-breaker that the small size spring operating mechanism of also realizing manual energy storage and electric energy-stored automatic clutch is simultaneously controlled the miniaturized vacuum arc control device with the solid seal structure of insulation up to now.
Summary of the invention
The purpose of this invention is to provide a kind of fixed side-installed vacuum circuit breaker; it has solved the manufacturing process complexity that existing vacuum circuit-breaker exists; variety of components is many; poor reliability; defectives such as the installation, maintenance difficulty is big; its Component Design is integrated, modularization, generalization; thereby simplified manufacturing technique has compact conformation, reduces complete machine and takes up room; be convenient to the characteristics of installation, maintenance; guarantee the security reliability of operation, increase the service life, significantly improve product quality and serviceability; increase aesthetic appearance, help realizing the intellectuality control of composite measurement protection.
The technical solution adopted in the present invention is: this fixed side-installed vacuum circuit breaker comprises and is provided with binding post; separating brake interlocking device; the mainframe box of auxiliary switch group and oil buffer; be assembled in the spring operating mechanism and the vacuum interrupter that is connected by output four connecting rods of mainframe box; its technical essential is: described spring operating mechanism adopts small size spring operating mechanism for vacuum circuit breaker; to be assembled in after the described small size spring operating mechanism modularization in the front end casing of described mainframe box; and adopt and hand over; DC dual-purpose energy storage integrated electric motor; by the opposite reciprocal freewheel clutch of two groups of direction of rotation in the motor gearbox; realize manual energy storage and electric energy-stored automatic clutch; gear wheel on pinion on the motor output shaft and the energy storage camshaft directly meshes; described vacuum interrupter adopt miniaturization one-step seal-exhaust pottery arc control device and and main conductive circuit insulate fully in pole; the movable contact of described vacuum interrupter joins by contact pressure spring and the operation insulator that is flexible coupling with the control of described main conductive circuit; the main shaft that is fixed on the connecting lever group of described operation insulator external part and described output four connecting rods is hinged; the electronic current mutual inductor of being made up of Luo-coil is set in the main conductive circuit in the pole; the described electronic current mutual inductor computer integrated protection measurement mechanism interior with being assembled in mainframe box is connected by interface; described pole vertically is arranged on the back side stand of mainframe box; one end of the main shaft of described output four connecting rods is assembled with the tripping spring that is fixed on the mainframe box link plate, and the output rocking arm of the other end of described output four connecting rods and described small size spring operating mechanism bottom is hinged.
The mutual vertical arrangement setting in plane, axis place of pole on the plane, front end cabinet panel place of described mainframe box and the back side stand that vertically is arranged in mainframe box.
Advantage and good effect that the present invention has are: because the critical component spring operating mechanism of this vacuum circuit-breaker adopts the inventor's patent formerly " small size spring operating mechanism for vacuum circuit breaker (notification number is CN100380553C) ", and will be assembled in after its modularization in the front end casing of mainframe box, realize manual energy storage and electric energy-stored automatic clutch, thereby simplified manufacturing technique, it solves the manufacturing process complexity that existing vacuum circuit-breaker exists, variety of components is many, machinery driving efficiency is low, poor reliability, volume is big, install, defectives such as maintenance difficulty is big, make its compact conformation, transmission efficiency improves, obviously reduce complete machine and take up room, be convenient to more install, maintenance; Another critical component vacuum interrupter adopt one-step seal-exhaust pottery arc control device and and the main conductive circuit that the computer integrated protection measurement mechanism reaches the electronic current mutual inductor of being made up of Luo-coil that is connected with this device be set insulate fully in pole; its Component Design is integrated; modularization; generalization; this can satisfy the electric of insulation pole itself; the machinery requirement; can guarantee the security reliability moved again; increase the service life; significantly improve vacuum circuit-breaker quality and serviceability; increase aesthetic appearance, also help realizing the intellectuality control of composite measurement protection.
Adopt small size spring operating mechanism manual and electronic automatic clutch, make the energy of energy-stored spring pass to the main shaft of exporting four connecting rods by cam, control the moving contact of the miniaturized vacuum arc control device of insulation in pole by the connecting lever group of transmission mechanism, finish circuit breaker branch, disconnected, reached the expection ideal effect, obviously improved China's operation of power networks quality and stability, guarantee power equipment and personal safety.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a kind of concrete structure schematic diagram of the present invention.
Fig. 2 is the cutaway view of Fig. 1 along the A-A line.
Fig. 3 is the cutaway view of Fig. 2 along the B-B line.
Sequence number explanation among the figure: 1 small size spring operating mechanism for vacuum circuit breaker; 2 modular controllers; 3 mainframe boxes; 4 binding posts; 5 separating brake interlocking devices; 6 auxiliary switch groups; 7 output shaft interlocking shafts; 8 oil buffers; 9 output rocking arms; 10 contact pressure springs and operation insulator; 11 poles; 12 are flexible coupling; 13 link plates; 14 tripping springs; 15 main shafts; 16 connecting lever groups; 17 supporters; 18 outputs, four connecting rods; 19 microcomputer composite measurement protective devices; 20 electronic current mutual inductors.
Embodiment
Describe concrete structure of the present invention in detail according to Fig. 1～3.This fixed side-installed vacuum circuit breaker comprises mainframe box 3, is assembled in the modular controller 2 of mainframe box 3, binding post 4, separating brake interlocking device 5, auxiliary switch group 6, output shaft interlocking shaft 7, oil buffer 8, spring operating mechanism, output four connecting rods 18, vacuum interrupter and parts such as contact pressure spring and operation insulator 10 thereof.Critical component spring operating mechanism in this device adopts the inventor's patent formerly " small size spring operating mechanism for vacuum circuit breaker 1 (patent announcement number be CN100380553C) ", will be assembled in after its modularization in the front end casing of mainframe box 3; Another critical component vacuum interrupter adopts miniaturization one-step seal-exhaust pottery arc control device.Vacuum interrupter and main conductive circuit insulate fully in pole 11, and pole 11 vertically is arranged on the back side stand of mainframe box 3.The mutual vertical arrangement setting in plane, axis place of pole 11 on the plane, front end cabinet panel place of mainframe box 3 and the back side stand that vertically is arranged in mainframe box 3.
The concrete structure of its small size spring operating mechanism for vacuum circuit breaker 1 is disclosed in the patent specification of bulletin on April 9th, 2008 in detail.Because of it adopts the dual-purpose energy storage integrated electric motor of AC and DC, by the opposite reciprocal freewheel clutch of two groups of direction of rotation in the motor gearbox, both can realize electric energy-stored, manually energy storage again, so can realize manual energy storage and electric energy-stored automatic clutch, manual, electronic being independent of each other.Gear wheel on pinion on the motor output shaft and the energy storage camshaft directly meshes, compact conformation, and volume is little, can reduce the volume of whole circuit breaker, also be convenient to install, debug, thereby the structure that helps circuit breaker develops to the direction of volume miniaturization.It closes, separating brake respectively has magnet control and two kinds of modes of operation of hand push button control, and has overcurrent dropout defencive function, and operating power is direct current 110V, 220V, exchanges 110V, 220V, and is safe and reliable to operation.But this device forward is installed and can oppositely be installed again, to satisfy the different input position requirement of each circuit breaker, can divide slowly when mating with circuit breaker, close slowly, and its input torque and output torque ratio are big, the mechanical efficiency height.When circuit breaker requires to increase to the combined floodgate merit, need not change the main parts size of operating mechanism, only need change the combined floodgate energy-stored spring according to actual needs, the combined floodgate merit that strengthens the combined floodgate energy-stored spring just can satisfy the instructions for use of circuit breaker, make the circuit breaker performance more stable, highly versatile, accommodation is wider.After energy storage finished, the ratchet of the check flywheel in the energy storage gear wheel can lift automatically, and accurate positioning between each parts is safe and reliable to operation, did not need to adjust after the debugging of dispatching from the factory again, and can reach the requirement of not overhauling in 8 years.The energy storage gear wheel adopts built-in check flywheel structure; after the combined floodgate energy-stored spring is crossed the dead point; built-in ratchet lifts automatically at each accurate internal tooth that ratchet lifts under the effect of collision block the five tooth papillaes wheel in week in the gear wheel; input gear wheel and energy storage camshaft are broken away from; shorten energy storage time, effectively protected motor and energy storage cam pack.This operating mechanism adopts the big cam and the kinematic link assembly of optimal design, and the kinematic link assembly is connected with interlocking device, makes that combined floodgate is more reliable, tripping force is littler, is specially adapted to storing up the very big circuit breaker of resultant pressure requirement.Adopt common technology to realize electrical interlock between main conductive circuit and the tripping electromagnet coil electric loop.Also adopt common technology to carry out mechanical interlocking between the transmission mechanism of small size spring operating mechanism 1 and pole 11.
Its vacuum interrupter adopts one-step seal-exhaust pottery arc control device, and as arc extinguishing and dielectric, arc control device have high vacuum degree with vacuum.When dynamic and static contact during charged separating brake, will produce vacuum arc between contact under the operating mechanism effect.Simultaneously, because the special construction of contact impels vacuum arc to form diffused, and make electric arc be evenly distributed in the contact surface burning, keep low arc voltage, when the electric current natural zero-crossing, residual ion, electronics and metallic vapour just can be compound in the time of the microsecond order of magnitude or be condensed upon on contact surface and the radome, the medium dielectric strength of arc control device fracture is resumed very soon, thereby electric arc is extinguished, and reaches breaking capacity, makes vacuum circuit-breaker have strong and stable drop-out current ability.
Its vacuum interrupter and main conductive circuit insulate fully in pole 11, can not only strengthen anti-creepage ability, reducing dust greatly builds up on the surface of one-step seal-exhaust pottery arc control device, prevent that vacuum interrupter is subjected to the damage of external factor, even and can guarantee under damp and hot and pollution severity environment, also can present high-impedance state to voltage effects.
The movable contact of vacuum interrupter joins by contact pressure spring and the operation insulator 10 that is flexible coupling with main conductive circuit control, and the connecting lever group 16 that is fixed on operation insulator external part is hinged with the main shaft of output four connecting rods 18.The electronic current mutual inductor of being made up of Luo-coil 20 is set in the main conductive circuit in the pole 11; electronic current mutual inductor 20 is connected by interface with computer integrated protection measurement mechanism 19 in being assembled in mainframe box 3; have from detection, self diagnosis, handle function certainly; can accurately measure parameters such as electric current, voltage, frequency; accurate rated output; the protection definite value can be set flexibly; and be provided with standard communication interface; can export analog signal or digital signal; be connected with communication system by optical fiber, realize Long-distance Control.Interface has just been debugged before product export and has been finished, and the user no longer needs to consider both interface parameters couplings, and is very convenient to use.Pole 11 vertically is arranged on the back side stand of mainframe box 3, an end of exporting the main shaft 15 of four connecting rods 18 is assembled with the tripping spring 14 that is fixed on the mainframe box link plate 13, and the other end and the output rocking arm 9 bottom the small size spring operating mechanism of exporting four connecting rods 18 are hinged.
Manual operation function comprises manual energy storage, closing by hand, manual brake separating, and it uses in the time of can only and detecting in the unloaded debugging of circuit breaker.Manually energy storage: insert manual energy storage position with special-purpose energy storage handle, clockwise rotate energy storage and put in place, until from energy storage indication observation window, seeing energy storage indicia point " energy storage ".Closing by hand: press the switch knob on the circuit breaker panel.Switching-in spring can not have the use in particular cases of power supply at the circuit breaker secondary circuit.Manual brake separating: by the opening button on the circuit breaker panel: can under the situation of urgent need, offer the operator and directly circuit breaker be carried out sub-switching operation.
That the electric operating function comprises is electric energy-stored, electric switch-on, electronic separating brake.Electric energy-stored: the in running order back of circuit breaker (no matter whether the main conductive circuit of circuit breaker is charged), the circuit of energy storage motor is just in running order, the power connection energy storage motor can be switched on automatically and be carried out the stored energy operation of switching-in spring, after the switching-in spring energy storage put in place, the energy storage position switch of circuit breaker inside can cut off the circuit of energy storage motor automatically.Electric switch-on: by being connected to the operation of the electrical contact (as electric button) in the breaker closing loop, connect the breaker closing magnet spool, finish closing operation.Electronic separating brake: two kinds of electronic separating brake modes can be provided: the tripping electromagnet by the independent current source power supply carries out electronic separating brake and carries out electronic separating brake by overcurrent trip.Carrying out electronic sub-switching operation person by the tripping electromagnet of independent current source power supply can be by connecting the operation by the electrical contact (as electric button) in the sub-gate circuit of the tripping electromagnet money circle of independent current source power supply of circuit breaker, connect the coil of circuit breaker, finish sub-switching operation by the tripping electromagnet of independent current source power supply.
This device to the solution of closing rebound and separating brake bounce-back is: the spring rate by optimized choice contact pressure spring is determined contact pressure, reduces the moving-mass of moved end, is selected the action time of best closing speed and increase contact, raising arc control device that methods such as integral rigidity neutral, that strengthen frame are solved the closing rebound problem.Cam is the main element of mechanism's output torque, and in order to improve mechanical efficiency, we have solved inefficient this problem by adjusting cam pressure angle and cam curve. solved separating brake bounce-back problem by the appropriate design oil buffer.
This device to the solution of miniaturization reliability and Insulation Problems is: aspect selection, should consider to guarantee the sufficient intensity of part, consider the material of easily purchasing commonly used again, and certain versatility is arranged, avoid the selection kind too much, indiscriminate excessively, make each parts minimum, thereby reach the complete machine miniaturization.Current-carrying part solves Insulation Problems and complete machine miniaturization by multiple solid insulation structure.
Claims (2)
1. fixed side-installed vacuum circuit breaker; comprise and be provided with binding post; separating brake interlocking device; the mainframe box of auxiliary switch group and oil buffer; be assembled in the spring operating mechanism and the vacuum interrupter that is connected by output four connecting rods of mainframe box; it is characterized in that: described spring operating mechanism adopts small size spring operating mechanism for vacuum circuit breaker; to be assembled in after the described small size spring operating mechanism modularization in the front end casing of described mainframe box; and adopt and hand over; DC dual-purpose energy storage integrated electric motor; by the opposite reciprocal freewheel clutch of two groups of direction of rotation in the motor gearbox; realize manual energy storage and electric energy-stored automatic clutch; gear wheel on pinion on the motor output shaft and the energy storage camshaft directly meshes; described vacuum interrupter adopt miniaturization one-step seal-exhaust pottery arc control device and and main conductive circuit insulate fully in pole; the movable contact of described vacuum interrupter joins by contact pressure spring and the operation insulator that is flexible coupling with the control of described main conductive circuit; the main shaft that is fixed on the connecting lever group of described operation insulator external part and described output four connecting rods is hinged; the electronic current mutual inductor of being made up of Luo-coil is set in the main conductive circuit in the pole; the described electronic current mutual inductor computer integrated protection measurement mechanism interior with being assembled in mainframe box is connected by interface; described pole vertically is arranged on the back side stand of mainframe box; one end of the main shaft of described output four connecting rods is assembled with the tripping spring that is fixed on the mainframe box link plate, and the output rocking arm of the other end of described output four connecting rods and described small size spring operating mechanism bottom is hinged.
2. fixed side-installed vacuum circuit breaker according to claim 1 is characterized in that: the mutual vertical arrangement setting in plane, axis place of pole on the plane, front end cabinet panel place of described mainframe box and the back side stand that vertically is arranged in mainframe box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810229103XA CN101425425B (en) | 2008-11-28 | 2008-11-28 | Fixed side-installed vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810229103XA CN101425425B (en) | 2008-11-28 | 2008-11-28 | Fixed side-installed vacuum circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101425425A CN101425425A (en) | 2009-05-06 |
| CN101425425B true CN101425425B (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810229103XA Expired - Fee Related CN101425425B (en) | 2008-11-28 | 2008-11-28 | Fixed side-installed vacuum circuit breaker |
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| CN (1) | CN101425425B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409273B (en) * | 2014-10-29 | 2016-07-06 | 浙江道笃智能开关有限公司 | Pole type High-Voltage Electrical Appliances cubicle switch |
| CN104882327A (en) * | 2015-06-04 | 2015-09-02 | 宁波耐森电气科技有限公司 | Side-mounted circuit breaker used on gas-insulated switchgear and operating principle thereof |
| CN105845489A (en) * | 2016-05-30 | 2016-08-10 | 宁波甬新东方电气有限公司 | Wall-mounted type three-phase longitudinally-arranged medium-voltage vacuum circuit breaker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0878816A2 (en) * | 1997-05-14 | 1998-11-18 | ABBPATENT GmbH | Metal-clad gas insulated power switch |
| CN201327791Y (en) * | 2008-11-28 | 2009-10-14 | 姜全海 | Fixed side-mounted type vacuum circuit breaker |
-
2008
- 2008-11-28 CN CN200810229103XA patent/CN101425425B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0878816A2 (en) * | 1997-05-14 | 1998-11-18 | ABBPATENT GmbH | Metal-clad gas insulated power switch |
| CN201327791Y (en) * | 2008-11-28 | 2009-10-14 | 姜全海 | Fixed side-mounted type vacuum circuit breaker |
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| CN101425425A (en) | 2009-05-06 |
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Effective date of registration: 20170406 Address after: 528000 Guangdong Province, Foshan city Shunde District Lunjiao Chung Hei Lunjiao intensive industrial zone, Industrial Avenue, New South Road two (Xi building Fengqi Garment Accessories Co. Ltd four) Patentee after: Shunde city Foshan District Shun Chi Electric Co., Ltd. Address before: 121000 Jinzhou City, Liaoning province Linghe District Jiefang Road five No. fourteen in the Jinzhou real estate development company Liu Meizhuan Patentee before: Jiang Quanhai |
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Granted publication date: 20111026 Termination date: 20201128 |