CN103971984A - Intelligent vacuum circuit breaker - Google Patents
Intelligent vacuum circuit breaker Download PDFInfo
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- CN103971984A CN103971984A CN201410234719.1A CN201410234719A CN103971984A CN 103971984 A CN103971984 A CN 103971984A CN 201410234719 A CN201410234719 A CN 201410234719A CN 103971984 A CN103971984 A CN 103971984A
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Abstract
The invention discloses an intelligent vacuum circuit breaker, comprising a vacuum circuit breaker body. The intelligent vacuum circuit breaker is characterized by also comprising an intelligent controller, wherein the intelligent controller comprises a computer master control circuit as a core component; the computer master control circuit is connected with a signal detection circuit, an opening and closing drive circuit, a serial port communication circuit and a fault display circuit respectively; the serial port communication circuit is electrically connected with an I2C memory circuit and an external interface circuit respectively. The intelligent vacuum circuit breaker has the functions of auto-diagnosis, automatic protection, early maintenance, information transfer and the like, and can detect whether each parameter meets the technical requirements when the circuit breaker is put into operation, so that various faults of the circuit breaker caused by a parameter change in operation are avoided, power failure of the power supply system caused by faults of the circuit breaker and major production and equipment accidents caused by the power failure are also avoided, the intelligent vacuum circuit breaker has the advantages of being simple in structure, convenient to operate and maintain, low in construction cost, reliable to operate and the like, and is widely applicable to 3-35KV power systems for power generation, power transformation and electricity enterprises.
Description
Technical field
The present invention relates to vacuum circuit-breaker, is a kind of intelligent vacuum circuit breaker.
Background technology
Vacuum circuit-breaker is the visual plant that plays control and protective effect in power system operation; also be unique equipment of realizing electric function with mechanical movement in power transmission and transforming equipment; the primary substation in power plant in power construction, the enterprises such as all kinds of transformer stations of power grid construction and power transmission engineering and metallurgy, mine, oil all need a large amount of high voltage switchgears.Existing vacuum circuit-breaker function singleness; only has cut-out function; in the time putting into operation, control loop is not had autodiagnosis, automatically protects, safeguarded in early days and information transfer function, can not meet generating, power transformation and the requirement of the 3-35KV of electricity consumption enterprise electric power system to vacuum circuit-breaker.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, and the circuit of existing simple function is organically combined and improved, provide a kind of intelligent degree high, rational in infrastructure, convenient operating maintenance, reliable, multiple functional, the intelligent vacuum circuit breaker of applied range.
Solving the technical scheme that its technical problem adopts is: a kind of intelligent vacuum circuit breaker, comprise vacuum circuit-breaker, it is characterized in that, also comprise intelligent controller, described intelligent controller comprises that computer governor circuit is core component, computer governor circuit is connected with signal deteching circuit, on/off switch drive circuit, serial communication circuit, fault display circuit respectively, serial communication circuit respectively with I
2c memory circuit is connected with external interface circuit.
The micro-chip processor CPU of described computer governor circuit adopt have control open into, output and the microprocessor of 16 bit of the MB90F548G of Fujitsu of communication function.
Described signal deteching circuit comprises that switching signal circuit, sub-gate signal circuit, closing position signal circuit, open position signal circuit and under-voltage detection signal circuit are connected with the input of the micro-chip processor CPU of computer governor circuit respectively, switching signal circuit, sub-gate signal circuit, closing position signal circuit, open position signal circuit are identical with the structure of under-voltage detection signal circuit, include resistance and are connected with optocoupler.
Described on/off switch drive circuit comprises that combined floodgate drive circuit and separating brake drive circuit are all connected with the output of the micro-chip processor CPU of computer governor circuit, and combined floodgate drive circuit is identical with the structure of separating brake drive circuit, and driving the model of chip is M57962AL.
Described serial communication circuit comprises optocoupler U14 and serial port chip U2, be connected to the input signal end of serial port chip U2 by optocoupler U14 output output signal, serial port chip U2 is connected with the micro-chip processor CPU of computer governor circuit, as the output signal of serial port chip U2, the model of serial port chip U2 is MAX3232, and the model of optocoupler U14 is TLP521.
Described I
2the model of the storage chip U3 of C memory circuit is 24C64, is micro-chip processor CPU storage and the transmission data of computer governor circuit.
Described fault display circuit comprises closing operation fault display circuit, sub-switching operation fault display circuit, under-voltage detection failure display circuit and the position of the switch fault display circuit that structure is identical.
Intelligent breaker of the present invention compared with prior art; owing to adopting contactless element and intelligent controller to match; in the time putting into operation, there is autodiagnosis, automatically protection, safeguard and the function such as information transmission in early days; whether control loop parameters in the time putting into operation that can detect circuit breaker meets technical requirement; both avoided changing the generation of caused various faults due to parameter because circuit breaker is in operation, avoided again because circuit breaker failure causes and has a power failure and because the generation of great production and the equipment breakdown of causing that have a power failure to electric power system.The present invention has simple in structure, operation, easy to maintenance, and the advantage such as cost is low, reliable, is widely used in the 3-35KV electric power system of generating, power transformation and electricity consumption enterprise, and alternative all vacuum circuit-breakers.
Brief description of the drawings
Fig. 1 is intelligent vacuum circuit breaker structural representation of the present invention;
Fig. 2 is that schematic diagram is looked on the right side of Fig. 1;
Fig. 3 is power circuit 3 schematic diagrams of intelligent controller 16;
Fig. 4 is computer governor circuit 4 schematic diagrams of intelligent controller 16;
Fig. 5 is signal deteching circuit 5 schematic diagrams of intelligent controller 16;
Fig. 6 is on/off switch drive circuit 6 schematic diagrams of intelligent controller 16;
Fig. 7 is serial communication circuit 7 schematic diagrams of intelligent controller 16;
Fig. 8 is the I of intelligent controller 16
2c memory circuit 8 schematic diagrams;
Fig. 9 is external interface circuit 9 schematic diagrams of intelligent controller 16;
Figure 10 is fault display circuit 10 schematic diagrams of intelligent controller 16;
Figure 11 is intelligent controller 16 schematic block circuit diagram.
In figure: 3 power circuits, 4 computer governor circuits, 5 signal deteching circuits, 5-1 is under-voltage detection signal circuit, 5-2 sub-gate signal circuit, 5-3 switching signal circuit, 5-4 open position signal circuit, 5-5 closing position signal circuit, 6 on/off switch drive circuits, 6-1 combined floodgate drive circuit, 6-2 separating brake drive circuit, 7 serial communication circuits, 8 I
2c memory circuit, 9 external interface circuits, 10 fault display circuits, 10-1 closing operation fault show circuit, 10-2 sub-switching operation fault show circuit, 10-3 is under-voltage detection failure show circuit, 10-4 position of the switch fault display circuit, 11 housings, 12 chargers, 14 close a point indicating device, 15 permanent-magnet manipulating mechanisms, 16 intelligent controllers, 18 umbilical connectors, 19 auxiliary switches, 20 hands close handle, 21 counters, 22 spline spindles, 23 oil bumpers, 24 tripping springs, 25 insulators, 26 insulator pull bars, 27 transmission crank arm, 28 connecting plates, 29 main connecting levers, 30 mechanism's connecting plates, 31 manual switching-off devices.
Embodiment
The invention will be further described to utilize drawings and Examples below.
With reference to Fig. 1, Fig. 2 and Figure 11, intelligent vacuum circuit breaker of the present invention is made up of two large divisions, and vacuum circuit-breaker is identical with the vacuum circuit breaker constructions of prior art, and intelligent controller 16 is core content of the present invention.Vacuum circuit-breaker is included in the permanent-magnet manipulating mechanism 15 arranging on housing 11, the moving armature of permanent-magnet manipulating mechanism 15 and mechanism's connecting plate 30 are hinged, mechanism's connecting plate 30 is hinged with main connecting lever 29, main connecting lever 29 is hinged with connecting plate 28, connecting plate 28 is hinged with transmission crank arm 27, and transmission crank arm 27 is hinged with insulator pull bar 26.Open position: drive main connecting lever 29 through mechanism's connecting plate 30 in the time moving downward under the effect in electromagnetic force of the moving armature of permanent magnet mechanism 15, taking spline spindle 22 as rotational support, act on transmission crank arm 27 through connecting plate 28 again, transmission crank arm 27 acts on insulator pull bar by the motion of bearing pin pivot point lever, insulator pull bar is moved upward and act on vacuum interrupter.When closing position, when moving upward under the effect of electromagnetic force, the moving armature of permanent magnet mechanism 15 drives main connecting lever 19 through mechanism's connecting plate 20, taking high accuracy splined shaft 12 as rotational support, act on transmission crank arm 27 through connecting plate 18 again, transmission crank arm 27 acts on insulator pull bar 26 by the motion of bearing pin pivot point lever, insulator pull bar 26 is moved downward and act on vacuum interrupter.When open position, make the moving armature return successively of insulator pull bar 26, transmission crank arm 27, connecting plate 18, main connecting lever 19, mechanism's connecting plate 20, permanent magnet mechanism 15 at the elastic force of oppositely electric power, combined floodgate touch spring and tripping spring 24 energy storage.Also be provided with manual switching-off device 31 for the emergency opening operation in secondary operation power failure situation.
Intelligent controller 16 is placed on the housing of vacuum circuit-breaker, intelligent controller 16 comprises that computer governor circuit 4 is for core component, computer governor circuit 4 is connected with signal deteching circuit 5, on/off switch drive circuit 6, serial communication circuit 7, fault display circuit 10 respectively, serial communication circuit 7 respectively with I
2c memory circuit 8 is connected with external interface circuit 9.
With reference to Fig. 3, the power circuit 3 of intelligent controller 16 comprises AC/DC universal power module XR25/5-24, DC-DC power module SR5S5,3.3V voltage stabilizing chip AS2815.External power source, filter capacitor C21-C23, inductance L 1, the electrical connection of XR25/5-24 input; output output dual path isolation stabilized voltage power supply 5V and 24V; 5V power supply, filter capacitor C24, C25, inductance L 2, the electrical connection of SR5S5 isolation stabilized voltage power supply input; output, filter capacitor C28-C30, inductance L 4 electrical connection output DC3.3V, diode D13 oppositely accesses AS2815 input/output terminal and plays a protective role.The principle of work and power: this distributed electrical source power supply system can be changed input signal output.Input, output and working power three isolate mutually, and every part power supply is separately for each self-loop provides power supply, even if a road power failure can not affect the normal operation of other partial circuits, makes the more safe and reliable work of system.XR25 output 5V is U2-U5 after capacitor C 15-C20 filtering, and U10-U17 power supply, simultaneously for the micro-chip processor CPU of computer governor circuit 4 provides power supply signal; 24V is separately for IGBT driver module is powered in output; AS2815 output 3.3V power supply aims at the micro-chip processor CPU power supply of computer governor circuit 4.
With reference to Fig. 4, the computer governor circuit 4 of intelligent controller 16 comprises that micro-chip processor CPU and peripheral circuit form.As micro-chip processor CPU and the whole photoelectricity isolation of peripheral total interface of computer governor circuit 4 cores of intelligent controller 16, actuating force is strong, and reliability is high.Computer governor circuit 4 adopts large capacity IGBT, and crest voltage can reach 600V, and peak current can reach 160A, and with resistance-capacitance absorption.Intelligent controller 16 adopts passive or active opening into voltage, photoelectricity isolation, and antijamming capability is strong.Intelligent controller 16 all adopts technical grade raw material, guarantee to use in equipment wide temperature range,-40 DEG C-+70 DEG C, the micro-chip processor CPU of computer governor circuit 4 adopts the microprocessor of 16 bit of the MB90F548G of Fujitsu, by micro-chip processor CPU control respectively open into, output, communicate by letter.26,27 pin of the micro-chip processor CPU of computer governor circuit 4 are electrically connected with external crystal-controlled oscillation Y1; 37,38,63,64,89,90 pin respectively with filter capacitor C9, C10, C11, C12, C13, C14 electrical connection; 62 pin are electrically connected with the VIN2 pin of U14; 61 pin are electrically connected with 12 pin of U2; 60 pin are electrically connected with 7 pin of U3; 59 pin are electrically connected with 8 pin of U3; 58 pin are electrically connected with the VIN1 pin of U4; 56 pin are electrically connected with the VIN1 pin of U16; 55 pin are electrically connected with the VIN1 pin of U17; 98 pin are electrically connected with R14; 97 pin are electrically connected with the VIN1 pin of U10; 96 pin are electrically connected with R19; 95 pin are electrically connected with the VIN1 pin of U12; 94 pin are electrically connected with the VIN1 pin of U15; 93 pin are electrically connected with the VIN1 pin of U5; 36 pin are electrically connected with LED3; 35 pin are electrically connected with LED4's; 34 pin are electrically connected with LED5; 33 pin are electrically connected with LED6.
With reference to Fig. 5, the signal deteching circuit 5 of intelligent controller 16 comprises switching signal circuit 5-3, sub-gate signal circuit 5-2, closing position signal circuit 5-5, open position signal circuit 5-4 and under-voltage detection signal circuit 5-1.Described switching signal circuit 5-3 is identical with the structure of sub-gate signal circuit 5-2, closing position signal circuit 5-5, open position signal circuit 5-4, taking switching signal circuit 5-3 as example, it comprises that switching signal is electrically connected with optocoupler U16 input VIN1 through resistance R 27,5V power supply is electrically connected with optocoupler U16 output VOC through resistance R 26, and VIN2 and output VOE be ground connection respectively.When switching signal 5-3 obtains electric, form loop by resistance R 27 with optocoupler U16 input VL1 and VL2, and make optocoupler U16 output, now output VOC and VOE form loop, make VOC end become low level signal and send to the IO mouth of the micro-chip processor CPU of computer governor circuit 4 from high level, i.e. 56 pin, carry out signal processing by the micro-chip processor CPU of computer governor circuit 4; Under-voltage detection signal circuit 5-1 is made up of diode D1, resistance R 6, optocoupler U4 electrical connection; suitably adjust the resistance size of R6; the threshold voltage of under-voltage protecting circuit just can be set easily; disconnect lower than input VL1 and the VL2 of the optocoupler U4 of threshold voltage under-voltage protecting circuit 5-1 once supply voltage; thereby make output form open circuit; VOC end output high level signal is given the IO mouth of the micro-chip processor CPU of computer governor circuit 4; i.e. 58 pin, carry out signal processing by the micro-chip processor CPU of computer governor circuit 4.
With reference to Fig. 6, the combined floodgate drive circuit 6-1 of the intelligent controller 16 of intelligent controller 16 is identical with the circuit connection structure of separating brake drive circuit 6-2, taking combined floodgate drive circuit 6-1 as example: drive chip U11 as M57962AL, they are 13 years old, 14 pin are control signal end, 5V is electrically connected with IO mouth 14 pin of the micro-chip processor CPU of computer governor circuit 4 through LED 1, IO mouth 13 pin of the micro-chip processor CPU of resistance R 4 and triode Q1 electrical connection access computer governor circuit 4, in the time that 98 pin of the micro-chip processor CPU of computer governor circuit 4 are sent low level signal, + 5V, LED 1, triode Q1, GND forms loop, the access of+24V both positive and negative polarity drives 4,6 pin of chip U11, by the pressure regulation protective circuit that formed by capacitor C 32, C33, voltage-stabiliser tube D3-D7, resistance R 15, the R16 stable output required power supply+14V of IGBT and-10V, drive IGBT, insulated gate bipolar transistor Q3 carries out work.IGBT drives and adopts modular to drive, and driving chip M57962AL is that Japanese mitsubishi electric is the thick film integrated circuit that drives IGBT module to design.The operating voltage of its driver is 24V.At the photoelectrical coupler of the high isolated high voltage of the inner integrated 2500V of driver module, overcurrent protection electric current and overcurrent protection terminal, have closure short-circuit protection function.Driving chip M57962AL is a high-speed driving circuit, and driving time is only 1.5us.
With reference to Fig. 7, the serial communication circuit 7 of intelligent controller 16 comprises the signal isolation circuit that resistance R 3, optocoupler U14 and resistance R 2 form, 11 pin that are connected to serial port chip U2 by optocoupler U14 output output signal are as input signal end, the IO mouth of 12 pin of serial port chip U2 and the micro-chip processor CPU of computer governor circuit, 56 pin are connected, as the output signal of serial port chip U2, thereby make the micro-chip processor of host computer and computer governor circuit carry out two-way communication; The be electrically connected to form peripheral circuit of the normal work of serial port chip U2 of capacitor C 4-C8 and serial port chip U2.Serial port chip U2 is MAX3232; Optocoupler U14 is TLP521, and the signal transmission that it acts between circuit, makes it front end and load is isolated completely, and object is to increase fail safe, reduces circuit and disturbs, and simplifies circuit design.Isolation voltage reaches 2500 Vrms, meets system needs completely.
With reference to Fig. 8, the I of intelligent controller 16
2c memory circuit 8 comprises that resistance R 4, R5, storage chip U3 form electrical connection, and resistance R 4, R5 use as pull-up resistor, ensures the correctness of signal transmission.The micro-chip processor CPU of computer governor circuit 4 deposits the significant data of needs storage in storage chip U3 in by 7,8 pin of storage chip U3.Thereby significant data is preserved the in the situation that of dead electricity, in the time that the micro-chip processor CPU of computer governor circuit 4 needs these data, then transmitted to the micro-chip processor CPU of computer governor circuit 4 by 7,8 pin of storage chip U3.Storage chip U3 model is that 24C64 is the memory device based on I2C-BUS, follows two-wire system agreement, and it is convenient that it has interface, volume is little, data power down such as does not lose at the feature, can store 64K byte data, in instrument and meter and industrial automatic control, gets a lot of applications.
With reference to Fig. 9, the external interface circuit 9 of intelligent controller 16 comprises switching signal, sub-gate signal, on/off switch signal common port altogether, auxiliary switch HQ+, auxiliary switch TQ+, power switch HQ, separating brake power supply TQ, on/off switch power supply common port HQ-, TQ-, supply voltage 220V, power supply ground VGND.On/off switch signal common port, on/off switch power supply common port and power supply the common ground that is connected; The earth is connected to circuit breaker metal shell; Switching signal is electrically connected with switching signal circuit 5-3; Sub-gate signal is electrically connected with sub-gate signal circuit 5-2; Auxiliary switch HQ+ is electrically connected with closing position signal circuit 5-5; Auxiliary switch TQ+ is electrically connected with open position signal circuit 5-4; Power switch HQ is electrically connected with combined floodgate drive circuit 6-1; Separating brake power supply TQ is electrically connected with separating brake drive circuit 6-2.
With reference to Figure 10, the fault display circuit 10 of intelligent controller 16 comprises 36 pin of the micro-chip processor CPU of DC5V, resistance R 30, LED 3, the computer governor circuit 4 closing operation fault display circuit 10-1 that is electrically connected to form; 35 pin of the micro-chip processor CPU of DC5V, resistance R 31, LED 4, the computer governor circuit 4 sub-switching operation fault display circuit 10-2 that is electrically connected to form; 34 pin of the micro-chip processor CPU of DC5V, resistance R 32, LED 5, the computer governor circuit 4 under-voltage detection failure display circuit 10-3 that is electrically connected to form; 33 pin of the micro-chip processor CPU of DC5V, resistance R 33, LED 6, computer governor circuit 4 position of the switch fault display circuit 10-4 that is electrically connected to form.The structure of above 4 fault display circuits is identical, taking closing operation fault display circuit 10-1 closing operation fault show circuit as example: in the time of the 36 pin output low level of the micro-chip processor CPU of computer governor circuit 4, fault display lamp, be that light-emitting diode lights, the position that facilitates alert fault to occur.
Intelligent controller function of the present invention is as follows:
(1) on/off switch abbreviated functional description: when having after outside on/off switch signal access to plant, the micro-chip processor CPU of computer governor circuit 4 judges the correctness of signal, if correctly exported through optocoupler from controlling pin, drive the conducting of IGBT gate pole, thereby make the coil energized circuit conducting of breaker permanent magnet control mechanism 15 carry out on/off switch operation;
(2) open into function: open into function and mainly refer to switch position signal and manual opening-closing order, after collecting by switch auxiliary contact, by light every, enter the position of the micro-chip processor CPU identification switch of computer governor circuit 4;
(3) communication function: carry RS232 serial communication interface, can directly be connected with computer, under host computer debugging software, its parameter and definite value are arranged.The baud rate of communication is made as 9600;
(4) fault display circuit comprises closing operation fault display circuit, sub-switching operation fault display circuit, under-voltage detection failure display circuit and position of the switch fault display circuit.Can realize respectively that closing operation is unsuccessful, sub-switching operation is unsuccessful, the alarm when abnormal of under-voltage detection failure and the position of the switch;
(5) anti-bouncing function: press and continue the state that maintenance is pressed when switch knob, device can close a floodgate after collecting the order of closing a floodgate immediately, and still device still having detected that the order of closing a floodgate exists after a delay time.Intelligent controller in this time driving switch separating brake immediately.
Intelligent vacuum circuit breaker of the present invention has: rapidity adds the effect of reliability, make vacuum circuit-breaker control loop all in the monitoring state, no matter vacuum circuit-breaker at the voltage of closing position or its control circuit of open position all among monitoring, as long as changing, parameters exceedes set point, device itself just passes through voice, light mode is notified operating personnel, thereby avoid only after circuit breaker breaks down, keeping in repair or changing phenomenon, greatly extend the useful life of vacuum circuit-breaker, also stopped the large economic loss of tool causing to user because of the generation of vacuum circuit-breaker internal fault.
The fault that intelligent vacuum circuit breaker of the present invention can look-ahead occurs possibly, and before occurring, fault notify user to carry out ahead of time maintenance and repair with the form of voice and light, if user does not process, in the time that parameter reaches set point, intelligent controlling device is out of service from being about to circuit breaker.Thereby avoid the generation of major accident.
Claims (7)
1. an intelligent vacuum circuit breaker, comprise vacuum circuit-breaker, it is characterized in that, also comprise intelligent controller, described intelligent controller comprises that computer governor circuit is core component, computer governor circuit is connected with signal deteching circuit, on/off switch drive circuit, serial communication circuit, fault display circuit respectively, serial communication circuit respectively with I
2c memory circuit is connected with external interface circuit.
2. intelligent vacuum circuit breaker according to claim 1, is characterized in that, the micro-chip processor CPU of described computer governor circuit adopt have control open into, output and the microprocessor of 16 bit of the MB90F548G of Fujitsu of communication function.
3. intelligent vacuum circuit breaker according to claim 1, it is characterized in that, described signal deteching circuit comprises that switching signal circuit, sub-gate signal circuit, closing position signal circuit, open position signal circuit and under-voltage detection signal circuit are connected with the input of the micro-chip processor CPU of computer governor circuit respectively, switching signal circuit, sub-gate signal circuit, closing position signal circuit, open position signal circuit are identical with the structure of under-voltage detection signal circuit, include resistance and are connected with optocoupler.
4. intelligent vacuum circuit breaker according to claim 1, it is characterized in that, described on/off switch drive circuit comprises that combined floodgate drive circuit and separating brake drive circuit are all connected with the output of the micro-chip processor CPU of computer governor circuit, combined floodgate drive circuit is identical with the structure of separating brake drive circuit, and driving the model of chip is M57962AL.
5. intelligent vacuum circuit breaker according to claim 1, it is characterized in that, described serial communication circuit comprises optocoupler U14 and serial port chip U2, be connected to the input signal end of serial port chip U2 by optocoupler U14 output output signal, serial port chip U2 is connected with the micro-chip processor CPU of computer governor circuit, as the output signal of serial port chip U2, the model of serial port chip U2 is MAX3232, and the model of optocoupler U14 is TLP521.
6. intelligent vacuum circuit breaker according to claim 1, is characterized in that, described I
2the model of the storage chip U3 of C memory circuit is 24C64, is micro-chip processor CPU storage and the transmission data of computer governor circuit.
7. intelligent vacuum circuit breaker according to claim 1, it is characterized in that, described fault display circuit comprises closing operation fault display circuit, sub-switching operation fault display circuit, under-voltage detection failure display circuit and the position of the switch fault display circuit that structure is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410234719.1A CN103971984A (en) | 2014-05-30 | 2014-05-30 | Intelligent vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410234719.1A CN103971984A (en) | 2014-05-30 | 2014-05-30 | Intelligent vacuum circuit breaker |
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| Publication Number | Publication Date |
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| CN103971984A true CN103971984A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410234719.1A Pending CN103971984A (en) | 2014-05-30 | 2014-05-30 | Intelligent vacuum circuit breaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541274A (en) * | 2019-01-30 | 2019-03-29 | 山西磊源电器有限责任公司 | A kind of intelligence payment device |
| US11784467B2 (en) | 2018-12-21 | 2023-10-10 | Huawei Technologies Co., Ltd. | Power distribution equipment and power distribution system |
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| CN103123882A (en) * | 2013-02-26 | 2013-05-29 | 滁州学院 | Intelligent controller of bistable permanent-magnet vacuum circuit breaker |
| CN203352193U (en) * | 2013-06-26 | 2013-12-18 | 桂林电子科技大学 | Intelligent controller of vacuum circuit breaker phase selection operation |
| CN203859056U (en) * | 2014-05-30 | 2014-10-01 | 吉林瀚丰电气有限公司 | Intelligent vacuum circuit breaker |
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| CN1257334A (en) * | 1999-12-16 | 2000-06-21 | 常熟开关厂 | Intelligent controller for communicable plastics casing circuit breaker |
| US20090228224A1 (en) * | 2005-01-27 | 2009-09-10 | Electro Industries/Gauge Tech. | Intelligent electronic device with enhanced power quality monitoring and communications capabilities |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11784467B2 (en) | 2018-12-21 | 2023-10-10 | Huawei Technologies Co., Ltd. | Power distribution equipment and power distribution system |
| CN109541274A (en) * | 2019-01-30 | 2019-03-29 | 山西磊源电器有限责任公司 | A kind of intelligence payment device |
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Application publication date: 20140806 |