CN105742983A - Intelligent switch cabinet - Google Patents
Intelligent switch cabinet Download PDFInfo
- Publication number
- CN105742983A CN105742983A CN201610247625.7A CN201610247625A CN105742983A CN 105742983 A CN105742983 A CN 105742983A CN 201610247625 A CN201610247625 A CN 201610247625A CN 105742983 A CN105742983 A CN 105742983A
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- plug
- supervisory equipment
- cabinet
- described protection
- circuit
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- 238000004891 communication Methods 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 5
- 238000012806 monitoring device Methods 0.000 abstract 3
- 230000009191 jumping Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 7
- 238000005286 illumination Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- H02J13/0006—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
Abstract
The invention discloses an intelligent switch cabinet. The intelligent switch cabinet comprises a cabinet body and also comprises a protection monitoring device, wherein the protection monitoring device is arranged in the cabinet body, and an operation loop is arranged in the protection monitoring device and comprises a closing circuit and a tripping circuit. No matter when the intelligent switch cabinet locally controls or remotely controls, a circuit breaker is tripped by protection action if a short-circuit fault occurs after manual or remote closing; and even though a terminal B08 of the device is communicated with +WC, the closing loop is cut off by TBJ1 and then cannot be closed, and thus, the jumping phenomenon of the circuit breaker is effectively prevented.
Description
Technical field
The present invention relates to electrical equipment, more particularly, it relates to a kind of switch cubicle.
Background technology
Switch cubicle is a kind of electrical equipment, and switch cubicle outside line is introduced in cabinet master switch, switchs subsequently into sub-control, and each branch needs to arrange by it.Such as instrument, automatic control, motor magnetic switch, various A.C. contactors etc., what have also sets altitude chamber and low-pressure chamber switch cubicle, is provided with high voltage bus, such as power plant etc., the low-frequency load reduction being additionally provided with as protecting capital equipment having.
The Main Function of switch cubicle is to carry out generating electricity in power system, transmit electricity, in the process of distribution and electric energy conversion, carry out folding, control and protection electrical equipment.Parts in switch cubicle are mainly made up of chopper, isolation switch, on-load switch, operating mechanism, transformer and various protection devices etc..The sorting technique of switch cubicle is a lot, as can be divided into withdraw-type switch cabinet and fixed switching cabinet by chopper mounting means；Or the difference according to cabinet body structure, open type switch cubicle, metal closed switch cabinet and metal enclosed armoured switch cabinet can be divided into；High-tension switch cabinet, Medium Voltage Switchgear and low-tension switch cabinet etc. can be divided into again according to electric pressure difference.It is primarily adapted for use in various different occasions such as power plant, transformer station, petrochemical industry, metallurgical steel rolling, industry light industry textile industry, industrial enterprise and residential quarters, skyscraper etc..
But, the operation circuit of traditional switch cubicle is generally adopted current start, voltage keeps loop to realize electric trip-preventing, anti-trip relay need to be selected according to the electric current of chopper closing loop, versatility is poor, moreover the chopper (such as the 10kV chopper of Germany AEG company, breaker tripping and closing electric current be not more than 0.2A) less for chopper breaker tripping and closing electric current is often difficulty with.
Summary of the invention
For the shortcoming of prior art, it is an object of the invention to provide a kind of intelligent switchboard, be effectively prevented generation chopper jump phenomena.
To achieve these goals; the technical scheme is that a kind of intelligent switchboard, including cabinet, also include the protection supervisory equipment being arranged in described cabinet; being provided with operation circuit in described protection supervisory equipment, described operation circuit includes closing circuit and trip(ping) circuit；；Switching current enters the B08 terminal of controller from switching switch ZK, shutting-brake control switch KK, comes out to control power supply from B09 terminal, and the break-make of operation ZK and KK completes closing operation；Tripping current controls switch KK and enters the B01 terminal of controller from switching switch ZK, tripping operation, then come out to control power supply from B04 terminal, and the break-make of operation ZK and KK completes trip operation.
As a further improvement on the present invention, in described protection supervisory equipment, independent two-way RS485 standard communication interface and two-way standard industry Ethernet interface it are provided with.
As a further improvement on the present invention; described cabinet adopts and covers the making of aluminum zine plate; the shell of described protection device is Aluminum Alloy Chassis; the plug-in unit of described protection device includes display panel, power insert, an I/O plug-in unit, the 2nd I/O plug-in unit, CPU card and exchanges plug-in unit; display panel is arranged on before cabinet; other plug-in units insert mounting means after adopting, and are followed successively by power insert, an I/O plug-in unit, the 2nd I/O plug-in unit, CPU card from left to right and exchange plug-in unit.
As a further improvement on the present invention, in described protection supervisory equipment, two-way temperature-humidity sensor it is provided with.
As a further improvement on the present invention, in described protection supervisory equipment, it is provided with two-way heater controls interface and a road air draft interface.The control of first via heater: the first Temperature Humidity Sensor being arranged on bus cable room detects the temperature T1 and humidity H1 of bus cable room, with setting value comparison, by 10s clock computing, bus cable indoor temperature is less than setting value, and humidity is more than setting value, primary heater connects startup immediately, if the about setting value of bus cable indoor temperature, humidity is less than setting value, and ambient temperature is higher than 40 degree, or when Temperature Humidity Sensor broken string, heater will not put into operation.The control of No. second heater is the same with first via operation principle, and the installation site that unique difference is Temperature Humidity Sensor is different, is mounted in breaker chamber.It is arranged on the first Temperature Humidity Sensor no broken string of bus cable room, measures temperature more than setting maximum, after 10s calculates, connect exhaust blower immediately and open exhaust outlet；As a same reason, it is arranged on the second Temperature Humidity Sensor no broken string of breaker chamber, measures temperature more than setting maximum, after 10s calculates, connect exhaust blower immediately and open exhaust outlet.
As a further improvement on the present invention; charged display and unlocking circuit it is provided with in described protection supervisory equipment; high pressure sensor in cabinet gathers bus three-phase voltage; utilize with or door compare setting value; when more than setting value 65% time, with or gate open, at this moment disconnect electromagnetic lock; the lock release lamp of intelligent apparatus extinguishes simultaneously, reminds operator's bus-bar system charged.
As a further improvement on the present invention, described protection supervisory equipment is provided with infrared human body inductive probe.
As a further improvement on the present invention, in described protection supervisory equipment, automatic illuminating delay circuit it is provided with.
Compared with prior art; intelligent switchboard of the present invention no matter controls on the spot or a distant place controls; the B08 terminal that the premise of appearance jump phenomena is device connects all the time with+WC; after manual or remote control are closed a floodgate, if at this moment there being short trouble, protection is by action tripping chopper; although the B08 terminal of device connects with+WC; but closing circuit is disconnected by TBJ1, so will not again close a floodgate, thus being effectively prevented generation chopper jump phenomena.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, structure and Advantageous Effects thereof to the present invention are described in detail.
Fig. 1 is the operation circuit circuit theory diagrams of the present invention.
Fig. 2 is the control logic chart of primary heater of the present invention.
Fig. 3 is the control logic chart of secondary heater of the present invention.
Fig. 4 is that air draft of the present invention controls logic chart.
Fig. 5 is the charged display of the present invention and unlocking logic chart.
Detailed description of the invention
In order to make the goal of the invention of the present invention, technical scheme and Advantageous Effects thereof become apparent from, below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.It should be appreciated that the detailed description of the invention described in this specification is only used to explain the present invention, it is not intended to limit the present invention.
Refer to Fig. 1, intelligent switchboard of the present invention, including cabinet and be arranged on the protection supervisory equipment in cabinet, in protection supervisory equipment, it is provided with operation circuit, operation circuit includes closing circuit and trip(ping) circuit.KK is traditional operation switch, operates for manual breaker tripping and closing, and ZK is switching switch, for controlling conversion with a distant place on the spot.When ZK is positioned at " distant place " position, connecting the power supply of remote control circuit, namely the B13 terminal of device is connected with+WC, and the power supply in manual operation loop is cut off, and closing by hand and hand trip(ping) are inoperative.Otherwise, when ZK is positioned at " on the spot " position, connects the power supply in manual operation loop, and the power supply of remote control circuit be cut off.Tn1, Tn2 terminal corresponding for protective relay Jn is determined by the corresponding protection exit control word of device, Jn can be protection exit 1-8 any one or more.No matter control on the spot or distant place control, occur that the premise of jump phenomena is that the B08 terminal of device connects all the time with+WC.After manual or remote control are closed a floodgate, if at this moment there being short trouble, protection is by action tripping chopper, although the B08 terminal of device connects with+WC, but closing circuit is disconnected by TBJ1, so will not again close a floodgate, thus being effectively prevented generation chopper jump phenomena.
Protection supervisory equipment has independent two-way RS485 standard communication interface and two-way standard industry Ethernet interface.Wherein RS485 communication interface supports IEC60870-5-103 communication protocol, and Ethernet interface supports IEC60870-5-104 communication protocol and a new generation transformer station communication standard IEC61850.Two-way port information is independent, can be configured to independent duplex network.Suggestion RS485 communication distance is less than 1200 meters.
Cabinet adopts and covers aluminum zine plate and make, and protection supervisory equipment adopts 4U, 19/2 inch standard cabinet, aluminum alloy casing, not only can install but also can install by distributing by integral embedded type.Display panel is forward-mounted, and other plug-in units insert mounting means after adopting, and backsight is power insert, I/O plug-in unit 1, I/O plug-in unit 2, CPU card from left to right successively and exchanges plug-in unit.
Protection supervisory equipment with two-way temperature-humidity sensor, the control to humidity and temperature of the two-way each complete independently.Temperature Humidity Sensor is calibrated before dispatching from the factory, without field calibration；Two-way heater is provided to control interface and a road air draft interface.Judge Temperature Humidity Sensor state, in detection automatically, put into temperature and humidity measure, when Temperature Humidity Sensor occurs abnormal, can automatic alarm.
Referring to Fig. 2, Fig. 3 and Fig. 4, when Temperature Humidity Sensor occurs abnormal, then corresponding environmental Kuznets Curves function also automatically exits from, it is prevented that abnormal startup heater and wind exhausting outlet, causes the damage of heating and exhaust equipment.
Refer to Fig. 5, LED starting voltage (kV): (0.15～0.65) specified phase voltage.Control voltage (kV) is opened in locking: 0.65 specified phase voltage.Refer to must start up locking when voltage is more than 0.65 specified phase voltage.When three-phase is simultaneously not charged, lock release lamp is bright, starts electromagnetic lock action.
Protection supervisory equipment, with infrared human body inductive probe, can automatically identify before someone rests on cabinet.When light illumination mode is that charged voice message is opened automatically, (human body stops acknowledging time, can arrange), device automatic pick illumination relay, it is provided that cabinet intraoral illumination after human body stays for some time before cabinet；When cabinet major loop is charged, device voice points out " this loop is charged " automatically；When cabinet major loop is not charged, device voice points out " power-off of this loop " automatically.When infrared induction probe detection is to having people before cabinet and continuing for some time (human body stops acknowledging time, can arrange), and automatically start illumination relay through automatic illuminating time delay.When people leaves before cabinet and continues for some time (human body leaves acknowledging time, can arrange), and it is automatically switched off cabinet intraoral illumination through automatic illuminating time-delay mechanism.
nullThe present invention existing to simulate instrument、Relay is monitoring、On the regular tap cabinet basis of control equipment，Add protection supervisory equipment (network electric power instrument、Module etc. is monitored/protected to intelligent power distribution、Network I/O)，Networked by the computer system of its network communication interface with central control room，Such that it is able to realize each voltage for distribution loop、Electric current、Active power、Reactive power、Power factor、Frequency、The electrical quantitys such as electricity are monitored and deciliter state to chopper、Fault message monitors、A deciliter state for chopper is controlled，Coordinate various perfect remote monitoring software，Thus realizing " four is distant ": (1) remote measurement: in real time system is carried out voltage by computer、Electric current、Active power、Reactive power、Power factor、Frequencies etc. constantly gather、Analyze、Process、Record，Display curve、Rod figure，Automatic report generation.(2) remote signalling: can in real time the switching values such as the running status of switch, protection act be monitored; Real time vision and automatic alarm, and the action such as the state of switch, emergency stop valve trip, excessively stream, quick-break, temperature in each cabinet is carried out real time record, printing.(3) remote control: selected the information such as corresponding station number, switch number, conjunction/tripping operation by computer screen, and the feedback of status of the switch that will select on screen is returned, and performs after confirmation, the time of real time record operation, type and switch number etc..(4) remote regulating: for setting the operational factor of various intelligent object, namely computer is according to screen operator instruction or computer according to the analysis judged result to system, and setting value and error protection value to intelligent object are remotely adjusted.The feature such as the present invention has multi-functional, digitized, networking, intellectuality, compact conformation, be easily maintained, it can meet the demand that power industry is following, has and prevents/avoid accident to occur, strengthening enterprises energy check, reduces plant maintenance and repair time, realizes the plurality of advantages such as data resource sharing.
The announcement of book and instruction according to the above description, above-mentioned embodiment can also be carried out suitable change and amendment by those skilled in the art in the invention.Therefore, the invention is not limited in detailed description of the invention disclosed and described above, should also be as some modifications and changes of the present invention falling in the scope of the claims of the present invention.Although additionally, employ some specific terms in this specification, but these terms are intended merely to convenient explanation, and the present invention does not constitute any restriction.
Claims (8)
1. an intelligent switchboard, including cabinet, it is characterised in that also include the protection supervisory equipment being arranged in described cabinet, is provided with operation circuit in described protection supervisory equipment, and described operation circuit includes closing circuit and trip(ping) circuit；Switching current enters the B08 terminal of controller from switching switch ZK, shutting-brake control switch KK, comes out to control power supply from B09 terminal, and the break-make of operation ZK and KK completes closing operation；Tripping current controls switch KK and enters the B01 terminal of controller from switching switch ZK, tripping operation, then come out to control power supply from B04 terminal, and the break-make of operation ZK and KK completes trip operation.
2. intelligent switchboard according to claim 1, it is characterised in that be provided with independent two-way RS485 standard communication interface and two-way standard industry Ethernet interface in described protection supervisory equipment.
3. intelligent switchboard according to claim 1; it is characterized in that; described cabinet adopts and covers the making of aluminum zine plate; the shell of described protection device is Aluminum Alloy Chassis; the plug-in unit of described protection device includes display panel, power insert, an I/O plug-in unit, the 2nd I/O plug-in unit, CPU card and exchanges plug-in unit; display panel is arranged on before cabinet, and other plug-in units insert mounting means after adopting, and are followed successively by power insert, an I/O plug-in unit, the 2nd I/O plug-in unit, CPU card from left to right and exchange plug-in unit.
4. intelligent switchboard according to claim 1, it is characterised in that be provided with two-way temperature-humidity sensor in described protection supervisory equipment.
5. intelligent switchboard according to claim 1, it is characterised in that be provided with two-way heater in described protection supervisory equipment and control interface and a road air draft interface.
6. intelligent switchboard according to claim 1; it is characterized in that; charged display and unlocking circuit it is provided with in described protection supervisory equipment; high pressure sensor in cabinet gathers bus three-phase voltage, utilize with or door compare setting value, when more than setting value 65% time; with or gate open; at this moment disconnecting electromagnetic lock, the lock release lamp of intelligent apparatus extinguishes simultaneously, reminds operator's bus-bar system charged.
7. intelligent switchboard according to claim 1, it is characterised in that be provided with infrared human body inductive probe on described protection supervisory equipment.
8. intelligent switchboard according to claim 7, it is characterised in that be provided with automatic illuminating delay circuit in described protection supervisory equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610247625.7A CN105742983A (en) | 2016-04-20 | 2016-04-20 | Intelligent switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610247625.7A CN105742983A (en) | 2016-04-20 | 2016-04-20 | Intelligent switch cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN105742983A true CN105742983A (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610247625.7A Pending CN105742983A (en) | 2016-04-20 | 2016-04-20 | Intelligent switch cabinet |
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| Country | Link |
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| CN (1) | CN105742983A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864577A (en) * | 2020-07-27 | 2020-10-30 | 张琴光 | Intelligent electrical cabinet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741048A (en) * | 2008-11-24 | 2010-06-16 | 射阳伟龙电气有限公司 | Electric trip-preventing circuit of voltage starting type breaker |
| CN201663094U (en) * | 2010-02-04 | 2010-12-01 | 宁波华通电器集团股份有限公司 | Vacuum circuit breaker |
| CN103457351A (en) * | 2013-02-28 | 2013-12-18 | 南京亚电电力设备有限公司 | Integrated switch cabinet intelligent operating system |
| CN205724449U (en) * | 2016-04-20 | 2016-11-23 | 吉林瀚丰电气有限公司 | A kind of intelligent switchboard |
-
2016
- 2016-04-20 CN CN201610247625.7A patent/CN105742983A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741048A (en) * | 2008-11-24 | 2010-06-16 | 射阳伟龙电气有限公司 | Electric trip-preventing circuit of voltage starting type breaker |
| CN201663094U (en) * | 2010-02-04 | 2010-12-01 | 宁波华通电器集团股份有限公司 | Vacuum circuit breaker |
| CN103457351A (en) * | 2013-02-28 | 2013-12-18 | 南京亚电电力设备有限公司 | Integrated switch cabinet intelligent operating system |
| CN205724449U (en) * | 2016-04-20 | 2016-11-23 | 吉林瀚丰电气有限公司 | A kind of intelligent switchboard |
Non-Patent Citations (1)
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| 珠海万力达电气自动化有限公司: "DM-200系列智能保护测显装置", 《百度文库，HTTPS://WENKU.BAIDU.COM/VIEW/25EB67408BD63186》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864577A (en) * | 2020-07-27 | 2020-10-30 | 张琴光 | Intelligent electrical cabinet |
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Application publication date: 20160706 |
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