CN204696455U - One can network monitoring intelligence civil power input module - Google Patents
One can network monitoring intelligence civil power input module Download PDFInfo
- Publication number
- CN204696455U CN204696455U CN201520221292.1U CN201520221292U CN204696455U CN 204696455 U CN204696455 U CN 204696455U CN 201520221292 U CN201520221292 U CN 201520221292U CN 204696455 U CN204696455 U CN 204696455U
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- civil power
- network monitoring
- power input
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 56
- 238000004891 communication Methods 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
- 238000009826 distribution Methods 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 9
- 230000005855 radiation Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
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- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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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
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
Abstract
The utility model discloses one can network monitoring intelligence civil power input module, comprises module frames and is arranged on main road collecting unit, branch road collecting unit, instrument transformer, lightning protection device, input main switch, communication unit, display screen and the indicator light in module frames; Described module frames comprises two side plates, be placed in the front panel of upper cover plate on side plate and detachable; Described main road collecting unit and branch road collecting unit are vertically arranged on an electric quantity acquisition plate, described instrument transformer is fixed on side plate, described lightning protection device and communication unit are horizontally set on module frames rear portion by a sheet metal guide rail, and described input main switch, display screen and indicator light are all fixed on front panel; Described display screen and branch road collecting unit are connected and are connected on main road collecting unit, described main road collecting unit is all connected with communication unit by instrument transformer with branch road collecting unit, described lightning protection device is arranged on the input of communication unit, and described indicator light is arranged on the input of main road collecting unit.
Description
Technical field
The utility model relates to civil power input module, and particularly relating to one can network monitoring intelligence civil power input module.
Background technology
Along with the development that science and technology is maked rapid progress, the continuous growth of virtual and cloud computing, " comfortable, convenient, intelligent, environmental protection, energy-conservation " has just become the important measurement index of high density new room construction.And data center machine room is the foundation works of the modern information establishment, for each business provides stable, safe operational environment, and the power supply-distribution system of machine room is exactly heart and the main artery of this foundation works, for power consumption equipment load, no matter which fractional load goes wrong, the just local of impact, and distribution system goes wrong, then all equipment may be caused all can not to work.Therefore power supply-distribution system is stable, is the heart and main artery that ensure that other system plays a role and core business normally runs.
Existing civil power input module integrated level is not high, and various components and parts centralized arrangement, in airtight space, causes heat radiation to have some setbacks; Due to existing civil power input module complex structure, result also in the situation of inconvenient maintenance when a problem occurs.Existing civil power distribution module can not realize long-range network monitoring, and especially concerning some remote districts, attendant comes in and goes out inconvenience, at any time all at the scene, once be in an emergency, can not will bring a lot of difficulty to maintenance work.If a civil power input module that can realize network monitoring can be had, will bring great convenience for sharing out the work of civil power.Therefore, develop a integrated level high, structure can carry out simply again network monitoring, local display screen monitoring, Video Remote monitoring, security against fire in one civil power input module seem more and more urgent.
Utility model content
In order to overcome the shortcoming and defect existed in prior art, the utility model provides one can network monitoring intelligence civil power input module.
The utility model is achieved through the following technical solutions: one can network monitoring intelligence civil power input module, the utility model discloses one can network monitoring intelligence civil power input module, comprises module frames and is arranged on main road collecting unit, branch road collecting unit, instrument transformer, power transformer, lightning protection device, auxiliary relay, fuse, input main switch, communication unit, display screen and the indicator light in module frames; Described module frames comprises two side plates, be placed in the front panel of upper cover plate on side plate and detachable; Described main road collecting unit and branch road collecting unit are vertically arranged on an electric quantity acquisition plate, described instrument transformer is fixed on side plate, described power transformer is fixed on the side of module frames, described lightning protection device, auxiliary relay, fuse and communication unit are horizontally set on module frames rear portion by a sheet metal guide rail, and described input main switch, display screen and indicator light are all fixed on front panel; Described display screen and branch road collecting unit are connected and are connected on main road collecting unit, described main road collecting unit is all connected with communication unit by instrument transformer with branch road collecting unit, described lightning protection device is arranged on the input of communication unit, and described indicator light is arranged on the input of main road collecting unit.
Further, also comprise vertically be arranged on module frames rear left, for ground connection zero ground copper bar and be horizontally set on the main road N line copper bar of module frames rear right.
Further, the busbar system be arranged in the middle part of module frames is also comprised.
Further, described display screen is touching liquid-crystal display screen.
Further, described input main switch is fixed breaker of plastic casing, and described fixed breaker of plastic casing comprises shunt release, Alarm contactor and auxiliary contact.
Further, described communication unit is RS-485 interface.
Further, also comprise one and be fixed on transformer on side plate.
Further, described front panel is provided with handle, described front panel is also provided with the transparent draw-in groove placing Sign Board.
Further, the rear catch being arranged on module frames rear portion and also leading fast for stuck-module framework is also comprised.
Relative to prior art, of the present utility model can network monitoring intelligence civil power input module by main road collecting unit and branch road collecting unit are vertically arranged on an electric quantity acquisition plate, save the space in module frames; Instrument transformer is fixed on side plate, power transformer is fixed on the side of module frames, lightning protection device, auxiliary relay, fuse and communication unit are horizontally set on module frames rear portion by a sheet metal guide rail, while saving module frame intracorporeal space, are convenient to heat radiation and shift out maintenance; Input main switch, display screen and indicator light are all fixed on front panel, avoid each components and parts to install concentratedly as far as possible, can strengthen heat radiation; Two side plates and upper cover plate are set, instead of complete totally enclosed structure, while strengthening heat radiation, also can so that keep in repair when breaking down.Of the present utility modelly can realize the monitoring of local display screen and fire-fighting link by network monitoring intelligence civil power input module, by modular for each several part setting, both improve its integrated degree, and decreased and take up room, daily maintenance and service work can be convenient to again, its structure is simple, integrated level is high, practical, there is stronger promotion prospect.
In order to understand better and implement, describe the utility model in detail below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 be of the present utility model can the exploded perspective view of network monitoring intelligence civil power input module.
Fig. 2 be of the present utility model can the schematic front view of network monitoring intelligence civil power input module.
Fig. 3 be of the present utility model can the schematic rear view of network monitoring intelligence civil power input module.
Fig. 4 be of the present utility model can the schematic top plan view of network monitoring intelligence civil power input module.
Fig. 5 be of the present utility model can the electrical block diagram of network monitoring intelligence civil power input module.
Fig. 6 be of the present utility model can the rear catch scheme of installation of network monitoring intelligence civil power input module.
Embodiment
Refer to Fig. 1-Fig. 6, Fig. 1 be of the present utility model can the exploded perspective view of network monitoring intelligence civil power input module, Fig. 2 be of the present utility model can the schematic front view of network monitoring intelligence civil power input module, Fig. 3 be of the present utility model can the schematic rear view of network monitoring intelligence civil power input module, Fig. 4 be of the present utility model can the schematic top plan view of network monitoring intelligence civil power input module, Fig. 5 be of the present utility model can the electrical block diagram of network monitoring intelligence civil power input module, Fig. 6 be of the present utility model can the rear catch scheme of installation of network monitoring intelligence civil power input module.
Of the present utility model can network monitoring intelligence civil power input module, comprise module frames 10 and be arranged on main road collecting unit 1 in module frames 10, branch road collecting unit 2, instrument transformer 3, lightning protection device 4, input main switch 5, communication unit 6, display screen 7, indicator light 8, busbar system 9, zero ground copper bar 11, main road N line copper bar 12, power transformer, auxiliary relay and fuse (not shown); Module frames 10 comprises two side plates 13, be placed in the front panel 15 of upper cover plate 14 on side plate 13 and detachable; Main road collecting unit 1 and branch road collecting unit 2 are vertically arranged on an electric quantity acquisition plate 16, instrument transformer 3 is fixed on side plate 13, lightning protection device 4 and communication unit 6 are horizontally set on module frames 10 rear portion by a sheet metal guide rail, input main switch 5, display screen 7 and instruction 9 lamps are all fixed on front panel 14, the zero ground copper bar 11 for ground connection is vertically arranged on the rear left of module frames 10, main road N line copper bar 12 is horizontally set on the rear right of module frames 10, and busbar system 9 is arranged on the middle part of module frames.Display screen 7 and branch road collecting unit 2 are connected and are connected on main road collecting unit 1, main road collecting unit 1 is all connected with communication unit 6 by instrument transformer 3 with branch road collecting unit 2, lightning protection device 4 is arranged on the input of communication unit 6, and indicator light 8 is arranged on the input of main road collecting unit 1.
Particularly, display screen 7 is touching liquid-crystal display screen.Local 7 cun of display screens monitoring, display screen interface font adopts big font, greatly numeral, and rolling type interface, can penetrate by video the monitoring that the machine of elephant carries out video in 3 meters, guarantees when suspension also by real-time video monitoring service data.Input main switch 5 is fixed breaker of plastic casing.Fixed breaker of plastic casing comprises shunt release, Alarm contactor and auxiliary contact.Communication unit 6 is RS-485 interface.Also comprise one and be fixed on transformer 18 on side plate 13.Front panel 15 is provided with handle 19, front panel 15 is also provided with the transparent draw-in groove placing Sign Board.Module frames 10 rear portion is also provided with the rear catch 20 for stuck-module framework 10.
Module frames 10 rear left arranges the grounding copper bar 11 of the anti-oxidation zinc-plated pure red copper of high conduction, facilitates the ground of intermodule arrange and connect simultaneously, ensures the ground connection high security of equipment.Module frames 10 rear right arranges the main road N line copper bar 12 of anti-oxidation zinc-plated pure purple, facilitates that intermodule main road N arranges and connects, and guarantees good conduction and connectivity between main road N line, easy-to-connect safety.The middle part of module frames 10 is provided with the busbar system 9 of alternate height insulation, highly reliable anti-oxidation zinc-plated pure purple, and it has super large discharge capacity and low-loss feature, can guarantee that high conduction and non-transformer decay produce, ensure the normal operation of power supply.
Main road collecting unit 1 and branch road collecting unit 2 adopt the transformer-supplied inputting 220V, export 26V*25% deviation range, ensure the high safety of acquisition module, and the long-life uses.Of the present utility modelly can preferably adopt 0.5 class precision instrument transformer 3 by network monitoring intelligence civil power input module, collection analysis is carried out to the voltage, electric current, frequency, power factor (PF), active power etc. of main road collecting unit 1 and branch road collecting unit 2.Main road collecting unit 1 and branch road collecting unit 2 are directly powered by isolating miniature transformer, ensureing that acquisition module does not affect by it standing thunder and lightning interference, guaranteeing device security.
Communication unit 6 is RS-485 interface, by 485 PORT COM, signal is uploaded to network local double-standard switch main control module and carries out Internet Transmission and monitoring.Indicator light 8 adopts LED light, can dismantle flexibly with panel, facilitates one-stop pinpointing the problems to carry out power-off service and maintenance.
Main road collecting unit 1 adopts technical grade 32-bit microprocessor with the microprocessor of branch road collecting unit 2, speed is fast, function is strong, integrated level is high, reliability is high feature that it has.Uplink communication mouth, analog quantity channel, switching value passage have employed full isolation technology, and microprocessor is takeed good care of meticulously, and meet high-grade immunity to interference international standard, system works is reliable and stable.Detect the state feeding out loop with voltage system, not only more can reflect real the be concerned about information of user intuitively, also eliminate the great number cost of auxiliary contact simultaneously completely.Also there are monitoring busbar voltage, bus current, power factor, frequency, active power, reactive power, apparent power etc. except upper feedback status monitoring.
Of the present utility model can network monitoring intelligence civil power input module employing touching liquid-crystal display screen be display screen 7.Touching liquid-crystal display screen can to the voltage of main road, branch road, electric current, frequency, power apparent power, active power, power factor, active energy etc. are done to show, alarm range is arranged voluntarily to parameters such as superpressure, super stream, overclocking, overload simultaneously, can Realtime Alerts, the warning volume of screen and screen brightness size etc. can be set simultaneously as required.Touching liquid-crystal display screen inside adopts enlarge font design, and parameter is design of rolling, can long-range parameter of being checked display on display screen 7 by camera.Accomplish that local video monitoring is monitored with net background, dual fail-safe surveillance and control measure, guarantees where whenever keeper can be concerned about the real time information of equipment.The split type supervisory control system of top grade that Equipments Setting is man-machine interface with Large Copacity touching liquid-crystal display screen.Supervisory control system major function is as follows: the whole electrical quantitys measuring power distribution cabinet total input-wire, comprise the parameters such as three-phase current voltage, active power, reactive power, power factor, frequency, electricity, and be provided with the threshold values transfinited, and on-the-spot audible and visual alarm can be carried out when they exceed respective settings scope.Detect total input-wire on off state, and carry out alarm when separating brake.System also detectable parameter comprises: the on off state of each road output branch road, voltage detecting mode, each road export the electric current, branch road active power, electricity etc. of branch road, the above-mentioned information about power of local display, arbitrary out-of-limit value can be set, and can sound and light alarm be carried out.
Input main switch 5 is fixed breaker of plastic casing.Main road power supply selects fixed main breaker of plastic casing NSX series, and range of capacity is generally within 250A, and apolegamy thermo magnetic trip release and signal feedback, determine the high Electrical Safety of integral device, the high reliability of fire-fighting.Constrained input end all adopts the binding post of 600V, 150A, 13.5N.m screwing force to configure, and easy-to-connect is quick, and protection safety degree is high.Can generally select fixed main breaker of plastic casing by network control intelligence civil power input module input main switch 5, plug-in type is done alternative.Main switch that select is generally the T2N160N of Shi Naide breaker of plastic casing NSX series NSX160F, ABB breaker of plastic casing TMAX series.Main switch release generally selects thermo magnetic trip release, and range of capacity is generally within 250A.Output adopts friendly nation's height insulation item isolation binding post, makes the simple and convenient safety of wiring.
Lightning protection device 4 is the operating current of 0-99 count range, 0.5KA-100KA, counts in real time to number of lightning strokes, effectively can collect the frequency that fulminating or Thunder Network ring equipment scape, carries out follow-up prevention targetedly and processes.
Of the present utility modelly the front panel 15 of network monitoring intelligence civil power input module detachable be can be designed to, one-stop queueing problem and maintenance maintenance facilitated.Front panel 15 is provided with handle 19, handle 19 is the hand grip of aluminum alloy of electric conductive oxidation process, overall appearance air, and convenient installation is carried or dismounting.Front panel 15 is also provided with the transparent draw-in groove placing Sign Board, client can be facilitated to print each control switch name of name voluntarily and be positioned in draw-in groove, solve client's different identification hobby difficult problem.Electricity of the present utility model is monitored mechanical interlocked dual-power module and is also preferably provided with rear catch 20 at the rear portion of module frames 10.Rear catch 20 can stuck-module framework, and rear catch 20 has quick guide mounting structure, can first fix rear catch 20, guarantees the Fast Installation position of module, has also ensured that module can not be sagging because of weight own simultaneously.The rear catch 20 of the quick installation that module frames 10 rear portion is arranged, rear catch 20 directly inserts the fixing hole of side plate 13 correspondence, rear catch 20 is used to be fixed on by module frames 10 on the U-shaped column after rack, ensureing module frames 10 front and back stress equalization in rack, module tilt can not be directed at because only having front panel 15 stuck-module.Upper cover plate 14 can prevent from top metal part from falling in module frames 10 causing that accident is of the present utility model can preferably be adopted by module frames 10 cold bundle steel plate to make by network monitoring intelligence civil power input module, and be designed to 19 inch structural of standard, tapping screw is adopted to assemble process between main body, make assembling flexible, assembling intensity reaches 640MPa.The surface coating of module frames 10 adopts the process of insulation anti-soda acid electrostatic plastic spraying.
Relative to prior art, of the present utility model can network monitoring intelligence civil power input module by main road collecting unit and branch road collecting unit are vertically arranged on an electric quantity acquisition plate, save the space in module frames; Instrument transformer is fixed on side plate, power transformer is fixed on the side of module frames, lightning protection device, auxiliary relay, fuse and communication unit are horizontally set on module frames rear portion by a sheet metal guide rail, while saving module frame intracorporeal space, are convenient to heat radiation and shift out maintenance; Input main switch, display screen and indicator light are all fixed on front panel, avoid each components and parts to install concentratedly as far as possible, can strengthen heat radiation; Two side plates and upper cover plate are set, instead of complete totally enclosed structure, while strengthening heat radiation, also can so that keep in repair when breaking down.Of the present utility modelly can realize the monitoring of local display screen and fire-fighting link by network monitoring intelligence civil power input module, by modular for each several part setting, both improve its integrated degree, and decreased and take up room, daily maintenance and service work can be convenient to again, its structure is simple, integrated level is high, practical, there is stronger promotion prospect.
Of the present utility modelly main road collecting unit and branch road collecting unit can be set network monitoring intelligence civil power input module, configuration touching liquid-crystal display screen and 32-bit microprocessor, accomplish to monitor every power parameter running status in real time, monitor by local display screen, also by the data that video monitoring display screen rolls, also network remote monitoring can be realized.By video, this locality, network three kinds of different monitoring modes to reach effective management of real-time monitoring to whole distribution system and running quality, and the Long-distance Control of networking and management, help user optimization network data center, strengthen managing power consumption, improve server rack operational efficiency, realize comprehensive green IDC and reliable guarantee is provided.The mode of operation of its modular structure, clean and tidy outward appearance, summary simultaneously, makes complicated system become simple, has the control ability of high safety.Be mainly used in the Very Important Person such as IDC data center or industrial enterprise such as telecommunications, finance, government and IT; for the visual plants such as the webserver provide distributing electric power; distribution loop protection, metering, management etc., what the network control for high reliability request of powering was monitored supplies electrical domain.Thoroughly solve the defect for distribution between traditional power distribution cabinet and modern machine room high-tech product, bring brand-new experience to the Construction and management of machine room distribution.
The utility model is not limited to above-mentioned execution mode, if do not depart from spirit and scope of the present utility model to various change of the present utility model or distortion, if these are changed and distortion belongs within claim of the present utility model and equivalent technologies scope, then the utility model is also intended to comprise these changes and distortion.
Claims (9)
1. can a network monitoring intelligence civil power input module, it is characterized in that: comprise module frames and be arranged on main road collecting unit, branch road collecting unit, instrument transformer, power transformer, lightning protection device, auxiliary relay, fuse, input main switch, communication unit, display screen and the indicator light in module frames; Described module frames comprises two side plates, be placed in the front panel of upper cover plate on side plate and detachable; Described main road collecting unit and branch road collecting unit are vertically arranged on an electric quantity acquisition plate, described instrument transformer is fixed on side plate, described power transformer is fixed on the side of module frames, described lightning protection device, auxiliary relay, fuse and communication unit are horizontally set on module frames rear portion by a sheet metal guide rail, and described input main switch, display screen and indicator light are all fixed on front panel; Described display screen and branch road collecting unit are connected and are connected on main road collecting unit, described main road collecting unit is all connected with communication unit by instrument transformer with branch road collecting unit, described lightning protection device is arranged on the input of communication unit, and described indicator light is arranged on the input of main road collecting unit.
2. according to claim 1 can network monitoring intelligence civil power input module, it is characterized in that: also comprise vertically be arranged on module frames rear left, for ground connection zero ground copper bar and be horizontally set on the main road N line copper bar of module frames rear right.
3. according to claim 1 can network monitoring intelligence civil power input module, it is characterized in that: also comprise the busbar system be arranged in the middle part of module frames.
4. according to claim 1 can network monitoring intelligence civil power input module, it is characterized in that: described display screen is touching liquid-crystal display screen.
5. according to claim 1 can network monitoring intelligence civil power input module, it is characterized in that: described input main switch is fixed breaker of plastic casing, described fixed breaker of plastic casing comprises shunt release, Alarm contactor and auxiliary contact.
6. according to claim 1 can network monitoring intelligence civil power input module, it is characterized in that: described communication unit is RS-485 interface.
7. according to claim 1 can network monitoring intelligence civil power input module, it is characterized in that: also comprise one and be fixed on transformer on side plate.
8. according to claim 1 can network monitoring intelligence civil power input module, it is characterized in that: described front panel is provided with handle, described front panel be also provided with the transparent draw-in groove placing Sign Board.
9. according to claim 1 can network monitoring intelligence civil power input module, it is characterized in that: also comprise the rear catch being arranged on for stuck-module framework and the quick guiding in module frames rear portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221292.1U CN204696455U (en) | 2015-04-13 | 2015-04-13 | One can network monitoring intelligence civil power input module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221292.1U CN204696455U (en) | 2015-04-13 | 2015-04-13 | One can network monitoring intelligence civil power input module |
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| Publication Number | Publication Date |
|---|---|
| CN204696455U true CN204696455U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520221292.1U Expired - Fee Related CN204696455U (en) | 2015-04-13 | 2015-04-13 | One can network monitoring intelligence civil power input module |
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| CN (1) | CN204696455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871416A (en) * | 2016-04-18 | 2016-08-17 | 国网山东省电力公司郓城县供电公司 | Device of using mains supply line for transmitting alarm low-frequency signals |
| CN112712976A (en) * | 2020-12-26 | 2021-04-27 | 深圳市渝华发电子科技有限公司 | Energy-saving environment-friendly electronic transformer |
-
2015
- 2015-04-13 CN CN201520221292.1U patent/CN204696455U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871416A (en) * | 2016-04-18 | 2016-08-17 | 国网山东省电力公司郓城县供电公司 | Device of using mains supply line for transmitting alarm low-frequency signals |
| CN105871416B (en) * | 2016-04-18 | 2020-03-27 | 国网山东省电力公司郓城县供电公司 | Device for transmitting alarm low-frequency signal by using mains supply line |
| CN112712976A (en) * | 2020-12-26 | 2021-04-27 | 深圳市渝华发电子科技有限公司 | Energy-saving environment-friendly electronic transformer |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 |