CN107910952A - A kind of power distribution equipment that more power supplys can be achieved and automatically switch - Google Patents
A kind of power distribution equipment that more power supplys can be achieved and automatically switch Download PDFInfo
- Publication number
- CN107910952A CN107910952A CN201711039120.2A CN201711039120A CN107910952A CN 107910952 A CN107910952 A CN 107910952A CN 201711039120 A CN201711039120 A CN 201711039120A CN 107910952 A CN107910952 A CN 107910952A
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- power supply
- power
- input terminal
- automatic switch
- output
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- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000007257 malfunction Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 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
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
-
- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
-
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of power distribution equipment that more power supplys can be achieved and automatically switch, belong to electrical power distribution technical field, including：Host computer, more power supply automatic switch unit, detection control unit and ups powers；Input terminal of the input terminal power supply respectively with more power supply automatic switch units is connected；More power supply automatic switch units make choice input terminal power supply by the program of its inner setting；Control module connection in the more power supply automatic switch units of detection control unit, for detecting the voltage and current of the input terminal power supply in use state in more power supply automatic switch units in real time；The ups power is connected with the output terminal of power supply automatic switch unit, for receiving and storing the alternating current of more power supply automatic switch unit outputs, exports direct current and alternating current；The present invention can realize that the unattended of power distribution equipment, workflow can be with intelligent functions set in advance, and in case of emergency, can carry out the detection of presence to power distribution equipment by professional's remote control.
Description
Technical field
The invention belongs to electrical power distribution technical field, and in particular to what a kind of achievable more power supplys automatically switched matches somebody with somebody Denso
Put.
Background technology
As the diversified development of power distribution equipment, the intelligentized demand of power distribution equipment are more and more extensive.But existing distribution
Device also rests on that working status is single, can not carry out the stage of intelligent control and remote control, therefore, realize power distribution equipment
It is intelligent and remote control is carried out to power distribution equipment to realize that the detection of its presence has become a kind of trend.
The content of the invention
In view of this, the object of the present invention is to provide a kind of power distribution equipment that more power supplys can be achieved and automatically switch, Neng Goushi
Existing the unattended of power distribution equipment, workflow can be with intelligent functions set in advance, and in case of emergency, can be by special
Industry personnel remote control carries out power distribution equipment the detection of presence.
The present invention is achieved through the following technical solutions：
A kind of power distribution equipment that more power supplys can be achieved and automatically switch, including：Host computer, more power supply automatic switch units, inspection
Survey control unit and ups power；
Integrated connection relation is as follows：Two or more input terminal power supply connects with the input terminal of more power supply automatic switch units respectively
Connect；More power supply automatic switch units make choice input terminal power supply by the program of its inner setting；
The detection control unit is connected by cable with the control module in more power supply automatic switch units, for real-time
The voltage and current of the input terminal power supply in use state in more power supply automatic switch units is detected, when in use state
When the voltage or current anomaly of input terminal power supply, the exception includes：Overvoltage, overload, overcurrent and under-voltage；The detection control is single
Member judges the input terminal power failure, cuts off the input terminal power supply, and automatically switches to the normal input terminal electricity of voltage and current
Source；Meanwhile detection control unit the voltage of the input terminal power supply in malfunction or current anomaly information are passed to it is upper
Machine, host computer make fault alarm；
The ups power is connected with the output terminal of power supply automatic switch unit, is cut automatically for receiving and storing more power supplys
The alternating current of unit output is changed, exports direct current and alternating current according to demand.
Further, further include dispatch from foreign news agency source inlet breaker, dispatch from foreign news agency source inlet breaker be connected to input terminal power supply with it is more
On cable between power supply automatic switch unit.
Further, line device is further included, line device is installed on the cable of ups power output alternating current, is used for
The cable of one output alternating current of ups power is divided into the output cord of more than two.
Further, two or more power supply output breaker is further included, a power supply output breaker is installed on ups power
On the cable for exporting direct current, other power supplys output breaker is installed in the output cord of more than two of line device.
Further, earthing or grounding means, the input terminal of the earthing or grounding means and the ground of two or more input terminal power supply are further included
Line and ups power connection, its output terminal are connected with ground.
Further, voltmeter and indicator light are separately installed between the firewire and zero curve of two or more input terminal power supply,
It is defeated for display three and voltmeter and indicator light are respectively positioned between dispatch from foreign news agency source inlet breaker and more power supply automatic switch units
Enter to hold electric current and the voltage of power supply whether normal.
Further, installation instruction respectively between the firewire and zero curve of the output cord of more than two of the line device
Lamp, and indicator light is respectively positioned on the output terminal of power supply output breaker, whether the electric current for display output cable is normal.
Further, more power supply automatic switch units control the power supply signal of two or more input terminal power supply by detecting
Unit is transferred to host computer, and artificial Remote Selection is carried out to input terminal power supply by host computer.
Further, detection control unit is remotely controlled more power supply automatic switch units by Remote Control Interface.
Beneficial effect：(1) present invention is realized when normality is unattended by setting more power supply automatic switch units,
It can work according to the operating process of setting, there are intelligent functions；By detection control unit realize detect it is defeated
When entering to hold power failure, tripping can be automatically controlled and power off and switch input terminal power supply, and failure alarm signal is sent by host computer；
Host computer can carry out equipment remote control by detection control unit and presence detects, convenient to access intelligent monitor system,
Control is remotely controlled to more power supply automatic switch units by Remote Control Interface by detection control unit, is realized automatic to more power supplys
" four remote control function " control of remote signalling, remote measurement, remote control and the remote regulating of switching device.
(2) present invention by setting dispatch from foreign news agency source inlet breaker and power supply to export breaker there is short-circuit protection, overload to protect
The function of shield, control and insulation blocking, realizes the protection to system overvoltage, overcurrent.
(3) present invention is all abnormal in input terminal power supply by setting ups power to realize the continuous power supply to external system
When, ensure the timely power supply of system by the electric energy of its internal savings.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
A kind of power distribution equipment that more power supplys can be achieved and automatically switch is present embodiments provided, referring to attached drawing 1, including：It is upper
Machine, dispatch from foreign news agency source inlet breaker, more power supply automatic switch units, detection control unit, ups power, line device, power supply output
Breaker and earthing or grounding means；
Three input terminal power supplys are used in the present embodiment, are respectively：Auxiliary power supply, generator and alternating current；
The dispatch from foreign news agency source inlet breaker number is identical with input terminal power supply number, is respectively：The open circuit of first over-voltage and over-current
Device K1, the second over-voltage and over-current breaker K2 and the 3rd over-voltage and over-current breaker K3；
The power supply output breaker uses 8 in the present embodiment, is respectively：Air-conditioning is disconnected for electrical circuit breakers K4, illumination
Road device K5, controlling equipment breaker K6, the first optoelectronic device breaker K7, the second optoelectronic device breaker K8, lifting device break
Road device K9, axial flow blower breaker K10 and emergency lighting breaker K11；
Dispatch from foreign news agency source inlet breaker and power supply the output breaker has short-circuit protection, overload protection, control and isolation
The function of protection；
Integrated connection relation is as follows：The firewire and zero curve of three input terminal power supplys pass through three dispatch from foreign news agency source inlets open circuits respectively
Device (K1~K3) is connected with the input terminal of more power supply automatic switch units；More power supply automatic switch units pass through its inner setting
Program makes choice input terminal power supply, or more power supply automatic switch units pass through the power supply signal of three input terminal power supplys
Detection control unit is transferred to host computer, and artificial Remote Selection is carried out to three input terminal power supplys by host computer；
The detection control unit is connected by cable with the control module in more power supply automatic switch units, or is passed through
Remote Control Interface is remotely controlled more power supply automatic switch units, for detecting in real time in more power supply automatic switch units in use
The voltage and current of the input terminal power supply of state, when the voltage or current anomaly in use state, i.e. magnitude of voltage or electric current
Value is not in setting range (setting range is national regulation), i.e., there is a situation where overvoltage, overload, overcurrent and under-voltage, the inspection
Survey control unit and judge the input terminal power failure, control more power supply switch units to cut off the input terminal power supply, and automatically switch
To the normal input terminal power supply of voltage and current, to ensure that electric power system normal table works；Meanwhile detection control unit will
The voltage or current anomaly information of input terminal power supply in malfunction pass to host computer, and host computer is out of order report
It is alert,
The ups power is connected with the output terminal of more power supply automatic switch units, automatic for receiving and storing more power supplys
The alternating current of switch unit output, exports direct current and alternating current according to demand；And set on the cable of ups power output direct current
There is a power supply output breaker (selecting emergency lighting breaker K11 in the present embodiment)；Ups power exports the line of alternating current
Cable is equipped with line device, and the cable of an output alternating current is divided into seven output cords, and this seven outputs by line device
Seven power supply output breakers (K4~K10) are respectively equipped with cable；Wherein, the line device is using double-deck high_voltage isolation
Structure, the firewire of 220V and zero curve are reliably isolated, and space layout is compact, and easy branching is reliable；
The input terminal of the earthing or grounding means is connected with the ground wire and ups power of three input terminal power supplys, its output terminal and ground
Face connects, and the ground wire and ups power for ensureing input terminal power supply reliably access the earth, ensure power supply safety；
Wherein, voltmeter and indicator light, and voltmeter are separately installed between the firewire and zero curve of three input terminal power supplys
And indicator light is respectively positioned between dispatch from foreign news agency source inlet breaker and more power supply automatic switch units, for showing three input terminal power supplys
Electric current and voltage it is whether normal；
Line device separates and installs indicator light respectively between the firewire and zero curve of seven output cords, and indicator light is respectively positioned on
Power supply exports the output terminal of breaker, and whether the electric current for showing seven output cords is normal.
In conclusion the foregoing is merely a prefered embodiment of the invention, it is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent replacement, improvement and so on, should be included in the present invention's
Within protection domain.
Claims (9)
- A kind of 1. power distribution equipment that more power supplys can be achieved and automatically switch, it is characterised in that including：Host computer, more power supplys are cut automatically Change unit, detection control unit and ups power；Integrated connection relation is as follows：Input terminal of the two or more input terminal power supply respectively with more power supply automatic switch units is connected； More power supply automatic switch units make choice input terminal power supply by the program of its inner setting；The detection control unit is connected by cable with the control module in more power supply automatic switch units, for detecting in real time The voltage and current of input terminal power supply in use state in more power supply automatic switch units, when the input in use state When holding the voltage or current anomaly of power supply, the exception includes：Overvoltage, overload, overcurrent and under-voltage；The detection control unit is sentenced The fixed input terminal power failure, cuts off the input terminal power supply, and automatically switch to the normal input terminal power supply of voltage and current；Together When, the voltage of the input terminal power supply in malfunction or current anomaly information are passed to host computer by detection control unit, on Position machine makes fault alarm；The ups power is connected with the output terminal of power supply automatic switch unit, single for receiving and storing more power supplys automatic switchovers The alternating current of member output, exports direct current and alternating current according to demand.
- 2. a kind of power distribution equipment that more power supplys can be achieved and automatically switch as claimed in claim 1, it is characterised in that further include outer Power import breaker, dispatch from foreign news agency source inlet breaker are connected to the cable between input terminal power supply and more power supply automatic switch units On.
- 3. a kind of power distribution equipment that more power supplys can be achieved and automatically switch as claimed in claim 1, it is characterised in that further include point Line apparatus, line device are installed on the cable of ups power output alternating current, for exporting alternating current by one of ups power Cable be divided into the output cord of more than two.
- 4. a kind of power distribution equipment that more power supplys can be achieved and automatically switch as claimed in claim 3, it is characterised in that further include two A above power supply exports breaker, and a power supply output breaker is installed on the cable of ups power output direct current, other electricity Source output breaker is installed in the output cord of more than two of line device.
- 5. a kind of power distribution equipment that more power supplys can be achieved and automatically switch as claimed in claim 1, it is characterised in that further include and connect Ground device, the input terminal of the earthing or grounding means are connected with the ground wire and ups power of two or more input terminal power supply, its output terminal with Ground connects.
- A kind of 6. power distribution equipment that more power supplys can be achieved and automatically switch as claimed in claim 2, it is characterised in that two or more Voltmeter and indicator light are separately installed between the firewire and zero curve of input terminal power supply, and voltmeter and indicator light are respectively positioned on dispatch from foreign news agency Between source inlet breaker and more power supply automatic switch units, just whether electric current and voltage for three input terminal power supplys of display Often.
- A kind of 7. power distribution equipment that more power supplys can be achieved and automatically switch as claimed in claim 4, it is characterised in that the separated time Indicator light is installed respectively, and indicator light is respectively positioned on power supply output between the firewire and zero curve of the output cord of more than two of device Whether the output terminal of breaker, the electric current for display output cable are normal.
- 8. a kind of power distribution equipment that more power supplys can be achieved and automatically switch as claimed in claim 1, it is characterised in that more power supplys are certainly The power supply signal of two or more input terminal power supply is transferred to host computer by dynamic switch unit by detection control unit, by upper Machine carries out artificial Remote Selection to input terminal power supply.
- A kind of 9. power distribution equipment that more power supplys can be achieved and automatically switch as claimed in claim 1, it is characterised in that detection control Unit is remotely controlled more power supply automatic switch units by Remote Control Interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039120.2A CN107910952A (en) | 2017-10-31 | 2017-10-31 | A kind of power distribution equipment that more power supplys can be achieved and automatically switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039120.2A CN107910952A (en) | 2017-10-31 | 2017-10-31 | A kind of power distribution equipment that more power supplys can be achieved and automatically switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107910952A true CN107910952A (en) | 2018-04-13 |
Family
ID=61843043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711039120.2A Pending CN107910952A (en) | 2017-10-31 | 2017-10-31 | A kind of power distribution equipment that more power supplys can be achieved and automatically switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN107910952A (en) |
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|---|---|---|---|---|
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| CN202995418U (en) * | 2012-12-05 | 2013-06-12 | 施耐德万高（天津）电气设备有限公司 | Multiple-power-supply ATS signal processing system based on multiprocessor |
| CN203416038U (en) * | 2013-06-28 | 2014-01-29 | 比亚迪股份有限公司 | Dual power supply device |
| US8890374B2 (en) * | 2010-03-29 | 2014-11-18 | Delta Electronics, Inc. | Uninterruptible power supply system for avoiding arcing generation and cabinet thereof |
| CN105406580A (en) * | 2014-09-01 | 2016-03-16 | 艾默生网络能源有限公司 | Power supply system and method |
| CN205123404U (en) * | 2015-10-30 | 2016-03-30 | 郑州众智科技股份有限公司 | Three routes switching of power control system |
| CN205791763U (en) * | 2016-06-12 | 2016-12-07 | 深圳市禾望电气股份有限公司 | Electric power system and wind power generating set |
| CN205864051U (en) * | 2016-05-18 | 2017-01-04 | 王公诚 | Many power supplys change controller switching equipment automatically |
| CN106469972A (en) * | 2015-08-07 | 2017-03-01 | 宝创企业股份有限公司 | Power supply management device with remote monitoring and electric power backup mechanism |
-
2017
- 2017-10-31 CN CN201711039120.2A patent/CN107910952A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2472376Y (en) * | 2000-02-01 | 2002-01-16 | 中国人民解放军37331部队 | Multifunctional distribution cabinet for multiple A.C. supply |
| US7259481B2 (en) * | 2003-02-28 | 2007-08-21 | Kohler Co. | Automatic transfer switch capable of receiving input power having voltage within a wide range |
| US8890374B2 (en) * | 2010-03-29 | 2014-11-18 | Delta Electronics, Inc. | Uninterruptible power supply system for avoiding arcing generation and cabinet thereof |
| CN202353309U (en) * | 2011-07-26 | 2012-07-25 | 苏州市龙源电力工程有限公司 | AC-DC (alternating current-direct current) integrated power supply system and DC power cabinet |
| CN202995418U (en) * | 2012-12-05 | 2013-06-12 | 施耐德万高（天津）电气设备有限公司 | Multiple-power-supply ATS signal processing system based on multiprocessor |
| CN203416038U (en) * | 2013-06-28 | 2014-01-29 | 比亚迪股份有限公司 | Dual power supply device |
| CN105406580A (en) * | 2014-09-01 | 2016-03-16 | 艾默生网络能源有限公司 | Power supply system and method |
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| CN205123404U (en) * | 2015-10-30 | 2016-03-30 | 郑州众智科技股份有限公司 | Three routes switching of power control system |
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Application publication date: 20180413 |