CN101710728A - Method and device for supplying power to chassis equipment of communication machine room - Google Patents
Method and device for supplying power to chassis equipment of communication machine room Download PDFInfo
- Publication number
- CN101710728A CN101710728A CN200910110050A CN200910110050A CN101710728A CN 101710728 A CN101710728 A CN 101710728A CN 200910110050 A CN200910110050 A CN 200910110050A CN 200910110050 A CN200910110050 A CN 200910110050A CN 101710728 A CN101710728 A CN 101710728A
- Authority
- CN
- China
- Prior art keywords
- ups
- power supply
- supply
- power
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a method and a device for supplying power to chassis equipment of a communication machine room. In the method for supplying power, an output end of a standby UPS is connected in series with an input end of a primary UPS bypass; a primary UPS is used as a power supply of single power supply equipment in a chassis and used as one path of power supply of dual power supply equipment in the chassis at the same time; and the standby UPS is used as the other path of power supply of the dual power supply equipment in the chassis. The invention also provides the corresponding device for supplying power. The method and the device are suitable for service power distribution of the chassis with the single power supply equipment and the dual power supply equipment, the primary UPS and the standby UPS are adopted to share load, the reliability of power supply is improved and the load power supply is not required to be switched regularly.
Description
Technical field
The energy device UPS product scope that the present invention relates to communicate by letter is specifically related to a kind of interchange uninterrupted power supply method and corresponding electric supply installation of chassis equipment of communication machine room.
Background technology
Along with the develop rapidly of the communication technology, the UPS electric power system has become the indispensable power supply of the communications industry.The reliability of UPS electric power system is the basic premise of communication equipment availability.Generally, the user thinks that the employing redundant parallel operation of UPS system can guarantee power supply safety, yet among the UPS, small-power type majority do not support the parallel operation redundancy feature, loads in mixture at the single, double power-supply device of communication equipment in the application scenarioss such as frame, how improving the UPS power supply reliability is a big emphasis.Prior art extensively adopts following two kinds of UPS power supply plans.
First kind of power supply plan is UPS series connection Hot Spare electric power system method, consult shown in Figure 1A, two cover ups system unit tandem workings, standby UPS output inserts the main UPS of using bypass input as Hot Spare, main independently be output as load (that is, interior single supply equipment of frame and duplicate supply equipment) with UPS and provide and exchange uninterrupted power supply.This scheme is under normal circumstances main bears the whole loads of system with UPS, the unloaded Hot Spare of standby UPS.If the master is broken down with UPS, standby UPS takes over the master and provides the interchange uninterrupted power supply with UPS for load.At the big situation of system load configuration, because the master bears the whole loads of system with UPS, for leading for UPS, when its fault is changeed bypass power supply, may cause the bypass of standby UPS civil power, and long-time running may cause the master obviously to raise (the most common failure point comprises inverter unit, Bypass Control unit and input and output contactor constant power parts) with the UPS failure rate; For standby UPS, long-term zero load will cause the standby UPS life of storage battery to shorten, and can not understand its each several part in real time fault-free or hidden danger are arranged.Need regularly to switch primary, spare UPS electric in theory.In addition, in fact the two-way power supply of duplicate supply equipment is powered by same power supply (the promptly main UPS that uses) in the frame, and power supply reliability is not high relatively.
And another kind of scheme UPS unit double-bus electric power system method is consulted shown in Figure 1B, and two cover ups system units work alone, and double-bus two-way power supply is formed in its two-way output, is respectively the two-way power supply power supply of duplicate supply equipment in the frame.Under the normal condition, two UPS are simultaneously for duplicate supply equipment provides the interchange uninterrupted power supply, average load sharing.If wherein a UPS breaks down, then this UPS changes bypass mode, provides the interchange uninterrupted power supply by another UPS.But this scheme only is applicable to pure duplicate supply equipment rack (that is, all devices is duplicate supply in the frame), is not suitable for single, double power-supply device and loads in mixture frame, and range of application is limited to very much.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of and be applicable to that the single, double power-supply device of communications equipment room loads in mixture frame and exchanges uninterrupted power supply method and device, can effectively improve power supply reliability, avoid standby UPS to be in zero load for a long time simultaneously and cause as life of storage battery problem.
The present invention has adopted following technical scheme:
A kind of method of supplying power to of chassis equipment of communication machine room, it is characterized in that: use main with UPS and standby UPS two cover ups systems, the master is respectively arranged with the Bypass Control unit with UPS and standby UPS, is its power supply with standby UPS as one road power supply of two-supply circuit equipment in the frame, output with standby UPS is in series with main Bypass Control unit input with UPS simultaneously, the main UPS of using is its power supply as the power supply of single supply equipment in the frame, and another road power supply as duplicate supply equipment in the frame is its power supply simultaneously.
Main with UPS and standby UPS by same road mains-supplied and keep phase sequence consistent.
The master also is respectively arranged with batteries with UPS and standby UPS.
When civil power is normal, the equipment fault-free, standby UPS inserts civil power, and be its power supply as one road power supply of duplicate supply equipment in the frame, it is main that to insert civil power with UPS is single supply power devices in the frame, another road power supply as duplicate supply equipment in the frame is its power supply simultaneously;
When city's electrical anomaly, equipment fault-free, standby UPS is as one road power supply of duplicate supply equipment in the frame, utilize its batteries to be the duplicate supply power devices, it is single supply power devices in the frame that the master utilizes its batteries with UPS, and another road power supply as duplicate supply equipment in the frame is its power supply simultaneously;
Use the UPS no-output when civil power is normal, main, standby UPS inserts civil power, and be its power supply as one road power supply of duplicate supply equipment in the frame, the output of standby UPS simultaneously is single supply power devices in the frame by main Bypass Control unit with UPS, and is its power supply as another road power supply of duplicate supply equipment in the frame;
When city's electrical anomaly, the main UPS no-output of using, standby UPS is as one road power supply of duplicate supply equipment in the frame, utilize its batteries to be the duplicate supply power devices, the output of standby UPS simultaneously is single supply power devices in the frame by main Bypass Control unit with UPS, and is its power supply as another road power supply of duplicate supply equipment in the frame;
When normal, the standby UPS no-output of civil power, standby UPS inserts civil power from its Bypass Control unit, road power supply as duplicate supply equipment in the frame is its power supply, main is single supply power devices in the frame with UPS access civil power, and another road power supply as duplicate supply equipment is its power supply simultaneously;
When city's electrical anomaly, standby UPS no-output, it is single supply power devices in the frame that the master utilizes its batteries with UPS, road power supply as duplicate supply equipment in the frame is its power supply simultaneously;
Work as system overload, standby UPS inserts civil power from its Bypass Control unit, road power supply as duplicate supply equipment in the frame is its power supply, the output of standby UPS simultaneously is single supply power devices in the frame by main Bypass Control unit with UPS, and is its power supply as another road power supply of duplicate supply equipment in the frame.
The present invention also provides a kind of electric supply installation of communications equipment room frame, it is characterized in that: this device comprises main with UPS and standby UPS two cover ups systems, the master includes the Bypass Control unit respectively with UPS and standby UPS, the output of standby UPS is connected with a power input of duplicate supply equipment in the frame, the output of standby UPS also is connected with main Bypass Control unit input with UPS, main output with UPS is connected with single supply equipment in the frame, also is connected with another power input of duplicate supply equipment in the frame simultaneously.
In the aforesaid electric supply installation, the master also comprises rectifier, inverter, batteries respectively with UPS and standby UPS; Wherein, rectifier and inverter are in series, and batteries is other to be received between rectifier and the inverter, and the output of inverter is connected with chassis equipment.
In the aforesaid electric supply installation, the input of the rectifier of main UPS of using and standby UPS is electrically connected with same road city and keeps phase sequence consistent.
The invention has the beneficial effects as follows: (1) is because the master is a single supply power devices in the frame with UPS, simultaneously from one road power supply supplying power for input end of duplicate supply equipment, standby UPS is from another road power supply supplying power for input end of duplicate supply equipment, promptly, duplicate supply equipment is powered by double-bus in the frame, the master and slave backup power supply of single supply equipment has greatly improved the reliability of UPS power supply in the frame; (2) because main UPS and the standby UPS load sharing used effectively reduces UPS unit load factor, can also understand the operation conditions of standby UPS in real time, avoid standby UPS, not need regular switch load power supply owing to long-term unloaded its life of storage battery that causes shortens.
Description of drawings
Figure 1A is the theory diagram of prior art UPS series connection Hot Spare electric power system method;
Figure 1B is the theory diagram of prior art UPS unit double-bus electric power system method;
Fig. 2 is the theory diagram of the inventive method;
Fig. 3 is the schematic diagram of situation one among apparatus of the present invention embodiment (civil power normal, equipment fault-free);
Fig. 4 is the schematic diagram of situation two among apparatus of the present invention embodiment (city's electrical anomaly, equipment fault-free);
Fig. 5 is the schematic diagram of situation three (system overload) among apparatus of the present invention embodiment;
Fig. 6 is the schematic diagram of situation four among apparatus of the present invention embodiment (normal, the main UPS no-output of using of civil power);
Fig. 7 is the schematic diagram of situation five among apparatus of the present invention embodiment (city's electrical anomaly, the main UPS no-output of using);
Fig. 8 is the schematic diagram of situation six among apparatus of the present invention embodiment (normal, the standby UPS no-output of civil power);
Fig. 9 is the schematic diagram of situation seven among apparatus of the present invention embodiment (city's electrical anomaly, standby UPS no-output).
Among the figure, ACin is a civil power, and AC/DC is a rectifier, and DC/AC is an inverter, and BYPASS is the Bypass Control unit, and BATTERY is a batteries, and SLAVER is standby UPS, and MASTER is that main to use UPS, POWER-A be rack power supplies A road, and POWER-B is rack power supplies B road.
Embodiment
In conjunction with the accompanying drawings the present invention is described in further detail below by embodiment.
Figure 2 shows that the theory diagram of the inventive method, may further comprise the steps:
S10: active and standby series connection is in series the output of standby UPS and the Bypass Control unit input of leading with UPS;
S20: stand-by power supply, standby UPS as one road power supply of duplicate supply equipment in the frame to the duplicate supply power devices;
S30: main with power supply, main with UPS as another road power supply of duplicate supply equipment in the frame to the duplicate supply power devices, also be simultaneously the interior single supply power devices of frame.
Fig. 3 to Fig. 9 is the schematic diagram under the various situations among apparatus of the present invention embodiment.Apparatus of the present invention comprise main with UPS and standby UPS two cover ups systems.The master includes rectifier, inverter, batteries and Bypass Control unit respectively with UPS and standby UPS.Wherein, rectifier and inverter are in series, and batteries is other to be connected between rectifier and the inverter.The master is connected with civil power with the input of the rectifier of UPS, and the input of Bypass Control unit is connected with the output of the inverter of standby UPS; The main output of the inverter of UPS of using is connected with an end of duplicate supply equipment in the frame, is connected with single supply equipment in the frame simultaneously.The input of the rectifier of standby UPS is connected with civil power, and the output of inverter is connected with the other end of duplicate supply equipment in the frame.
Schematic diagram when Figure 3 shows that apparatus of the present invention embodiment situation one (civil power normal, equipment fault-free).Shown in the solid line among the figure and the arrow flow direction thereof, main with behind the UPS access civil power, current path is: electric current from rack power supplies A road direction duplicate supply equipment and single supply power devices, is main battery charging with UPS by main rectifier with UPS by main rectifier with UPS, inverter simultaneously; After standby UPS inserted civil power, current path was: the rectifier of electric current by standby UPS, inverter duplicate supply power devices in the rack power supplies B road direction frame, the rectifier by standby UPS is the battery charging of standby UPS simultaneously.Main Bypass Control unit input with UPS is directly received in the inverter output of standby UPS, provides backup for main with UPS.
Figure 4 shows that the schematic diagram of situation two among apparatus of the present invention embodiment (city's electrical anomaly, equipment fault-free).Shown in solid line among the figure and arrow thereof flow to, mainly use its batteries power supply with UPS, current path is: through main inverter with UPS duplicate supply equipment and single supply power devices in the rack power supplies A road direction frame; Standby UPS uses its batteries power supply, current path is: through the inverter of standby UPS duplicate supply power devices in the rack power supplies B road direction frame, the output of the inverter of standby UPS is directly received the input of the Bypass Control unit of the main UPS of using simultaneously, provides backup for main with UPS.
Figure 5 shows that the schematic diagram of situation three (system overload) among apparatus of the present invention embodiment.Shown in the solid line among the figure and the arrow flow direction thereof, it is duplicate supply power devices in the frame from rack power supplies B road that the Bypass Control unit of standby UPS inserts civil power, the output of the Bypass Control unit of standby UPS is directly connected to the input of the Bypass Control unit of the main UPS of using simultaneously, is duplicate supply equipment and single supply power devices in the frame from rack power supplies A road.
Figure 6 shows that the schematic diagram of situation four among apparatus of the present invention embodiment (normal, the main UPS no-output of using of civil power).Shown in the solid line among the figure and the arrow flow direction thereof, after standby UPS inserts civil power, current path is: the rectifier by standby UPS, inverter duplicate supply power devices in the rack power supplies B road direction frame, the rectifier by standby UPS is the battery charging of standby UPS simultaneously.The inverter output of standby UPS is directly connected to the input of the Bypass Control unit of the main UPS of using, is duplicate supply equipment and single supply power devices in the frame from rack power supplies A road.
Figure 7 shows that the schematic diagram of situation five among apparatus of the present invention embodiment (city's electrical anomaly, the main UPS no-output of using).Shown in the solid line among the figure and the arrow flow direction thereof, standby UPS uses its batteries power supply, current path is: through the inverter of standby UPS duplicate supply power devices in the rack power supplies B road direction frame, the output of the inverter of standby UPS simultaneously is directly connected to the input of the Bypass Control unit of the main UPS of using, is duplicate supply equipment and single supply power devices in the frame from rack power supplies A road.
Figure 8 shows that the schematic diagram of situation six among apparatus of the present invention embodiment (normal, the standby UPS no-output of civil power).Shown in the solid line among the figure and the arrow flow direction thereof, main with behind the UPS access civil power, current path is: from rack power supplies A road direction duplicate supply equipment and single supply power devices, is main battery charging with UPS by main rectifier with UPS simultaneously by main rectifier with UPS, inverter; It is duplicate supply power devices in the frame from rack power supplies B road that the Bypass Control unit of standby UPS inserts civil power, and the output of the Bypass Control unit of standby UPS is directly connected to the input of the Bypass Control unit of the main UPS of using simultaneously, provides backup for main with UPS.
Figure 9 shows that the schematic diagram of situation seven among apparatus of the present invention embodiment (city's electrical anomaly, standby UPS no-output).Shown in solid line among the figure and arrow thereof flow to, mainly use its batteries power supply with UPS, current path is: through main inverter with UPS duplicate supply equipment and single supply power devices in the rack power supplies A road direction frame; Standby UPS stops power supply.
City's electrical anomaly described in the various embodiments described above is meant that the voltage of civil power or frequency be not in the scope that UPS allows or have a power failure.And the reason of leading with the UPS no-output may be a fault of converter, and perhaps the panel-switch of inverter is closed and causes.Wherein, the panel-switch of inverter is that all UPS or inverter must orchestration spares.In addition, described rack power supplies A road and rack power supplies B road refer to the two-way input of duplicate supply device power supply (DPS) respectively, and its alphabetical A and B only are a kind of signs.
Above content be in conjunction with concrete execution mode to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the those of ordinary skill of technical field of the present invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. the method for supplying power to of a chassis equipment of communication machine room, it is characterized in that: use main with UPS and standby UPS two cover ups systems, described master is respectively arranged with the Bypass Control unit with UPS and described standby UPS, is its power supply with described standby UPS as one road power supply of duplicate supply equipment in the frame, output and described main Bypass Control unit input with UPS with described standby UPS is in series simultaneously, the described main UPS of using is its power supply as the power supply of single supply equipment in the frame, and another road power supply as duplicate supply equipment in the frame is its power supply simultaneously.
2. method of supplying power to as claimed in claim 1 is characterized in that: described master with UPS with described standby UPS is: by same road mains-supplied and keep phase sequence consistent.
3. method of supplying power to as claimed in claim 1 or 2, it is characterized in that: when civil power just often, if equipment fault-free, described standby UPS inserts civil power, and be its power supply as one road power supply of duplicate supply equipment in the frame, it is single supply power devices in the frame that described master inserts civil power with UPS, and another road power supply as duplicate supply equipment in the frame is its power supply simultaneously; If the described main UPS no-output of using, described standby UPS inserts civil power, and be its power supply as one road power supply of duplicate supply equipment in the frame, the output of described standby UPS simultaneously is single supply power devices in the frame by described main Bypass Control unit with UPS, and is its power supply as another road power supply of duplicate supply equipment in the frame;
If described standby UPS no-output, described standby UPS inserts civil power from its Bypass Control unit, road power supply as duplicate supply equipment in the frame is its power supply, it is single supply power devices in the frame that described master inserts civil power with UPS, and another road power supply as duplicate supply equipment is its power supply simultaneously.
4. method of supplying power to as claimed in claim 1 or 2, it is characterized in that: when city's electrical anomaly, if equipment fault-free, described standby UPS is as one road power supply of duplicate supply equipment in the frame, utilize its batteries to be the duplicate supply power devices, it is single supply power devices in the frame that described master utilizes its batteries with UPS, and another road power supply as duplicate supply equipment in the frame is its power supply simultaneously;
If the described main UPS no-output of using, described standby UPS is as one road power supply of duplicate supply equipment in the frame, utilize its batteries to be the duplicate supply power devices, the output of described standby UPS simultaneously is single supply power devices in the frame by described main Bypass Control unit with UPS, and is its power supply as another road power supply of duplicate supply equipment in the frame;
If described standby UPS no-output, it is single supply power devices in the frame that described master utilizes its batteries with UPS, and road power supply as duplicate supply equipment in the frame is its power supply simultaneously.
5. method of supplying power to as claimed in claim 1 or 2, it is characterized in that: work as system overload, described standby UPS inserts civil power from its Bypass Control unit, road power supply as duplicate supply equipment in the frame is its power supply, the output of described standby UPS simultaneously is single supply power devices in the frame by described main Bypass Control unit with UPS, and is its power supply as another road power supply of duplicate supply equipment in the frame.
6. the electric supply installation of a chassis equipment of communication machine room, it is characterized in that: this device comprises main with UPS and standby UPS two cover ups systems, described master includes the Bypass Control unit respectively with UPS and described standby UPS, the output of described standby UPS is connected with a power input of duplicate supply equipment in the frame, the output of described standby UPS also is connected with described main Bypass Control unit input with UPS, described main output with UPS is connected with single supply equipment in the frame, also is connected with another power input of duplicate supply equipment in the frame simultaneously.
7. electric supply installation as claimed in claim 6 is characterized in that: described master also comprises rectifier, inverter, batteries respectively with UPS and described standby UPS; Wherein, rectifier and inverter are in series, and batteries is other to be received between rectifier and the inverter, and the output of inverter is connected with chassis equipment.
8. electric supply installation as claimed in claim 6 is characterized in that: the input of the rectifier of described main UPS of using and described standby UPS is electrically connected with same road city and keeps phase sequence consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910110050A CN101710728A (en) | 2009-11-06 | 2009-11-06 | Method and device for supplying power to chassis equipment of communication machine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910110050A CN101710728A (en) | 2009-11-06 | 2009-11-06 | Method and device for supplying power to chassis equipment of communication machine room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101710728A true CN101710728A (en) | 2010-05-19 |
Family
ID=42403494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910110050A Pending CN101710728A (en) | 2009-11-06 | 2009-11-06 | Method and device for supplying power to chassis equipment of communication machine room |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101710728A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035247A (en) * | 2010-10-19 | 2011-04-27 | 浪潮电子信息产业股份有限公司 | Method for designing power supply of centralized RACK system |
| CN103312024A (en) * | 2012-03-06 | 2013-09-18 | 北京联动天翼科技有限公司 | Machine room distributed back-up DC power supply system |
| CN104393664A (en) * | 2014-10-31 | 2015-03-04 | 国家电网公司 | Electric power communication machine room uninterrupted AC power supply system |
| CN105955340A (en) * | 2016-05-20 | 2016-09-21 | 湖南奥科网络技术股份有限公司 | Internet based remote temperature control processor |
| CN113541299A (en) * | 2021-06-30 | 2021-10-22 | 深圳市英威腾电源有限公司 | Load power distribution method and device and uninterruptible power supply parallel redundancy system |
| CN114190052A (en) * | 2021-11-12 | 2022-03-15 | 中节能工业节能有限公司 | Distributed comprehensive energy system for data center |
| CN115843410A (en) * | 2022-09-09 | 2023-03-24 | 航霈科技(深圳)有限公司 | Redundant power supply device, system, uninterruptible power supply equipment, switch and control method |
-
2009
- 2009-11-06 CN CN200910110050A patent/CN101710728A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035247A (en) * | 2010-10-19 | 2011-04-27 | 浪潮电子信息产业股份有限公司 | Method for designing power supply of centralized RACK system |
| CN102035247B (en) * | 2010-10-19 | 2013-05-22 | 浪潮电子信息产业股份有限公司 | Method for designing power supply of centralized RACK system |
| CN103312024A (en) * | 2012-03-06 | 2013-09-18 | 北京联动天翼科技有限公司 | Machine room distributed back-up DC power supply system |
| CN104393664A (en) * | 2014-10-31 | 2015-03-04 | 国家电网公司 | Electric power communication machine room uninterrupted AC power supply system |
| CN105955340A (en) * | 2016-05-20 | 2016-09-21 | 湖南奥科网络技术股份有限公司 | Internet based remote temperature control processor |
| CN113541299A (en) * | 2021-06-30 | 2021-10-22 | 深圳市英威腾电源有限公司 | Load power distribution method and device and uninterruptible power supply parallel redundancy system |
| CN114190052A (en) * | 2021-11-12 | 2022-03-15 | 中节能工业节能有限公司 | Distributed comprehensive energy system for data center |
| CN115843410A (en) * | 2022-09-09 | 2023-03-24 | 航霈科技(深圳)有限公司 | Redundant power supply device, system, uninterruptible power supply equipment, switch and control method |
| CN115843410B (en) * | 2022-09-09 | 2023-10-13 | 航霈科技(深圳)有限公司 | Redundant power supply device, system, uninterruptible power supply equipment, switch and control method |
| WO2024050812A1 (en) * | 2022-09-09 | 2024-03-14 | 航霈科技(深圳)有限公司 | Redundant power supply device and system, uninterruptible power supply equipment, switch, and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102368631B (en) | Efficient and reliable power supply architecture of data center electronic equipment | |
| CN106208350B (en) | Power supply method and device | |
| CN201789329U (en) | Uninterruptable AC and DC power supply system | |
| CN103023131B (en) | A kind of data center DC power-supply system | |
| CN101710728A (en) | Method and device for supplying power to chassis equipment of communication machine room | |
| CN102545355B (en) | Cabinet power supply system | |
| CN102025187A (en) | Integrated UPS (Uninterrupted Power Supply) parallel system of underground weak current | |
| CN106532919A (en) | System architecture for mutual hot backup of two segments of DC power buses | |
| CN104917286A (en) | High-reliability complete machine cabinet continuous power supply device and method | |
| CN103490492B (en) | High voltage direct current electric power system | |
| CN103296738A (en) | Dual standby saving type direct current power supply system | |
| CN202424295U (en) | Inverter power supply and power supply system applying same | |
| CN103715757A (en) | Back-up type redundant low-voltage power distribution system used for nuclear power station | |
| CN101888112B (en) | Power system provided with stand-by power | |
| KR101444266B1 (en) | Energy management system using usual uninterruptible power supply | |
| CN205070433U (en) | Exchange direct current device | |
| CN202455149U (en) | Power supply system for supplying electronic equipment and frame power supply | |
| CN103730948A (en) | Server cabinet continuous power supply method | |
| CN103972978A (en) | Uninterruptible power supply and battery sharing system and control method thereof | |
| CN201918789U (en) | Subway weak-current comprehensive UPS (uninterrupted power supply) parallel connection system | |
| CN102214918A (en) | High-reliability power supply system, method and frequency converter system | |
| CN201887534U (en) | Uninterruptible multichannel AC-input power supply | |
| CN208046235U (en) | A kind of computer room high voltage supply system | |
| CN110867946A (en) | Alternating current-direct current hybrid power supply integrated power supply | |
| CN203301212U (en) | Dual standby saving type DC power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100519 |