CN101917053A - Method for carrying out centralized power supply on RACK system - Google Patents

Method for carrying out centralized power supply on RACK system Download PDF

Info

Publication number
CN101917053A
CN101917053A CN 201010243387 CN201010243387A CN101917053A CN 101917053 A CN101917053 A CN 101917053A CN 201010243387 CN201010243387 CN 201010243387 CN 201010243387 A CN201010243387 A CN 201010243387A CN 101917053 A CN101917053 A CN 101917053A
Authority
CN
China
Prior art keywords
power
power supply
supply
rack system
module
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.)
Granted
Application number
CN 201010243387
Other languages
Chinese (zh)
Other versions
CN101917053B (en
Inventor
滕学军
罗嗣恒
吴明生
姚萃南
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inspur Electronic Information Industry Co Ltd
Original Assignee
Langchao Electronic Information Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Langchao Electronic Information Industry Co Ltd filed Critical Langchao Electronic Information Industry Co Ltd
Priority to CN201010243387A priority Critical patent/CN101917053B/en
Publication of CN101917053A publication Critical patent/CN101917053A/en
Application granted granted Critical
Publication of CN101917053B publication Critical patent/CN101917053B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Power Sources (AREA)

Abstract

The invention discloses a method for carrying out centralized power supply on a RACK system and belongs to the technology in the field of power supply of server cabinet systems. Two stages of power supply are adopted to supply power. A primary power supply adopts a mode that a plurality of power supply modules are connected in parallel to supply power, namely a mode that N+1 power supply modules are connected in parallel to carry out redundant power supply. The method realizes conversion from a 220V AC power supply to a 12V DC power supply. The 12V DC power supply is output to each server node in the RACK system; an onboard DC-DC secondary power supply on each server node converts the 12V power supply and provides 12V, 5V, 3.5V, 5VSB and -12V required by various server nodes and sequence signals of the on-off of PS-ON and PowerGood. Compared with the prior art, the method for carrying out centralized power supply on the RACK system greatly improves the reliability of a power supply system, realizes connection without cables and is convenient to maintain.

Description

A kind of method to RACK system concentration supply power
Technical field
The present invention relates to a kind of server cabinet system power supply art, specifically a kind of method to RACK system concentration supply power.
Background technology
The fast development of the Internet makes information resources present explosive growth, and people are medium with the network, and the demand of information is also constantly being increased.Various large-scale data machine rooms also arise at the historic moment.The quantity of the individuality of composition data machine room---server, storage rack is also in continuous increase.Along with the increase of amount of information, the former machine room that has built up can not be disposed more rack.Therefore, movably the container data machine room arises at the historic moment.And form moving machine room the unit---the power supply of RACK (rack rack) system becomes a difficult point.
Summary of the invention
A kind of method that technical assignment of the present invention provides a kind of reliability that greatly improves electric power system, realizes no cable connection, maintains easily to RACK system concentration supply power.
Technical assignment of the present invention realizes in the following manner, adopts N+1 power module parallel redundancy supply power mode to produce+the 12V bus of power by the intermediate power supplies backboard, comes to power to server node in the RACK system; Adopt the power supply of two level power supplies, one level power supply adopts multi-power module parallel operation mode, be N+1 power module parallel redundancy supply power mode, realize of the conversion of 220V AC power, output in the RACK system on each server node by the 12V DC power supply to the 12V DC power supply; The DC-DC secondary power supply that each server node plate carries is changed the 12V power supply, provide the required 12V of each server node, 5V, 3.3V, 5VSB ,-clock signal of 12V voltage and PS-ON and PowerGood switching on and shutting down; Power supply module and server node all adopt the connected mode of golden finger to be connected one by power supply backplane.
The N+1 power module parallel redundancy supply power mode of one level power supply is by the power module of in-parallel operation, and distributed power source is provided; All power module parallel runnings, the load that equalization of incidence is current, the power module array is put a power power-supply module than rated capacity polygamy, when a power module breaks down, the trouble power module is disconnected from load, other power module will be supported all loads immediately, make it be the power supply of RACK system uninterruptedly; One level power supply power module is powered to each server node of RACK system by power supply backplane; The design of one level power supply power module has the functional circuit of fault detect, location, isolation, warning, hot swap, supports hot plug, and also designing in the level power supply power module has overvoltage, overcurrent, the too high safety protective circuit of temperature.
One level power supply adopts multi-power module parallel operation mode, optimizes the output coupled modes on the power distribution plate, guarantees the current-sharing output between power module.N+1 power module parallel redundancy supply power mode has not only effectively reduced the power supply cost, but also guarantees that fully RACK system power supply do not interrupt.The design of one level power supply has the functional circuit of fault detect, location, isolation, warning, hot swap, when breaking down in the power module subsystem, sends information by the administrative unit in the power module, realizes can monitoring efficiently and the on-line maintenance function; Design has overvoltage, overcurrent, the too high safety protective circuit of temperature in the one-level power subsystem; Monitor And Control Subsystem can be made preventive measures according to the abnormal conditions of power supply itself and system, avoids mortality infringement and other security incident that the RACK system is brought
One level power supply adopts 1 group of 3+1 power module parallel redundancy supply power mode, the rated output power of each power module configuration 5000W, total maximum rated power 15000W.
Secondary power supply is provided with and prevents the node power-off protecting circuit to what each server node in the RACK system provided short-circuit protection function; The fault in case certain server node is short-circuited, secondary power supply can disconnect immediately and stop to this server node power supply; Secondary power supply adopts the hot plug design.
Secondary power supply improves the versatility of each server node motherboard in the RACK system and provides short-circuit protection function (this function mainly is to prevent in the RACK system that certain server node is short-circuited fault and causes) to each server node in the RACK system.The fault in case certain server node is short-circuited, secondary power supply can disconnect immediately and stop to this server node power supply.Thereby avoid the whole RACK system generation loss of power accident.The beneficial effect of this function is: when placing multiple servers in the RACK system, can not influence the reliable and stable operation of other server in the same rack because of the damage of certain server secondary power supply wherein.
Before entering the RACK system, three-phase 380V power supply adopts rack supply socket (Power Distribution Unit is called for short PDU) to convert single-phase 220V power supply to, and single-phase 220V power supply is the intrasystem power module power supply of RACK.The three-phase 380V electricity that enters rack converts N to by two PDU and organizes single-phase 220V electricity, is respectively the intrasystem power module power supply of RACK.Why adopt PDU and do not adopt the power supply plan of common power insert row, mainly be for avoiding occurring RACK system safety hidden danger, this is because PDU compares with the common power socket, its circuit design arrangement is more reasonable, stricter, the safe time between failures of quality and standard is long, Plug Action is frequently and not fragile, installation and maintenance are more flexible, can fundamentally stop the common power socket because of loose contact, the little frequent outage that causes of load, burn, potential safety hazard such as fire.
Power supply backplane is fixed in the level power supply stuck-module.
A kind of method to RACK system concentration supply power of the present invention has the following advantages:
1, N+1 Redundancy Design: a level power supply adopts the N+1 Redundancy Design, has not only effectively reduced the power supply cost.And can under the situation that any 1 power module lost efficacy, still guarantee RACK system operate as normal;
2, level power supply design has the functional circuit of hot swap, and hot plug is supported in the power module design, can not have the instrument dismounting, and the personnel of maintaining easily change the trouble power module, and after the trouble power module was changed, power module can return to normal condition again;
3, fault can detect and handle design certainly: when power module breaks down in the power subsystem, the trouble power module can be isolated, send warning information to Monitor And Control Subsystem; Overvoltage, overcurrent, temperature exceeding standard etc. occur when unusual, the functional circuit in the power subsystem takes to increase heat-sinking capability or action such as outage automatically automatically, avoids the harmful effect to power supply and whole RACK system;
4, node short-circuit protection function: the fault in case certain server node is short-circuited, secondary power supply can disconnect immediately and stop to the power supply of this server node, thereby avoid the whole RACK system generation loss of power accident;
5, the use of rack supply socket: can fundamentally stop the common power socket because of loose contact, the little frequent outage that causes of load, burn, potential safety hazard such as fire;
6, power supply module and computing node all adopt the connected mode of golden finger to be connected one by power supply backplane, have greatly improved the reliability of electric power system, realize no cable connection, maintain easily;
7, reasonable in design, easy to use, thereby, have good value for applications.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Accompanying drawing 1 is a kind of structural representation block diagram of the method to RACK system concentration supply power.
Embodiment
Explain below with reference to Figure of description and specific embodiment a kind of method to RACK system concentration supply power of the present invention being done.
Embodiment:
A kind of method to RACK system concentration supply power of the present invention adopts N+1 power module parallel redundancy supply power mode to produce+the 12V bus of power by the intermediate power supplies backboard, comes to power to server node in the RACK system; Adopt the power supply of two level power supplies, one level power supply adopts multi-power module parallel operation mode, be N+1 power module parallel redundancy supply power mode, realize of the conversion of 220V AC power, output in the RACK system on each server node by the 12V DC power supply to the 12V DC power supply; The DC-DC secondary power supply that each server node plate carries is changed the 12V power supply, provide the required 12V of each server node, 5V, 3.3V, 5VSB ,-clock signal of 12V voltage and PS-ON and PowerGood switching on and shutting down; Power supply module and server node all adopt the connected mode of golden finger to be connected one by power supply backplane.
The N+1 power module parallel redundancy supply power mode of one level power supply is by the power module of in-parallel operation, and distributed power source is provided; All power module parallel runnings, the load that equalization of incidence is current, the power module array is put a power power-supply module than rated capacity polygamy, when a power module breaks down, the trouble power module is disconnected from load, other power module will be supported all loads immediately, make it be the power supply of RACK system uninterruptedly; One level power supply power module is powered to each server node of RACK system by power supply backplane; The design of one level power supply power module has the functional circuit of fault detect, location, isolation, warning, hot swap, and also designing in the level power supply power module has overvoltage, overcurrent, the too high safety protective circuit of temperature.
One level power supply adopts 1 group of 3+1 power module parallel redundancy supply power mode, the rated output power of each power module configuration 5000W, total maximum rated power 15000W.
Secondary power supply is provided with and prevents the node power-off protecting circuit to what each server node in the RACK system provided short-circuit protection function; The fault in case certain server node is short-circuited, secondary power supply can disconnect immediately and stop to this server node power supply; Secondary power supply adopts the hot plug design.
Before entering the RACK system, three-phase 380V power supply adopts the rack supply socket to convert single-phase 220V power supply to, and single-phase 220V power supply is the intrasystem power module power supply of RACK.
Power supply backplane is fixed in the level power supply stuck-module.
Except that the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims (6)

1. method to RACK system concentration supply power is characterized in that adopting N+1 power module parallel redundancy supply power mode to produce+the 12V bus of powering by the intermediate power supplies backboard, comes to server node power supply in the RACK system; Adopt the power supply of two level power supplies, one level power supply adopts multi-power module parallel operation mode, be N+1 power module parallel redundancy supply power mode, realize of the conversion of 220V AC power, output in the RACK system on each server node by the 12V DC power supply to the 12V DC power supply; The DC-DC secondary power supply that each server node plate carries is changed the 12V power supply, provide the required 12V of each server node, 5V, 3.3V, 5VSB ,-clock signal of 12V voltage and PS-ON and PowerGood switching on and shutting down; Power supply module and server node all adopt the connected mode of golden finger to be connected one by power supply backplane.
2. a kind of method to RACK system concentration supply power according to claim 1 is characterized in that the N+1 power module parallel redundancy supply power mode of a level power supply, is by the power module of in-parallel operation, and distributed power source is provided; All power module parallel runnings, the load that equalization of incidence is current, the power module array is put a power power-supply module than rated capacity polygamy, when a power module breaks down, the trouble power module is disconnected from load, other power module will be supported all loads immediately, make it be the power supply of RACK system uninterruptedly; One level power supply power module is powered to each server node of RACK system by power supply backplane; The design of one level power supply power module has the functional circuit of fault detect, location, isolation, warning, hot swap, supports hot plug, and also designing in the level power supply power module has overvoltage, overcurrent, the too high safety protective circuit of temperature.
3. a kind of method according to claim 2 to RACK system concentration supply power, it is characterized in that a level power supply adopts 1 group of 3+1 power module parallel redundancy supply power mode, the rated output power of each power module configuration 5000W, total maximum rated power 15000W.
4. a kind of method to RACK system concentration supply power according to claim 1 is characterized in that secondary power supply is provided with to prevent the node power-off protecting circuit to what each server node in the RACK system provided short-circuit protection function; The fault in case certain server node is short-circuited, secondary power supply can disconnect immediately and stop to this server node power supply; Secondary power supply adopts the hot plug design.
5. a kind of method according to claim 1 to RACK system concentration supply power, before it is characterized in that entering the RACK system, three-phase 380V power supply adopts the rack supply socket to convert single-phase 220V power supply to, and single-phase 220V power supply is the intrasystem power module power supply of RACK.
6. a kind of method to RACK system concentration supply power according to claim 1 is characterized in that power supply backplane is fixed in the level power supply stuck-module.
CN201010243387A 2010-08-03 2010-08-03 Method for carrying out centralized power supply on RACK system Active CN101917053B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010243387A CN101917053B (en) 2010-08-03 2010-08-03 Method for carrying out centralized power supply on RACK system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010243387A CN101917053B (en) 2010-08-03 2010-08-03 Method for carrying out centralized power supply on RACK system

Publications (2)

Publication Number Publication Date
CN101917053A true CN101917053A (en) 2010-12-15
CN101917053B CN101917053B (en) 2012-10-24

Family

ID=43324479

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201010243387A Active CN101917053B (en) 2010-08-03 2010-08-03 Method for carrying out centralized power supply on RACK system

Country Status (1)

Country Link
CN (1) CN101917053B (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102609069A (en) * 2012-03-27 2012-07-25 中国人民解放军国防科学技术大学 Power supply method for super computer
CN102662453A (en) * 2012-03-27 2012-09-12 中国人民解放军国防科学技术大学 Power supply system of high-performance computer
CN102809989A (en) * 2011-06-02 2012-12-05 鸿富锦精密工业(深圳)有限公司 Cabinet-type server system
CN102904417A (en) * 2011-12-24 2013-01-30 许继集团有限公司 Adaptive modulation method for submodule capacitor voltage of modular multi-level commutation device
CN103034312A (en) * 2011-10-10 2013-04-10 鸿富锦精密工业(深圳)有限公司 Processor power supply system
CN103176577A (en) * 2011-12-20 2013-06-26 深圳市腾讯计算机系统有限公司 Power supply system for device
CN103324264A (en) * 2012-03-22 2013-09-25 鸿富锦精密工业(深圳)有限公司 Power supply device of cabinet
CN103391012A (en) * 2012-05-10 2013-11-13 北京百度网讯科技有限公司 Machine cabinet power supply system
CN103441469A (en) * 2013-08-23 2013-12-11 浪潮电子信息产业股份有限公司 Method for restraining surge currents by utilization of recoverable OCP
CN103729271A (en) * 2012-10-11 2014-04-16 北京百度网讯科技有限公司 Method and system for testing stability of entire equipment cabinet and testing servers
CN105356431A (en) * 2015-12-04 2016-02-24 浪潮电子信息产业股份有限公司 Device for preventing secondary power supply board part becomes invalid and leads to complete machine cabinet to fall electric
CN102809989B (en) * 2011-06-02 2016-11-30 重庆金宏机械工具厂(普通合伙) Cabinet-type server system
CN106168845A (en) * 2016-08-19 2016-11-30 浪潮(北京)电子信息产业有限公司 A kind of N+M redundancy scheme server power system
CN106205745A (en) * 2016-07-27 2016-12-07 中国科学院等离子体物理研究所 A kind of fusion power supply topologies of concentration supply power
CN106249838A (en) * 2016-08-11 2016-12-21 华为技术有限公司 Method, backboard and the server powered for server
CN106249839A (en) * 2016-08-19 2016-12-21 浪潮(北京)电子信息产业有限公司 A kind of N+N redundancy scheme server power system
CN106774766A (en) * 2016-12-16 2017-05-31 广东威创视讯科技股份有限公司 The construction for electricity system of desktop processor
CN104460930B (en) * 2014-12-31 2017-06-13 广东威创视讯科技股份有限公司 ATX reference power supplies realize device
CN106877275A (en) * 2017-03-23 2017-06-20 郑州云海信息技术有限公司 Plate part failure power-down protection apparatus and guard method in a kind of node
CN106877280A (en) * 2017-03-23 2017-06-20 郑州云海信息技术有限公司 A kind of Power conversion board part failure power-down protection apparatus and guard method
CN109324678A (en) * 2018-09-21 2019-02-12 郑州云海信息技术有限公司 A kind of the node method of supplying power to and device of multi node server
CN111739669A (en) * 2020-07-24 2020-10-02 中国核动力研究设计院 Redundant excitation structure, system and method suitable for rod position detector of nuclear power station
CN111984102A (en) * 2019-05-21 2020-11-24 北京比特大陆科技有限公司 Power supply system
CN114243639A (en) * 2021-12-10 2022-03-25 中国电子科技集团公司第二十九研究所 Method and system for realizing over-temperature automatic protection by separating main power supply from auxiliary power supply
EP4369586A1 (en) * 2022-11-14 2024-05-15 Delta Electronics Inc. Power supply unit and dc conversion module

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104506342A (en) 2014-11-26 2015-04-08 英业达科技有限公司 Rack-mounted server system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08214546A (en) * 1994-12-06 1996-08-20 Hitachi Ltd Dc power source and dc power supply system
CN101465743A (en) * 2009-01-08 2009-06-24 浪潮电子信息产业股份有限公司 Two stage electric power system of blade server
US20090167089A1 (en) * 2007-12-28 2009-07-02 International Business Machines Corporation Apparatus, system, and method for a high efficiency redundant power system
CN201290019Y (en) * 2008-09-28 2009-08-12 韦永奎 Postpositive back-up power system
CN101615813A (en) * 2009-07-20 2009-12-30 浪潮电子信息产业股份有限公司 A kind of plate level power supply redundancy backup method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08214546A (en) * 1994-12-06 1996-08-20 Hitachi Ltd Dc power source and dc power supply system
US20090167089A1 (en) * 2007-12-28 2009-07-02 International Business Machines Corporation Apparatus, system, and method for a high efficiency redundant power system
CN201290019Y (en) * 2008-09-28 2009-08-12 韦永奎 Postpositive back-up power system
CN101465743A (en) * 2009-01-08 2009-06-24 浪潮电子信息产业股份有限公司 Two stage electric power system of blade server
CN101615813A (en) * 2009-07-20 2009-12-30 浪潮电子信息产业股份有限公司 A kind of plate level power supply redundancy backup method

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102809989B (en) * 2011-06-02 2016-11-30 重庆金宏机械工具厂(普通合伙) Cabinet-type server system
CN102809989A (en) * 2011-06-02 2012-12-05 鸿富锦精密工业(深圳)有限公司 Cabinet-type server system
CN103034312A (en) * 2011-10-10 2013-04-10 鸿富锦精密工业(深圳)有限公司 Processor power supply system
CN103176577A (en) * 2011-12-20 2013-06-26 深圳市腾讯计算机系统有限公司 Power supply system for device
CN102904417A (en) * 2011-12-24 2013-01-30 许继集团有限公司 Adaptive modulation method for submodule capacitor voltage of modular multi-level commutation device
CN103324264A (en) * 2012-03-22 2013-09-25 鸿富锦精密工业(深圳)有限公司 Power supply device of cabinet
CN102662453B (en) * 2012-03-27 2014-07-23 中国人民解放军国防科学技术大学 Power supply system of high-performance computer
CN102662453A (en) * 2012-03-27 2012-09-12 中国人民解放军国防科学技术大学 Power supply system of high-performance computer
CN102609069A (en) * 2012-03-27 2012-07-25 中国人民解放军国防科学技术大学 Power supply method for super computer
CN103391012B (en) * 2012-05-10 2016-12-14 北京百度网讯科技有限公司 Rack electric power system
CN103391012A (en) * 2012-05-10 2013-11-13 北京百度网讯科技有限公司 Machine cabinet power supply system
CN103729271A (en) * 2012-10-11 2014-04-16 北京百度网讯科技有限公司 Method and system for testing stability of entire equipment cabinet and testing servers
CN103441469A (en) * 2013-08-23 2013-12-11 浪潮电子信息产业股份有限公司 Method for restraining surge currents by utilization of recoverable OCP
CN104460930B (en) * 2014-12-31 2017-06-13 广东威创视讯科技股份有限公司 ATX reference power supplies realize device
CN105356431A (en) * 2015-12-04 2016-02-24 浪潮电子信息产业股份有限公司 Device for preventing secondary power supply board part becomes invalid and leads to complete machine cabinet to fall electric
CN106205745A (en) * 2016-07-27 2016-12-07 中国科学院等离子体物理研究所 A kind of fusion power supply topologies of concentration supply power
CN106249838B (en) * 2016-08-11 2019-10-25 华为技术有限公司 Method, backboard and server for server power supply
CN106249838A (en) * 2016-08-11 2016-12-21 华为技术有限公司 Method, backboard and the server powered for server
CN106249839A (en) * 2016-08-19 2016-12-21 浪潮(北京)电子信息产业有限公司 A kind of N+N redundancy scheme server power system
CN106168845A (en) * 2016-08-19 2016-11-30 浪潮(北京)电子信息产业有限公司 A kind of N+M redundancy scheme server power system
CN106774766A (en) * 2016-12-16 2017-05-31 广东威创视讯科技股份有限公司 The construction for electricity system of desktop processor
CN106877275A (en) * 2017-03-23 2017-06-20 郑州云海信息技术有限公司 Plate part failure power-down protection apparatus and guard method in a kind of node
CN106877280A (en) * 2017-03-23 2017-06-20 郑州云海信息技术有限公司 A kind of Power conversion board part failure power-down protection apparatus and guard method
CN109324678A (en) * 2018-09-21 2019-02-12 郑州云海信息技术有限公司 A kind of the node method of supplying power to and device of multi node server
CN111984102A (en) * 2019-05-21 2020-11-24 北京比特大陆科技有限公司 Power supply system
CN111739669A (en) * 2020-07-24 2020-10-02 中国核动力研究设计院 Redundant excitation structure, system and method suitable for rod position detector of nuclear power station
CN111739669B (en) * 2020-07-24 2022-02-01 中国核动力研究设计院 Redundant excitation structure, system and method suitable for rod position detector of nuclear power station
CN114243639A (en) * 2021-12-10 2022-03-25 中国电子科技集团公司第二十九研究所 Method and system for realizing over-temperature automatic protection by separating main power supply from auxiliary power supply
EP4369586A1 (en) * 2022-11-14 2024-05-15 Delta Electronics Inc. Power supply unit and dc conversion module

Also Published As

Publication number Publication date
CN101917053B (en) 2012-10-24

Similar Documents

Publication Publication Date Title
CN101917053B (en) Method for carrying out centralized power supply on RACK system
CN102035247B (en) Method for designing power supply of centralized RACK system
US8638008B2 (en) 380 volt direct current power distribution system for information and communication technology systems and facilities
JP5695646B2 (en) Direct connection of backup power supply to motherboard in server system
CN207098747U (en) It is a kind of can online insertion and removal Modularized UPS power supply system
WO2011081850A1 (en) Data center using fuel cells in place of diesel generators for backup power
CN105656051A (en) Transient-energy dissipation device
CN103715757A (en) Back-up type redundant low-voltage power distribution system used for nuclear power station
CN115940387A (en) Power supply system of server and data center
CN107134933A (en) A kind of power-supply device exported with multiple voltage grade
CN201674275U (en) Double-power-source automatic switching loop
CN203707869U (en) Reserve-type redundancy low-voltage distribution system for nuclear power station
CN110601168A (en) High-power high-reliability high-voltage direct-current power supply system
CN102629777A (en) Standby power system of DC power source
CN202444325U (en) Intelligent integrated power supply monitoring system
CN209913570U (en) Power supply loop for flame detection device
CN201557212U (en) Network optical-fiber access cabinet
CN103972925B (en) The grid-connected proterctive equipment of distributed photovoltaic
Cisco Cisco ICS 7750 Power and Cooling Information
CN207021906U (en) A kind of power-supply device with the output of multiple voltage grade
Xiaofei et al. How to ensure the modular UPS with high reliability
CN202797954U (en) Power management unit (PMU) with lightning protection function
CN218958615U (en) Power distribution cabinet
CN202663197U (en) Intelligent integrated power supply monitoring system
CN206249235U (en) A kind of supply unit with redundant battery

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant