JP2013105874A - Power distribution structure for electrical equipment storage rack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power distribution structure for an electrical equipment storage rack for dissolving that an influence of an electric abnormality and short-circuit has on the other distribution system to minimize an electric trouble even when the electric abnormality and short-circuit are generated at a part of a power distribution system.SOLUTION: A power distribution structure supplies a plurality of power sources with different voltages to a rack body 3 which stores electric equipment 2. The power distribution structure is made into independent structure by being divided by power cables 20, 21 with different voltage; a plurality of main distribution outlets 22; sub-distribution outlets 23; a plurality of high-voltage power supply systems 24; and a plurality of low-voltage power supply systems 25, etc. Furthermore, the high-voltage power supply systems 24 are constituted by electrically connecting a plurality of high-voltage outlet bars 45. The respective low-voltage power supply systems 25 are constituted of low-voltage outlet bars 55. The main distribution outlets 22 and the sub-distribution outlets 23 are integrally arranged on an attachment wall 15 on the top surface of the rack body 3 at a state that they are exposed to the outer surface the rack body 3.

Description

  The present invention relates to a power distribution structure provided in an electrical equipment storage rack such as a server rack. The power distribution structure is composed of power distribution devices such as distribution outlets and outlet bars.

  This type of power distribution structure can be found, for example, in US Pat. In this case, a vertically long wiring duct is arranged inside a rack for storing electrical equipment, and a large number of power outlets are arranged in a straight line in a vertically long window opened in a part of the wiring duct. Each device can be connected to a power source by connecting the power plug of the electrical device stored in the rack to a power outlet.

  In the power distribution structure of the present invention, an outlet bar is arranged inside the server rack, and the power plug of each server accommodated in the rack is connected to the outlet bar. This type of outlet bar is disclosed in Patent Document 2, for example. It is known. There, a large number of outlets are arranged in a straight line along the longitudinal direction of the rectangular bar-shaped outlet bar body. One end of the outlet bar body is provided with a terminal block for connecting an electric wire led out from each outlet. The outlet bar is attached to the rack frame for storing electrical equipment.

  Patent Document 3 discloses a distribution board unit for a rack that houses electrical devices such as servers and routers. The distribution board unit is configured such that a breaker and a plurality of outlets are disposed inside a U-shaped casing, and an opening surface of the casing is covered with a panel supported so as to be able to swing open and close. The distribution board unit is attached to the rack mount angle.

JP 2008-300744 A (paragraph number 0012, FIGS. 1 and 2) JP 2004-296223 A (paragraph number 0009, FIG. 1) Japanese Patent Laying-Open No. 2003-070110 (paragraph number 0010, FIG. 4)

  According to the power distribution structure of Patent Documents 1 to 3, an outlet bar corresponding to the number of servers accommodated in a server rack is attached to the rack frame to distribute power to individual servers. However, the number of servers per server rack tends to increase, and the number of outlet bars used per server rack is increasing accordingly. All outlet bars are placed in a convenient space. It has become difficult. In particular, when a half server is accommodated in a server rack, the number of outlets required is twice as large as when a full server is accommodated, and the problem is how to arrange the outlet bars. In addition to the power cable, the server rack must be wired with a communication cable. Furthermore, in recent years, a 200V power source is being frequently used as a server power source in order to increase energy efficiency and save power. It is necessary to prepare a power source. Therefore, it is necessary to secure a space for placing a 200V outlet bar, a 100V outlet bar, and a communication cable in the rack.

  As the number of servers accommodated in the server rack increases, electrical abnormalities and short circuits in the power distribution structure become a problem. For example, if an electrical failure or short circuit occurs on the outlet bar located near the power source, or if the power plug ignites due to tracking, etc., the outlet bar connected to the outlet bar that caused the problem There is a risk that many servers may go down at once. In order to solve such electrical troubles, it is preferable to branch the power supply system as much as possible to make it independent. However, this makes the power distribution structure complicated and makes it more difficult to secure the arrangement space. In addition, when the server is attached to and detached from the rack body for maintenance, the power distribution structure may be an obstacle, and extra maintenance work may be required.

An object of the present invention is to provide an electrical device capable of minimizing electrical trouble by eliminating the influence of other electrical distribution systems, even when an electrical abnormality or short circuit occurs in a part of the electrical distribution system. An object is to provide a power distribution structure for a storage rack.
An object of the present invention is to be able to arrange power distribution devices such as distribution outlets and outlet bars without difficulty even when supplying a plurality of power supplies having different voltages to the server rack, and to reduce the maintenance work. An object of the present invention is to provide a power distribution structure for an electrical equipment storage rack that is excellent in usability.

  The power distribution structure for an electrical equipment storage rack according to the present invention supplies a plurality of power supplies having different voltages to a rack body 3 that houses a group of electrical equipment 2. The power distribution structure includes a high-voltage power cable 20 and a low-voltage power cable 21, a plurality of high-voltage power supply main distribution outlets 22, at least one low-voltage power supply sub-distribution outlet 23, and the inside of the rack body 3. A plurality of high voltage power supply systems 24 and a plurality of low voltage power supply systems 25 are included. The main distribution outlet 22 and the sub-distribution outlet 23 include box-shaped casings 26 and 36 and a plurality of branch outlets 27 and 37 assembled to the casings 26 and 36, respectively. Each high-voltage power supply system 24 is configured by electrically connecting a plurality of high-voltage outlet bars 45. Each low voltage power supply system 25 is constituted by a low voltage outlet bar 55. The main distribution outlet 22 and the power cable 20, and the sub distribution outlet 23 and the power cable 21 are connected via a primary main power cord 28 and a primary sub power cord 38 branched from the power cables 20 and 21. The main distribution outlet 22 and the high-voltage outlet bar 45, and the sub-distribution outlet 23 and the low-voltage outlet bar 55 include a plurality of secondary main power cords 46 and a plurality of secondary sub power cords 56 connected to the branch outlets 27 and 37. Connect through. The main distribution outlet 22 and the sub-distribution outlet 23 are arranged in a concentrated manner on a mounting wall 15 erected on the upper surface of the rack body 3 and are exposed toward an open space outside the rack body 3.

  A detachable connector plug 31 and a connector socket 32 are provided in the middle of the primary main power cord 28. The connected connector plug 31 and connector socket 32 are placed on the cord support shelf 16 projecting above the mounting wall 15, and fixed to the cord support shelf 16 with a fixture 33. The branch outlets 27 and 37 in a state where the casings 26 and 36 are mounted on the mounting wall 15 are exposed to the connection wall surfaces 26 a and 36 a of the casings 26 and 36 parallel to the mounting wall 15.

  Each high-voltage power supply system 24 provided inside the rack body 3 is configured by electrically connecting a plurality of high-voltage outlet bars 45. Each high-pressure outlet bar 45 is fixed in a column shape along the rack frame 4 facing the doorway 5 of the rack body 3. Each high-voltage outlet bar 45 is fixed to the rack frame 4 in a state where the socket 45 a of each high-voltage outlet bar 45 faces the entrance / exit 5 of the rack body 3.

  The electrical equipment is composed of a group of servers 2 arranged in a multistage manner on the rack frame 4. A duct structure is provided on the upper surface of the rack body 3 to feed and guide the exhaust after heat exchange in the server 2 to the ceiling space 8. The duct structure is arranged in a rectangular cylindrical duct base 11 fixed to the upper wall of the rack body 3, a duct portion 12 fixed to the upper surface of the duct base 11, and the duct base 11, and the exhaust is ducted. A fan unit 13 for feeding to the side of the section 12 is provided. A main distribution outlet 22 and a sub distribution outlet 23 are centrally arranged on the peripheral wall of the duct base 11 that also serves as the mounting wall 15.

  In the present invention, the power cables 20, 21, a plurality of main distribution outlets 22, a sub distribution outlet 23, a plurality of high voltage power supply systems 24 branched at the main distribution outlet 22, and a branch at the sub distribution outlet 23. The low-voltage power supply system 25 and the like constitute a power distribution structure. Further, each high-voltage power supply system 24 is configured by electrically connecting a plurality of high-voltage outlet bars 45. As described above, when the power distribution structure for the electric device 2 is branched and made independent, even when an electrical abnormality or a short circuit occurs in a part of the high-voltage power supply system 24, for example, the influence is influenced by the other high-voltage power supply system 24. Can be eliminated. Further, even when one branched power supply system ignites, it is possible to prevent the other branched power supply system from spreading. Accordingly, it is possible to eliminate electrical troubles by eliminating the operation or malfunction of a large number of electrical devices 2 at one time.

  In addition, when an electrical abnormality or short circuit occurs in a part of the high voltage power supply system 24, the power distribution function can be restored simply by replacing the high voltage outlet bar 45 whose function has been impaired. It can be done quickly with little effort and time. Further, since the main distribution outlet 22 and the sub distribution outlet 23 are centrally arranged on the mounting wall 15 and exposed toward the open space on the outer surface of the rack body 3, the inspection of both outlets 22 and 23, or the secondary main power cord The connection or separation of the 46 and the secondary sub power cord 56 can be easily performed in the open space outside the rack body 3. In addition, among the members constituting the power distribution structure, only a plurality of high-voltage outlet bars 45 and low-voltage outlet bars 55 are arranged inside the rack body 3, so that the space occupied by the power distribution structure in the rack can be reduced. It is possible to rationally arrange the power distribution structure as much as possible to improve usability.

  When a detachable connector plug 31 and a connector socket 32 are provided in the middle of the primary main power cord 28, the electrical connection between the power cable 20 and the power distribution structure can be achieved by separating or connecting the both 31 and 32. Can be switched quickly. Therefore, when performing work such as inspection or replacement of a group of electrical devices 2 housed in the rack body 3, only the power source of the rack body 3 that is the work target or the power supply system of the work target is required as necessary. Can be blocked. Further, since it is not necessary to stop the operation of the electric device 2 in the other rack main body 3 in operation, the inspection, replacement work, etc. of the electric device 2 can be performed while the service is being provided.

  In addition, since the connector plug 31 and the connector socket 32 placed on the cord support shelf 16 are fixed to the cord support shelf 16 by the fixing tool 33, the primary main power cord 28 is jumped off in the event of a disaster such as an earthquake. It is possible to prevent the plug 31 from being separated. Further, since the branch outlets 27 and 37 provided in the casings 26 and 36 are exposed to the connection wall surfaces 26a and 36a of the casings 26 and 36 parallel to the mounting wall 15, the power plug 47 of the secondary main power cord 46 It can be accurately attached and detached with the main distribution outlet 22 facing directly. Similarly, the power plug 57 of the secondary sub power cord 56 can be attached and detached accurately with the sub distribution outlet 23 facing.

  If the high-voltage power supply system 24 is configured by electrically connecting a plurality of high-voltage outlet bars 45, the power distribution function can be restored simply by replacing the high-voltage outlet bar 45 in which an electrical abnormality or short circuit has occurred. The power distribution function can be restored quickly and with less effort and time. Further, when each high-voltage outlet bar 45 is fixed to the rack frame 4 in a state where the socket 45a is directed to the entrance / exit 5 of the rack body 3, the socket 45a to be connected to or disconnected from the high-voltage outlet bar 45 of each electrical device 2 is connected. It can be done easily and accurately while visually observing.

  In the server rack 1 in which the duct structure is provided on the upper part of the rack body 3, when the main distribution outlet 22 and the sub distribution outlet 23 are arranged in a centralized manner on the peripheral wall of the duct base 11 that also serves as the mounting wall 15, the previous peripheral wall is used. Therefore, the power distribution structure can be simplified. Further, since the surrounding wall of the duct base 11 fixed to the rack body 3 is used as the mounting wall 15, the cost for constructing the server system can be reduced compared to the case where the mounting wall 15 is provided separately.

It is a rear view which shows the principal part of the power distribution structure which concerns on this invention. It is a rear view of a server system provided with a power distribution structure according to the present invention. It is a vertical side view of the server rack according to the present invention. It is wiring explanatory drawing which shows the outline of the power distribution structure which concerns on this invention. It is a rear view which shows the main distribution outlet based on this invention. It is a cross-sectional top view which shows the attachment structure of the high voltage | pressure outlet bar based on this invention.

(Embodiment) FIGS. 1 to 6 show an embodiment in which the present invention is applied to a server system. In the present invention, “front / rear”, “left / right”, and “up / down” follow the cross arrows shown in FIG. 2 and FIG.

  In FIG. 2, reference numeral 1 denotes a server rack (electric equipment storage rack) installed on the floor, and servers (electric equipment) 2 are accommodated in a multistage manner inside. The server rack 1 includes a rack body 3, a rack frame 4 provided inside the rack body 3, and a swingable door 6 that opens and closes the front and rear entrances 5 of the rack body 3. The server 2 is a half server that is smaller in front and rear dimensions than the full server, and is mounted on the rack frame 4 from the front and rear entrances 5 of the rack body 3 as shown in FIG. 3, and the exhaust surfaces are spaced apart from each other. It is attached in the opposite state.

  An exhaust passage 7 is provided between the front and rear exhaust surfaces of the servers 2 to guide the hot air discharged from each server 2 toward the ceiling. Although not shown in the figure, a blower fan is provided inside each server 2, and by driving the blower fan, cool air in the server room can be sucked through the door panel 6a of the door 6 and the internal heat generating components can be cooled. The exhaust gas after heat exchange can be discharged from the exhaust surface to the exhaust passage 7. The left and right side surfaces of the exhaust passage 7 are closed by partition walls, so that hot air discharged from the server 2 to the exhaust passage 7 does not leak outside and fill the server rack 1. In order to efficiently supply cold air to each server 2, the door panel 6a is formed of a honeycomb mesh.

  The exhaust discharged into the exhaust passage 7 inside the rack body 3 is forcibly fed to the ceiling space 8 through a duct structure provided in the upper part of the rack body 3. As shown in FIG. 3, the duct structure is arranged in a rectangular cylindrical duct base 11 fixed to the upper wall of the rack body 3, a duct portion 12 fixed to the upper surface of the duct base 11, and the duct base 11. The fan unit 13 that feeds the exhaust gas in the exhaust passage 7 to the ceiling space 8 through the duct portion 12, the air guide duct 14, and the like. A peripheral wall on the rear side of the duct base 11 also serves as a mounting wall 15, and a main distribution outlet 22 and a sub distribution outlet 23 described later are collectively arranged on the mounting wall 15, so that an open space outside the rack body 3 is provided. Exposed. This is for facilitating inspection work of the outlets 22 and 23 or cords. A cord support shelf 16 is supported by a bracket 19 on the upper portion of the mounting wall 15 and extends backward (see FIG. 1). The cord support shelf 16 is made of punching metal or expanded metal.

  The duct portion 12 includes a fixed duct 12a fixed to the duct base 11 and a movable duct 12b that slides up and down with respect to the fixed duct 12a, both of which are made of non-combustible cardboard. The fan unit 13 is composed of a plurality of fans. Inside the air guide duct 14 is disposed a shutter 17 that switches the exhaust suction direction back and forth. When the shutter 17 is rotated 90 degrees in the clockwise direction from the state shown in FIG. 3, the latter half of the air guide duct 14 is opened, and the inside of the exhaust passage 7 provided at the rear of the rack body 3 on which the full server is mounted. The exhaust can be sent to the ceiling space 8. In each figure, reference numeral 18 denotes a cableable rack that supports power cables 20, 21 and communication cables, which will be described later, along a rack row.

  Although not shown, the exhaust air that has reached the ceiling space 8 is supplied to an air conditioner provided in a separate room, cooled, returned through a cold air duct disposed in the ceiling, and opened to the ceiling. Is blown into the server room. The server 2 is kept at an appropriate temperature by the circulation of the cold air. The cold air outlets are opened at many places on the ceiling facing the passage between the rack rows of the server rack 1.

  The rack body 3 that accommodates a group of servers 2 is provided with a power distribution structure for connecting each server 2 to the power cable 20 and further connecting auxiliary equipment such as the fan unit 13 to the power cable 21.

  In FIG. 4, the power distribution structure includes three main distribution outlets 22 for high-voltage power supplies, sub-distribution outlets 23 for low-voltage power supplies, four high-voltage power supply systems 24 arranged inside the rack body 3, and two systems. The low-voltage power supply system 25 is provided. One of the three main distribution outlets 22 is a spare outlet provided in preparation for future server expansion. In this embodiment, as shown in FIG. As a result, two high-voltage power supply systems 24 can be added.

  In FIG. 5, a main distribution outlet 22 includes a press-molded rectangular box-shaped casing 26, two branch outlets 27 assembled to a connection wall surface 26a of the casing 26, and a primary main power source. A cable clamp 29 for connecting the cord 28 is provided. The main distribution outlet 22 is fixed to the vertical mounting wall 15 in a horizontally long posture with four screws, and the outlet port of the branch outlet 27 is attached in such a direction as to open on the connection wall surface 26 a parallel to the mounting wall 15. Two branch outlets 27 are connected in parallel to the primary main power cord 28. When the branch outlet 27 is exposed to the connection wall surface 26a of the casing 26 parallel to the mounting wall 15, the power plug 47 of the secondary main power cord 46 can be attached and detached accurately with each main distribution outlet 22 facing. .

  The primary main power cord 28 is branched from a power cable 20 that supplies power of 200 V, and a middle portion thereof is connected via a connector plug 31 and a connector socket 32 so as to be connectable or separable. The connected connector plug 31 and connector socket 32 are placed on the cord support shelf 16 at the top of the mounting wall 15 and fixed to the cord support shelf 16 in a non-separable manner by a binding band (fixing tool) 33 ( (See FIG. 1). The spare main distribution outlet 22 is also connected to the power cable 20 via the primary main power cord 28. As described above, when the connector plug 31 and the connector socket 32 are fixed to the cord support shelf 16 by the binding band (fixing tool) 33, the primary main power cord 28 is jumped off in the event of a disaster such as an earthquake, and the connector plug 31 Can be prevented from separating.

  The sub-distribution outlet 23 connects a press-molded rectangular box-shaped metal housing 36, two branch outlets 37 assembled to a connection wall surface 36 a of the housing 36, and a primary sub power cord 38. A socket 39 is provided. The sub-distribution outlet 23 is fixed to the vertical mounting wall 15 in a horizontally long posture with four screws, and the outlet port of the branch outlet 37 is attached in such a direction as to open on the connection wall surface 36 a parallel to the mounting wall 15. As a result, the sub-distribution outlet 23 and the main distribution outlet 22 are attached so that the outlets of the branch outlets 27 and 37 open toward the open space facing the passage on the rear side of the duct base 11. Two branch outlets 37 are connected in parallel to the primary sub power cord 38. The primary sub power cord 38 is branched from the power cable 21 for supplying 100V power, and a flanged plug 40 provided at the lead-out end is connected to the socket 39 of the sub distribution outlet 23.

  The high-voltage power supply system 24 is configured by connecting two high-voltage outlet bars 45 and 45 in series. The high-voltage outlet bar 45 is a commercially available product in which 20 sockets 45a are arranged on a rectangular bar-like main body that is long in the vertical direction. A secondary main power cord 46 is led out from the upper end of the main body, and a power plug 47 is provided at the leading end. A distribution outlet 48 for connecting another high-voltage outlet bar 45 is provided at the lower end of the main body. The length of the secondary main power cord 46 of the high voltage outlet bar 45 provided on the upper side is set to 2 m in order to connect to the main distribution outlet 22. On the other hand, the length of the secondary main power cord 46 of the high-voltage outlet bar 45 provided on the lower side is set to be as short as 0.5 m because it is only connected to the upper high-voltage outlet bar 45. By connecting the power plug 47 of the lower high voltage outlet bar 45 to the distribution outlet 48 of the upper high voltage outlet bar 45, a current of 200 V is supplied to each of the upper and lower high voltage outlet bars 45.

  As shown in FIG. 6, the high-voltage outlet bars 45 constituting the four high-voltage power supply systems 24 are fixed in a vertical row along the rack frame 4 so as to face the front and rear entrances 5, 5. Specifically, the mounting brackets 49 are fixed to the upper and lower four positions of the rack frame 4 with screws 50, and the upper and lower ends of the high voltage outlet bar 45 adjacent to the upper and lower sides are fixed to the pair of mounting brackets 49 with screws 51, respectively. The socket 45 a of the high-voltage outlet bar 45 fixed to the rack frame 4 is directed to the entrances 5 and 5 of the rack body 3. Therefore, the operation of connecting the power plug 52 of the cord derived from each server 2 to the high-voltage outlet bar 45 can be easily performed while visually observing the socket 45a to be connected. Further, when removing each server 2 from the rack frame 4, the cords and power plugs 52 derived from each server 2 do not obstruct access.

  The low-voltage power supply system 25 includes a low-voltage outlet bar 55 connected to each branch outlet 37 of the sub-distribution outlet 23. The low-pressure outlet bar 55 is a commercially available product in which four sockets 55a are arranged in a rectangular bar-like main body that is long on the left and right. A secondary sub power cord 56 is led out from one end of the main body, and a power plug 57 connected to the branch outlet 37 is provided at the leading end.

  The low-pressure outlet bar 55 is attached to a pair of front and rear angle-shaped steel members that connect the upper ends of the rack frame 4. For this purpose, magnets are embedded in two places on the left and right of the mounting surface of the main body, and the low-pressure outlet bar 55 is fixed to the previous steel material by the magnetic adsorption action of the magnets. The lengths of the secondary auxiliary power cords 56 of the two low-voltage outlet bars 55 are both set to 2 m, one of which is arranged on the front side of the rack frame 4 and the other is arranged on the rear side of the rack frame 4. It is. The low-pressure outlet bar 55 is used as a driving power source for the fan unit 13 that operates with a power supply of 100 V, a display device provided in the rack body 3, an electric tool such as an electric screwdriver, a work illumination lamp, or the like. Although not shown, the power plug of the fan unit 13 is connected to a low-voltage outlet bar 55 disposed on the front side of the rack frame 4. A communication cable for connecting each server 2 and the main computer is drawn into the rack body 3 using the spaces on the left and right sides between the rack body 3 and the rack frame 4 and connected to each server 2. It is.

  As described above, when the power distribution structure for the server 2 is branched and made independent, for example, even when an electrical abnormality or a short circuit occurs in a part of the high-voltage power supply system 24, the influence is affected by the other high-voltage power supply systems 24. Can be eliminated. Therefore, it is possible to minimize the electrical trouble by eliminating the operation or malfunction of a large number of servers 2 at a time. Even when one branched power feeding system ignites, it is possible to prevent the other branched power feeding system from spreading. In addition, when an electrical abnormality or short circuit occurs in a part of the high voltage power supply system 24, the power distribution function can be restored simply by replacing the high voltage outlet bar 45 whose function has been impaired. It can be done quickly with little effort and time.

  Among the members constituting the power distribution structure, only the high-voltage outlet bar 45 and the low-voltage outlet bar 55 are arranged inside the rack body 3, so that the space occupied by the power distribution structure in the rack can be reduced, and power is distributed accordingly. The structure can be rationally arranged to improve usability. By separating or connecting the connector plug 31 and the connector socket 32, the electrical connection state between the power cable 20 and the power distribution structure can be quickly switched. It is possible to perform work such as inspection or replacement of the server 2 by cutting off only the power supply of the power supply system to be worked as necessary.

  Since the main distribution outlet 22 and the sub-distribution outlet 23 are centrally arranged on the peripheral wall of the duct base 11 that also serves as the mounting wall 15, the power distribution structure can be simplified by using the previous peripheral wall. Further, since the peripheral wall of the duct base 11 fixed to the rack body 3 is used as the mounting wall 15, the server system can be constructed at a lower cost than when the mounting wall 15 is provided separately.

  In the server rack 1 that accommodates the full server 2 having a large longitudinal dimension, the hot air discharged from each server 2 is guided toward the ceiling space 8 between the rear wall of the full server 2 and the rear wall of the server rack 1. An exhaust passage 7 is provided. In that case, the exhaust in the exhaust passage 7 can be supplied to the ceiling space 8 by rotating the shutter 17 to connect the air guide duct 14 to the exhaust passage 7. In this case, since the rear entrance 5 is closed by the wall panel, the full server 2 is cooled by the cold air taken in from the front entrance 5.

  In the above embodiment, the mounting wall 15 is formed using the peripheral wall of the duct base 11, but this is not necessary. For example, in the case of a server rack that does not have a duct structure, the mounting wall 15 can be erected on the upper surface of the rack body 3, and the main distribution outlet 22 and the sub distribution outlet 23 can be collectively arranged there. In addition, the cord support shelf 16 can be supported using a pair of left and right support legs that support the mounting wall 15.

  The number of sockets 45a of the high-voltage outlet bar 45 and the number of sockets 55a of the low-voltage outlet bar 55 are not limited to the outlet bars 45 and 55 described in the embodiment. For example, each high-voltage power supply system 24 can be configured by electrically connecting three or more high-voltage outlet bars 45. A breaker may be added to each of the branch outlets 27 and 37 in the main distribution outlet 22 and the sub distribution outlet 23. The power distribution structure of the present invention can also be applied to a rack that accommodates routers or communication devices in addition to servers.

2 Electrical equipment (server)
3 Rack body 4 Rack frame 20 High voltage power cable 21 Low voltage power cable 22 Main distribution outlet 23 Sub distribution outlet 24 High voltage power supply system 25 Low voltage power supply system 26/36 Case 27/37 Branch outlet 28 Primary main power cord 31 Connector plug 32 Connector socket 38 Primary sub power cord 45 High voltage outlet bar 55 Low voltage outlet bar

Claims (4)

A power distribution structure is provided for supplying a plurality of power sources having different voltages to a rack body (3) that houses a group of electrical devices (2).
The power distribution structure includes a high voltage power cable (20) and a low voltage power cable (21), a plurality of main distribution outlets (22) for high voltage power supplies, and at least one sub distribution outlet (23 for low voltage power supplies). ), A plurality of high voltage power supply systems (24) disposed inside the rack body (3), and a plurality of low voltage power supply systems (25),
The main distribution outlet (22) and the sub distribution outlet (23) each include a box-shaped casing (26, 36) and a plurality of branch outlets (27, 37) assembled to the casing (26, 36). And
Each high-voltage power supply system (24) is configured by electrically connecting a plurality of high-voltage outlet bars (45), and each low-voltage power supply system (25) is configured by a low-voltage outlet bar (55).
The main distribution outlet (22) and the power cable (20), and the sub distribution outlet (23) and the power cable (21) are divided into primary main power cords (28) and 1 branched from the respective power cables (20, 21). It is connected via the secondary / sub power cord (38)
The main distribution outlet (22) and the high-voltage outlet bar (45), and the secondary distribution outlet (23) and the low-voltage outlet bar (55) are connected to each branch outlet (27, 37). 46), and a plurality of secondary sub power cords (56),
The main distribution outlet (22) and the sub-distribution outlet (23) are collectively arranged on the mounting wall (15) erected on the upper surface of the rack body (3), toward the open space outside the rack body (3). A power distribution structure for an electrical equipment storage rack which is exposed. A removable connector plug (31) and a connector socket (32) are provided in the middle of the primary main power cord (28).
The connected connector plug (31) and connector socket (32) are placed on the cord support shelf (16) protruding from the upper part of the mounting wall (15), and the cord support shelf (16 )
The branch outlets (27, 37) in a state where the housing (26, 36) is mounted on the mounting wall (15) are connected to the connecting wall surfaces (26a, 36a) of the housing (26, 36) parallel to the mounting wall (15). The power distribution structure for an electrical equipment storage rack according to claim 1, wherein the power distribution structure is exposed to the electrical equipment. Each high-voltage power supply system (24) provided inside the rack body (3) is configured by electrically connecting a plurality of high-voltage outlet bars (45),
Each high-pressure outlet bar (45) is fixed in a column along the rack frame (4) facing the entrance (5) of the rack body (3),
The high-voltage outlet bar (45) is fixed to the rack frame (4) in a state in which the socket (45a) of each high-voltage outlet bar (45) faces the doorway (5) of the rack body (3). Or a power distribution structure for the electrical equipment storage rack according to 2; The electrical equipment consists of a group of servers (2) arranged in multiple stages on the rack frame (4),
A duct structure is provided on the upper surface of the rack body (3) for guiding the exhaust after heat exchange in the server (2) to the ceiling space (8).
The duct structure includes a rectangular cylindrical duct base (11) fixed to the upper wall of the rack body (3), a duct portion (12) fixed to the upper surface of the duct base (11), and the duct base (11). And a fan unit (13) for supplying the exhaust to the duct portion (12) side,
The electric device according to any one of claims 1 to 3, wherein a main distribution outlet (22) and a sub distribution outlet (23) are collectively arranged on a peripheral wall of the duct base (11) which also serves as a mounting wall (15). Power distribution structure for storage racks.

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